Class: Google::Cloud::Monitoring::V3::AlertPolicy::Condition

Inherits:

Object

• Object
• Google::Cloud::Monitoring::V3::AlertPolicy::Condition

Extended by:

Protobuf::MessageExts::ClassMethods

Includes:

Protobuf::MessageExts

Defined in:

proto_docs/google/monitoring/v3/alert.rb

Overview

A condition is a true/false test that determines when an alerting policy should open an incident. If a condition evaluates to true, it signifies that something is wrong.

Defined Under Namespace

Modules: EvaluationMissingData Classes: LogMatch, MetricAbsence, MetricThreshold, MonitoringQueryLanguageCondition, PrometheusQueryLanguageCondition, Trigger

Instance Attribute Summary

• #condition_absent ⇒ ::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::MetricAbsence

  A condition that checks that a time series continues to receive new data points.

• #condition_matched_log ⇒ ::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::LogMatch

  A condition that checks for log messages matching given constraints.

• #condition_monitoring_query_language ⇒ ::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::MonitoringQueryLanguageCondition

  A condition that uses the Monitoring Query Language to define alerts.

• #condition_prometheus_query_language ⇒ ::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::PrometheusQueryLanguageCondition

  A condition that uses the Prometheus query language to define alerts.

• #condition_threshold ⇒ ::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::MetricThreshold

  A condition that compares a time series against a threshold.

• #display_name ⇒ ::String

  A short name or phrase used to identify the condition in dashboards, notifications, and incidents.

• #name ⇒ ::String

  Required if the condition exists.

Instance Attribute Details

#condition_absent ⇒ ::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::MetricAbsence

Returns A condition that checks that a time series continues to receive new data points.

Returns:

• (::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::MetricAbsence) —

  A condition that checks that a time series continues to receive new data points.

# File 'proto_docs/google/monitoring/v3/alert.rb', line 243

class Condition
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Specifies how many time series must fail a predicate to trigger a
  # condition. If not specified, then a `{count: 1}` trigger is used.
  # @!attribute [rw] count
  #   @return [::Integer]
  #     The absolute number of time series that must fail
  #     the predicate for the condition to be triggered.
  # @!attribute [rw] percent
  #   @return [::Float]
  #     The percentage of time series that must fail the
  #     predicate for the condition to be triggered.
  class Trigger
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that compares a collection of time series
  # against a threshold.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A
  #     [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies which time series should be compared with the threshold.
  #
  #     The filter is similar to the one that is specified in the
  #     [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list)
  #     (that call is useful to verify the time series that will be retrieved /
  #     processed). The filter must specify the metric type and the resource
  #     type. Optionally, it can specify resource labels and metric labels.
  #     This field must not exceed 2048 Unicode characters in length.
  # @!attribute [rw] aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources). Multiple aggregations
  #     are applied in the order specified.
  #
  #     This field is similar to the one in the [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list).
  #     It is advisable to use the `ListTimeSeries` method when debugging this
  #     field.
  # @!attribute [rw] denominator_filter
  #   @return [::String]
  #     A [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies a time series that should be used as the denominator of a
  #     ratio that will be compared with the threshold. If a
  #     `denominator_filter` is specified, the time series specified by the
  #     `filter` field will be used as the numerator.
  #
  #     The filter must specify the metric type and optionally may contain
  #     restrictions on resource type, resource labels, and metric labels.
  #     This field may not exceed 2048 Unicode characters in length.
  # @!attribute [rw] denominator_aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series
  #     selected by `denominatorFilter` as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources).
  #
  #     When computing ratios, the `aggregations` and
  #     `denominator_aggregations` fields must use the same alignment period
  #     and produce time series that have the same periodicity and labels.
  # @!attribute [rw] forecast_options
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::MetricThreshold::ForecastOptions]
  #     When this field is present, the `MetricThreshold` condition forecasts
  #     whether the time series is predicted to violate the threshold within
  #     the `forecast_horizon`. When this field is not set, the
  #     `MetricThreshold` tests the current value of the timeseries against the
  #     threshold.
  # @!attribute [rw] comparison
  #   @return [::Google::Cloud::Monitoring::V3::ComparisonType]
  #     The comparison to apply between the time series (indicated by `filter`
  #     and `aggregation`) and the threshold (indicated by `threshold_value`).
  #     The comparison is applied on each time series, with the time series
  #     on the left-hand side and the threshold on the right-hand side.
  #
  #     Only `COMPARISON_LT` and `COMPARISON_GT` are supported currently.
  # @!attribute [rw] threshold_value
  #   @return [::Float]
  #     A value against which to compare the time series.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must violate the
  #     threshold to be considered failing. Currently, only values
  #     that are a multiple of a minute--e.g., 0, 60, 120, or 300
  #     seconds--are supported. If an invalid value is given, an
  #     error will be returned. When choosing a duration, it is useful to
  #     keep in mind the frequency of the underlying time series data
  #     (which may also be affected by any alignments specified in the
  #     `aggregations` field); a good duration is long enough so that a single
  #     outlier does not generate spurious alerts, but short enough that
  #     unhealthy states are detected and alerted on quickly.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`,
  #     or by the ratio, if `denominator_filter` and `denominator_aggregations`
  #     are specified.
  # @!attribute [rw] evaluation_missing_data
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::EvaluationMissingData]
  #     A condition control that determines how metric-threshold conditions
  #     are evaluated when data stops arriving. To use this control, the value
  #     of the `duration` field must be greater than or equal to 60 seconds.
  class MetricThreshold
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Options used when forecasting the time series and testing
    # the predicted value against the threshold.
    # @!attribute [rw] forecast_horizon
    #   @return [::Google::Protobuf::Duration]
    #     Required. The length of time into the future to forecast whether a
    #     time series will violate the threshold. If the predicted value is
    #     found to violate the threshold, and the violation is observed in all
    #     forecasts made for the configured `duration`, then the time series is
    #     considered to be failing.
    #     The forecast horizon can range from 1 hour to 60 hours.
    class ForecastOptions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition type that checks that monitored resources
  # are reporting data. The configuration defines a metric and
  # a set of monitored resources. The predicate is considered in violation
  # when a time series for the specified metric of a monitored
  # resource does not include any data in the specified `duration`.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A
  #     [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies which time series should be compared with the threshold.
  #
  #     The filter is similar to the one that is specified in the
  #     [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list)
  #     (that call is useful to verify the time series that will be retrieved /
  #     processed). The filter must specify the metric type and the resource
  #     type. Optionally, it can specify resource labels and metric labels.
  #     This field must not exceed 2048 Unicode characters in length.
  # @!attribute [rw] aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources). Multiple aggregations
  #     are applied in the order specified.
  #
  #     This field is similar to the one in the [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list).
  #     It is advisable to use the `ListTimeSeries` method when debugging this
  #     field.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must fail to report new
  #     data to be considered failing. The minimum value of this field
  #     is 120 seconds. Larger values that are a multiple of a
  #     minute--for example, 240 or 300 seconds--are supported.
  #     If an invalid value is given, an
  #     error will be returned. The `Duration.nanos` field is
  #     ignored.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`.
  class MetricAbsence
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that checks whether a log message in the [scoping
  # project](https://cloud.google.com/monitoring/api/v3#project_name)
  # satisfies the given filter. Logs from other projects in the metrics
  # scope are not evaluated.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A logs-based filter. See [Advanced Logs
  #     Queries](https://cloud.google.com/logging/docs/view/advanced-queries)
  #     for how this filter should be constructed.
  # @!attribute [rw] label_extractors
  #   @return [::Google::Protobuf::Map{::String => ::String}]
  #     Optional. A map from a label key to an extractor expression, which is
  #     used to extract the value for this label key. Each entry in this map is
  #     a specification for how data should be extracted from log entries that
  #     match `filter`. Each combination of extracted values is treated as a
  #     separate rule for the purposes of triggering notifications. Label keys
  #     and corresponding values can be used in notifications generated by this
  #     condition.
  #
  #     Please see [the documentation on logs-based metric
  #     `valueExtractor`s](https://cloud.google.com/logging/docs/reference/v2/rest/v2/projects.metrics#LogMetric.FIELDS.value_extractor)
  #     for syntax and examples.
  class LogMatch
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # @!attribute [rw] key
    #   @return [::String]
    # @!attribute [rw] value
    #   @return [::String]
    class LabelExtractorsEntry
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition type that allows alert policies to be defined using
  # [Monitoring Query Language](https://cloud.google.com/monitoring/mql).
  # @!attribute [rw] query
  #   @return [::String]
  #     [Monitoring Query Language](https://cloud.google.com/monitoring/mql)
  #     query that outputs a boolean stream.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must violate the
  #     threshold to be considered failing. Currently, only values
  #     that are a multiple of a minute--e.g., 0, 60, 120, or 300
  #     seconds--are supported. If an invalid value is given, an
  #     error will be returned. When choosing a duration, it is useful to
  #     keep in mind the frequency of the underlying time series data
  #     (which may also be affected by any alignments specified in the
  #     `aggregations` field); a good duration is long enough so that a single
  #     outlier does not generate spurious alerts, but short enough that
  #     unhealthy states are detected and alerted on quickly.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`,
  #     or by the ratio, if `denominator_filter` and `denominator_aggregations`
  #     are specified.
  # @!attribute [rw] evaluation_missing_data
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::EvaluationMissingData]
  #     A condition control that determines how metric-threshold conditions
  #     are evaluated when data stops arriving.
  class MonitoringQueryLanguageCondition
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that allows alert policies to be defined using
  # [Prometheus Query Language
  # (PromQL)](https://prometheus.io/docs/prometheus/latest/querying/basics/).
  #
  # The PrometheusQueryLanguageCondition message contains information
  # from a Prometheus alerting rule and its associated rule group.
  #
  # A Prometheus alerting rule is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/alerting_rules/).
  # The semantics of a Prometheus alerting rule is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/#rule).
  #
  # A Prometheus rule group is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/).
  # The semantics of a Prometheus rule group is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/#rule_group).
  #
  # Because Cloud Alerting has no representation of a Prometheus rule
  # group resource, we must embed the information of the parent rule
  # group inside each of the conditions that refer to it. We must also
  # update the contents of all Prometheus alerts in case the information
  # of their rule group changes.
  #
  # The PrometheusQueryLanguageCondition protocol buffer combines the
  # information of the corresponding rule group and alerting rule.
  # The structure of the PrometheusQueryLanguageCondition protocol buffer
  # does NOT mimic the structure of the Prometheus rule group and alerting
  # rule YAML declarations. The PrometheusQueryLanguageCondition protocol
  # buffer may change in the future to support future rule group and/or
  # alerting rule features. There are no new such features at the present
  # time (2023-06-26).
  # @!attribute [rw] query
  #   @return [::String]
  #     Required. The PromQL expression to evaluate. Every evaluation cycle
  #     this expression is evaluated at the current time, and all resultant
  #     time series become pending/firing alerts. This field must not be empty.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     Optional. Alerts are considered firing once their PromQL expression was
  #     evaluated to be "true" for this long.
  #     Alerts whose PromQL expression was not evaluated to be "true" for
  #     long enough are considered pending.
  #     Must be a non-negative duration or missing.
  #     This field is optional. Its default value is zero.
  # @!attribute [rw] evaluation_interval
  #   @return [::Google::Protobuf::Duration]
  #     Optional. How often this rule should be evaluated.
  #     Must be a positive multiple of 30 seconds or missing.
  #     This field is optional. Its default value is 30 seconds.
  #     If this PrometheusQueryLanguageCondition was generated from a
  #     Prometheus alerting rule, then this value should be taken from the
  #     enclosing rule group.
  # @!attribute [rw] labels
  #   @return [::Google::Protobuf::Map{::String => ::String}]
  #     Optional. Labels to add to or overwrite in the PromQL query result.
  #     Label names [must be
  #     valid](https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels).
  #     Label values can be [templatized by using
  #     variables](https://cloud.google.com/monitoring/alerts/doc-variables).
  #     The only available variable names are the names of the labels in the
  #     PromQL result, including "__name__" and "value". "labels" may be empty.
  # @!attribute [rw] rule_group
  #   @return [::String]
  #     Optional. The rule group name of this alert in the corresponding
  #     Prometheus configuration file.
  #
  #     Some external tools may require this field to be populated correctly
  #     in order to refer to the original Prometheus configuration file.
  #     The rule group name and the alert name are necessary to update the
  #     relevant AlertPolicies in case the definition of the rule group changes
  #     in the future.
  #
  #     This field is optional. If this field is not empty, then it must
  #     contain a valid UTF-8 string.
  #     This field may not exceed 2048 Unicode characters in length.
  # @!attribute [rw] alert_rule
  #   @return [::String]
  #     Optional. The alerting rule name of this alert in the corresponding
  #     Prometheus configuration file.
  #
  #     Some external tools may require this field to be populated correctly
  #     in order to refer to the original Prometheus configuration file.
  #     The rule group name and the alert name are necessary to update the
  #     relevant AlertPolicies in case the definition of the rule group changes
  #     in the future.
  #
  #     This field is optional. If this field is not empty, then it must be a
  #     [valid Prometheus label
  #     name](https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels).
  #     This field may not exceed 2048 Unicode characters in length.
  class PrometheusQueryLanguageCondition
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # @!attribute [rw] key
    #   @return [::String]
    # @!attribute [rw] value
    #   @return [::String]
    class LabelsEntry
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition control that determines how metric-threshold conditions
  # are evaluated when data stops arriving.
  # This control doesn't affect metric-absence policies.
  module EvaluationMissingData
    # An unspecified evaluation missing data option.  Equivalent to
    # EVALUATION_MISSING_DATA_NO_OP.
    EVALUATION_MISSING_DATA_UNSPECIFIED = 0

