Class: OpenTelemetry::Exporter::OTLP::Exporter

Inherits:
Object
  • Object
show all
Defined in:
lib/opentelemetry/exporter/otlp/exporter.rb

Overview

An OpenTelemetry trace exporter that sends spans over HTTP as Protobuf encoded OTLP ExportTraceServiceRequests.

Instance Method Summary collapse

Constructor Details

#initialize(endpoint: config_opt('OTEL_EXPORTER_OTLP_SPAN_ENDPOINT', 'OTEL_EXPORTER_OTLP_ENDPOINT', default: 'localhost:55681/v1/trace'), insecure: config_opt('OTEL_EXPORTER_OTLP_SPAN_INSECURE', 'OTEL_EXPORTER_OTLP_INSECURE', default: false), certificate_file: config_opt('OTEL_EXPORTER_OTLP_SPAN_CERTIFICATE', 'OTEL_EXPORTER_OTLP_CERTIFICATE'), headers: config_opt('OTEL_EXPORTER_OTLP_SPAN_HEADERS', 'OTEL_EXPORTER_OTLP_HEADERS'), compression: config_opt('OTEL_EXPORTER_OTLP_SPAN_COMPRESSION', 'OTEL_EXPORTER_OTLP_COMPRESSION'), timeout: config_opt('OTEL_EXPORTER_OTLP_SPAN_TIMEOUT', 'OTEL_EXPORTER_OTLP_TIMEOUT', default: 10)) ⇒ Exporter

rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity

Raises:

  • (ArgumentError) 


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# File 'lib/opentelemetry/exporter/otlp/exporter.rb', line 33

def initialize(endpoint: config_opt('OTEL_EXPORTER_OTLP_SPAN_ENDPOINT', 'OTEL_EXPORTER_OTLP_ENDPOINT', default: 'localhost:55681/v1/trace'), # rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity
               insecure: config_opt('OTEL_EXPORTER_OTLP_SPAN_INSECURE', 'OTEL_EXPORTER_OTLP_INSECURE', default: false),
               certificate_file: config_opt('OTEL_EXPORTER_OTLP_SPAN_CERTIFICATE', 'OTEL_EXPORTER_OTLP_CERTIFICATE'),
               headers: config_opt('OTEL_EXPORTER_OTLP_SPAN_HEADERS', 'OTEL_EXPORTER_OTLP_HEADERS'), # TODO: what format is expected here?
               compression: config_opt('OTEL_EXPORTER_OTLP_SPAN_COMPRESSION', 'OTEL_EXPORTER_OTLP_COMPRESSION'),
               timeout: config_opt('OTEL_EXPORTER_OTLP_SPAN_TIMEOUT', 'OTEL_EXPORTER_OTLP_TIMEOUT', default: 10))
  raise ArgumentError, "invalid url for OTLP::Exporter #{endpoint}" if invalid_url?("http://#{endpoint}")
  raise ArgumentError, "unsupported compression key #{compression}" unless compression.nil? || compression == 'gzip'
  raise ArgumentError, 'headers must be comma-separated k:v pairs or a Hash' unless valid_headers?(headers)

  uri = URI "http://#{endpoint}"
  @http = Net::HTTP.new(uri.host, uri.port)
  @http.use_ssl = insecure.to_s.downcase == 'false'
  @http.ca_file = certificate_file unless certificate_file.nil?
  @http.keep_alive_timeout = KEEP_ALIVE_TIMEOUT
  @http.open_timeout = OPEN_TIMEOUT
  @http.read_timeout = READ_TIMEOUT

  @path = uri.path
  @headers = case headers
             when String then CSV.parse(headers, col_sep: ':', row_sep: ',').to_h
             when Hash then headers
             end
  @timeout = timeout.to_f # TODO: use this as a default timeout when we implement timeouts in https://github.com/open-telemetry/opentelemetry-ruby/pull/341
  @compression = compression

  @shutdown = false
end

Instance Method Details

#export(span_data) ⇒ Integer

Called to export sampled SDK::Trace::SpanData structs.

Parameters:

  • span_data (Enumerable<OpenTelemetry::SDK::Trace::SpanData>) —

    the list of recorded SDK::Trace::SpanData structs to be exported.

Returns:

  • (Integer) —

    the result of the export.



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# File 'lib/opentelemetry/exporter/otlp/exporter.rb', line 68

def export(span_data)
  return FAILURE if @shutdown

  send_bytes(encode(span_data))
end

#shutdown ⇒ Object

Called when SDK::Trace::Tracer#shutdown is called, if this exporter is registered to a SDK::Trace::Tracer object.



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# File 'lib/opentelemetry/exporter/otlp/exporter.rb', line 77

def shutdown
  @shutdown = true
  @http.finish if @http.started?
end