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Changelog

Unreleased

Configuration

Enhancements

  • SPLUNK_PROFILER_CALL_STACK_INTERVAL defaults to 1000 for single-threaded runtimes.

Repository

Enhancements

  • Clarify the default sampling algorithm. #284
  • Require a CLA Assistant GitHub workflow. #269
  • Update the CLA notice in CONTRIBUTING.md template. #269 #274
  • Add Renovate as an acceptable alternative to Dependabot. #271
  • Add disk buffering configuration options for RUM mobile instrumentation libraries. #275
  • Update telemetry resource attributes #277:
    • Deprecate splunk.distro.version,
    • Change telemetry.auto.version to telemetry.distro.version,
    • Add telemetry.distro.name resource attribute.

Semantic Conventions

Enhancements

  • Deprecate text format for profiling.data.format. (#285)

1.6.0 - 2023-09-14

Configuration

Enhancements

  • Update the log message when service.name resource attribute is not set.

Repository

Enhancements

  • Update CONTRIBUTING.md template to require signing commits.
  • Suggest changelog sub-sections and labels.
  • Require releases to contain a link to the upstream release notes.
  • Add repository permission exception for bot accounts.
  • Remove signalfx/gdi-specification-* teams from permissions.
  • Add admins team.

1.5.0 - 2023-03-30

Configuration

Bugfixes

  • Remove SPLUNK_METRICS_ENDPOINT from Instrumentation Libraries (it was never really stable).

Enhancements

  • Add SPLUNK_PROFILER_MEMORY_ENABLED.
  • Deprecate jaeger-thrift-splunk option for OTEL_TRACES_EXPORTER.
  • Remove the policy regarding Zipkin exporter.
  • OTLP exporter can use either grpc or http/protobuf as the default transport protocol.

Repository

Enhancements

  • Add tag protection rule requirement.
  • Add Dependabot security configuration requirements.
  • Grant Admin role for maintainers team.
  • Allow using the documentation public repository and reference it in the CONTRIBUTING.md template.
  • Require documenting all configuration parameters that are relevant to Splunk Observability Cloud.
  • Require documenting all configuration parameters whose default or accepted values deviate from upstream.

Semantic Conventions

Breaking Changes

  • Remove telemetry.sdk.language attribute from ResourceLogs.resource.

Bugfixes

  • Remove redunant and conflicting statement about file and line for ResourceLogs.

Enhancements

  • Recommened adding container.id, host.id, process.pid attributes to ResourceLogs.resource.
  • Recommend setting process resource attributes.
  • Recommend collecting runtime environment metrics.
  • Add a required profiling.data.total.frame.count attribute to LogRecord for pprof-gzip-base64.
  • Relax the meaning of allocation in LogRecord for pprof-gzip-base64.

1.4.0 - 2022-08-16

Configuration

  • The RUM configuration is now stable.

Semantic Conventions

Breaking Changes

  • Remove namespace field from profiling stack-trace lines and incorporate it to the function field.
  • Remove line and column ranges in profiling stack-trace lines.

Bugfixes

  • Clarify that there are two metadata lines (thread metadata and thread state), both of which can be left empty, containing only the newline.

Enhancements

  • Add a required telemetry.sdk.language attribute to ResourceLogs.resource.
  • Allow : characters in file names.
  • Clarify source.event.period unit is milliseconds.

1.3.0 - 2022-05-19

General

  • Add support information into versioning specification.
  • Add behaviors specification.
  • Refactor profiling into existing specification structure.

Bug fixes

  • Replaced the example for Java system properties in specification/configuration.md.
  • Increase profiling rate from 1s to 10s.

Configuration

Breaking Changes

  • Change the Kubernetes package management solutions configuration option default for splunkPlatform.metricsEnabled to be false.

Enhancements

  • Add SPLUNK_REALM to required environment variables that need to be supported by instrumentation libraries.
  • Add SPLUNK_PROFILER* environment variables (SPLUNK_PROFILER_CALL_STACK_INTERVAL, SPLUNK_PROFILER_ENABLED, SPLUNK_PROFILER_LOGS_ENDPOINT) to the required configuration for instrumentation libraries.
  • Add OTEL_TRACES_EXPORTER to required environment variables that need to be supported by serverless instrumentation libraries.

Semantic Conventions

Breaking Changes

  • Use os.name instead of os.type for mobile RUM libraries.

Bugfixes

  • Correct stability guarantee of the RUM section as experimental.

Enhancements

  • Add experimental profiling semantic conventions.

1.2.0 - 2021-11-15

General

Bug fixes

  • Properly use the terms "component" and "GDI repository".

Configuration

Enhancements

  • Add experimental specification for the configuration for Kubernetes package management solutions.

Bug fixes

  • Properly specify configuration statuses for RUM and serverless. These sections of the configuration specification are not stable and are correctly identified as such now.
  • Clarify requirement for RUM beaconEndpoint configuration value to be HTTPS only on systems that allow such enforcement.

Versioning

Enhancements

  • Add information about packaging project versioning. This allows packaging projects to be released as stable without the need for the project they package to be stable.

1.1.0 - 2021-10-26

Repository

  • Update template CODEOWNERS file to include the Splunk documentation team.
  • Add repository LICENSE template.
  • Clarify maintainer and approver teams can be shared across repositories.

Configuration

  • Add support for the OTEL_SERVICE_NAME environment variable.
  • Remove suggestion for end users of instrumentation libraries to provide configuration.
  • Add RUM libraries configuration specification.
  • Set the default value for OTEL_ATTRIBUTE_VALUE_LENGTH_LIMIT to 12000, instead of the default OpenTelemetry of unlimited.
  • Require repositories to link to official Splunk docs in README.md.
  • Add Serverless libraries configuration specification.

Profiling

  • Initial, experimental, specification for profiling libraries added.

1.0.0 - 2021-06-01

General

  • First stable release of the GDI specification. This release includes stable requirements and recommendations for GDI repository composition and versioning and Splunk distributions of OpenTelemetry configuration.

1.0.0-rc.3 - 2021-05-25

General

  • Update stability guarantee for all specification documents.

1.0.0-rc.2 - 2021-05-19

General

  • How experimental components are added and maintained in a project is now specified.
  • Recommendations and requirements for distribution semantic conventions have been added.

Repository

Enhancements

  • Guidance for repository permissions have been clarified. No individual is allowed to be granted permissions and all approvers now are assigned write permission to the repository.
  • Relaxed requirement to include a RELEASING.md file. Projects with private build processes should not publish this information.

Versioning

Enhancements

  • Clarified that the versioning policy applies to components of repositories.

1.0.0-rc.1 - 2021-05-06

General

  • Initial README, configuration, repository, and versioning specification
  • Initial contributing and changelog files
  • Initial CODEOWNERS

Notes

  • Primary focus is on Instrumentation Libraries for initial 1.0 release
  • Initial Collector specification defined