Class: ZipkinTracer::ZipkinEnv

Inherits:
Object
  • Object
show all
Defined in:
lib/zipkin-tracer/rack/zipkin_env.rb

Overview

This class manages the Zipkin related information in the Rack environment. It is only used by the rack middleware.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(env, config) ⇒ ZipkinEnv

Returns a new instance of ZipkinEnv.



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# File 'lib/zipkin-tracer/rack/zipkin_env.rb', line 7

def initialize(env, config)
  @env    = env
  @config = config
end

Instance Attribute Details

#env ⇒ Object (readonly)

Returns the value of attribute env.



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# File 'lib/zipkin-tracer/rack/zipkin_env.rb', line 5

def env
  @env
end

Instance Method Details

#called_with_zipkin_b3_single_header? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/zipkin-tracer/rack/zipkin_env.rb', line 19

def called_with_zipkin_b3_single_header?
  @called_with_zipkin_b3_single_header ||= @env.key?(B3_SINGLE_HEADER)
end

#called_with_zipkin_headers? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/zipkin-tracer/rack/zipkin_env.rb', line 23

def called_with_zipkin_headers?
  @called_with_zipkin_headers ||= B3_REQUIRED_HEADERS.all? { |key| @env.key?(key) }
end

#trace_id(default_flags = Trace::Flags::EMPTY) ⇒ Object 



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# File 'lib/zipkin-tracer/rack/zipkin_env.rb', line 12

def trace_id(default_flags = Trace::Flags::EMPTY)
  trace_id, span_id, parent_span_id, sampled, flags, shared = retrieve_or_generate_ids
  sampled = sampled_header_value(sampled)
  flags = (flags || default_flags).to_i
  Trace::TraceId.new(trace_id, parent_span_id, span_id, sampled, flags, shared)
end