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# File 'lib/jaeger/client/extractors.rb', line 44
def self.(carrier)
trace_id = TraceId.base16_hex_id_to_uint64(carrier['HTTP_X_B3_TRACEID'])
span_id = TraceId.base16_hex_id_to_uint64(carrier['HTTP_X_B3_SPANID'])
parent_id = TraceId.base16_hex_id_to_uint64(carrier['HTTP_X_B3_PARENTSPANID'])
flags = parse_flags(carrier['HTTP_X_B3_FLAGS'], carrier['HTTP_X_B3_SAMPLED'])
return nil if span_id.nil? || trace_id.nil?
return nil if span_id.zero? || trace_id.zero?
SpanContext.new(
trace_id: trace_id,
parent_id: parent_id,
span_id: span_id,
flags: flags
)
end
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