    # If there is no data to evaluate the condition, then evaluate the
    # condition as false.
    EVALUATION_MISSING_DATA_INACTIVE = 1

    # If there is no data to evaluate the condition, then evaluate the
    # condition as true.
    EVALUATION_MISSING_DATA_ACTIVE = 2

    # Do not evaluate the condition to any value if there is no data.
    EVALUATION_MISSING_DATA_NO_OP = 3
  end
end

#condition_matched_log ⇒ ::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::LogMatch

Returns A condition that checks for log messages matching given constraints. If set, no other conditions can be present.

Returns:

• (::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::LogMatch) —

  A condition that checks for log messages matching given constraints. If set, no other conditions can be present.

# File 'proto_docs/google/monitoring/v3/alert.rb', line 243

class Condition
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Specifies how many time series must fail a predicate to trigger a
  # condition. If not specified, then a `{count: 1}` trigger is used.
  # @!attribute [rw] count
  #   @return [::Integer]
  #     The absolute number of time series that must fail
  #     the predicate for the condition to be triggered.
  # @!attribute [rw] percent
  #   @return [::Float]
  #     The percentage of time series that must fail the
  #     predicate for the condition to be triggered.
  class Trigger
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that compares a collection of time series
  # against a threshold.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A
  #     [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies which time series should be compared with the threshold.
  #
  #     The filter is similar to the one that is specified in the
  #     [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list)
  #     (that call is useful to verify the time series that will be retrieved /
  #     processed). The filter must specify the metric type and the resource
  #     type. Optionally, it can specify resource labels and metric labels.
  #     This field must not exceed 2048 Unicode characters in length.
  # @!attribute [rw] aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources). Multiple aggregations
  #     are applied in the order specified.
  #
  #     This field is similar to the one in the [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list).
  #     It is advisable to use the `ListTimeSeries` method when debugging this
  #     field.
  # @!attribute [rw] denominator_filter
  #   @return [::String]
  #     A [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies a time series that should be used as the denominator of a
  #     ratio that will be compared with the threshold. If a
  #     `denominator_filter` is specified, the time series specified by the
  #     `filter` field will be used as the numerator.
  #
  #     The filter must specify the metric type and optionally may contain
  #     restrictions on resource type, resource labels, and metric labels.
  #     This field may not exceed 2048 Unicode characters in length.
  # @!attribute [rw] denominator_aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series
  #     selected by `denominatorFilter` as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources).
  #
  #     When computing ratios, the `aggregations` and
  #     `denominator_aggregations` fields must use the same alignment period
  #     and produce time series that have the same periodicity and labels.
  # @!attribute [rw] forecast_options
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::MetricThreshold::ForecastOptions]
  #     When this field is present, the `MetricThreshold` condition forecasts
  #     whether the time series is predicted to violate the threshold within
  #     the `forecast_horizon`. When this field is not set, the
  #     `MetricThreshold` tests the current value of the timeseries against the
  #     threshold.
  # @!attribute [rw] comparison
  #   @return [::Google::Cloud::Monitoring::V3::ComparisonType]
  #     The comparison to apply between the time series (indicated by `filter`
  #     and `aggregation`) and the threshold (indicated by `threshold_value`).
  #     The comparison is applied on each time series, with the time series
  #     on the left-hand side and the threshold on the right-hand side.
  #
  #     Only `COMPARISON_LT` and `COMPARISON_GT` are supported currently.
  # @!attribute [rw] threshold_value
  #   @return [::Float]
  #     A value against which to compare the time series.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must violate the
  #     threshold to be considered failing. Currently, only values
  #     that are a multiple of a minute--e.g., 0, 60, 120, or 300
  #     seconds--are supported. If an invalid value is given, an
  #     error will be returned. When choosing a duration, it is useful to
  #     keep in mind the frequency of the underlying time series data
  #     (which may also be affected by any alignments specified in the
  #     `aggregations` field); a good duration is long enough so that a single
  #     outlier does not generate spurious alerts, but short enough that
  #     unhealthy states are detected and alerted on quickly.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`,
  #     or by the ratio, if `denominator_filter` and `denominator_aggregations`
  #     are specified.
  # @!attribute [rw] evaluation_missing_data
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::EvaluationMissingData]
  #     A condition control that determines how metric-threshold conditions
  #     are evaluated when data stops arriving. To use this control, the value
  #     of the `duration` field must be greater than or equal to 60 seconds.
  class MetricThreshold
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Options used when forecasting the time series and testing
    # the predicted value against the threshold.
    # @!attribute [rw] forecast_horizon
    #   @return [::Google::Protobuf::Duration]
    #     Required. The length of time into the future to forecast whether a
    #     time series will violate the threshold. If the predicted value is
    #     found to violate the threshold, and the violation is observed in all
    #     forecasts made for the configured `duration`, then the time series is
    #     considered to be failing.
    #     The forecast horizon can range from 1 hour to 60 hours.
    class ForecastOptions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition type that checks that monitored resources
  # are reporting data. The configuration defines a metric and
  # a set of monitored resources. The predicate is considered in violation
  # when a time series for the specified metric of a monitored
  # resource does not include any data in the specified `duration`.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A
  #     [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies which time series should be compared with the threshold.
  #
  #     The filter is similar to the one that is specified in the
  #     [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list)
  #     (that call is useful to verify the time series that will be retrieved /
  #     processed). The filter must specify the metric type and the resource
  #     type. Optionally, it can specify resource labels and metric labels.
  #     This field must not exceed 2048 Unicode characters in length.
  # @!attribute [rw] aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources). Multiple aggregations
  #     are applied in the order specified.
  #
  #     This field is similar to the one in the [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list).
  #     It is advisable to use the `ListTimeSeries` method when debugging this
  #     field.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must fail to report new
  #     data to be considered failing. The minimum value of this field
  #     is 120 seconds. Larger values that are a multiple of a
  #     minute--for example, 240 or 300 seconds--are supported.
  #     If an invalid value is given, an
  #     error will be returned. The `Duration.nanos` field is
  #     ignored.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`.
  class MetricAbsence
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that checks whether a log message in the [scoping
  # project](https://cloud.google.com/monitoring/api/v3#project_name)
  # satisfies the given filter. Logs from other projects in the metrics
  # scope are not evaluated.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A logs-based filter. See [Advanced Logs
  #     Queries](https://cloud.google.com/logging/docs/view/advanced-queries)
  #     for how this filter should be constructed.
  # @!attribute [rw] label_extractors
  #   @return [::Google::Protobuf::Map{::String => ::String}]
  #     Optional. A map from a label key to an extractor expression, which is
  #     used to extract the value for this label key. Each entry in this map is
  #     a specification for how data should be extracted from log entries that
  #     match `filter`. Each combination of extracted values is treated as a
  #     separate rule for the purposes of triggering notifications. Label keys
  #     and corresponding values can be used in notifications generated by this
  #     condition.
  #
  #     Please see [the documentation on logs-based metric
  #     `valueExtractor`s](https://cloud.google.com/logging/docs/reference/v2/rest/v2/projects.metrics#LogMetric.FIELDS.value_extractor)
  #     for syntax and examples.
  class LogMatch
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # @!attribute [rw] key
    #   @return [::String]
    # @!attribute [rw] value
    #   @return [::String]
    class LabelExtractorsEntry
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition type that allows alert policies to be defined using
  # [Monitoring Query Language](https://cloud.google.com/monitoring/mql).
  # @!attribute [rw] query
  #   @return [::String]
  #     [Monitoring Query Language](https://cloud.google.com/monitoring/mql)
  #     query that outputs a boolean stream.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must violate the
  #     threshold to be considered failing. Currently, only values
  #     that are a multiple of a minute--e.g., 0, 60, 120, or 300
  #     seconds--are supported. If an invalid value is given, an
  #     error will be returned. When choosing a duration, it is useful to
  #     keep in mind the frequency of the underlying time series data
  #     (which may also be affected by any alignments specified in the
  #     `aggregations` field); a good duration is long enough so that a single
  #     outlier does not generate spurious alerts, but short enough that
  #     unhealthy states are detected and alerted on quickly.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`,
  #     or by the ratio, if `denominator_filter` and `denominator_aggregations`
  #     are specified.
  # @!attribute [rw] evaluation_missing_data
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::EvaluationMissingData]
  #     A condition control that determines how metric-threshold conditions
  #     are evaluated when data stops arriving.
  class MonitoringQueryLanguageCondition
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that allows alert policies to be defined using
  # [Prometheus Query Language
  # (PromQL)](https://prometheus.io/docs/prometheus/latest/querying/basics/).
  #
  # The PrometheusQueryLanguageCondition message contains information
  # from a Prometheus alerting rule and its associated rule group.
  #
  # A Prometheus alerting rule is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/alerting_rules/).
  # The semantics of a Prometheus alerting rule is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/#rule).
  #
  # A Prometheus rule group is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/).
  # The semantics of a Prometheus rule group is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/#rule_group).
  #
  # Because Cloud Alerting has no representation of a Prometheus rule
  # group resource, we must embed the information of the parent rule
  # group inside each of the conditions that refer to it. We must also
  # update the contents of all Prometheus alerts in case the information
  # of their rule group changes.
  #
  # The PrometheusQueryLanguageCondition protocol buffer combines the
  # information of the corresponding rule group and alerting rule.
  # The structure of the PrometheusQueryLanguageCondition protocol buffer
  # does NOT mimic the structure of the Prometheus rule group and alerting
  # rule YAML declarations. The PrometheusQueryLanguageCondition protocol
  # buffer may change in the future to support future rule group and/or
  # alerting rule features. There are no new such features at the present
  # time (2023-06-26).
  # @!attribute [rw] query
  #   @return [::String]
  #     Required. The PromQL expression to evaluate. Every evaluation cycle
  #     this expression is evaluated at the current time, and all resultant
  #     time series become pending/firing alerts. This field must not be empty.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     Optional. Alerts are considered firing once their PromQL expression was
  #     evaluated to be "true" for this long.
  #     Alerts whose PromQL expression was not evaluated to be "true" for
  #     long enough are considered pending.
  #     Must be a non-negative duration or missing.
  #     This field is optional. Its default value is zero.
  # @!attribute [rw] evaluation_interval
  #   @return [::Google::Protobuf::Duration]
  #     Optional. How often this rule should be evaluated.
  #     Must be a positive multiple of 30 seconds or missing.
  #     This field is optional. Its default value is 30 seconds.
  #     If this PrometheusQueryLanguageCondition was generated from a
  #     Prometheus alerting rule, then this value should be taken from the
  #     enclosing rule group.
  # @!attribute [rw] labels
  #   @return [::Google::Protobuf::Map{::String => ::String}]
  #     Optional. Labels to add to or overwrite in the PromQL query result.
  #     Label names [must be
  #     valid](https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels).
  #     Label values can be [templatized by using
  #     variables](https://cloud.google.com/monitoring/alerts/doc-variables).
  #     The only available variable names are the names of the labels in the
  #     PromQL result, including "__name__" and "value". "labels" may be empty.
  # @!attribute [rw] rule_group
  #   @return [::String]
  #     Optional. The rule group name of this alert in the corresponding
  #     Prometheus configuration file.
  #
  #     Some external tools may require this field to be populated correctly
  #     in order to refer to the original Prometheus configuration file.
  #     The rule group name and the alert name are necessary to update the
  #     relevant AlertPolicies in case the definition of the rule group changes
  #     in the future.
  #
  #     This field is optional. If this field is not empty, then it must
  #     contain a valid UTF-8 string.
  #     This field may not exceed 2048 Unicode characters in length.
  # @!attribute [rw] alert_rule
  #   @return [::String]
  #     Optional. The alerting rule name of this alert in the corresponding
  #     Prometheus configuration file.
  #
  #     Some external tools may require this field to be populated correctly
  #     in order to refer to the original Prometheus configuration file.
  #     The rule group name and the alert name are necessary to update the
  #     relevant AlertPolicies in case the definition of the rule group changes
  #     in the future.
  #
  #     This field is optional. If this field is not empty, then it must be a
  #     [valid Prometheus label
  #     name](https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels).
  #     This field may not exceed 2048 Unicode characters in length.
  class PrometheusQueryLanguageCondition
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # @!attribute [rw] key
    #   @return [::String]
    # @!attribute [rw] value
    #   @return [::String]
    class LabelsEntry
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition control that determines how metric-threshold conditions
  # are evaluated when data stops arriving.
  # This control doesn't affect metric-absence policies.
  module EvaluationMissingData
    # An unspecified evaluation missing data option.  Equivalent to
    # EVALUATION_MISSING_DATA_NO_OP.
    EVALUATION_MISSING_DATA_UNSPECIFIED = 0

