Class: RubyZipkin::RackHandler

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby-zipkin.rb

Instance Method Summary collapse

Constructor Details

#initialize(app, service_name = 'flexd', scribe_server = "204.77.168.48", scribe_port = 9410, scribe_max_buffer = 10) ⇒ RackHandler

Returns a new instance of RackHandler.



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# File 'lib/ruby-zipkin.rb', line 13

def initialize(app, service_name ='flexd', scribe_server = "204.77.168.48", scribe_port = 9410, scribe_max_buffer = 10 )
  @app = app
  @lock = Mutex.new
  @service_name = service_name
  @scribe_port = scribe_port
  @sample_rate = 0.1
  @scribe = Scribe.new("#{scribe_server}:#{scribe_port}")
  ::Trace.tracer = ::Trace::ZipkinTracer.new(Scriber.new(@scribe), scribe_max_buffer)
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/ruby-zipkin.rb', line 23

def call(env)
  ::Trace.default_endpoint = ::Trace.default_endpoint.with_service_name(@service_name).with_port(@service_port)
  ::Trace.sample_rate = 0.1

  tracing_filter(get_or_create_trace_id(env), env)
  env[ZipkinTraceHeader::PARENT_SPAN_ID] = @spanid
  env[ZipkinTraceHeader::TRACE_ID] = @tid
  @status, @headers, @response = @app.call(env)

  [@status, @headers, @response]
end