moved "property" calls on Jersey APIs (#1312)

- Mutating the client (which property calls do) after creation, changes the ClientConfig mode to RequestScoped. This forces Jersey to reinitialize the injection scope with each request, which degrades performance when many API calls are made

Author: dhensche

src/main/java/org/gitlab4j/api/GitLabApiClient.java

@@ -15,22 +15,9 @@
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
-import javax.net.ssl.HostnameVerifier;
-import javax.net.ssl.SSLContext;
-import javax.net.ssl.SSLEngine;
-import javax.net.ssl.SSLSession;
-import javax.net.ssl.TrustManager;
-import javax.net.ssl.X509ExtendedTrustManager;
-import javax.ws.rs.client.Client;
-import javax.ws.rs.client.ClientBuilder;
-import javax.ws.rs.client.Entity;
-import javax.ws.rs.client.Invocation;
-import javax.ws.rs.client.WebTarget;
-import javax.ws.rs.core.Form;
-import javax.ws.rs.core.MediaType;
-import javax.ws.rs.core.MultivaluedMap;
-import javax.ws.rs.core.Response;
-import javax.ws.rs.core.StreamingOutput;
+import javax.net.ssl.*;
+import javax.ws.rs.client.*;
+import javax.ws.rs.core.*;
 
 import org.gitlab4j.api.Constants.TokenType;
 import org.gitlab4j.api.GitLabApi.ApiVersion;
@@ -41,12 +28,7 @@
 import org.glassfish.jersey.client.ClientProperties;
 import org.glassfish.jersey.client.JerseyClientBuilder;
 import org.glassfish.jersey.jackson.JacksonFeature;
-import org.glassfish.jersey.media.multipart.BodyPart;
-import org.glassfish.jersey.media.multipart.Boundary;
-import org.glassfish.jersey.media.multipart.FormDataBodyPart;
-import org.glassfish.jersey.media.multipart.FormDataMultiPart;
-import org.glassfish.jersey.media.multipart.MultiPart;
-import org.glassfish.jersey.media.multipart.MultiPartFeature;
+import org.glassfish.jersey.media.multipart.*;
 import org.glassfish.jersey.media.multipart.file.FileDataBodyPart;
 import org.glassfish.jersey.media.multipart.file.StreamDataBodyPart;
 
@@ -72,9 +54,6 @@ public class GitLabApiClient implements AutoCloseable {
     private SSLContext openSslContext;
     private HostnameVerifier openHostnameVerifier;
     private Long sudoAsId;
-    private Integer connectTimeout;
-    private Integer readTimeout;
-
     /**
      * Construct an instance to communicate with a GitLab API server using the specified GitLab API version,
      * server URL, private token, and secret token.
@@ -259,6 +238,7 @@ public GitLabApiClient(
         // to use the features and services explicitly configured by gitlab4j
         clientConfig.property(ClientProperties.FEATURE_AUTO_DISCOVERY_DISABLE, true);
         clientConfig.property(ClientProperties.METAINF_SERVICES_LOOKUP_DISABLE, true);
+        clientConfig.property(ClientProperties.FOLLOW_REDIRECTS, true);
 
         clientConfig.register(JacksonJson.class);
         clientConfig.register(JacksonFeature.class);
@@ -304,8 +284,13 @@ void enableRequestResponseLogging(Logger logger, Level level, int maxEntityLengt
      * @param readTimeout the per request read timeout in milliseconds, can be null to use default
      */
     void setRequestTimeout(Integer connectTimeout, Integer readTimeout) {
-        this.connectTimeout = connectTimeout;
-        this.readTimeout = readTimeout;
+        clientConfig.property(ClientProperties.CONNECT_TIMEOUT, connectTimeout);
+        clientConfig.property(ClientProperties.READ_TIMEOUT, readTimeout);
+
+        // Recreate the Client instance if already created.
+        if (apiClient != null) {
+            createApiClient();
+        }
     }
 
     /**
@@ -855,7 +840,7 @@ protected Invocation.Builder invocation(URL url, MultivaluedMap<String, String>
             createApiClient();
         }
 
-        WebTarget target = apiClient.target(url.toExternalForm()).property(ClientProperties.FOLLOW_REDIRECTS, true);
+        WebTarget target = apiClient.target(url.toExternalForm());
         if (queryParams != null) {
             for (Map.Entry<String, List<String>> param : queryParams.entrySet()) {
                 target = target.queryParam(param.getKey(), param.getValue().toArray());
@@ -874,16 +859,6 @@ protected Invocation.Builder invocation(URL url, MultivaluedMap<String, String>
         // If sudo as ID is set add the Sudo header
         if (sudoAsId != null && sudoAsId.intValue() > 0) builder = builder.header(SUDO_HEADER, sudoAsId);
 
-        // Set the per request connect timeout
-        if (connectTimeout != null) {
-            builder.property(ClientProperties.CONNECT_TIMEOUT, connectTimeout);
-        }
-
-        // Set the per request read timeout
-        if (readTimeout != null) {
-            builder.property(ClientProperties.READ_TIMEOUT, readTimeout);
-        }
-
         return (builder);
     }