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Example code of temporal/open-telemetry-interceptors

Informations about the package open-telemetry-interceptors

Temporal OpenTelemetry Interceptors

Introduction

The temporal/open-telemetry-interceptors package provides OpenTelemetry interceptors for tracing workflows and activities within the Temporal system using the OpenTelemetry SDK.

These interceptors capture and trace various actions and events, such as handling activities, starting workflows, sending signals, and executing workflow events. By integrating OpenTelemetry tracing, you gain visibility into the behavior and performance of your Temporal applications.

OpenTelemetry Tracing Example

Get Started

Installation

Install the package using Composer:

Basic Setup

  1. Create a Pipeline Provider with Interceptors

  2. Apply Interceptors to Workflow Client and Worker

Available Interceptors

This package provides three specialized interceptors:

OpenTelemetryActivityInboundInterceptor

Traces the execution of activities. This interceptor creates spans when an activity is handled.

OpenTelemetryWorkflowClientCallsInterceptor

Focuses on tracing client-side workflow operations. This interceptor creates spans when calling start(), signalWithStart(), or updateWithStart() methods and propagates the context to the workflow execution.

OpenTelemetryWorkflowOutboundRequestInterceptor

Captures outbound requests made by workflows. This includes spans for activities execution, child workflows, timers, signals to external workflows, and other outbound operations. It provides comprehensive tracing of how workflows interact with other components in the system.

[!WARNING] This interceptor operates in blocking mode when sending telemetry, which may impact Workflow Worker bandwidth. Using a local collector is recommended to minimize network latency impact.

All versions of open-telemetry-interceptors with dependencies

PHP Build Version
Package Version
Requires php Version >=8.1
open-telemetry/sdk Version ^1.4
symfony/polyfill-php83 Version ^1.32
temporal/sdk Version ^2.17
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