OpenTelemetry C++ v1.6.0 (Metrics release candidate)

v1.6.0 release (Metrics release candidate)

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

• No API change

SDK

• Fix log sdk builder (#1486) by @marcalff in #1524
• [Trace] Add SpanData getter for Span Recordable by @lalitb in #1508
• Fix infinitely waiting when shutdown with more than one running http sessions. by @owent in #1549

Exporter

• Prometheus exporter support Gauge Type by @esigo in #1553
• [NFC] Improve scope/instrument names in metrics OStream exporter by @bsarden in #1544

Build

• vscode debug launch.json by @esigo in #1537
• Fix several compiling/linking errors by @owent in #1539
• Fix code scanning alert by @esigo in #1530
• Add CI jobs for new and deprecated metrics by @esigo in #1531

Test

• Fix metrics unit test memory leak by @esigo in #1533

Metrics Features

• Add configuration options for Aggregation creation by @esigo in #1513
• Support multiple async callbacks by @lalitb in #1495
• OStream exporter should print out resource attributes by @bsarden in #1523
• Histogram min/max support by @esigo in #1540
• Metric aggregation temporality controls by @lalitb in #1541
• Fix OTLP gRPC Metrics env variables by @lalitb in #1543
• Fix default Metric view name by @esigo in #1515
• Fix IWYU error in instruments.h by @bsarden in #1555
• Fix metrics context circular reference by @esigo in #1535
• fix metrics race condition by @esigo in #1552
• remove throw check from metrics with noexcept by @esigo in #1560
• Fix metrics asan and tsan CI by @esigo in #1562
• Calling Observable Instruments callback during metrics collection by @lalitb in #1554

New Contributors

• @bsarden made their first contribution in #1523

Full Changelog: v1.5.0...v1.6.0