Module: NewRelic::Agent::Instrumentation::ActiveRecord

Defined in:
lib/new_relic/agent/instrumentation/active_record.rb

Constant Summary collapse

EXPLAINER = 
lambda do |statement|
  connection = NewRelic::Agent::Database.get_connection(statement.config) do
    ::ActiveRecord::Base.send("#{statement.config[:adapter]}_connection",
      statement.config)
  end
  # the following line needs else branch coverage
  if connection && connection.respond_to?(:execute) # rubocop:disable Style/SafeNavigation
    return connection.execute("EXPLAIN #{statement.sql}")
  end
end

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(instrumented_class) ⇒ Object 



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# File 'lib/new_relic/agent/instrumentation/active_record.rb', line 37

def self.included(instrumented_class)
  instrumented_class.class_eval do
    unless instrumented_class.method_defined?(:log_without_newrelic_instrumentation)
      alias_method(:log_without_newrelic_instrumentation, :log)
      alias_method(:log, :log_with_newrelic_instrumentation)
      protected(:log)
    end
  end
end

.insert_instrumentation ⇒ Object 



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# File 'lib/new_relic/agent/instrumentation/active_record.rb', line 22

def self.insert_instrumentation
  if defined?(::ActiveRecord::VERSION::MAJOR) && ::ActiveRecord::VERSION::MAJOR.to_i >= 3
    if ::NewRelic::Agent.config[:prepend_active_record_instrumentation]
      ::ActiveRecord::Base.prepend(::NewRelic::Agent::Instrumentation::ActiveRecordPrepend::BaseExtensions)
      ::ActiveRecord::Relation.prepend(::NewRelic::Agent::Instrumentation::ActiveRecordPrepend::RelationExtensions)
    else
      ::NewRelic::Agent::Instrumentation::ActiveRecordHelper.instrument_additional_methods
    end
  end

  ::ActiveRecord::ConnectionAdapters::AbstractAdapter.module_eval do
    include ::NewRelic::Agent::Instrumentation::ActiveRecord
  end
end

Instance Method Details

#log_with_newrelic_instrumentation(*args, **kwargs, &block) ⇒ Object 



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# File 'lib/new_relic/agent/instrumentation/active_record.rb', line 48

def log_with_newrelic_instrumentation(*args, &block)
  state = NewRelic::Agent::Tracer.state

  if !state.is_execution_traced?
    return log_without_newrelic_instrumentation(*args, &block)
  end

  sql, name, _ = args

  product, operation, collection = ActiveRecordHelper.product_operation_collection_for(
    NewRelic::Helper.correctly_encoded(name),
    NewRelic::Helper.correctly_encoded(sql),
    @config && @config[:adapter]
  )

  host = nil
  port_path_or_id = nil
  database = nil

  if ActiveRecordHelper::InstanceIdentification.supported_adapter?(@config)
    host = ActiveRecordHelper::InstanceIdentification.host(@config)
    port_path_or_id = ActiveRecordHelper::InstanceIdentification.port_path_or_id(@config)
    database = @config && @config[:database]
  end

  segment = NewRelic::Agent::Tracer.start_datastore_segment(
    product: product,
    operation: operation,
    collection: collection,
    host: host,
    port_path_or_id: port_path_or_id,
    database_name: database
  )
  segment._notice_sql(sql, @config, EXPLAINER)

  begin
    NewRelic::Agent::Tracer.capture_segment_error(segment) do
      log_without_newrelic_instrumentation(*args, &block)
    end
  ensure
    ::NewRelic::Agent::Transaction::Segment.finish(segment)
  end
end