Immutable context for trace propagation across boundaries. More...
#include <span_context.hpp>
Collaboration diagram for span_context:
Public Member Functions | |
| bool | is_valid () const |
| Checks if the context is valid (both trace_id and span_id valid). | |
| bool | is_sampled () const |
| Checks if this trace is marked as sampled. | |
| auto | operator<=> (const span_context &) const =default |
| Default comparison operator. | |
Public Attributes | |
| trace_id | trace |
| The trace identifier. All spans in a trace share this ID. | |
| span_id | span |
| The span identifier. Unique within a trace. | |
| std::uint8_t | trace_flags = 0x01 |
| W3C trace flags (8-bit). Bit 0 indicates if the trace is sampled. | |
Detailed Description
Immutable context for trace propagation across boundaries.
A span_context contains the identifying information for a span and is designed to be propagated across process, service, and network boundaries. This is the core data structure used for distributed tracing context propagation, compatible with W3C Trace Context.
Member Data Documentation
◆ trace_flags
| std::uint8_t trace_flags = 0x01 |
W3C trace flags (8-bit). Bit 0 indicates if the trace is sampled.
0x01 = sampled (the trace should be recorded) 0x00 = not sampled
