OpenTelemetry - CNCF/opentelemetry-cpp: Release v1.4.0

Name: opentelemetry-cpp

Owner: OpenTelemetry - CNCF

Release: OpenTelemetry C++ v1.4.0

Released: 2022-05-18

License: Apache-2.0

Release Assets:

v1.4.0 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

• Upgrade proto to v0.17.0, update log data model (https://github.com/open-telemetry/opentelemetry-cpp/pull/1383)
• Add noexcept/const qualifier at missing places for Trace API. (https://github.com/open-telemetry/opentelemetry-cpp/pull/1374)
• Update yield logic for ARM processor (https://github.com/open-telemetry/opentelemetry-cpp/pull/1325)

SDK

• Get span_id from context when Logger::Log received invalid span_id (https://github.com/open-telemetry/opentelemetry-cpp/pull/1398)
• Fix sharing resource in batched exported spans (https://github.com/open-telemetry/opentelemetry-cpp/pull/1386)
• Fix empty tracestate header propagation (https://github.com/open-telemetry/opentelemetry-cpp/pull/1373)
• Fix baggage propagation for empty/invalid baggage context (https://github.com/open-telemetry/opentelemetry-cpp/pull/1367)
• Add explicit type cast in baggage UrlDecode (https://github.com/open-telemetry/opentelemetry-cpp/pull/1353)

Exporters

• Fix scalar delete against array (https://github.com/open-telemetry/opentelemetry-cpp/pull/1356)
• Conditional include for codecvt header (https://github.com/open-telemetry/opentelemetry-cpp/pull/1355)
• Prometheus exporter (https://github.com/open-telemetry/opentelemetry-cpp/pull/1331)

Build

• Alpine image (https://github.com/open-telemetry/opentelemetry-cpp/pull/1382)
• Fix missing link to nlohmann_json (https://github.com/open-telemetry/opentelemetry-cpp/pull/1390)
• Prometheus exporter meters and instrument name (https://github.com/open-telemetry/opentelemetry-cpp/pull/1378)
• Export opentelemetry_otlp_recordable (https://github.com/open-telemetry/opentelemetry-cpp/pull/1365)
• Add missing include guard (https://github.com/open-telemetry/opentelemetry-cpp/pull/1357)
• Use latest TraceLoggingDynamic.h (https://github.com/open-telemetry/opentelemetry-cpp/pull/1354)
• ostream metrics cmake (https://github.com/open-telemetry/opentelemetry-cpp/pull/1344)
• Link opentelemetry_ext with opentelemetry_api (https://github.com/open-telemetry/opentelemetry-cpp/pull/1336)
• Dependencies image as artifact (https://github.com/open-telemetry/opentelemetry-cpp/pull/1333)
• Fix Ninja path (https://github.com/open-telemetry/opentelemetry-cpp/pull/1326)
• Fix metrics compiler warnings (https://github.com/open-telemetry/opentelemetry-cpp/pull/1328)

Metrics features

• Connect async storage with async instruments (https://github.com/open-telemetry/opentelemetry-cpp/pull/1388)
• Reuse temporal metric storage for sync storage (https://github.com/open-telemetry/opentelemetry-cpp/pull/1369)
• Fix class member initialization order (https://github.com/open-telemetry/opentelemetry-cpp/pull/1360)
• Simplify SDK Configuration: Use View with default aggregation if no matching View is configured (https://github.com/open-telemetry/opentelemetry-cpp/pull/1358)
• Remove exporter registration to meter provider (https://github.com/open-telemetry/opentelemetry-cpp/pull/1350)
• Fix output time in metrics OStream exporter (https://github.com/open-telemetry/opentelemetry-cpp/pull/1346)
• Enable metric collection for Async Instruments - Delta and Cumulative (https://github.com/open-telemetry/opentelemetry-cpp/pull/1334)
• Metrics histogram example (https://github.com/open-telemetry/opentelemetry-cpp/pull/1330)
• Implement Merge and Diff operation for Histogram Aggregation (https://github.com/open-telemetry/opentelemetry-cpp/pull/1303)

Examples

• Prometheus example (https://github.com/open-telemetry/opentelemetry-cpp/pull/1332)

Docs

• Getting started document using ostream exporter (https://github.com/open-telemetry/opentelemetry-cpp/pull/1394)

Notes:

• This release includes alpha milestone of OpenTelemetry Metrics.
• The name parameter for Log APIs is deprecated and will be removed in future releases. See details in CHANGELOG.md