fix: use Gson instead of Jackson (#1661)

* use GSon instead of Jackson

* remove jackson2

* fix callback

Author: elharo

google-api-client-appengine/src/test/java/com/google/api/client/googleapis/extensions/appengine/auth/oauth2/AppIdentityCredentialTest.java

@@ -20,7 +20,7 @@
 import com.google.api.client.http.HttpRequest;
 import com.google.api.client.http.HttpTransport;
 import com.google.api.client.json.JsonFactory;
-import com.google.api.client.json.jackson2.JacksonFactory;
+import com.google.api.client.json.gson.GsonFactory;
 import com.google.api.client.testing.http.MockHttpTransport;
 import java.io.IOException;
 import java.util.Arrays;
@@ -72,7 +72,7 @@ public void testAppEngineCredentialWrapper() throws IOException {
     final Collection<String> emptyScopes = Collections.emptyList();
 
     HttpTransport transport = new MockHttpTransport();
-    JsonFactory jsonFactory = new JacksonFactory();
+    JsonFactory jsonFactory = new GsonFactory();
 
     MockAppIdentityService appIdentity = new MockAppIdentityService();
     appIdentity.setAccessTokenText(expectedAccessToken);
@@ -108,7 +108,7 @@ public void testAppEngineCredentialWrapperGetAccessToken() throws IOException {
     final String expectedAccessToken = "ExpectedAccessToken";
 
     HttpTransport transport = new MockHttpTransport();
-    JsonFactory jsonFactory = new JacksonFactory();
+    JsonFactory jsonFactory = new GsonFactory();
 
     MockAppIdentityService appIdentity = new MockAppIdentityService();
     appIdentity.setAccessTokenText(expectedAccessToken);
@@ -124,7 +124,7 @@ public void testAppEngineCredentialWrapperGetAccessToken() throws IOException {
   }
 
   public void testAppEngineCredentialWrapperNullTransportThrows() throws IOException {
-    JsonFactory jsonFactory = new JacksonFactory();
+    JsonFactory jsonFactory = new GsonFactory();
     try {
       new AppIdentityCredential.AppEngineCredentialWrapper(null, jsonFactory);
       fail();

google-api-client-jackson2/src/main/java/com/google/api/client/googleapis/notifications/json/jackson2/JacksonNotificationCallback.java

@@ -17,21 +17,21 @@
 import com.google.api.client.googleapis.notifications.TypedNotificationCallback;
 import com.google.api.client.googleapis.notifications.json.JsonNotificationCallback;
 import com.google.api.client.json.JsonFactory;
-import com.google.api.client.json.jackson2.JacksonFactory;
+import com.google.api.client.json.gson.GsonFactory;
 import com.google.api.client.util.Beta;
 
 /**
  * {@link Beta} <br>
  * A {@link TypedNotificationCallback} which uses an JSON content encoding with {@link
- * JacksonFactory#getDefaultInstance()}.
+ * GsonFactory#getDefaultInstance()}.
  *
  * <p>Must NOT be implemented in form of an anonymous class as this will break serialization.
  *
  * <p>Implementation should be thread-safe. <b>Example usage:</b>
  *
  * <pre>
  * static class MyNotificationCallback
- * extends GsonNotificationCallback{@literal <}ListResponse{@literal >} {
+ * extends JacksonNotificationCallback{@literal <}ListResponse{@literal >} {
  *
  * private static final long serialVersionUID = 1L;
  *
@@ -67,6 +67,6 @@ public abstract class JacksonNotificationCallback<T> extends JsonNotificationCal
 
   @Override
   protected JsonFactory getJsonFactory() {
-    return JacksonFactory.getDefaultInstance();
+    return GsonFactory.getDefaultInstance();
   }
 }

google-api-client/pom.xml

@@ -121,14 +121,9 @@
       <groupId>com.google.oauth-client</groupId>
       <artifactId>google-oauth-client</artifactId>
     </dependency>
-    <dependency>
-      <groupId>com.google.http-client</groupId>
-      <artifactId>google-http-client-jackson2</artifactId>
-    </dependency>
     <dependency>
       <groupId>com.google.http-client</groupId>
       <artifactId>google-http-client-gson</artifactId>
-      <scope>test</scope>
     </dependency>
     <dependency>
       <groupId>com.google.http-client</groupId>

google-api-client/src/main/java/com/google/api/client/googleapis/auth/oauth2/GoogleAuthorizationCodeTokenRequest.java

