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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

6.0.0 - 2026-03-25

Changed

  • Replaced legacy TransactionName attribute with sw.transaction (#748)
  • Breaking: upgraded to OTel Python 1.40.0/0.61.b0 and changed Logging SDK configuration (#749)

5.2.1 - 2025-12-16

Added

  • Added Copilot instructions (#723)

Changed

5.2.0 - 2025-12-09

Changed

  • Fixed thread safety of token bucket (#712)
  • Updated distro to always opt into database new semconv if supported by instrumentation (#713)
  • Updated workflows for PyPI trusted publishing (#719)
  • Upgraded to OTel Python 1.39.0/0.60b0 (#720)

5.1.0 - 2025-10-21

Changed

  • Upgraded to OTel Python 1.37.0/0.58b0 (#699)
  • Updated style for pylint 4.0 (#703)
  • Fixed APM metrics attributes calculation (#704)
  • Upgraded to OTel Python 1.38.0/0.59b0 (#705)

5.0.0 - 2025-09-10

Added

  • Added ruff CI/CD (#682, #685)
  • Added resource-detector-containerid to default detectors (#691)

Changed

  • Fixed PyPI publishing naming (#676)
  • Upgraded CI/CD actions with condition for older Alpine OS (#679)
  • Breaking: solarwinds_propagator cannot be used with tracecontext; OTEL_PROPAGATOR configuration requirements changed (#687)
  • Breaking: dropped support of SW_APM_EXPORT_LOGS_ENABLED, please instead use OTEL_PYTHON_LOGGING_AUTO_INSTRUMENTATION_ENABLED (#688, #692)

Removed

  • Breaking: removed warning of already-dropped integer_response argument for SDK solarwinds_ready (#689)
  • Breaking: removed already-no-op legacy span exporter (#690)

4.3.0 - 2025-08-07

Changed

  • Updated configurator Resource creation with service.instance.id (#666)
  • Updated Lambda layer tags and testing for Python 3.13 (#667)
  • Upgraded to OTel Python 1.35.0/0.56b0 (#668)
  • Cleaned up constants (#669)
  • Upgraded to OTel Python 1.36.0/0.57b0 (#672)

4.2.0 - 2025-07-15

Changed

  • Updated default histogram aggregation to exponential (#650)
  • Upgraded to OTel Python 1.34.1/0.55b1 (#657)
  • Removed unnecessary try-except when auto-instrumentation handles all exceptions (#660)
  • Updated pylint max-positional-arguments (#661)

4.1.0 - 2025-05-21

Added

  • Added local installation option to Verify Install CI/CD (#635)
  • Added Windows coverage to Verify Install CI/CD (#636)
  • Added macOS coverage to Verify Install CI/CD (#637)
  • Added psutil dependency (#629)

Changed

  • Simplify Lambda builds (#630)
  • Simplify Verify Install CI/CD (#633)
  • Fixed function signature (#634)
  • Fixed sampling/response time metrics descriptions (#639, #640)
  • Updated Verify Install CI/CD, requirements for system-metrics (#629, #638, #641)
  • Upgraded to OpenTelemetry 1.33.1/0.54b1 (#644)
  • Changed psutil dependency (#638)

Removed

  • Removed system-metrics default instrumentation in k8s (#642)
  • Removed psutil dependency (#641)

4.0.0 - 2025-04-29

Breaking changes

  • Breaking: APM Python is now pure Python (#556)
  • Breaking: Removed c-lib extension and legacy components (#549, #612, #614)
  • Breaking: Removed discontinued OboeAPI (#565)
  • Breaking: Changed SolarWindsSpanExporter to no-op for future removal (#572)
  • Breaking: Changed default export protocol to OTLP HTTP for all signals (#580)
  • Breaking: Removed legacy configuration logic (#570, #571, #583)
  • Breaking: AWS Lambda builds without architecture in layer name (#594)
  • Breaking: Removed discontinued grpcio-using dependencies from Lambda builds (#591)
  • Breaking: Updated local development setup for pure Python (#603)

Added

  • Added ApmConfig mapping for pure Python sampler (#552, #589)
  • Added pure Python transaction name pool (#559)
  • Added suppression of tracing when HTTP getSettings (#560)
  • Added resource detection for AWS, Azure, Kubernetes, UAMS written to resource attributes (#577, #596)
  • Added internal deduction of export endpoint from SW_APM_COLLECTOR (#590, #602)

