# Library Instrumentation for Apache Http client version 5.2 Provides OpenTelemetry instrumentation for [Apache Http Client 5.2](https://hc.apache.org/httpcomponents-client-5.2.x/). ## Quickstart ### Add these dependencies to your project Replace `OPENTELEMETRY_VERSION` with the [latest release](https://search.maven.org/search?q=g:io.opentelemetry.instrumentation%20AND%20a:opentelemetry-apache-httpclient-5.2). For Maven, add to your `pom.xml` dependencies: ```xml io.opentelemetry.instrumentation opentelemetry-apache-httpclient-5.2 OPENTELEMETRY_VERSION ``` For Gradle, add to your dependencies: ```groovy implementation("io.opentelemetry.instrumentation:opentelemetry-apache-httpclient-5.2:OPENTELEMETRY_VERSION") ``` ### Usage The instrumentation library provides the class `ApacheHttpClient5Telemetry` that has a builder method and allows the creation of an instance of the `HttpClientBuilder` to provide OpenTelemetry-based spans and context propagation: ```java import io.opentelemetry.api.OpenTelemetry; import io.opentelemetry.instrumentation.apachehttpclient.v5_2.ApacheHttpClient5Telemetry; import org.apache.hc.client5.http.classic.HttpClient; import org.apache.hc.client5.http.impl.classic.HttpClientBuilder; public class ApacheHttpClient5Configuration { private OpenTelemetry openTelemetry; public ApacheHttpClient5Configuration(OpenTelemetry openTelemetry) { this.openTelemetry = openTelemetry; } // creates a new http client builder for constructing http clients with open telemetry instrumentation public HttpClientBuilder createBuilder() { return ApacheHttpClient5Telemetry.builder(openTelemetry).build().newHttpClientBuilder(); } // creates a new http client with open telemetry instrumentation public HttpClient newHttpClient() { return ApacheHttpClient5Telemetry.builder(openTelemetry).build().newHttpClient(); } } ```