v1.23.0

This release marks the first where the core of HTTP semantic conventions have stabilized.

Breaking

• BREAKING: Rename http.resend_count to http.request.resend_count. (#374)
• BREAKING: Change network.protocol.name from recommended to opt-in in HTTP semconv. (#398)
• BREAKING: Define url.scheme in terms of logical operation in HTTP server semconv. (#376)
• BREAKING: Change network.transport from recommended to opt-in in HTTP semconv. (#402)
• BREAKING: Change network.type from recommended to opt-in in HTTP semconv. (#410)
• BREAKING: Factor in X-Forwarded-Host / Forwarded when capturing server.address and server.port. (#411)
• Remove thread.daemon, and introduce jvm.thread.daemon instead. Introduce jvm.thread.state attribute and add it to jvm.thread.count metric. (#297)
• Fix server.port to be not required when server.address is not set. (#429)
• Use seconds as default duration for FaaS duration histograms (#384)
• BREAKING: Remove total from list of well-known values of system.memory.state attribute. (#409)
• Remove url.path default value. (#462)
• Remove conditional requirement on network.peer.address and network.peer.port (#449)
• Change user_agent.original from recommended to opt-in on HTTP client spans. (#468)
• Change http.request.body.size and http.response.body.size from recommended to opt-in. (#460)
• Clarify that client.port is the port of whichever client was captured in client.address. (#471)
• Change client.port from recommended to opt-in on HTTP server spans (#472)
• BREAKING: Make url.scheme opt_in for HTTP client and remove default value for server.port making it required on the client.
  (#459)
• Make client.address sampling relevant on HTTP server spans. (#469)
• Change network.protocol.name from opt-in to conditionally required. (#478)
• Remove outdated http.request.header.host guidance (#479)
• Change sampling relevant from MUST to SHOULD (#486)
• Make user_agent.original and http.request.header.* sampling relevant on HTTP server spans. (#467)

Features

• Adds session.previous_id to session.md (#348)
• Metric namespaces SHOULD NOT be pluralized. (#267)
• Add opt-in system.memory.limit metric. (#409)
• Add host.mac resource attribute convention. (#340)
• Mark HTTP semantic conventions as stable. (#377)

Fixes

• Clarify that error.type should be the fully-qualified exception class name when it represents an exception type. (#387)
• Add cardinality warning about two opt-in HTTP metric attributes (#401)
• Change server.port from recommended to conditionally required on HTTP server semconv. (#399)
• Add cardinality warning about two opt-in HTTP metric attributes to all HTTP metrics. (#412)
• Remove outdated note about not recording HTTP server.address when only IP address available. (#413)
• Clarify HTTP server definitions and server.address|port notes. (#423)
• Change the precedence between :authority and Host headers when populating server.address and server.port attributes. (#455)

New Contributors

• @michaelklishin made their first contribution in #405
• @trisch-me made their first contribution in #400
• @adamzapasnik made their first contribution in #437
• @kaiyan-sheng made their first contribution in #453

Full Changelog: v1.22.0...v1.23.0