Class: Datadog::Transport::Traces::Transport

Inherits:
Object
  • Object
show all
Defined in:
lib/ddtrace/transport/traces.rb

Overview

Sends traces based on transport API configuration.

This class initializes the HTTP client, breaks down large batches of traces into smaller chunks and handles API version downgrade handshake.

Defined Under Namespace

Classes: NoDowngradeAvailableError, UnknownApiVersionError

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(apis, default_api) ⇒ Transport

Returns a new instance of Transport.



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# File 'lib/ddtrace/transport/traces.rb', line 117

def initialize(apis, default_api)
  @apis = apis
  @default_api = default_api

  change_api!(default_api)
end

Instance Attribute Details

#apis ⇒ Object (readonly)

Returns the value of attribute apis.



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# File 'lib/ddtrace/transport/traces.rb', line 115

def apis
  @apis
end

#client ⇒ Object (readonly)

Returns the value of attribute client.



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# File 'lib/ddtrace/transport/traces.rb', line 115

def client
  @client
end

#current_api_id ⇒ Object (readonly)

Returns the value of attribute current_api_id.



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# File 'lib/ddtrace/transport/traces.rb', line 115

def current_api_id
  @current_api_id
end

#default_api ⇒ Object (readonly)

Returns the value of attribute default_api.



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# File 'lib/ddtrace/transport/traces.rb', line 115

def default_api
  @default_api
end

Instance Method Details

#current_api ⇒ Object 



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# File 'lib/ddtrace/transport/traces.rb', line 162

def current_api
  apis[@current_api_id]
end

#send_traces(traces) ⇒ Object 



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# File 'lib/ddtrace/transport/traces.rb', line 124

def send_traces(traces)
  encoder = current_api.encoder
  chunker = Datadog::Transport::Traces::Chunker.new(encoder)

  responses = chunker.encode_in_chunks(traces.lazy).map do |encoded_traces, trace_count|
    request = Request.new(EncodedParcel.new(encoded_traces, trace_count))

    client.send_traces_payload(request).tap do |response|
      if downgrade?(response)
        downgrade!
        return send_traces(traces)
      end
    end
  end

  # Force resolution of lazy enumerator.
  #
  # The "correct" method to call here would be `#force`,
  # as this method was created to force the eager loading
  # of a lazy enumerator.
  #
  # Unfortunately, JRuby < 9.2.9.0 erroneously eagerly loads
  # the lazy Enumerator during intermediate steps.
  # This forces us to use `#to_a`, as this method works for both
  # lazy and regular Enumerators.
  # Using `#to_a` can mask the fact that we expect a lazy
  # Enumerator.
  responses = responses.to_a

  Datadog.health_metrics.transport_chunked(responses.size)

  responses
end

#stats ⇒ Object 



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# File 'lib/ddtrace/transport/traces.rb', line 158

def stats
  @client.stats
end