v1.3.0 release

Release of core packages

• opentelemetry-api
• opentelemetry-sdk

and exporter packages:

• opentelemetry-exporter-otlp (gRPC + HTTP/JSON)
• opentelemetry-exporter-etw
• opentelemetry-exporter-zipkin
• opentelemetry-exporter-jaeger (thrift + UDP/HTTP)

Changelog

API

• Allow extension of the lifetime of ContextStorage. (#1214)

SDK

• Bugfix: span SetAttribute crash (#1283)
• Reorder the destructor of members in LoggerProvider and TracerProvider (#1245)

Exporters

• ETW provider handle cleanup (#1322)
• Fix: use CURLOPT_TIMEOUT_MS to config OtlpHttpExporter's timeout instead of CURLOPT_TIMEOUT (#1261)
• Jaeger Exporter - Populate Span Links (#1251)

Build

• Move public definitions into opentelemetry_api. (#1314)
• Rename http_client_curl to opentelemetry_http_client_curl (#1301)
• Update grpc to v1.43.2 to support VS2022/MSVC 19.30 and bazel 5.0 (#1207)

Experimental metrics features

• OStream example (#1312)
• Add InstrumentationInfo and Resource to the metrics data to be exported. (#1299)
• Implement periodic exporting metric reader (#1286)
• Synchronous Metric collection (Delta , Cumulative) (#1265)
• Metrics exemplar round 1 (#1264)
• Enable metric collection from MetricReader (#1241)
• Asynchronous Aggregation storage (#1232)
• Synchronous Instruments - Aggregation Storage(s) creation for configured views (#1219)
• Add Aggregation storage (#1213)
• Ostream metric exporter (#1196)
• Filtering metrics attributes (#1191)
• Sync and Async Instruments SDK (#1184)
• Add Aggregation as part of metrics SDK. (#1178)

Notes:

#1301 added opentelemetry_ as prefix to http_client_curl library for resolving potential naming conflict, this could break existing cmake build if http_client_curl is listed as explicit dependency in user's cmake file.