Changed

  • Updated custom transaction naming as pure Python (#558)
  • Simplified spankind check (#561)
  • Updated http.route assignment based on semconv (#562)
  • Updated to register NoOp provider if not exporting (#566)
  • Fixed counter metrics init (#564)
  • Refactored ResponseTime metrics and request counters (#563, #567, #568)
  • Fixed transaction name environment config support (#569)
  • Redesigned custom Configurator (#578, #581)
  • Updated solarwinds_ready API function for pure Python (#582, #584, #599)
  • Updated Lambda dependencies and builds for resource detection (#593)
  • Fixed Configurator exporter loading to prevent ImportError (#592)
  • Updated smoke tests / verify_install for pure Python (#595)
  • Updated PyPI sdist, wheel publishes in pure Python (#597)
  • Update autoinstrumentation-python image builds for pure Python, beta testing (#598)
  • Updated default OTel export header assignment for SWO vs other (#601)
  • Fixed HttpSampler warning message (#604)
  • Fixed sw.w3c.tracestate attribute assignment (#606)
  • Updated integration tests (#605)
  • Updated units, descriptions of APM counters (#608)
  • Updated sampler init (#609)
  • Updated SW_APM_LOG_FILEPATH support for Pure Python (#613)
  • Fixed tracestate KV deletion (#617)

Removed

  • Removed warning log for Lambda mode (#600)
  • Removed unnecessary tests (#611, #610, #615)
  • Removed setup.py usage for builds (#616)

3.6.0 - 2025-04-07

Breaking changes

  • Breaking: SWO metrics is now enabled by default if configured for OTLP; SW_APM_EXPORT_METRICS_ENABLED limits instrumentor metrics only (#551)

Added

  • Added baseline components for custom pure Python sampling (#534)

Changed

  • Fixed OTLP logging component init (#550)
  • Upgraded Otel Python 1.31.1/0.52b1 (#553)
  • Fixed dependabot CI/CD (#554)
  • Updated OTLP exporter compression to be gzip by default (#573)
  • Updated all meters preferred aggregation temporality to be Delta (#574)
  • Fixed image CI/CD (#575)

3.5.0 - 2025-03-14

Changed

  • Updated image builds and scans (#529, #531, #535, #537)
  • Fixed warning message at boto3 lookup during APM export (#539)
  • Fixed custom propagator to support boto3, botocore instrumentation injection ([#540]#540)

3.4.0 - 2025-02-18

Added

  • Added autoinstrumentation image publishing (#481, #490, #520, #523)
  • Added support for SW_APM_ENABLED_SQLCOMMENT_ATTRIBUTE (#524)

Changed

  • Fixed PyPI publishing (#488)
  • Fixed version lookup logs (#489)
  • Changed exporter header defaults (#494)
  • Make service_key updates more general (#496)
  • Fixed AttributeError if Propagators None (#501)
  • Fixed test mocks (#502)
  • Upgraded to OpenTelemetry Python 1.30.0/0.51b0 (#521)

Removed

  • Removed support of deprecated OTEL_SQLCOMMENTER_ENABLED and OTEL_SQLCOMMENTER_OPTIONS (#522)

3.3.2 - 2025-01-06

Changed

  • Updated error reporting to SWO (#470)

3.3.1 - 2024-11-21

Changed

  • Upgraded OpenTelemetry API/SDK and instrumentation 1.28.2/0.49b2 (#459)

3.3.0 - 2024-11-14

Changed

  • Fixed CodeQL warnings (#445, #446)
  • Upgraded OpenTelemetry API/SDK and instrumentation 1.28.1/0.49b1, remove pkg_resources usage (#450)

3.2.0 - 2024-10-08

Added

  • Added support for SW_APM_EXPORT_METRICS_ENABLED (#439)

3.1.0 - 2024-10-01

Added

  • Added linting for all supported Python versions (#428)
  • Added support for SW_APM_ENABLED_SQLCOMMENT, SW_APM_OPTIONS_SQLCOMMENT(#434, #437)

Changed

  • Fixed AwsLambdaInstrumentor loading in Lambda environment (#430)
  • Fixed code style (#433)
  • Deprecated OTEL_SQLCOMMENTER_ENABLED, OTEL_SQLCOMMENTER_OPTIONS (#434)