    # If there is no data to evaluate the condition, then evaluate the
    # condition as false.
    EVALUATION_MISSING_DATA_INACTIVE = 1

    # If there is no data to evaluate the condition, then evaluate the
    # condition as true.
    EVALUATION_MISSING_DATA_ACTIVE = 2

    # Do not evaluate the condition to any value if there is no data.
    EVALUATION_MISSING_DATA_NO_OP = 3
  end
end

#condition_monitoring_query_language ⇒ ::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::MonitoringQueryLanguageCondition

Returns A condition that uses the Monitoring Query Language to define alerts.

Returns:

• (::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::MonitoringQueryLanguageCondition) —

  A condition that uses the Monitoring Query Language to define alerts.

# File 'proto_docs/google/monitoring/v3/alert.rb', line 243

class Condition
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Specifies how many time series must fail a predicate to trigger a
  # condition. If not specified, then a `{count: 1}` trigger is used.
  # @!attribute [rw] count
  #   @return [::Integer]
  #     The absolute number of time series that must fail
  #     the predicate for the condition to be triggered.
  # @!attribute [rw] percent
  #   @return [::Float]
  #     The percentage of time series that must fail the
  #     predicate for the condition to be triggered.
  class Trigger
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that compares a collection of time series
  # against a threshold.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A
  #     [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies which time series should be compared with the threshold.
  #
  #     The filter is similar to the one that is specified in the
  #     [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list)
  #     (that call is useful to verify the time series that will be retrieved /
  #     processed). The filter must specify the metric type and the resource
  #     type. Optionally, it can specify resource labels and metric labels.
  #     This field must not exceed 2048 Unicode characters in length.
  # @!attribute [rw] aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources). Multiple aggregations
  #     are applied in the order specified.
  #
  #     This field is similar to the one in the [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list).
  #     It is advisable to use the `ListTimeSeries` method when debugging this
  #     field.
  # @!attribute [rw] denominator_filter
  #   @return [::String]
  #     A [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies a time series that should be used as the denominator of a
  #     ratio that will be compared with the threshold. If a
  #     `denominator_filter` is specified, the time series specified by the
  #     `filter` field will be used as the numerator.
  #
  #     The filter must specify the metric type and optionally may contain
  #     restrictions on resource type, resource labels, and metric labels.
  #     This field may not exceed 2048 Unicode characters in length.
  # @!attribute [rw] denominator_aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series
  #     selected by `denominatorFilter` as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources).
  #
  #     When computing ratios, the `aggregations` and
  #     `denominator_aggregations` fields must use the same alignment period
  #     and produce time series that have the same periodicity and labels.
  # @!attribute [rw] forecast_options
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::MetricThreshold::ForecastOptions]
  #     When this field is present, the `MetricThreshold` condition forecasts
  #     whether the time series is predicted to violate the threshold within
  #     the `forecast_horizon`. When this field is not set, the
  #     `MetricThreshold` tests the current value of the timeseries against the
  #     threshold.
  # @!attribute [rw] comparison
  #   @return [::Google::Cloud::Monitoring::V3::ComparisonType]
  #     The comparison to apply between the time series (indicated by `filter`
  #     and `aggregation`) and the threshold (indicated by `threshold_value`).
  #     The comparison is applied on each time series, with the time series
  #     on the left-hand side and the threshold on the right-hand side.
  #
  #     Only `COMPARISON_LT` and `COMPARISON_GT` are supported currently.
  # @!attribute [rw] threshold_value
  #   @return [::Float]
  #     A value against which to compare the time series.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must violate the
  #     threshold to be considered failing. Currently, only values
  #     that are a multiple of a minute--e.g., 0, 60, 120, or 300
  #     seconds--are supported. If an invalid value is given, an
  #     error will be returned. When choosing a duration, it is useful to
  #     keep in mind the frequency of the underlying time series data
  #     (which may also be affected by any alignments specified in the
  #     `aggregations` field); a good duration is long enough so that a single
  #     outlier does not generate spurious alerts, but short enough that
  #     unhealthy states are detected and alerted on quickly.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`,
  #     or by the ratio, if `denominator_filter` and `denominator_aggregations`
  #     are specified.
  # @!attribute [rw] evaluation_missing_data
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::EvaluationMissingData]
  #     A condition control that determines how metric-threshold conditions
  #     are evaluated when data stops arriving. To use this control, the value
  #     of the `duration` field must be greater than or equal to 60 seconds.
  class MetricThreshold
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Options used when forecasting the time series and testing
    # the predicted value against the threshold.
    # @!attribute [rw] forecast_horizon
    #   @return [::Google::Protobuf::Duration]
    #     Required. The length of time into the future to forecast whether a
    #     time series will violate the threshold. If the predicted value is
    #     found to violate the threshold, and the violation is observed in all
    #     forecasts made for the configured `duration`, then the time series is
    #     considered to be failing.
    #     The forecast horizon can range from 1 hour to 60 hours.
    class ForecastOptions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition type that checks that monitored resources
  # are reporting data. The configuration defines a metric and
  # a set of monitored resources. The predicate is considered in violation
  # when a time series for the specified metric of a monitored
  # resource does not include any data in the specified `duration`.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A
  #     [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies which time series should be compared with the threshold.
  #
  #     The filter is similar to the one that is specified in the
  #     [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list)
  #     (that call is useful to verify the time series that will be retrieved /
  #     processed). The filter must specify the metric type and the resource
  #     type. Optionally, it can specify resource labels and metric labels.
  #     This field must not exceed 2048 Unicode characters in length.
  # @!attribute [rw] aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources). Multiple aggregations
  #     are applied in the order specified.
  #
  #     This field is similar to the one in the [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list).
  #     It is advisable to use the `ListTimeSeries` method when debugging this
  #     field.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must fail to report new
  #     data to be considered failing. The minimum value of this field
  #     is 120 seconds. Larger values that are a multiple of a
  #     minute--for example, 240 or 300 seconds--are supported.
  #     If an invalid value is given, an
  #     error will be returned. The `Duration.nanos` field is
  #     ignored.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`.
  class MetricAbsence
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that checks whether a log message in the [scoping
  # project](https://cloud.google.com/monitoring/api/v3#project_name)
  # satisfies the given filter. Logs from other projects in the metrics
  # scope are not evaluated.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A logs-based filter. See [Advanced Logs
  #     Queries](https://cloud.google.com/logging/docs/view/advanced-queries)
  #     for how this filter should be constructed.
  # @!attribute [rw] label_extractors
  #   @return [::Google::Protobuf::Map{::String => ::String}]
  #     Optional. A map from a label key to an extractor expression, which is
  #     used to extract the value for this label key. Each entry in this map is
  #     a specification for how data should be extracted from log entries that
  #     match `filter`. Each combination of extracted values is treated as a
  #     separate rule for the purposes of triggering notifications. Label keys
  #     and corresponding values can be used in notifications generated by this
  #     condition.
  #
  #     Please see [the documentation on logs-based metric
  #     `valueExtractor`s](https://cloud.google.com/logging/docs/reference/v2/rest/v2/projects.metrics#LogMetric.FIELDS.value_extractor)
  #     for syntax and examples.
  class LogMatch
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # @!attribute [rw] key
    #   @return [::String]
    # @!attribute [rw] value
    #   @return [::String]
    class LabelExtractorsEntry
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition type that allows alert policies to be defined using
  # [Monitoring Query Language](https://cloud.google.com/monitoring/mql).
  # @!attribute [rw] query
  #   @return [::String]
  #     [Monitoring Query Language](https://cloud.google.com/monitoring/mql)
  #     query that outputs a boolean stream.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must violate the
  #     threshold to be considered failing. Currently, only values
  #     that are a multiple of a minute--e.g., 0, 60, 120, or 300
  #     seconds--are supported. If an invalid value is given, an
  #     error will be returned. When choosing a duration, it is useful to
  #     keep in mind the frequency of the underlying time series data
  #     (which may also be affected by any alignments specified in the
  #     `aggregations` field); a good duration is long enough so that a single
  #     outlier does not generate spurious alerts, but short enough that
  #     unhealthy states are detected and alerted on quickly.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`,
  #     or by the ratio, if `denominator_filter` and `denominator_aggregations`
  #     are specified.
  # @!attribute [rw] evaluation_missing_data
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::EvaluationMissingData]
  #     A condition control that determines how metric-threshold conditions
  #     are evaluated when data stops arriving.
  class MonitoringQueryLanguageCondition
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that allows alert policies to be defined using
  # [Prometheus Query Language
  # (PromQL)](https://prometheus.io/docs/prometheus/latest/querying/basics/).
  #
  # The PrometheusQueryLanguageCondition message contains information
  # from a Prometheus alerting rule and its associated rule group.
  #
  # A Prometheus alerting rule is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/alerting_rules/).
  # The semantics of a Prometheus alerting rule is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/#rule).
  #
  # A Prometheus rule group is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/).
  # The semantics of a Prometheus rule group is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/#rule_group).
  #
  # Because Cloud Alerting has no representation of a Prometheus rule
  # group resource, we must embed the information of the parent rule
  # group inside each of the conditions that refer to it. We must also
  # update the contents of all Prometheus alerts in case the information
  # of their rule group changes.
  #
  # The PrometheusQueryLanguageCondition protocol buffer combines the
  # information of the corresponding rule group and alerting rule.
  # The structure of the PrometheusQueryLanguageCondition protocol buffer
  # does NOT mimic the structure of the Prometheus rule group and alerting
  # rule YAML declarations. The PrometheusQueryLanguageCondition protocol
  # buffer may change in the future to support future rule group and/or
  # alerting rule features. There are no new such features at the present
  # time (2023-06-26).
  # @!attribute [rw] query
  #   @return [::String]
  #     Required. The PromQL expression to evaluate. Every evaluation cycle
  #     this expression is evaluated at the current time, and all resultant
  #     time series become pending/firing alerts. This field must not be empty.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     Optional. Alerts are considered firing once their PromQL expression was
  #     evaluated to be "true" for this long.
  #     Alerts whose PromQL expression was not evaluated to be "true" for
  #     long enough are considered pending.
  #     Must be a non-negative duration or missing.
  #     This field is optional. Its default value is zero.
  # @!attribute [rw] evaluation_interval
  #   @return [::Google::Protobuf::Duration]
  #     Optional. How often this rule should be evaluated.
  #     Must be a positive multiple of 30 seconds or missing.
  #     This field is optional. Its default value is 30 seconds.
  #     If this PrometheusQueryLanguageCondition was generated from a
  #     Prometheus alerting rule, then this value should be taken from the
  #     enclosing rule group.
  # @!attribute [rw] labels
  #   @return [::Google::Protobuf::Map{::String => ::String}]
  #     Optional. Labels to add to or overwrite in the PromQL query result.
  #     Label names [must be
  #     valid](https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels).
  #     Label values can be [templatized by using
  #     variables](https://cloud.google.com/monitoring/alerts/doc-variables).
  #     The only available variable names are the names of the labels in the
  #     PromQL result, including "__name__" and "value". "labels" may be empty.
  # @!attribute [rw] rule_group
  #   @return [::String]
  #     Optional. The rule group name of this alert in the corresponding
  #     Prometheus configuration file.
  #
  #     Some external tools may require this field to be populated correctly
  #     in order to refer to the original Prometheus configuration file.
  #     The rule group name and the alert name are necessary to update the
  #     relevant AlertPolicies in case the definition of the rule group changes
  #     in the future.
  #
  #     This field is optional. If this field is not empty, then it must
  #     contain a valid UTF-8 string.
  #     This field may not exceed 2048 Unicode characters in length.
  # @!attribute [rw] alert_rule
  #   @return [::String]
  #     Optional. The alerting rule name of this alert in the corresponding
  #     Prometheus configuration file.
  #
  #     Some external tools may require this field to be populated correctly
  #     in order to refer to the original Prometheus configuration file.
  #     The rule group name and the alert name are necessary to update the
  #     relevant AlertPolicies in case the definition of the rule group changes
  #     in the future.
  #
  #     This field is optional. If this field is not empty, then it must be a
  #     [valid Prometheus label
  #     name](https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels).
  #     This field may not exceed 2048 Unicode characters in length.
  class PrometheusQueryLanguageCondition
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # @!attribute [rw] key
    #   @return [::String]
    # @!attribute [rw] value
    #   @return [::String]
    class LabelsEntry
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition control that determines how metric-threshold conditions
  # are evaluated when data stops arriving.
  # This control doesn't affect metric-absence policies.
  module EvaluationMissingData
    # An unspecified evaluation missing data option.  Equivalent to
    # EVALUATION_MISSING_DATA_NO_OP.
    EVALUATION_MISSING_DATA_UNSPECIFIED = 0