@@ -43,7 +43,7 @@
  * static void requestAccessToken() throws IOException {
  * try {
  * GoogleTokenResponse response =
- * new GoogleAuthorizationCodeTokenRequest(new NetHttpTransport(), new JacksonFactory(),
+ * new GoogleAuthorizationCodeTokenRequest(new NetHttpTransport(), new GsonFactory(),
  * "812741506391.apps.googleusercontent.com", "{client_secret}",
  * "4/P7q7W91a-oMsCeLvIaQm6bTrgtp7", "https://oauth2-login-demo.appspot.com/code")
  * .execute();

google-api-client/src/main/java/com/google/api/client/googleapis/auth/oauth2/GoogleRefreshTokenRequest.java

@@ -41,7 +41,7 @@
  * static void refreshAccessToken() throws IOException {
  * try {
  * TokenResponse response =
- * new GoogleRefreshTokenRequest(new NetHttpTransport(), new JacksonFactory(),
+ * new GoogleRefreshTokenRequest(new NetHttpTransport(), new GsonFactory(),
  * "tGzv3JOkF0XG5Qx2TlKWIA", "s6BhdRkqt3", "7Fjfp0ZBr1KtDRbnfVdmIw").execute();
  * System.out.println("Access token: " + response.getAccessToken());
  * } catch (TokenResponseException e) {

google-api-client/src/main/java/com/google/api/client/googleapis/json/package-info.java

@@ -113,7 +113,7 @@
  * headers.setApplicationName("Google-YouTubeSample/1.0");
  * headers.gdataVersion = "2";
  * JsonCParser parser = new JsonCParser();
- * parser.jsonFactory = new JacksonFactory();
+ * parser.jsonFactory = new GsonFactory();
  * transport.addParser(parser);
  * // insert authentication code...
  * return transport;

google-api-client/src/main/java/com/google/api/client/googleapis/notifications/TypedNotificationCallback.java

@@ -51,7 +51,7 @@
  *
  * {@literal @}Override
  * protected ObjectParser getObjectParser(Notification notification) throws IOException {
- * return new JsonObjectParser(new JacksonFactory());
+ * return new JsonObjectParser(new GsonFactory());
  * }
  *
  * {@literal @}Override

google-api-client/src/main/java/com/google/api/client/googleapis/notifications/json/JsonNotificationCallback.java

@@ -50,7 +50,7 @@
  *
  * {@literal @}Override
  * protected JsonFactory getJsonFactory() throws IOException {
- * return new JacksonFactory();
+ * return new GsonFactory();
  * }
  *
  * {@literal @}Override

google-api-client/src/main/java/com/google/api/client/googleapis/testing/auth/oauth2/MockGoogleCredential.java

@@ -6,7 +6,7 @@
 import com.google.api.client.http.HttpTransport;
 import com.google.api.client.json.Json;
 import com.google.api.client.json.JsonFactory;
-import com.google.api.client.json.jackson2.JacksonFactory;
+import com.google.api.client.json.gson.GsonFactory;
 import com.google.api.client.testing.http.MockHttpTransport;
 import com.google.api.client.testing.http.MockLowLevelHttpRequest;
 import com.google.api.client.testing.http.MockLowLevelHttpResponse;
@@ -84,7 +84,7 @@ public MockGoogleCredential build() {
         setClientAuthentication(new MockClientAuthentication());
       }
       if (getJsonFactory() == null) {
-        setJsonFactory(new JacksonFactory());
+        setJsonFactory(new GsonFactory());
       }
       return new MockGoogleCredential(this);
     }

google-api-client/src/main/java/com/google/api/client/googleapis/testing/auth/oauth2/MockTokenServerTransport.java

@@ -21,7 +21,7 @@
 import com.google.api.client.json.GenericJson;
 import com.google.api.client.json.Json;
 import com.google.api.client.json.JsonFactory;
-import com.google.api.client.json.jackson2.JacksonFactory;
+import com.google.api.client.json.gson.GsonFactory;
 import com.google.api.client.json.webtoken.JsonWebSignature;
 import com.google.api.client.testing.http.MockHttpTransport;
 import com.google.api.client.testing.http.MockLowLevelHttpRequest;
@@ -47,7 +47,7 @@ public class MockTokenServerTransport extends MockHttpTransport {
   private static final Logger LOGGER = Logger.getLogger(MockTokenServerTransport.class.getName());
 
   static final String EXPECTED_GRANT_TYPE = "urn:ietf:params:oauth:grant-type:jwt-bearer";
-  static final JsonFactory JSON_FACTORY = new JacksonFactory();
+  static final JsonFactory JSON_FACTORY = new GsonFactory();
   final String tokenServerUrl;
   Map<String, String> serviceAccounts = new HashMap<String, String>();
   Map<String, String> clients = new HashMap<String, String>();