3.0.0 - 2024-09-04

Added

  • Added Python 3.12 support (#422)
  • Added ReversingLabs scan before publishes (#420)

Changed

  • Upgraded OpenTelemetry API/SDK and instrumentation 1.27.0/0.48b0 (#422)
  • Skip logs_headers setdefault in lambda (#425)

Reverted

  • Reverted distro doing setdefault to disable AwsLambdaInstrumentor if outside Lambda, because of update in Otel 1.27.0/0.48b0 (#422)

2.2.0 - 2024-08-12

Added

Changed

  • Upgraded OpenTelemetry API/SDK and instrumentation 1.26.0/0.47b0 (#398, #406)
  • Distro does setdefault to disable AwsLambdaInstrumentor if outside Lambda (#405)

Reverted

  • Reverted upgrade OpenTelemetry API/SDK and instrumentation 1.26.0/0.47b0 because of FastAPI instrumentation bug it introduces (#406)
  • Reverted add of Python 3.12 support because of revert of API/SDK upgrade (#406)

2.1.0 - 2024-07-17

Changed

  • Move builds and tests to gh apm-arm-runner (#385)
  • Don't inject baggage header if empty (#386)
  • Always unset local token bucket capacity/rate (#388)

2.0.0 - 2024-06-18

Changed

  • Upgraded OpenTelemetry API/SDK and instrumentation 1.25.0/0.46b0 (#364, #375, #376, #377, #380)
  • Fixed version lookups at APM startup (#378)
  • Upgraded c-lib 15.0.1 (#379)

Removed

  • Removed docker-compose version keys (#381)

1.7.0 - 2024-05-16

Changed

  • Fixed log duplication (#357)
  • Refactored sampler (#359)
  • Removed debug line (#360)
  • Sampler inits with APM-proto exporter (#366)
  • Fixed APM-proto export for non-scalar attribute types (#367)

1.6.0 - 2024-04-02

Added

  • Added layer production workflow (#341)
  • Added check_lambda_modules before publish (#346)

Changed

  • Upgraded layer asgiref 3.8 (#343)
  • Fixed init event logging (#345)
  • Upgraded layer grpcio 1.62.1 (#351)
  • Upgraded c-lib 14.1.0 (#352)

1.5.0 - 2024-03-18

Added

  • Added more sw resource attributes to metrics (#327)
  • Added default disabling of AWS context propagation (#333)

Changed

  • Fixed grpcio ImportError if outside Python 3.8 (#326)
  • Improve load_instrumentor error logging (#332)
  • Fixed APM-proto reporter status logging (#336)

1.4.0 - 2024-03-04

Changed

  • SolarWinds c-lib 14.0.3 (#316)
  • Update layer exec wrapper (#317)
  • Non-empty http.* attributes on metrics (#319)
  • Add formatter to RotatingFileHander (#320)
  • Fixed sw.is_error attribute type (#321)
  • Update CI role (#324)

Removed

  • Remove ForceFlushSpanProcessor (#312)

1.3.0 - 2024-02-20

Changed

  • Fixed release_pr script (#302)
  • OTLP traces, metrics sw.transaction attribute with environment customization (#307)
  • Fixed service key, service name usage (#309)
  • Fixed exporter defaults based on protocol (#310)
  • Updated workflow dependency (#304)

Removed

  • Removed experimental config support (#308)

1.2.0 - 2024-02-05

Changed

  • Updated OTLP metrics components initialization (#289)
  • Fixed no-op function signature (#295)
  • Set histogram preferred temporality to delta (#296)
  • Set Periodic metric reading interval infinity (#297)
  • Fixed response_time metrics for milliseconds (#298)
  • Renamed local variables (#300)

Removed

  • Removed meters for sample_rate, sample_source (#299)

1.1.1 - 2024-01-31

Changed

  • Updated lambda layer workflow (#278)
  • Fixed release PR action (#282)
  • SolarWinds c-lib 14.0.2 (#288)
  • Added environment logging (#291)
  • Linting (#292)

Removed

  • Removed sw.nonce metrics attribute (#284)
  • Removed todos (#285)

1.1.0 - 2024-01-18

Added

  • Added configuration of transaction name in response_time metrics by lambda environment (#257)
  • Added Dependabot config (#261, #270)
  • Added support for SW_APM_LOG_FILEPATH (#275)

