Component(s)

dynamic-control

Is your feature request related to a problem? Please describe.

The initial POC implementation is essentially complete (#2546). The next steps needed to make it more fully featured and aligned with the spec are listed here.

• Documentation on how to use the extension [dynamic control] Update README on instructions for using the project as an extension #2885
• Enabling the extension to be used with declarative config as well as autoconfiguration (needs a ComponentProvider and a DeclarativeCustomizerProvider) [dynamic control] add initializing from declarative config (copy of #2881) #2967
• Per feedback change TelemetryPolicy to be interface (or abstract?), with a special instance for deleted elements [dynamic control] Add deleted policy #2943 [dynamic control] Apply deleted policy to telemetry policy deletion flow #2944 [dynamic control] Make TelemetryPolicy an interface #2948
• Align to spec - policy identity is incomplete. Spec requires every policy to have an id and name [dynamic control] Align to name and ID in spec for policies #2926 [dynamic control] Add identity to existing policy classes #2942 [dynamic control] refactor sourceKey to policyId to align to spec #2949
• TelemetryPolicy should retain the source as, when comparing, the sources are prioritized, so eg a change from OpAMP source cannot be overridden except from another OpAMP source change, but a change from a file can be overridden, etc [dynamic control] Add priority ordering to sources #2970 [dynamic control] Add SourceKind to TelemetryPolicy #2972 [dynamic control] propagate SourceKind across validation and policy creation #2973 [dynamic control] drop comparable policies according to priority for an update #2974 [dynamic control] clean up unneeded code #3004
• refactor TelemetryPolicy implementations to enforce some abstract methods that get called from equals and hashCode or whatever is required for comparison [dynamic control] Align aggregation to spec #2960 [dynamic control] remove policy equals/hashcode as they are no longer needed #2968
• Align to spec, support acceptable message structure
• Align to spec clarification
• Add further available policies
  • disabling instrumentations
  • disabling all instrumentations
  • stop exporting per signal
  • change log level
  • enable inferred spans
  • change opamp polling interval
• Redo how DelegatingSampler works to handle more than one sampler, eg both probability and rule-based.
  • Then add a rule-based sampler policy to dynamic control
• Add further provider implementations [dynamic control] Add change checking for file & http sources #2975 [dynamic control] refactor OpampPolicyProvider for other PolicyProviders #2987
  • Add provider implementation for File
  • Add provider implementation for HTTP
• Align to spec (current implementation has drifted in some areas) [dynamic control] only change the sampling rate if it has changed value #2957
• TODO - reconsider parsing per suggestion
• Implement TODOs
• Declarative config telemetry policy node semconv
• Telemetry policy names semconv

Describe the solution you'd like

Implement the above items in small PRs to keep review overhead low

Describe alternatives you've considered

No response

Additional context

Part of #2416

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