    # If there is no data to evaluate the condition, then evaluate the
    # condition as false.
    EVALUATION_MISSING_DATA_INACTIVE = 1

    # If there is no data to evaluate the condition, then evaluate the
    # condition as true.
    EVALUATION_MISSING_DATA_ACTIVE = 2

    # Do not evaluate the condition to any value if there is no data.
    EVALUATION_MISSING_DATA_NO_OP = 3
  end
end

#condition_prometheus_query_language ⇒ ::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::PrometheusQueryLanguageCondition

Returns A condition that uses the Prometheus query language to define alerts.

Returns:

• (::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::PrometheusQueryLanguageCondition) —

  A condition that uses the Prometheus query language to define alerts.

# File 'proto_docs/google/monitoring/v3/alert.rb', line 243

class Condition
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Specifies how many time series must fail a predicate to trigger a
  # condition. If not specified, then a `{count: 1}` trigger is used.
  # @!attribute [rw] count
  #   @return [::Integer]
  #     The absolute number of time series that must fail
  #     the predicate for the condition to be triggered.
  # @!attribute [rw] percent
  #   @return [::Float]
  #     The percentage of time series that must fail the
  #     predicate for the condition to be triggered.
  class Trigger
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that compares a collection of time series
  # against a threshold.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A
  #     [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies which time series should be compared with the threshold.
  #
  #     The filter is similar to the one that is specified in the
  #     [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list)
  #     (that call is useful to verify the time series that will be retrieved /
  #     processed). The filter must specify the metric type and the resource
  #     type. Optionally, it can specify resource labels and metric labels.
  #     This field must not exceed 2048 Unicode characters in length.
  # @!attribute [rw] aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources). Multiple aggregations
  #     are applied in the order specified.
  #
  #     This field is similar to the one in the [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list).
  #     It is advisable to use the `ListTimeSeries` method when debugging this
  #     field.
  # @!attribute [rw] denominator_filter
  #   @return [::String]
  #     A [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies a time series that should be used as the denominator of a
  #     ratio that will be compared with the threshold. If a
  #     `denominator_filter` is specified, the time series specified by the
  #     `filter` field will be used as the numerator.
  #
  #     The filter must specify the metric type and optionally may contain
  #     restrictions on resource type, resource labels, and metric labels.
  #     This field may not exceed 2048 Unicode characters in length.
  # @!attribute [rw] denominator_aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series
  #     selected by `denominatorFilter` as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources).
  #
  #     When computing ratios, the `aggregations` and
  #     `denominator_aggregations` fields must use the same alignment period
  #     and produce time series that have the same periodicity and labels.
  # @!attribute [rw] forecast_options
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::MetricThreshold::ForecastOptions]
  #     When this field is present, the `MetricThreshold` condition forecasts
  #     whether the time series is predicted to violate the threshold within
  #     the `forecast_horizon`. When this field is not set, the
  #     `MetricThreshold` tests the current value of the timeseries against the
  #     threshold.
  # @!attribute [rw] comparison
  #   @return [::Google::Cloud::Monitoring::V3::ComparisonType]
  #     The comparison to apply between the time series (indicated by `filter`
  #     and `aggregation`) and the threshold (indicated by `threshold_value`).
  #     The comparison is applied on each time series, with the time series
  #     on the left-hand side and the threshold on the right-hand side.
  #
  #     Only `COMPARISON_LT` and `COMPARISON_GT` are supported currently.
  # @!attribute [rw] threshold_value
  #   @return [::Float]
  #     A value against which to compare the time series.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must violate the
  #     threshold to be considered failing. Currently, only values
  #     that are a multiple of a minute--e.g., 0, 60, 120, or 300
  #     seconds--are supported. If an invalid value is given, an
  #     error will be returned. When choosing a duration, it is useful to
  #     keep in mind the frequency of the underlying time series data
  #     (which may also be affected by any alignments specified in the
  #     `aggregations` field); a good duration is long enough so that a single
  #     outlier does not generate spurious alerts, but short enough that
  #     unhealthy states are detected and alerted on quickly.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`,
  #     or by the ratio, if `denominator_filter` and `denominator_aggregations`
  #     are specified.
  # @!attribute [rw] evaluation_missing_data
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::EvaluationMissingData]
  #     A condition control that determines how metric-threshold conditions
  #     are evaluated when data stops arriving. To use this control, the value
  #     of the `duration` field must be greater than or equal to 60 seconds.
  class MetricThreshold
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Options used when forecasting the time series and testing
    # the predicted value against the threshold.
    # @!attribute [rw] forecast_horizon
    #   @return [::Google::Protobuf::Duration]
    #     Required. The length of time into the future to forecast whether a
    #     time series will violate the threshold. If the predicted value is
    #     found to violate the threshold, and the violation is observed in all
    #     forecasts made for the configured `duration`, then the time series is
    #     considered to be failing.
    #     The forecast horizon can range from 1 hour to 60 hours.
    class ForecastOptions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition type that checks that monitored resources
  # are reporting data. The configuration defines a metric and
  # a set of monitored resources. The predicate is considered in violation
  # when a time series for the specified metric of a monitored
  # resource does not include any data in the specified `duration`.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A
  #     [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies which time series should be compared with the threshold.
  #
  #     The filter is similar to the one that is specified in the
  #     [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list)
  #     (that call is useful to verify the time series that will be retrieved /
  #     processed). The filter must specify the metric type and the resource
  #     type. Optionally, it can specify resource labels and metric labels.
  #     This field must not exceed 2048 Unicode characters in length.
  # @!attribute [rw] aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources). Multiple aggregations
  #     are applied in the order specified.
  #
  #     This field is similar to the one in the [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list).
  #     It is advisable to use the `ListTimeSeries` method when debugging this
  #     field.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must fail to report new
  #     data to be considered failing. The minimum value of this field
  #     is 120 seconds. Larger values that are a multiple of a
  #     minute--for example, 240 or 300 seconds--are supported.
  #     If an invalid value is given, an
  #     error will be returned. The `Duration.nanos` field is
  #     ignored.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`.
  class MetricAbsence
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that checks whether a log message in the [scoping
  # project](https://cloud.google.com/monitoring/api/v3#project_name)
  # satisfies the given filter. Logs from other projects in the metrics
  # scope are not evaluated.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A logs-based filter. See [Advanced Logs
  #     Queries](https://cloud.google.com/logging/docs/view/advanced-queries)
  #     for how this filter should be constructed.
  # @!attribute [rw] label_extractors
  #   @return [::Google::Protobuf::Map{::String => ::String}]
  #     Optional. A map from a label key to an extractor expression, which is
  #     used to extract the value for this label key. Each entry in this map is
  #     a specification for how data should be extracted from log entries that
  #     match `filter`. Each combination of extracted values is treated as a
  #     separate rule for the purposes of triggering notifications. Label keys
  #     and corresponding values can be used in notifications generated by this
  #     condition.
  #
  #     Please see [the documentation on logs-based metric
  #     `valueExtractor`s](https://cloud.google.com/logging/docs/reference/v2/rest/v2/projects.metrics#LogMetric.FIELDS.value_extractor)
  #     for syntax and examples.
  class LogMatch
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # @!attribute [rw] key
    #   @return [::String]
    # @!attribute [rw] value
    #   @return [::String]
    class LabelExtractorsEntry
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition type that allows alert policies to be defined using
  # [Monitoring Query Language](https://cloud.google.com/monitoring/mql).
  # @!attribute [rw] query
  #   @return [::String]
  #     [Monitoring Query Language](https://cloud.google.com/monitoring/mql)
  #     query that outputs a boolean stream.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must violate the
  #     threshold to be considered failing. Currently, only values
  #     that are a multiple of a minute--e.g., 0, 60, 120, or 300
  #     seconds--are supported. If an invalid value is given, an
  #     error will be returned. When choosing a duration, it is useful to
  #     keep in mind the frequency of the underlying time series data
  #     (which may also be affected by any alignments specified in the
  #     `aggregations` field); a good duration is long enough so that a single
  #     outlier does not generate spurious alerts, but short enough that
  #     unhealthy states are detected and alerted on quickly.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`,
  #     or by the ratio, if `denominator_filter` and `denominator_aggregations`
  #     are specified.
  # @!attribute [rw] evaluation_missing_data
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::EvaluationMissingData]
  #     A condition control that determines how metric-threshold conditions
  #     are evaluated when data stops arriving.
  class MonitoringQueryLanguageCondition
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that allows alert policies to be defined using
  # [Prometheus Query Language
  # (PromQL)](https://prometheus.io/docs/prometheus/latest/querying/basics/).
  #
  # The PrometheusQueryLanguageCondition message contains information
  # from a Prometheus alerting rule and its associated rule group.
  #
  # A Prometheus alerting rule is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/alerting_rules/).
  # The semantics of a Prometheus alerting rule is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/#rule).
  #
  # A Prometheus rule group is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/).
  # The semantics of a Prometheus rule group is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/#rule_group).
  #
  # Because Cloud Alerting has no representation of a Prometheus rule
  # group resource, we must embed the information of the parent rule
  # group inside each of the conditions that refer to it. We must also
  # update the contents of all Prometheus alerts in case the information
  # of their rule group changes.
  #
  # The PrometheusQueryLanguageCondition protocol buffer combines the
  # information of the corresponding rule group and alerting rule.
  # The structure of the PrometheusQueryLanguageCondition protocol buffer
  # does NOT mimic the structure of the Prometheus rule group and alerting
  # rule YAML declarations. The PrometheusQueryLanguageCondition protocol
  # buffer may change in the future to support future rule group and/or
  # alerting rule features. There are no new such features at the present
  # time (2023-06-26).
  # @!attribute [rw] query
  #   @return [::String]
  #     Required. The PromQL expression to evaluate. Every evaluation cycle
  #     this expression is evaluated at the current time, and all resultant
  #     time series become pending/firing alerts. This field must not be empty.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     Optional. Alerts are considered firing once their PromQL expression was
  #     evaluated to be "true" for this long.
  #     Alerts whose PromQL expression was not evaluated to be "true" for
  #     long enough are considered pending.
  #     Must be a non-negative duration or missing.
  #     This field is optional. Its default value is zero.
  # @!attribute [rw] evaluation_interval
  #   @return [::Google::Protobuf::Duration]
  #     Optional. How often this rule should be evaluated.
  #     Must be a positive multiple of 30 seconds or missing.
  #     This field is optional. Its default value is 30 seconds.
  #     If this PrometheusQueryLanguageCondition was generated from a
  #     Prometheus alerting rule, then this value should be taken from the
  #     enclosing rule group.
  # @!attribute [rw] labels
  #   @return [::Google::Protobuf::Map{::String => ::String}]
  #     Optional. Labels to add to or overwrite in the PromQL query result.
  #     Label names [must be
  #     valid](https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels).
  #     Label values can be [templatized by using
  #     variables](https://cloud.google.com/monitoring/alerts/doc-variables).
  #     The only available variable names are the names of the labels in the
  #     PromQL result, including "__name__" and "value". "labels" may be empty.
  # @!attribute [rw] rule_group
  #   @return [::String]
  #     Optional. The rule group name of this alert in the corresponding
  #     Prometheus configuration file.
  #
  #     Some external tools may require this field to be populated correctly
  #     in order to refer to the original Prometheus configuration file.
  #     The rule group name and the alert name are necessary to update the
  #     relevant AlertPolicies in case the definition of the rule group changes
  #     in the future.
  #
  #     This field is optional. If this field is not empty, then it must
  #     contain a valid UTF-8 string.
  #     This field may not exceed 2048 Unicode characters in length.
  # @!attribute [rw] alert_rule
  #   @return [::String]
  #     Optional. The alerting rule name of this alert in the corresponding
  #     Prometheus configuration file.
  #
  #     Some external tools may require this field to be populated correctly
  #     in order to refer to the original Prometheus configuration file.
  #     The rule group name and the alert name are necessary to update the
  #     relevant AlertPolicies in case the definition of the rule group changes
  #     in the future.
  #
  #     This field is optional. If this field is not empty, then it must be a
  #     [valid Prometheus label
  #     name](https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels).
  #     This field may not exceed 2048 Unicode characters in length.
  class PrometheusQueryLanguageCondition
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # @!attribute [rw] key
    #   @return [::String]
    # @!attribute [rw] value
    #   @return [::String]
    class LabelsEntry
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition control that determines how metric-threshold conditions
  # are evaluated when data stops arriving.
  # This control doesn't affect metric-absence policies.
  module EvaluationMissingData
    # An unspecified evaluation missing data option.  Equivalent to
    # EVALUATION_MISSING_DATA_NO_OP.
    EVALUATION_MISSING_DATA_UNSPECIFIED = 0

