Changelog for hs-opentelemetry-propagator-w3c

Unreleased

1.0.0.0 - 2026-05-29

• propagatorNames renamed to propagatorFields and now returns actual header names (traceparent, tracestate) instead of tracecontext, conforming to the spec Fields requirement
• Fix multi-header tracestate inbound: all tracestate headers are now combined per RFC 7230 before parsing (previously only the first was used)
• Fix: reject traceparent with all-zero trace-id or parent-id (W3C spec requires these to be non-zero)

0.1.0.0

Added

• Complete W3C tracestate header parsing and encoding support
• tracestateParser for parsing W3C tracestate headers according to specification
• encodeTraceState function for serializing TraceState to W3C format
• encodeTraceStateFull for serializing complete TraceState without HTTP header limits
• encodeTraceStateMultiple for splitting TraceState into multiple headers with size constraints
• decodeTraceStateMultiple for combining multiple tracestate headers per RFC7230
• Proper validation of tracestate keys and values per W3C spec
• Support for up to 32 tracestate entries as per specification
• Multi-tenant key format support (tenant@vendor)
• Automatic removal of oversized entries (>128 chars) as per W3C truncation guidance
• RFC7230-compliant header field combining with comma separation
• Comprehensive test coverage for tracestate functionality

Changed

• encodeSpanContext now includes tracestate in returned tuple
• decodeSpanContext now properly decodes and validates tracestate headers

Dependencies

• Added text dependency for tracestate text processing

0.0.1.4

• Support newer dependencies

0.0.1.1

• Update to hs-opentelemetry-api == 0.0.2.*

0.0.1.0

• Initial release