Class: OpenCensus::Trace::Formatters::TraceContext
- Inherits:
-
Object
- Object
- OpenCensus::Trace::Formatters::TraceContext
- Defined in:
- lib/opencensus/trace/formatters/trace_context.rb
Overview
This formatter serializes and deserializes span context according to the TraceContext specification. See documentation.
Instance Method Summary collapse
-
#deserialize(header) ⇒ TraceContextData?
Deserialize a trace context header into a TraceContext object.
-
#header_name ⇒ String
Returns the name of the header used for context propagation.
-
#rack_header_name ⇒ String
Returns the name of the rack_environment header to use when parsing context from an incoming request.
-
#serialize(trace_context) ⇒ String
Serialize a TraceContextData object.
Instance Method Details
#deserialize(header) ⇒ TraceContextData?
Deserialize a trace context header into a TraceContext object.
80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 |
# File 'lib/opencensus/trace/formatters/trace_context.rb', line 80 def deserialize header match = VERSION_PATTERN.match(header) if match version = match[1].to_i(16) version_format = match[2] case version when 0 parse_trace_context_header_version_0 version_format else nil end else nil end end |
#header_name ⇒ String
Returns the name of the header used for context propagation.
60 61 62 |
# File 'lib/opencensus/trace/formatters/trace_context.rb', line 60 def header_name HEADER_NAME end |
#rack_header_name ⇒ String
Returns the name of the rack_environment header to use when parsing context from an incoming request.
70 71 72 |
# File 'lib/opencensus/trace/formatters/trace_context.rb', line 70 def rack_header_name RACK_HEADER_NAME end |
#serialize(trace_context) ⇒ String
Serialize a TraceContextData object.
102 103 104 105 106 107 108 109 110 |
# File 'lib/opencensus/trace/formatters/trace_context.rb', line 102 def serialize trace_context format( "%02<version>d-%<trace_id>s-%<span_id>s-%02<trace_options>d", version: 0, # version 0, trace_id: trace_context.trace_id, span_id: trace_context.span_id, trace_options: trace_context. ) end |