What happened? Key portions of the declarative configuration specification have been marked stable, including
The JSON schema for the data model, as defined in opentelemetry-configuration which released a stable 1.0.0 release The YAML representation of the data model in files (spec link) The in-memory representation of the data model (spec link) The generic representation of a YAML mapping node, ConfigProperties (spec link) The mechanism for referencing custom plugin components in the data model, PluginComponentProvider (spec link) The SDK operations for parsing a YAML file and instantiating SDK components, Parse and Create (spec link) The standard env var to indicate that declarative config should be used and to point to the path of a config file OTEL_CONFIG_FILE (spec link) What’s the status of language implementations? As of now, there are implementations available in five languages:

OpenTelemetry's platform is an observability framework, offering insights into distributed tracing, metrics collection, and log management for cloud-native applications. Through documentation, tutorials, and community contributions, OpenTelemetry provides insights into instrumenting applications to monitor performance and troubleshoot issues. Developers and DevOps teams can learn about distributed tracing standards, telemetry data formats, and integration with observability tools to gain visibility into complex distributed systems.

OpenTelemetry

OpenTelemetry's declarative configuration specification has reached stable status. Key stable components include the JSON schema (opentelemetry-configuration 1.0.0), YAML file format, in-memory data model, ConfigProperties, PluginComponentProvider, Parse/Create SDK operations, and the OTEL_CONFIG_FILE environment variable. Implementations are available in C++, Go, Java, JavaScript, and PHP, with .NET and Python in progress. Future plans include making declarative config the default for new SDK feature proposals, deprecating poorly-interoperable environment variables, expanding language support, and working on dynamic configuration at runtime.

Declarative configuration is stable!

What’s the status of language implementations?