Class: Google::Cloud::Eventarc::V1::Pipeline::Mediation

Inherits:
Object
  • Object
show all
Extended by:
Protobuf::MessageExts::ClassMethods
Includes:
Protobuf::MessageExts
Defined in:
proto_docs/google/cloud/eventarc/v1/pipeline.rb

Overview

Mediation defines different ways to modify the Pipeline.

Defined Under Namespace

Classes: Transformation

Instance Attribute Summary collapse

Instance Attribute Details

#transformation ⇒ ::Google::Cloud::Eventarc::V1::Pipeline::Mediation::Transformation

Returns Optional. How the Pipeline is to transform messages.

Returns:



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# File 'proto_docs/google/cloud/eventarc/v1/pipeline.rb', line 446

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

  # Transformation defines the way to transform an incoming message.
  # @!attribute [rw] transformation_template
  #   @return [::String]
  #     Optional. The CEL expression template to apply to transform messages.
  #     The following CEL extension functions are provided for
  #     use in this CEL expression:
  #     - merge:
  #       map1.merge(map2) -> map3
  #         - Merges the passed CEL map with the existing CEL map the
  #         function is applied to.
  #         - If the same key exists in both maps, if the key's value is type
  #         map both maps are merged else the value from the passed map is
  #         used.
  #     - denormalize:
  #       map.denormalize() -> map
  #         - Denormalizes a CEL map such that every value of type map or key
  #         in the map is expanded to return a single level map.
  #         - The resulting keys are "." separated indices of the map keys.
  #         - For example:
  #           {
  #             "a": 1,
  #             "b": {
  #               "c": 2,
  #               "d": 3
  #             }
  #             "e": [4, 5]
  #           }
  #           .denormalize()
  #           -> {
  #             "a": 1,
  #             "b.c": 2,
  #             "b.d": 3,
  #             "e.0": 4,
  #             "e.1": 5
  #           }
  #     - setField:
  #       map.setField(key, value) -> message
  #         - Sets the field of the message with the given key to the
  #         given value.
  #         - If the field is not present it will be added.
  #         - If the field is present it will be overwritten.
  #         - The key can be a dot separated path to set a field in a nested
  #         message.
  #         - Key must be of type string.
  #         - Value may be any valid type.
  #     - removeFields:
  #       map.removeFields([key1, key2, ...]) -> message
  #         - Removes the fields of the map with the given keys.
  #         - The keys can be a dot separated path to remove a field in a
  #         nested message.
  #         - If a key is not found it will be ignored.
  #         - Keys must be of type string.
  #     - toMap:
  #       [map1, map2, ...].toMap() -> map
  #         - Converts a CEL list of CEL maps to a single CEL map
  #     - toDestinationPayloadFormat():
  #       message.data.toDestinationPayloadFormat() -> string or bytes
  #         - Converts the message data to the destination payload format
  #         specified in Pipeline.Destination.output_payload_format
  #         - This function is meant to be applied to the message.data field.
  #         - If the destination payload format is not set, the function will
  #         return the message data unchanged.
  #     - toCloudEventJsonWithPayloadFormat:
  #       message.toCloudEventJsonWithPayloadFormat() -> map
  #         - Converts a message to the corresponding structure of JSON
  #         format for CloudEvents
  #         - This function applies toDestinationPayloadFormat() to the
  #         message data. It also sets the corresponding datacontenttype of
  #         the CloudEvent, as indicated by
  #         Pipeline.Destination.output_payload_format. If no
  #         output_payload_format is set it will use the existing
  #         datacontenttype on the CloudEvent if present, else leave
  #         datacontenttype absent.
  #         - This function expects that the content of the message will
  #         adhere to the standard CloudEvent format. If it doesn’t then this
  #         function will fail.
  #         - The result is a CEL map that corresponds to the JSON
  #         representation of the CloudEvent. To convert that data to a JSON
  #         string it can be chained with the toJsonString function.
  class Transformation
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end
end