Changed

Removed

  • Removed unused mend/whitesource config (#260)

1.0.2 - 2023-12-04

Changed

1.0.1 - 2023-11-21

Added

  • Added lambda build workflows (#221)
  • Integrated OboeAPI (#223)

Changed

  • Updated layer extension build target (#215)
  • Updated experimental exporter defaults (#217)
  • Optimized layer builds (#214)
  • Updated setup.py and OboeAPI usage (#224)
  • Fixed release workflows (#226)

1.0.0 - 2023-11-14

Changed

  • Change c-lib usage and agent_enabled calculation if is_lambda (#211)
  • Updated Makefile for APM Python lambda builds (#212)
  • Move organization and repo (#218)

0.18.0 - 2023-10-31

Added

  • Add experimental configuration of OpenTelemetry metrics (#200)
  • Add generation and OTLP export of trace.service.response_time metrics (#201)
  • Add support for SW_APM_TRANSACTION_NAME (#206)

Changed

  • Fixed test dependency for support of Flask < 3 (#202)
  • Fixed EC2 runner publish actions (#203)
  • Updated install test coverage for Debian 11 (#204)
  • Updated Codeowners (#205)

0.17.0 - 2023-09-20

Changed

  • OpenTelemetry API/SDK and instrumentation 1.20.0/0.41b0 (#195)
  • Update CODEOWNERS (#196)

0.16.0 - 2023-08-24

Changed

  • Updated to liboboe version 13.0.0 (skipped 12.4.1) (#192)

0.15.0 - 2023-08-17

Added

  • Add context-in-logs configuration with OTEL_SQLCOMMENTER_OPTIONS (#182)
  • Add CODEOWNERS file (#189)

Changed

  • Remove unused baggage from propagator injection (#184)
  • Simplify internal baggage setting for custom naming (#186)
  • Fix custom name storage clearing when not sampled (#187)

Removed

  • Remove old print statements in exporter (#183)
  • Remove unneeded Spec key from error events (#188)

0.14.0 - 2023-07-20

Changed

  • Refactored propagator and sampler (#175)
  • Renamed CI secrets (#176)
  • Updated to liboboe version 12.4.0 (#177)
  • OpenTelemetry API/SDK and instrumentation 1.19.0/0.40b0 (#178)

Removed

  • Removed PackageCloud build workflows (#179)

0.13.0 - 2023-07-11

Added

  • Add OTEL_SQLCOMMENTER_ENABLED for some instrumentation libraries (#169)

Changed

  • aarch64 builds run on EC2 (#170)
  • Metric format is ResponseTime instead of both for non-AO backend (#172)

0.12.1 - 2023-06-13

Added

  • Add log warning when set_transaction_name with empty name (#162)

Changed

  • Fix accepted config boolean values (#166)

Removed

  • Removed unused log_trace_id config storage (#163)
  • Removed unused enable_sanitize_sql config storage (#164)
  • Removed unused is_grpc_clean_hack_enabled config storage (#165)

0.12.0 - 2023-06-01

Changed

  • Bugfix: APM tracing disabled when platform not supported (#153)
  • Updated to liboboe version 12.3.1 (#155)
  • Verify Installation tests run on EC2 (#156, #160)
  • Installation tests include Ubuntu 22 (#158)

0.11.0 - 2023-05-25

Added

  • Added trace context to logging (#146)

Changed

  • Adjusted config file logging (#147)
  • OpenTelemetry API/SDK 1.18.0 (#150)
  • Added Amazon 2023 install tests; removed Amazon 2018 and Amazon 2 install tests (#151)

0.10.0 - 2023-05-01

Added

  • Add custom transaction filtering support (#136, #137, #138, #139, #141)
  • Add span attribute sw.span_name at export (#143)

Removed

  • Removed unused prepend_domain_name config storage (#140)

0.9.0 - 2023-04-20

Changed

  • OpenTelemetry API/SDK 1.17.0 (#131)
  • SolarWinds c-lib 12.2.0, to fix memory leak in extension (#132)
  • Adds support for SW_APM_CONFIG_FILE (#133)
  • Updates Span Layer to be <KIND>:<NAME> (#134)