    # If there is no data to evaluate the condition, then evaluate the
    # condition as false.
    EVALUATION_MISSING_DATA_INACTIVE = 1

    # If there is no data to evaluate the condition, then evaluate the
    # condition as true.
    EVALUATION_MISSING_DATA_ACTIVE = 2

    # Do not evaluate the condition to any value if there is no data.
    EVALUATION_MISSING_DATA_NO_OP = 3
  end
end

#condition_threshold ⇒ ::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::MetricThreshold

Returns A condition that compares a time series against a threshold.

Returns:

• (::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::MetricThreshold) —

  A condition that compares a time series against a threshold.

# File 'proto_docs/google/monitoring/v3/alert.rb', line 243

class Condition
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Specifies how many time series must fail a predicate to trigger a
  # condition. If not specified, then a `{count: 1}` trigger is used.
  # @!attribute [rw] count
  #   @return [::Integer]
  #     The absolute number of time series that must fail
  #     the predicate for the condition to be triggered.
  # @!attribute [rw] percent
  #   @return [::Float]
  #     The percentage of time series that must fail the
  #     predicate for the condition to be triggered.
  class Trigger
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that compares a collection of time series
  # against a threshold.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A
  #     [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies which time series should be compared with the threshold.
  #
  #     The filter is similar to the one that is specified in the
  #     [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list)
  #     (that call is useful to verify the time series that will be retrieved /
  #     processed). The filter must specify the metric type and the resource
  #     type. Optionally, it can specify resource labels and metric labels.
  #     This field must not exceed 2048 Unicode characters in length.
  # @!attribute [rw] aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources). Multiple aggregations
  #     are applied in the order specified.
  #
  #     This field is similar to the one in the [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list).
  #     It is advisable to use the `ListTimeSeries` method when debugging this
  #     field.
  # @!attribute [rw] denominator_filter
  #   @return [::String]
  #     A [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies a time series that should be used as the denominator of a
  #     ratio that will be compared with the threshold. If a
  #     `denominator_filter` is specified, the time series specified by the
  #     `filter` field will be used as the numerator.
  #
  #     The filter must specify the metric type and optionally may contain
  #     restrictions on resource type, resource labels, and metric labels.
  #     This field may not exceed 2048 Unicode characters in length.
  # @!attribute [rw] denominator_aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series
  #     selected by `denominatorFilter` as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources).
  #
  #     When computing ratios, the `aggregations` and
  #     `denominator_aggregations` fields must use the same alignment period
  #     and produce time series that have the same periodicity and labels.
  # @!attribute [rw] forecast_options
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::MetricThreshold::ForecastOptions]
  #     When this field is present, the `MetricThreshold` condition forecasts
  #     whether the time series is predicted to violate the threshold within
  #     the `forecast_horizon`. When this field is not set, the
  #     `MetricThreshold` tests the current value of the timeseries against the
  #     threshold.
  # @!attribute [rw] comparison
  #   @return [::Google::Cloud::Monitoring::V3::ComparisonType]
  #     The comparison to apply between the time series (indicated by `filter`
  #     and `aggregation`) and the threshold (indicated by `threshold_value`).
  #     The comparison is applied on each time series, with the time series
  #     on the left-hand side and the threshold on the right-hand side.
  #
  #     Only `COMPARISON_LT` and `COMPARISON_GT` are supported currently.
  # @!attribute [rw] threshold_value
  #   @return [::Float]
  #     A value against which to compare the time series.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must violate the
  #     threshold to be considered failing. Currently, only values
  #     that are a multiple of a minute--e.g., 0, 60, 120, or 300
  #     seconds--are supported. If an invalid value is given, an
  #     error will be returned. When choosing a duration, it is useful to
  #     keep in mind the frequency of the underlying time series data
  #     (which may also be affected by any alignments specified in the
  #     `aggregations` field); a good duration is long enough so that a single
  #     outlier does not generate spurious alerts, but short enough that
  #     unhealthy states are detected and alerted on quickly.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`,
  #     or by the ratio, if `denominator_filter` and `denominator_aggregations`
  #     are specified.
  # @!attribute [rw] evaluation_missing_data
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::EvaluationMissingData]
  #     A condition control that determines how metric-threshold conditions
  #     are evaluated when data stops arriving. To use this control, the value
  #     of the `duration` field must be greater than or equal to 60 seconds.
  class MetricThreshold
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Options used when forecasting the time series and testing
    # the predicted value against the threshold.
    # @!attribute [rw] forecast_horizon
    #   @return [::Google::Protobuf::Duration]
    #     Required. The length of time into the future to forecast whether a
    #     time series will violate the threshold. If the predicted value is
    #     found to violate the threshold, and the violation is observed in all
    #     forecasts made for the configured `duration`, then the time series is
    #     considered to be failing.
    #     The forecast horizon can range from 1 hour to 60 hours.
    class ForecastOptions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition type that checks that monitored resources
  # are reporting data. The configuration defines a metric and
  # a set of monitored resources. The predicate is considered in violation
  # when a time series for the specified metric of a monitored
  # resource does not include any data in the specified `duration`.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A
  #     [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies which time series should be compared with the threshold.
  #
  #     The filter is similar to the one that is specified in the
  #     [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list)
  #     (that call is useful to verify the time series that will be retrieved /
  #     processed). The filter must specify the metric type and the resource
  #     type. Optionally, it can specify resource labels and metric labels.
  #     This field must not exceed 2048 Unicode characters in length.
  # @!attribute [rw] aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources). Multiple aggregations
  #     are applied in the order specified.
  #
  #     This field is similar to the one in the [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list).
  #     It is advisable to use the `ListTimeSeries` method when debugging this
  #     field.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must fail to report new
  #     data to be considered failing. The minimum value of this field
  #     is 120 seconds. Larger values that are a multiple of a
  #     minute--for example, 240 or 300 seconds--are supported.
  #     If an invalid value is given, an
  #     error will be returned. The `Duration.nanos` field is
  #     ignored.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`.
  class MetricAbsence
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that checks whether a log message in the [scoping
  # project](https://cloud.google.com/monitoring/api/v3#project_name)
  # satisfies the given filter. Logs from other projects in the metrics
  # scope are not evaluated.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A logs-based filter. See [Advanced Logs
  #     Queries](https://cloud.google.com/logging/docs/view/advanced-queries)
  #     for how this filter should be constructed.
  # @!attribute [rw] label_extractors
  #   @return [::Google::Protobuf::Map{::String => ::String}]
  #     Optional. A map from a label key to an extractor expression, which is
  #     used to extract the value for this label key. Each entry in this map is
  #     a specification for how data should be extracted from log entries that
  #     match `filter`. Each combination of extracted values is treated as a
  #     separate rule for the purposes of triggering notifications. Label keys
  #     and corresponding values can be used in notifications generated by this
  #     condition.
  #
  #     Please see [the documentation on logs-based metric
  #     `valueExtractor`s](https://cloud.google.com/logging/docs/reference/v2/rest/v2/projects.metrics#LogMetric.FIELDS.value_extractor)
  #     for syntax and examples.
  class LogMatch
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # @!attribute [rw] key
    #   @return [::String]
    # @!attribute [rw] value
    #   @return [::String]
    class LabelExtractorsEntry
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition type that allows alert policies to be defined using
  # [Monitoring Query Language](https://cloud.google.com/monitoring/mql).
  # @!attribute [rw] query
  #   @return [::String]
  #     [Monitoring Query Language](https://cloud.google.com/monitoring/mql)
  #     query that outputs a boolean stream.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must violate the
  #     threshold to be considered failing. Currently, only values
  #     that are a multiple of a minute--e.g., 0, 60, 120, or 300
  #     seconds--are supported. If an invalid value is given, an
  #     error will be returned. When choosing a duration, it is useful to
  #     keep in mind the frequency of the underlying time series data
  #     (which may also be affected by any alignments specified in the
  #     `aggregations` field); a good duration is long enough so that a single
  #     outlier does not generate spurious alerts, but short enough that
  #     unhealthy states are detected and alerted on quickly.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`,
  #     or by the ratio, if `denominator_filter` and `denominator_aggregations`
  #     are specified.
  # @!attribute [rw] evaluation_missing_data
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::EvaluationMissingData]
  #     A condition control that determines how metric-threshold conditions
  #     are evaluated when data stops arriving.
  class MonitoringQueryLanguageCondition
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that allows alert policies to be defined using
  # [Prometheus Query Language
  # (PromQL)](https://prometheus.io/docs/prometheus/latest/querying/basics/).
  #
  # The PrometheusQueryLanguageCondition message contains information
  # from a Prometheus alerting rule and its associated rule group.
  #
  # A Prometheus alerting rule is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/alerting_rules/).
  # The semantics of a Prometheus alerting rule is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/#rule).
  #
  # A Prometheus rule group is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/).
  # The semantics of a Prometheus rule group is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/#rule_group).
  #
  # Because Cloud Alerting has no representation of a Prometheus rule
  # group resource, we must embed the information of the parent rule
  # group inside each of the conditions that refer to it. We must also
  # update the contents of all Prometheus alerts in case the information
  # of their rule group changes.
  #
  # The PrometheusQueryLanguageCondition protocol buffer combines the
  # information of the corresponding rule group and alerting rule.
  # The structure of the PrometheusQueryLanguageCondition protocol buffer
  # does NOT mimic the structure of the Prometheus rule group and alerting
  # rule YAML declarations. The PrometheusQueryLanguageCondition protocol
  # buffer may change in the future to support future rule group and/or
  # alerting rule features. There are no new such features at the present
  # time (2023-06-26).
  # @!attribute [rw] query
  #   @return [::String]
  #     Required. The PromQL expression to evaluate. Every evaluation cycle
  #     this expression is evaluated at the current time, and all resultant
  #     time series become pending/firing alerts. This field must not be empty.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     Optional. Alerts are considered firing once their PromQL expression was
  #     evaluated to be "true" for this long.
  #     Alerts whose PromQL expression was not evaluated to be "true" for
  #     long enough are considered pending.
  #     Must be a non-negative duration or missing.
  #     This field is optional. Its default value is zero.
  # @!attribute [rw] evaluation_interval
  #   @return [::Google::Protobuf::Duration]
  #     Optional. How often this rule should be evaluated.
  #     Must be a positive multiple of 30 seconds or missing.
  #     This field is optional. Its default value is 30 seconds.
  #     If this PrometheusQueryLanguageCondition was generated from a
  #     Prometheus alerting rule, then this value should be taken from the
  #     enclosing rule group.
  # @!attribute [rw] labels
  #   @return [::Google::Protobuf::Map{::String => ::String}]
  #     Optional. Labels to add to or overwrite in the PromQL query result.
  #     Label names [must be
  #     valid](https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels).
  #     Label values can be [templatized by using
  #     variables](https://cloud.google.com/monitoring/alerts/doc-variables).
  #     The only available variable names are the names of the labels in the
  #     PromQL result, including "__name__" and "value". "labels" may be empty.
  # @!attribute [rw] rule_group
  #   @return [::String]
  #     Optional. The rule group name of this alert in the corresponding
  #     Prometheus configuration file.
  #
  #     Some external tools may require this field to be populated correctly
  #     in order to refer to the original Prometheus configuration file.
  #     The rule group name and the alert name are necessary to update the
  #     relevant AlertPolicies in case the definition of the rule group changes
  #     in the future.
  #
  #     This field is optional. If this field is not empty, then it must
  #     contain a valid UTF-8 string.
  #     This field may not exceed 2048 Unicode characters in length.
  # @!attribute [rw] alert_rule
  #   @return [::String]
  #     Optional. The alerting rule name of this alert in the corresponding
  #     Prometheus configuration file.
  #
  #     Some external tools may require this field to be populated correctly
  #     in order to refer to the original Prometheus configuration file.
  #     The rule group name and the alert name are necessary to update the
  #     relevant AlertPolicies in case the definition of the rule group changes
  #     in the future.
  #
  #     This field is optional. If this field is not empty, then it must be a
  #     [valid Prometheus label
  #     name](https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels).
  #     This field may not exceed 2048 Unicode characters in length.
  class PrometheusQueryLanguageCondition
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # @!attribute [rw] key
    #   @return [::String]
    # @!attribute [rw] value
    #   @return [::String]
    class LabelsEntry
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition control that determines how metric-threshold conditions
  # are evaluated when data stops arriving.
  # This control doesn't affect metric-absence policies.
  module EvaluationMissingData
    # An unspecified evaluation missing data option.  Equivalent to
    # EVALUATION_MISSING_DATA_NO_OP.
    EVALUATION_MISSING_DATA_UNSPECIFIED = 0

    # If there is no data to evaluate the condition, then evaluate the
    # condition as false.
    EVALUATION_MISSING_DATA_INACTIVE = 1

    # If there is no data to evaluate the condition, then evaluate the
    # condition as true.
    EVALUATION_MISSING_DATA_ACTIVE = 2

    # Do not evaluate the condition to any value if there is no data.
    EVALUATION_MISSING_DATA_NO_OP = 3
  end
end

#display_name ⇒ ::String

Returns A short name or phrase used to identify the condition in dashboards, notifications, and incidents. To avoid confusion, don't use the same display name for multiple conditions in the same policy.

Returns:

• (::String) —

  A short name or phrase used to identify the condition in dashboards, notifications, and incidents. To avoid confusion, don't use the same display name for multiple conditions in the same policy.

