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Migrate to Cloud Code for IntelliJ

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This document describes how to migrate your IntelliJ-based App Engine project to Cloud Code for IntelliJ.

• If your project is Maven or Gradle based and uses the older App Engine SDK based plugins (e.g. com.google.appengine.appengine-maven-plugin and com.google.appengine:gradle-appengine-plugin), you should first migrate to the new gcloud CLI based Maven and Gradle plugins.

• The new plugin does not support Datanucleus enhancement. If you depend on this feature, you will have to manually configure Datanucleus (JDO, JPA) enhancement for your project to migrate to Cloud Code. You should use Objectify as your ORM layer when reading/writing to Datastore.

If you haven't already, install the plugin by doing the following:

• Ensure you have the supported IDE version, JetBrains IDE version 2022.3+ (such as IntelliJ Ultimate/Community, PyCharm Professional/Community, WebStorm, GoLand), on the PATH of your machine.
• Open IntelliJ IDEA (or any supported JetBrains IDE).
• Open the plugins marketplace window using File > Settings > Plugins. For Mac OS X, use IntelliJ IDEA > Preferences > Plugins.

• Search for the 'Cloud Code' plugin and install it.

  You may be prompted to restart your IDE to activate the plugin.

After installing the plugin, configure IntelliJ and your project to use the new plugin as follows:

1. When notified that the new plugin conflicts with the existing App Engine integration, click the link in the prompt.

2. In the following Disable Plugin prompt, select 'Disable and Restart' to disable the App Engine plugin and restart the IDE for the plugin configuration changes to take effect.

3. When notified that your project is in an old format, click the option to Convert your project to the new format.

4. You should delete your existing App Engine Server and Cloud instances and recreate them using the new gcloud CLI.

   1. Navigate to Settings > Build, Execution, Deployment > Application Servers.

   2. Select your App Engine Dev instances and click Delete (-).

   3. Click Add (+) and select Google App Engine Dev Server.

   4. Navigate to Settings > Build, Execution, Deployment > Clouds.

   5. Select your Google App Engine cloud instances and click Delete (-).

   6. Click Add (+) to configure an App Engine cloud deployment target.

5. If you have any App Engine local server run configurations, then you must update them to use the newly configured Application Server.

6. Navigate to Tools > Cloud Code > App Engine to see the list of actions available to you for running and deploying your application, or view the documentation for more information.

7. For Maven or Gradle-based projects, ensure that you are using the latest version of the Gradle and Maven App Engine plugins.

For IntelliJ-specific projects only (i.e., projects that have manually configured project settings with the old App Engine facet and are not synced from Gradle or Maven), update your App Engine dependencies.

Your App Engine dependencies are still configured as 'External Libraries' and provided by your old App Engine SDK installation. If you delete your App EngineSDK installation, your application will not compile.

To remove this dependency on the old App Engine SDK, configure your App Engine API dependencies using the App Engine Facet library import feature as follows:

1. Users of the old plugin's Datanucleus JDO/JPA enhancement feature need to port their applications to Maven or Gradle as Datanucleus enhancement is not supported by the Cloud Code plugin.

2. From the IntelliJ Project Structure UI, navigate to your App Engine Standard module's dependencies tab.

3. Remove all App Engine related libraries.

4. In the same Project Structure UI, navigate to your App Engine module's Google App Engine facet.

5. In the Libraries panel, select the App Engine dependencies you are using.

   This action will automatically retrieve these dependencies from Maven Central and add them to your module classpath.

6. Run locally and deploy to verify your new configuration is working.

7. At this point, you can safely delete your old App Engine SDK.

To submit feedback or report an issue in your IntelliJ IDE, go to

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Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2025-08-07 UTC.

[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["This guide explains the process of migrating App Engine projects from IntelliJ to Cloud Code for IntelliJ, focusing on necessary configurations and plugin installations."],["Cloud Code supports Java 8 runtimes, but due to the impending deprecation of Java 8 support for App Engine, it is disabled by default and creating new App Engine projects is discouraged."],["Before migrating, Maven or Gradle projects using older App Engine SDK plugins should switch to the new gcloud CLI-based plugins, as well as migrate from Datanucleus enhancement."],["Users must install the Cloud Code plugin, disable the old App Engine plugin, convert their project format, delete old App Engine server and cloud instances, and ensure they use the latest version of Gradle and Maven App Engine plugins."],["IntelliJ-specific projects must remove old App Engine SDK dependencies and use the App Engine Facet library import feature to retrieve necessary dependencies from Maven Central, allowing for deletion of the old App Engine SDK."]]],[]]

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