[Temp]: Add OkHTTP Caching to gitlab P1/2

Author: maddymanu

pom.xml

@@ -5,7 +5,7 @@
 	<groupId>org.gitlab4j</groupId>
 	<artifactId>gitlab4j-api-cortex</artifactId>
 	<packaging>jar</packaging>
-	<version>4.20.2</version>
+	<version>4.20.4-SNAPSHOT</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>

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

@@ -9,6 +9,7 @@
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import javax.ws.rs.client.Client;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
@@ -641,6 +642,10 @@ public void enableRequestResponseLogging(Logger logger, Level level, int maxEnti
         apiClient.enableRequestResponseLogging(logger, level, maxEntitySize, maskedHeaderNames);
     }
 
+    public void setApiClient(Client apiClient) {
+        this.apiClient.setApiClient(apiClient);
+    }
+
     /**
      * Sets up all future calls to the GitLab API to be done as another user specified by sudoAsUsername.
      * To revert back to normal non-sudo operation you must call unsudo(), or pass null as the username.

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

@@ -790,6 +790,10 @@ protected Client createApiClient() {
         return (apiClient);
     }
 
+    public void setApiClient(Client apiClient) {
+        this.apiClient = apiClient;
+    }
+
     protected Invocation.Builder invocation(URL url, MultivaluedMap<String, String> queryParams, String accept) {
 
         if (apiClient == null) {

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

@@ -6,9 +6,11 @@
 import java.util.Iterator;
 import java.util.List;
 import java.util.NoSuchElementException;
+import java.util.logging.Logger;
 import java.util.stream.Stream;
 import java.util.stream.StreamSupport;
 
+import javax.ws.rs.core.GenericType;
 import javax.ws.rs.core.MultivaluedMap;
 import javax.ws.rs.core.Response;
 
@@ -40,6 +42,7 @@
  * @param <T> the GitLab4J type contained in the List.
  */
 public class Pager<T> implements Iterator<List<T>>, Constants {
+    private final static Logger LOGGER = Logger.getLogger(Pager.class.getName());
 
     private int itemsPerPage;
     private int totalPages;
@@ -92,7 +95,7 @@ public class Pager<T> implements Iterator<List<T>>, Constants {
         Response response = api.get(Response.Status.OK, queryParams, pathArgs);
 
         try {
-            currentItems = mapper.readValue((InputStream) response.getEntity(), javaType);
+            currentItems = mapper.convertValue(response.readEntity(new GenericType<List<T>>() {}), javaType);
         } catch (Exception e) {
             throw new GitLabApiException(e);
         }