# File 'proto_docs/google/monitoring/v3/alert.rb', line 243

class Condition
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Specifies how many time series must fail a predicate to trigger a
  # condition. If not specified, then a `{count: 1}` trigger is used.
  # @!attribute [rw] count
  #   @return [::Integer]
  #     The absolute number of time series that must fail
  #     the predicate for the condition to be triggered.
  # @!attribute [rw] percent
  #   @return [::Float]
  #     The percentage of time series that must fail the
  #     predicate for the condition to be triggered.
  class Trigger
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that compares a collection of time series
  # against a threshold.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A
  #     [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies which time series should be compared with the threshold.
  #
  #     The filter is similar to the one that is specified in the
  #     [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list)
  #     (that call is useful to verify the time series that will be retrieved /
  #     processed). The filter must specify the metric type and the resource
  #     type. Optionally, it can specify resource labels and metric labels.
  #     This field must not exceed 2048 Unicode characters in length.
  # @!attribute [rw] aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources). Multiple aggregations
  #     are applied in the order specified.
  #
  #     This field is similar to the one in the [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list).
  #     It is advisable to use the `ListTimeSeries` method when debugging this
  #     field.
  # @!attribute [rw] denominator_filter
  #   @return [::String]
  #     A [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies a time series that should be used as the denominator of a
  #     ratio that will be compared with the threshold. If a
  #     `denominator_filter` is specified, the time series specified by the
  #     `filter` field will be used as the numerator.
  #
  #     The filter must specify the metric type and optionally may contain
  #     restrictions on resource type, resource labels, and metric labels.
  #     This field may not exceed 2048 Unicode characters in length.
  # @!attribute [rw] denominator_aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series
  #     selected by `denominatorFilter` as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources).
  #
  #     When computing ratios, the `aggregations` and
  #     `denominator_aggregations` fields must use the same alignment period
  #     and produce time series that have the same periodicity and labels.
  # @!attribute [rw] forecast_options
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::MetricThreshold::ForecastOptions]
  #     When this field is present, the `MetricThreshold` condition forecasts
  #     whether the time series is predicted to violate the threshold within
  #     the `forecast_horizon`. When this field is not set, the
  #     `MetricThreshold` tests the current value of the timeseries against the
  #     threshold.
  # @!attribute [rw] comparison
  #   @return [::Google::Cloud::Monitoring::V3::ComparisonType]
  #     The comparison to apply between the time series (indicated by `filter`
  #     and `aggregation`) and the threshold (indicated by `threshold_value`).
  #     The comparison is applied on each time series, with the time series
  #     on the left-hand side and the threshold on the right-hand side.
  #
  #     Only `COMPARISON_LT` and `COMPARISON_GT` are supported currently.
  # @!attribute [rw] threshold_value
  #   @return [::Float]
  #     A value against which to compare the time series.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must violate the
  #     threshold to be considered failing. Currently, only values
  #     that are a multiple of a minute--e.g., 0, 60, 120, or 300
  #     seconds--are supported. If an invalid value is given, an
  #     error will be returned. When choosing a duration, it is useful to
  #     keep in mind the frequency of the underlying time series data
  #     (which may also be affected by any alignments specified in the
  #     `aggregations` field); a good duration is long enough so that a single
  #     outlier does not generate spurious alerts, but short enough that
  #     unhealthy states are detected and alerted on quickly.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`,
  #     or by the ratio, if `denominator_filter` and `denominator_aggregations`
  #     are specified.
  # @!attribute [rw] evaluation_missing_data
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::EvaluationMissingData]
  #     A condition control that determines how metric-threshold conditions
  #     are evaluated when data stops arriving. To use this control, the value
  #     of the `duration` field must be greater than or equal to 60 seconds.
  class MetricThreshold
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Options used when forecasting the time series and testing
    # the predicted value against the threshold.
    # @!attribute [rw] forecast_horizon
    #   @return [::Google::Protobuf::Duration]
    #     Required. The length of time into the future to forecast whether a
    #     time series will violate the threshold. If the predicted value is
    #     found to violate the threshold, and the violation is observed in all
    #     forecasts made for the configured `duration`, then the time series is
    #     considered to be failing.
    #     The forecast horizon can range from 1 hour to 60 hours.
    class ForecastOptions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition type that checks that monitored resources
  # are reporting data. The configuration defines a metric and
  # a set of monitored resources. The predicate is considered in violation
  # when a time series for the specified metric of a monitored
  # resource does not include any data in the specified `duration`.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A
  #     [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies which time series should be compared with the threshold.
  #
  #     The filter is similar to the one that is specified in the
  #     [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list)
  #     (that call is useful to verify the time series that will be retrieved /
  #     processed). The filter must specify the metric type and the resource
  #     type. Optionally, it can specify resource labels and metric labels.
  #     This field must not exceed 2048 Unicode characters in length.
  # @!attribute [rw] aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources). Multiple aggregations
  #     are applied in the order specified.
  #
  #     This field is similar to the one in the [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list).
  #     It is advisable to use the `ListTimeSeries` method when debugging this
  #     field.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must fail to report new
  #     data to be considered failing. The minimum value of this field
  #     is 120 seconds. Larger values that are a multiple of a
  #     minute--for example, 240 or 300 seconds--are supported.
  #     If an invalid value is given, an
  #     error will be returned. The `Duration.nanos` field is
  #     ignored.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`.
  class MetricAbsence
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that checks whether a log message in the [scoping
  # project](https://cloud.google.com/monitoring/api/v3#project_name)
  # satisfies the given filter. Logs from other projects in the metrics
  # scope are not evaluated.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A logs-based filter. See [Advanced Logs
  #     Queries](https://cloud.google.com/logging/docs/view/advanced-queries)
  #     for how this filter should be constructed.
  # @!attribute [rw] label_extractors
  #   @return [::Google::Protobuf::Map{::String => ::String}]
  #     Optional. A map from a label key to an extractor expression, which is
  #     used to extract the value for this label key. Each entry in this map is
  #     a specification for how data should be extracted from log entries that
  #     match `filter`. Each combination of extracted values is treated as a
  #     separate rule for the purposes of triggering notifications. Label keys
  #     and corresponding values can be used in notifications generated by this
  #     condition.
  #
  #     Please see [the documentation on logs-based metric
  #     `valueExtractor`s](https://cloud.google.com/logging/docs/reference/v2/rest/v2/projects.metrics#LogMetric.FIELDS.value_extractor)
  #     for syntax and examples.
  class LogMatch
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # @!attribute [rw] key
    #   @return [::String]
    # @!attribute [rw] value
    #   @return [::String]
    class LabelExtractorsEntry
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition type that allows alert policies to be defined using
