Adding support for Okhttp

Author: maddymanu

pom.xml

@@ -5,7 +5,7 @@
 	<groupId>org.gitlab4j</groupId>
 	<artifactId>gitlab4j-api-cortex</artifactId>
 	<packaging>jar</packaging>
-	<version>4.20.3</version>
+	<version>4.20.4</version>
 	<name>GitLab4J-API - GitLab API Java Client</name>
 	<description>GitLab4J-API (gitlab4j-api) provides a full featured Java client library for working with GitLab repositories and servers via the GitLab REST API.</description>
 	<url>https://github.com/gitlab4j/gitlab4j-api</url>
@@ -462,6 +462,21 @@
 			<version>2.4</version>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.jboss.resteasy</groupId>
+			<artifactId>resteasy-client</artifactId>
+			<version>3.15.3.Final</version>
+		</dependency>
+		<dependency>
+			<groupId>net.ltgt.jaxrs</groupId>
+			<artifactId>resteasy-client-okhttp3</artifactId>
+			<version>1.1</version>
+		</dependency>
+		<dependency>
+			<groupId>com.squareup.okhttp3</groupId>
+			<artifactId>okhttp</artifactId>
+			<version>4.9.3</version>
+		</dependency>
 	</dependencies>
 
 	<dependencyManagement>

src/main/java/org/gitlab4j/api/http/OkHttpResteasyClientFactory.java

@@ -0,0 +1,30 @@
+package org.gitlab4j.api.http;
+
+import net.ltgt.resteasy.client.okhttp3.OkHttpClientEngine;
+import okhttp3.OkHttpClient;
+import org.gitlab4j.api.utils.JacksonJson;
+import org.glassfish.jersey.client.ClientProperties;
+import org.glassfish.jersey.jackson.JacksonFeature;
+import org.jboss.resteasy.client.jaxrs.ResteasyClient;
+import org.jboss.resteasy.plugins.providers.RegisterBuiltin;
+import org.jboss.resteasy.spi.ResteasyProviderFactory;
+import org.jboss.resteasy.client.jaxrs.internal.ClientConfiguration;
+import org.jboss.resteasy.client.jaxrs.ResteasyClientBuilder;
+
+public class OkHttpResteasyClientFactory {
+    public static ResteasyClient getClient(OkHttpClient client) {
+        ResteasyProviderFactory instance = ResteasyProviderFactory.getInstance();
+        instance.registerProvider(JacksonJson.class);
+        RegisterBuiltin.register(instance);
+
+        ClientConfiguration clientConfig = new ClientConfiguration(instance);
+        clientConfig.property(ClientProperties.FEATURE_AUTO_DISCOVERY_DISABLE, true);
+        clientConfig.property(ClientProperties.METAINF_SERVICES_LOOKUP_DISABLE, true);
+
+        return new ResteasyClientBuilder().providerFactory(instance)
+            .register(JacksonFeature.class)
+            .httpEngine(new OkHttpClientEngine(client))
+            .withConfig(clientConfig)
+            .build();
+    }
+}