0.8.3 - 2023-03-21

Changed

  • Bugfix: fixed errors at API set_transaction_name calls when APM library tracing disabled (#126)
  • SolarWinds c-lib 12.1.0, for enhanced metadata retrieval, skipping metrics HTTP status if unavailable, fixed threading locking issue (#127)

0.8.2 - 2023-03-13

Changed

  • Bugfix: fixed noisy trace state KV deletion attempts when key not present (#121)
  • Bugfix: fixed version lookup failures for instrumented aiohttp library (#122)

0.8.1 - 2023-03-08

Changed

  • Fixed installation from source distribution (#119)

0.8.0 - 2023-02-28

Added

  • Add set_transaction_name API method (#115)

Changed

  • Deprecated solarwinds_apm.apm_ready.solarwinds_ready. Instead, use solarwinds_apm.api.solarwinds_ready. (#115)
  • OpenTelemetry API/SDK 1.16.0 (#116)
  • OpenTelemetry Instrumentation 0.37b0 (#116)

0.7.0 - 2023-02-22

Added

  • Add ARM support (#111)

Changed

  • Updated CodeQL scans (#112)

0.6.0 - 2023-02-08

Changed

  • SolarWinds c-lib 12.0.0, for gRPC upgrade (#107)
  • Bugfix: fix version lookup failures for instrumented ASGI libraries (#108)

Removed

  • Drop centos7 support (#107)
  • Drop Debian 9 support (#107)
  • Drop Amazon Linux 2018.03 support (#107)

0.5.0 - 2023-01-18

Added

  • Add support for OTEL_SERVICE_NAME, OTEL_RESOURCE_ATTRIBUTES environment variables (#90)
  • Add prioritization of OTEL_SERVICE_NAME, OTEL_RESOURCE_ATTRIBUTES, SW_APM_SERVICE_KEY for setting service.name (#103)

Changed

  • Update Init message with HostID (#90)
  • Update Init message with Python framework versions (#94, #100)
  • SolarWinds c-lib 11.1.0, for Init message updates (#90)
  • Updated exported spans with Python framework versions (#92)
  • Bugfix: existing attributes without parent context now write to spans (#102)
  • Bugfix: setting sw.tracestate_parent_id is based on existence of remote parent span (#102)
  • Fix install tests on Ubuntu with Python 3.10/3.11 using older setuptools version (#104)

0.4.0 - 2023-01-03

Added

  • Add security policy (#95)
  • Add issue templates (#96)

Changed

  • OpenTelemetry API/SDK 1.15.0 (#91)
  • OpenTelemetry Instrumentation 0.36b0 (#91)
  • x-trace-options header custom-* KVs written to entry span attributes (#85)
  • Fix x-trace-options-signature extraction (#85)
  • Fix validation of x-trace-options header (#87)
  • Fix calculation of x-trace-options-response header (#88)
  • Update GH organization (#96)

0.3.0 - 2022-11-24

Changed

  • Fix flake8 and installation tests (#83)

0.2.2 - 2022-11-24

Added

  • Added integration tests (#67)
  • Added sdist and wheel extension file checks as part of library packaging (#75)
  • Added linting and code formatting (#80, #82)

Changed

  • OpenTelemetry API/SDK 1.14.0 (#76)
  • OpenTelemetry Instrumentation 0.35b0 (#76)
  • Reformatted code based on linting rules (#81)
  • Fixed changelog links (#78)

0.2.1 - 2022-11-08

Changed

  • Version bump for rebuild of 0.2.0 (#73)

0.2.0 - 2022-11-07

Added

  • Added solarwinds_ready method (#64)
  • Added startup __Init with SWO (#64)
  • Added more unit tests (#68)

Changed

  • SolarWinds c-lib 11.0.0, for AppOptics certificate compatibility (#70)
  • Fixed logging vulnerabilities (#63)
  • Update packaging and install tests (#71)

0.1.0 - 2022-10-13

Added

  • Initial release for GA (alpha)
  • OpenTelemetry API/SDK 1.13.0, for trace generation
  • OpenTelemetry Instrumentation 0.34b0, for (auto-)instrumentation of common Python frameworks
  • SolarWinds c-lib 10.6.1, for unified inbound metrics generation, trace sample decision, and export to SWO
  • W3C trace context propagation
  • OTel, APM instrumentation startup, and trigger trace configurable with environment variables