  # [Monitoring Query Language](https://cloud.google.com/monitoring/mql).
  # @!attribute [rw] query
  #   @return [::String]
  #     [Monitoring Query Language](https://cloud.google.com/monitoring/mql)
  #     query that outputs a boolean stream.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must violate the
  #     threshold to be considered failing. Currently, only values
  #     that are a multiple of a minute--e.g., 0, 60, 120, or 300
  #     seconds--are supported. If an invalid value is given, an
  #     error will be returned. When choosing a duration, it is useful to
  #     keep in mind the frequency of the underlying time series data
  #     (which may also be affected by any alignments specified in the
  #     `aggregations` field); a good duration is long enough so that a single
  #     outlier does not generate spurious alerts, but short enough that
  #     unhealthy states are detected and alerted on quickly.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`,
  #     or by the ratio, if `denominator_filter` and `denominator_aggregations`
  #     are specified.
  # @!attribute [rw] evaluation_missing_data
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::EvaluationMissingData]
  #     A condition control that determines how metric-threshold conditions
  #     are evaluated when data stops arriving.
  class MonitoringQueryLanguageCondition
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that allows alert policies to be defined using
  # [Prometheus Query Language
  # (PromQL)](https://prometheus.io/docs/prometheus/latest/querying/basics/).
  #
  # The PrometheusQueryLanguageCondition message contains information
  # from a Prometheus alerting rule and its associated rule group.
  #
  # A Prometheus alerting rule is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/alerting_rules/).
  # The semantics of a Prometheus alerting rule is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/#rule).
  #
  # A Prometheus rule group is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/).
  # The semantics of a Prometheus rule group is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/#rule_group).
  #
  # Because Cloud Alerting has no representation of a Prometheus rule
  # group resource, we must embed the information of the parent rule
  # group inside each of the conditions that refer to it. We must also
  # update the contents of all Prometheus alerts in case the information
  # of their rule group changes.
  #
  # The PrometheusQueryLanguageCondition protocol buffer combines the
  # information of the corresponding rule group and alerting rule.
  # The structure of the PrometheusQueryLanguageCondition protocol buffer
  # does NOT mimic the structure of the Prometheus rule group and alerting
  # rule YAML declarations. The PrometheusQueryLanguageCondition protocol
  # buffer may change in the future to support future rule group and/or
  # alerting rule features. There are no new such features at the present
  # time (2023-06-26).
  # @!attribute [rw] query
  #   @return [::String]
  #     Required. The PromQL expression to evaluate. Every evaluation cycle
  #     this expression is evaluated at the current time, and all resultant
  #     time series become pending/firing alerts. This field must not be empty.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     Optional. Alerts are considered firing once their PromQL expression was
  #     evaluated to be "true" for this long.
  #     Alerts whose PromQL expression was not evaluated to be "true" for
  #     long enough are considered pending.
  #     Must be a non-negative duration or missing.
  #     This field is optional. Its default value is zero.
  # @!attribute [rw] evaluation_interval
  #   @return [::Google::Protobuf::Duration]
  #     Optional. How often this rule should be evaluated.
  #     Must be a positive multiple of 30 seconds or missing.
  #     This field is optional. Its default value is 30 seconds.
  #     If this PrometheusQueryLanguageCondition was generated from a
  #     Prometheus alerting rule, then this value should be taken from the
  #     enclosing rule group.
  # @!attribute [rw] labels
  #   @return [::Google::Protobuf::Map{::String => ::String}]
  #     Optional. Labels to add to or overwrite in the PromQL query result.
  #     Label names [must be
  #     valid](https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels).
  #     Label values can be [templatized by using
  #     variables](https://cloud.google.com/monitoring/alerts/doc-variables).
  #     The only available variable names are the names of the labels in the
  #     PromQL result, including "__name__" and "value". "labels" may be empty.
  # @!attribute [rw] rule_group
  #   @return [::String]
  #     Optional. The rule group name of this alert in the corresponding
  #     Prometheus configuration file.
  #
  #     Some external tools may require this field to be populated correctly
  #     in order to refer to the original Prometheus configuration file.
  #     The rule group name and the alert name are necessary to update the
  #     relevant AlertPolicies in case the definition of the rule group changes
  #     in the future.
  #
  #     This field is optional. If this field is not empty, then it must
  #     contain a valid UTF-8 string.
  #     This field may not exceed 2048 Unicode characters in length.
  # @!attribute [rw] alert_rule
  #   @return [::String]
  #     Optional. The alerting rule name of this alert in the corresponding
  #     Prometheus configuration file.
  #
  #     Some external tools may require this field to be populated correctly
  #     in order to refer to the original Prometheus configuration file.
  #     The rule group name and the alert name are necessary to update the
  #     relevant AlertPolicies in case the definition of the rule group changes
  #     in the future.
  #
  #     This field is optional. If this field is not empty, then it must be a
  #     [valid Prometheus label
  #     name](https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels).
  #     This field may not exceed 2048 Unicode characters in length.
  class PrometheusQueryLanguageCondition
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # @!attribute [rw] key
    #   @return [::String]
    # @!attribute [rw] value
    #   @return [::String]
    class LabelsEntry
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition control that determines how metric-threshold conditions
  # are evaluated when data stops arriving.
  # This control doesn't affect metric-absence policies.
  module EvaluationMissingData
    # An unspecified evaluation missing data option.  Equivalent to
    # EVALUATION_MISSING_DATA_NO_OP.
    EVALUATION_MISSING_DATA_UNSPECIFIED = 0

    # If there is no data to evaluate the condition, then evaluate the
    # condition as false.
    EVALUATION_MISSING_DATA_INACTIVE = 1

    # If there is no data to evaluate the condition, then evaluate the
    # condition as true.
    EVALUATION_MISSING_DATA_ACTIVE = 2

    # Do not evaluate the condition to any value if there is no data.
    EVALUATION_MISSING_DATA_NO_OP = 3
  end
end

#name ⇒ ::String

Returns Required if the condition exists. The unique resource name for this condition. Its format is:

projects/[PROJECT_ID_OR_NUMBER]/alertPolicies/[POLICY_ID]/conditions/[CONDITION_ID]

[CONDITION_ID] is assigned by Cloud Monitoring when the condition is created as part of a new or updated alerting policy.

When calling the alertPolicies.create method, do not include the name field in the conditions of the requested alerting policy. Cloud Monitoring creates the condition identifiers and includes them in the new policy.

When calling the alertPolicies.update method to update a policy, including a condition name causes the existing condition to be updated. Conditions without names are added to the updated policy. Existing conditions are deleted if they are not updated.

Best practice is to preserve [CONDITION_ID] if you make only small changes, such as those to condition thresholds, durations, or trigger values. Otherwise, treat the change as a new condition and let the existing condition be deleted.

Returns:

• (::String) —

  Required if the condition exists. The unique resource name for this condition. Its format is:

  projects/[PROJECT_ID_OR_NUMBER]/alertPolicies/[POLICY_ID]/conditions/[CONDITION_ID]
  

  [CONDITION_ID] is assigned by Cloud Monitoring when the condition is created as part of a new or updated alerting policy.

  When calling the alertPolicies.create method, do not include the name field in the conditions of the requested alerting policy. Cloud Monitoring creates the condition identifiers and includes them in the new policy.

  When calling the alertPolicies.update method to update a policy, including a condition name causes the existing condition to be updated. Conditions without names are added to the updated policy. Existing conditions are deleted if they are not updated.

  Best practice is to preserve [CONDITION_ID] if you make only small changes, such as those to condition thresholds, durations, or trigger values. Otherwise, treat the change as a new condition and let the existing condition be deleted.

