Class: LogBrew::FaradayTracingMiddleware

Inherits:
Faraday::Middleware
  • Object
show all
Defined in:
lib/logbrew/faraday_tracing.rb

Instance Method Summary collapse

Constructor Details

#initialize(app, client:, on_capture_error: nil) ⇒ FaradayTracingMiddleware

Returns a new instance of FaradayTracingMiddleware.



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# File 'lib/logbrew/faraday_tracing.rb', line 8

def initialize(app, client:, on_capture_error: nil)
  super(app)
  @client = client
  @on_capture_error = on_capture_error
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/logbrew/faraday_tracing.rb', line 14

def call(env)
  prepared = HttpClientTracing.prepare(
    client: @client,
    source: "faraday",
    on_capture_error: @on_capture_error
  ) do
    url = env.url
    [env.method, url && url.host, HttpClientTracing::FaradayHeaderSnapshot.new(env.request_headers)]
  end
  return @app.call(env) unless prepared

  operation, header = prepared
  begin
    header.inject(operation.traceparent)
  rescue StandardError => error
    operation.capture_error(error)
    HttpClientTracing.reset_header(header, operation)
    return @app.call(env)
  end

  response = nil
  begin
    response = operation.around { @app.call(env) }
  rescue StandardError => error
    operation.finish(error: error)
    raise
  ensure
    HttpClientTracing.reset_header(header, operation)
  end

  begin
    response.on_complete do |completed|
      operation.finish(status_code: HttpClientTracing.read_status(completed, :status, operation))
    end
  rescue StandardError => error
    operation.capture_error(error)
    operation.finish(status_code: HttpClientTracing.read_status(response, :status, operation))
  end
  response
end