Class: Datadog::Transport::IO::Client

Inherits:
Object
  • Object
show all
Includes:
Traces::Client, Statistics
Defined in:
lib/ddtrace/transport/io/client.rb

Overview

Encodes and writes tracer data to IO

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Traces::Client

#send_traces

Methods included from Statistics

#metrics_for_exception, #metrics_for_response, #stats, #update_stats_from_exception!, #update_stats_from_response!

Constructor Details

#initialize(out, encoder, options = {}) ⇒ Client

Returns a new instance of Client.



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# File 'lib/ddtrace/transport/io/client.rb', line 15

def initialize(out, encoder, options = {})
  @out = out
  @encoder = encoder

  @request_block = options.fetch(:request, method(:send_default_request))
  @encode_block = options.fetch(:encode, method(:encode_data))
  @write_block = options.fetch(:write, method(:write_data))
  @response_block = options.fetch(:response, method(:build_response))
end

Instance Attribute Details

#encoder ⇒ Object (readonly)

Returns the value of attribute encoder.



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# File 'lib/ddtrace/transport/io/client.rb', line 11

def encoder
  @encoder
end

#out ⇒ Object (readonly)

Returns the value of attribute out.



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# File 'lib/ddtrace/transport/io/client.rb', line 11

def out
  @out
end

Instance Method Details

#build_response(_request, _data, result) ⇒ Object 



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# File 'lib/ddtrace/transport/io/client.rb', line 66

def build_response(_request, _data, result)
  IO::Response.new(result)
end

#encode_data(encoder, request) ⇒ Object 



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# File 'lib/ddtrace/transport/io/client.rb', line 58

def encode_data(encoder, request)
  request.parcel.encode_with(encoder)
end

#send_request(request) ⇒ Object 



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# File 'lib/ddtrace/transport/io/client.rb', line 25

def send_request(request)
  # Write data to IO
  # If block is given, allow it to handle writing
  # Otherwise do a standard encode/write/response.
  response = if block_given?
               yield(out, request)
             else
               @request_block.call(out, request)
             end

  # Update statistics
  update_stats_from_response!(response)

  # Return response
  response
rescue StandardError => e
  message =
    "Internal error during IO transport request. Cause: #{e.class.name} #{e.message} " \
    "Location: #{Array(e.backtrace).first}"

  # Log error
  if stats.consecutive_errors > 0
    Datadog.logger.debug(message)
  else
    Datadog.logger.error(message)
  end

  # Update statistics
  update_stats_from_exception!(e)

  InternalErrorResponse.new(e)
end

#write_data(out, data) ⇒ Object 



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# File 'lib/ddtrace/transport/io/client.rb', line 62

def write_data(out, data)
  out.puts(data)
end