open-feature/php-sdk

Add OpenTelemetry-Compatible Telemetry Utility Function

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#143 opened on Feb 13, 2025

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enhancementgood first issuehelp wanted

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Description

Description

Add a telemetry utility function to the SDK that can be used within the finally stage of a hook to create OpenTelemetry-compatible telemetry signals. It must comply with the OpenTelemetry specification and meet the technical requirements, including those from Appendix D of the OpenFeature Specification and the OpenTelemetry Semantic Conventions for Feature Flags.

Requirements

  • Must comply with the OpenTelemetry (OTel) specification.
  • Must be included in the SDK.
  • Must not include any third-party dependencies.
  • Must adhere to the observability conformance requirements in Appendix D of the OpenFeature Specification.

Example implementation

A JavaScript implementation can found here.

Contributor guide

Research direction
Study the JavaScript implementation linked in the issue (https://github.com/open feature/js sdk/pull/1120) and adapt it to PHP, ensuring compliance with OpenTelemetry specification and OpenFeature Appendix D. Focus on implementing the telemetry utility without third party dependencies.
Tech stack
php
Domain
backendobservability
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
PHPOpenTelemetry
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60