# File 'proto_docs/google/monitoring/v3/alert.rb', line 243

class Condition
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Specifies how many time series must fail a predicate to trigger a
  # condition. If not specified, then a `{count: 1}` trigger is used.
  # @!attribute [rw] count
  #   @return [::Integer]
  #     The absolute number of time series that must fail
  #     the predicate for the condition to be triggered.
  # @!attribute [rw] percent
  #   @return [::Float]
  #     The percentage of time series that must fail the
  #     predicate for the condition to be triggered.
  class Trigger
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that compares a collection of time series
  # against a threshold.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A
  #     [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies which time series should be compared with the threshold.
  #
  #     The filter is similar to the one that is specified in the
  #     [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list)
  #     (that call is useful to verify the time series that will be retrieved /
  #     processed). The filter must specify the metric type and the resource
  #     type. Optionally, it can specify resource labels and metric labels.
  #     This field must not exceed 2048 Unicode characters in length.
  # @!attribute [rw] aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources). Multiple aggregations
  #     are applied in the order specified.
  #
  #     This field is similar to the one in the [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list).
  #     It is advisable to use the `ListTimeSeries` method when debugging this
  #     field.
  # @!attribute [rw] denominator_filter
  #   @return [::String]
  #     A [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies a time series that should be used as the denominator of a
  #     ratio that will be compared with the threshold. If a
  #     `denominator_filter` is specified, the time series specified by the
  #     `filter` field will be used as the numerator.
  #
  #     The filter must specify the metric type and optionally may contain
  #     restrictions on resource type, resource labels, and metric labels.
  #     This field may not exceed 2048 Unicode characters in length.
  # @!attribute [rw] denominator_aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series
  #     selected by `denominatorFilter` as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources).
  #
  #     When computing ratios, the `aggregations` and
  #     `denominator_aggregations` fields must use the same alignment period
  #     and produce time series that have the same periodicity and labels.
  # @!attribute [rw] forecast_options
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::MetricThreshold::ForecastOptions]
  #     When this field is present, the `MetricThreshold` condition forecasts
  #     whether the time series is predicted to violate the threshold within
  #     the `forecast_horizon`. When this field is not set, the
  #     `MetricThreshold` tests the current value of the timeseries against the
  #     threshold.
  # @!attribute [rw] comparison
  #   @return [::Google::Cloud::Monitoring::V3::ComparisonType]
  #     The comparison to apply between the time series (indicated by `filter`
  #     and `aggregation`) and the threshold (indicated by `threshold_value`).
  #     The comparison is applied on each time series, with the time series
  #     on the left-hand side and the threshold on the right-hand side.
  #
  #     Only `COMPARISON_LT` and `COMPARISON_GT` are supported currently.
  # @!attribute [rw] threshold_value
  #   @return [::Float]
  #     A value against which to compare the time series.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must violate the
  #     threshold to be considered failing. Currently, only values
  #     that are a multiple of a minute--e.g., 0, 60, 120, or 300
  #     seconds--are supported. If an invalid value is given, an
  #     error will be returned. When choosing a duration, it is useful to
  #     keep in mind the frequency of the underlying time series data
  #     (which may also be affected by any alignments specified in the
  #     `aggregations` field); a good duration is long enough so that a single
  #     outlier does not generate spurious alerts, but short enough that
  #     unhealthy states are detected and alerted on quickly.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`,
  #     or by the ratio, if `denominator_filter` and `denominator_aggregations`
  #     are specified.
  # @!attribute [rw] evaluation_missing_data
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::EvaluationMissingData]
  #     A condition control that determines how metric-threshold conditions
  #     are evaluated when data stops arriving. To use this control, the value
  #     of the `duration` field must be greater than or equal to 60 seconds.
  class MetricThreshold
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Options used when forecasting the time series and testing
    # the predicted value against the threshold.
    # @!attribute [rw] forecast_horizon
    #   @return [::Google::Protobuf::Duration]
    #     Required. The length of time into the future to forecast whether a
    #     time series will violate the threshold. If the predicted value is
    #     found to violate the threshold, and the violation is observed in all
    #     forecasts made for the configured `duration`, then the time series is
    #     considered to be failing.
    #     The forecast horizon can range from 1 hour to 60 hours.
    class ForecastOptions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition type that checks that monitored resources
  # are reporting data. The configuration defines a metric and
  # a set of monitored resources. The predicate is considered in violation
  # when a time series for the specified metric of a monitored
  # resource does not include any data in the specified `duration`.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A
  #     [filter](https://cloud.google.com/monitoring/api/v3/filters) that
  #     identifies which time series should be compared with the threshold.
  #
  #     The filter is similar to the one that is specified in the
  #     [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list)
  #     (that call is useful to verify the time series that will be retrieved /
  #     processed). The filter must specify the metric type and the resource
  #     type. Optionally, it can specify resource labels and metric labels.
  #     This field must not exceed 2048 Unicode characters in length.
  # @!attribute [rw] aggregations
  #   @return [::Array<::Google::Cloud::Monitoring::V3::Aggregation>]
  #     Specifies the alignment of data points in individual time series as
  #     well as how to combine the retrieved time series together (such as
  #     when aggregating multiple streams on each resource to a single
  #     stream for each resource or when aggregating streams across all
  #     members of a group of resources). Multiple aggregations
  #     are applied in the order specified.
  #
  #     This field is similar to the one in the [`ListTimeSeries`
  #     request](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list).
  #     It is advisable to use the `ListTimeSeries` method when debugging this
  #     field.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must fail to report new
  #     data to be considered failing. The minimum value of this field
  #     is 120 seconds. Larger values that are a multiple of a
  #     minute--for example, 240 or 300 seconds--are supported.
  #     If an invalid value is given, an
  #     error will be returned. The `Duration.nanos` field is
  #     ignored.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`.
  class MetricAbsence
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that checks whether a log message in the [scoping
  # project](https://cloud.google.com/monitoring/api/v3#project_name)
  # satisfies the given filter. Logs from other projects in the metrics
  # scope are not evaluated.
  # @!attribute [rw] filter
  #   @return [::String]
  #     Required. A logs-based filter. See [Advanced Logs
  #     Queries](https://cloud.google.com/logging/docs/view/advanced-queries)
  #     for how this filter should be constructed.
  # @!attribute [rw] label_extractors
  #   @return [::Google::Protobuf::Map{::String => ::String}]
  #     Optional. A map from a label key to an extractor expression, which is
  #     used to extract the value for this label key. Each entry in this map is
  #     a specification for how data should be extracted from log entries that
  #     match `filter`. Each combination of extracted values is treated as a
  #     separate rule for the purposes of triggering notifications. Label keys
  #     and corresponding values can be used in notifications generated by this
  #     condition.
  #
  #     Please see [the documentation on logs-based metric
  #     `valueExtractor`s](https://cloud.google.com/logging/docs/reference/v2/rest/v2/projects.metrics#LogMetric.FIELDS.value_extractor)
  #     for syntax and examples.
  class LogMatch
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # @!attribute [rw] key
    #   @return [::String]
    # @!attribute [rw] value
    #   @return [::String]
    class LabelExtractorsEntry
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition type that allows alert policies to be defined using
  # [Monitoring Query Language](https://cloud.google.com/monitoring/mql).
  # @!attribute [rw] query
  #   @return [::String]
  #     [Monitoring Query Language](https://cloud.google.com/monitoring/mql)
  #     query that outputs a boolean stream.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     The amount of time that a time series must violate the
  #     threshold to be considered failing. Currently, only values
  #     that are a multiple of a minute--e.g., 0, 60, 120, or 300
  #     seconds--are supported. If an invalid value is given, an
  #     error will be returned. When choosing a duration, it is useful to
  #     keep in mind the frequency of the underlying time series data
  #     (which may also be affected by any alignments specified in the
  #     `aggregations` field); a good duration is long enough so that a single
  #     outlier does not generate spurious alerts, but short enough that
  #     unhealthy states are detected and alerted on quickly.
  # @!attribute [rw] trigger
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::Trigger]
  #     The number/percent of time series for which the comparison must hold
  #     in order for the condition to trigger. If unspecified, then the
  #     condition will trigger if the comparison is true for any of the
  #     time series that have been identified by `filter` and `aggregations`,
  #     or by the ratio, if `denominator_filter` and `denominator_aggregations`
  #     are specified.
  # @!attribute [rw] evaluation_missing_data
  #   @return [::Google::Cloud::Monitoring::V3::AlertPolicy::Condition::EvaluationMissingData]
  #     A condition control that determines how metric-threshold conditions
  #     are evaluated when data stops arriving.
  class MonitoringQueryLanguageCondition
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A condition type that allows alert policies to be defined using
  # [Prometheus Query Language
  # (PromQL)](https://prometheus.io/docs/prometheus/latest/querying/basics/).
  #
  # The PrometheusQueryLanguageCondition message contains information
  # from a Prometheus alerting rule and its associated rule group.
  #
  # A Prometheus alerting rule is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/alerting_rules/).
  # The semantics of a Prometheus alerting rule is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/#rule).
  #
  # A Prometheus rule group is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/).
  # The semantics of a Prometheus rule group is described
  # [here](https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/#rule_group).
  #
  # Because Cloud Alerting has no representation of a Prometheus rule
  # group resource, we must embed the information of the parent rule
  # group inside each of the conditions that refer to it. We must also
  # update the contents of all Prometheus alerts in case the information
  # of their rule group changes.
  #
  # The PrometheusQueryLanguageCondition protocol buffer combines the
  # information of the corresponding rule group and alerting rule.
  # The structure of the PrometheusQueryLanguageCondition protocol buffer
  # does NOT mimic the structure of the Prometheus rule group and alerting
  # rule YAML declarations. The PrometheusQueryLanguageCondition protocol
  # buffer may change in the future to support future rule group and/or
  # alerting rule features. There are no new such features at the present
  # time (2023-06-26).
  # @!attribute [rw] query
  #   @return [::String]
  #     Required. The PromQL expression to evaluate. Every evaluation cycle
  #     this expression is evaluated at the current time, and all resultant
  #     time series become pending/firing alerts. This field must not be empty.
  # @!attribute [rw] duration
  #   @return [::Google::Protobuf::Duration]
  #     Optional. Alerts are considered firing once their PromQL expression was
  #     evaluated to be "true" for this long.
  #     Alerts whose PromQL expression was not evaluated to be "true" for
  #     long enough are considered pending.
  #     Must be a non-negative duration or missing.
  #     This field is optional. Its default value is zero.
  # @!attribute [rw] evaluation_interval
  #   @return [::Google::Protobuf::Duration]
  #     Optional. How often this rule should be evaluated.
  #     Must be a positive multiple of 30 seconds or missing.
  #     This field is optional. Its default value is 30 seconds.
  #     If this PrometheusQueryLanguageCondition was generated from a
  #     Prometheus alerting rule, then this value should be taken from the
  #     enclosing rule group.
  # @!attribute [rw] labels
  #   @return [::Google::Protobuf::Map{::String => ::String}]
  #     Optional. Labels to add to or overwrite in the PromQL query result.
  #     Label names [must be
  #     valid](https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels).
  #     Label values can be [templatized by using
  #     variables](https://cloud.google.com/monitoring/alerts/doc-variables).
  #     The only available variable names are the names of the labels in the
  #     PromQL result, including "__name__" and "value". "labels" may be empty.
  # @!attribute [rw] rule_group
  #   @return [::String]
  #     Optional. The rule group name of this alert in the corresponding
  #     Prometheus configuration file.
  #
  #     Some external tools may require this field to be populated correctly
  #     in order to refer to the original Prometheus configuration file.
  #     The rule group name and the alert name are necessary to update the
  #     relevant AlertPolicies in case the definition of the rule group changes
  #     in the future.
  #
  #     This field is optional. If this field is not empty, then it must
  #     contain a valid UTF-8 string.
  #     This field may not exceed 2048 Unicode characters in length.
  # @!attribute [rw] alert_rule
  #   @return [::String]
  #     Optional. The alerting rule name of this alert in the corresponding
  #     Prometheus configuration file.
  #
  #     Some external tools may require this field to be populated correctly
  #     in order to refer to the original Prometheus configuration file.
  #     The rule group name and the alert name are necessary to update the
  #     relevant AlertPolicies in case the definition of the rule group changes
  #     in the future.
  #
  #     This field is optional. If this field is not empty, then it must be a
  #     [valid Prometheus label
  #     name](https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels).
  #     This field may not exceed 2048 Unicode characters in length.
  class PrometheusQueryLanguageCondition
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # @!attribute [rw] key
    #   @return [::String]
    # @!attribute [rw] value
    #   @return [::String]
    class LabelsEntry
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end

  # A condition control that determines how metric-threshold conditions
  # are evaluated when data stops arriving.
  # This control doesn't affect metric-absence policies.
  module EvaluationMissingData
    # An unspecified evaluation missing data option.  Equivalent to
    # EVALUATION_MISSING_DATA_NO_OP.
    EVALUATION_MISSING_DATA_UNSPECIFIED = 0

    # If there is no data to evaluate the condition, then evaluate the
    # condition as false.
    EVALUATION_MISSING_DATA_INACTIVE = 1

    # If there is no data to evaluate the condition, then evaluate the
    # condition as true.
    EVALUATION_MISSING_DATA_ACTIVE = 2

    # Do not evaluate the condition to any value if there is no data.
    EVALUATION_MISSING_DATA_NO_OP = 3
  end
end