Description

Spec PR #674 (the diff) makes some updates and clarifications to the specs for span.context.service.target.* and span.context.destination.service.resource. Changes may be relevant if your agent has implemented #621.

1. If your agent still derives destination.service.resource from span context directly, rather than from service.target.* fields, and your agent provides an API for the user to tweak service.target.*, then you may want to update.
2. If your agent implements compressed spans, then the logic to set span.name to Calls to <...> has become slightly more complex.
3. If your agent implements the OTel Bridge then there is an update to the compatibility mapping pseudo-code to set service.target.* rather than destination.service.resource.

Agent Issues

• [META 697] Backend granularity (service.target.*) clarifications apm-agent-dotnet#1849
• [META 697] Backend granularity (service.target.*) clarifications apm-agent-python#1657
• [META 697] Backend granularity (service.target.*) clarifications apm-agent-go#1331
• [META 697] Backend granularity (service.target.*) clarifications apm-agent-php#791