46 lines
1.6 KiB
Ruby
46 lines
1.6 KiB
Ruby
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require 'forwardable'
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require 'opentracing/version'
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require 'opentracing/span_context'
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require 'opentracing/span'
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require 'opentracing/reference'
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require 'opentracing/tracer'
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require 'opentracing/scope'
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require 'opentracing/scope_manager'
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#:nodoc:
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module OpenTracing
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# Text format for Tracer#inject and Tracer#extract.
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#
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# The carrier for FORMAT_TEXT_MAP should be a Hash with string values.
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FORMAT_TEXT_MAP = 1
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# Binary format for #inject and #extract
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#
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# The carrier for FORMAT_BINARY should be a string, treated as a raw sequence
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# of bytes.
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FORMAT_BINARY = 2
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# Due to Rack's popularity within the Ruby community, OpenTracing-Ruby
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# provides a Rack-specific format for injection into and extraction from HTTP
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# headers specifically, though there are some strings attached.
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#
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# The carrier for FORMAT_RACK should be `env` or equivalent. It behaves like
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# FORMAT_TEXT_MAP, but with all keys transformed per Rack's treatment of HTTP
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# headers. Keep in mind that Rack automatically uppercases all headers and
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# replaces dashes with underscores. This means that if you use dashes and
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# underscores and case-sensitive baggage keys, they may collide or become
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# unrecognizable.
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FORMAT_RACK = 3
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class << self
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extend Forwardable
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# Global tracer to be used when OpenTracing.start_span, inject or extract is called
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attr_accessor :global_tracer
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def_delegators :global_tracer, :scope_manager, :start_active_span,
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:start_span, :inject, :extract, :active_span
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end
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end
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# Default to the no-op tracer
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OpenTracing.global_tracer = OpenTracing::Tracer.new
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