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feat(appengine): Gradle on java21 helloworld (GoogleCloudPlatform#9499)
* chore: expperiment with using jdk 21 for appengine sample * feat: add appengine maven sample for jdk 21 * fix copyright * update maven-plugin version * modify pom.xml and remove index.jsp * remove project id * update shared-configurations * restore pom * restore appengine8 to main * Gradle 8 wrapper * test dir * Last Gretty * Gretty 4.1.5 (latest) * use the Gradle plugin * restoring java8 file * Gradle wrapper installed * Google header * updating appengine library versions --------- Co-authored-by: mpeddada1 <mpeddada@google.com>
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‎appengine-java21/helloworld/README.md‎

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To use vist: https://YOUR-PROJECT-ID.appspot.com
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## Testing
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### Testing
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mvn verify
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As you add / modify the source code (`src/main/java/...`) it's very useful to add [unit testing](https://cloud.google.com/appengine/docs/java/tools/localunittesting)
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to (`src/main/test/...`). The following resources are quite useful:
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* [Junit4](http://junit.org/junit4/)
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* [Mockito](http://mockito.org/)
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* [Truth](http://google.github.io/truth/)
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## Gradle
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### Running locally
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./gradlew appengineRun
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To use vist: http://localhost:8080/
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### Deploying
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./gradlew appengineDeploy

‎appengine-java21/helloworld/build.gradle‎

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/*
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* Copyright 2024 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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apply plugin: 'java'
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apply plugin: 'war'
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buildscript {
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repositories {
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// gretty plugin is in Maven Central
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mavenCentral()
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}
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dependencies {
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classpath 'com.google.cloud.tools:appengine-gradle-plugin:2.8.1'
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classpath 'org.gretty:gretty:4.1.5'
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}
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}
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apply plugin: 'org.gretty'
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apply plugin: 'com.google.cloud.tools.appengine'
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repositories {
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mavenCentral()
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}
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appengine {
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deploy { // deploy configuration
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stopPreviousVersion = true // default - stop the current version
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promote = true // default - & make this the current version
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projectId = 'GCLOUD_CONFIG'
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version = 'GCLOUD_CONFIG'
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}
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}
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sourceSets {
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// In Gradle 8, the default location is app/src/java, which does not match
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// Maven's directory structure.
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main.java.srcDirs = ['src/main/java']
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main.resources.srcDirs = ['src/main/resources', 'src/main/webapp']
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test.java.srcDirs = ['src/test/java']
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}
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dependencies {
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implementation 'com.google.appengine:appengine-api-1.0-sdk:2.0.30'
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implementation 'jakarta.servlet:jakarta.servlet-api:6.1.0'
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// Test Dependencies
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testImplementation 'com.google.appengine:appengine-testing:2.0.30'
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testImplementation 'com.google.appengine:appengine-api-stubs:2.0.30'
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testImplementation 'com.google.appengine:appengine-tools-sdk:2.0.30'
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testImplementation 'com.google.truth:truth:1.1.5'
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testImplementation 'junit:junit:4.13.2'
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testImplementation 'org.mockito:mockito-core:4.11.0'
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}

‎appengine-java21/helloworld/gradle/libs.versions.toml‎

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# This file was generated by the Gradle 'init' task.
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# https://docs.gradle.org/current/userguide/platforms.html#sub::toml-dependencies-format
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[versions]
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guava = "33.2.1-jre"
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junit = "4.13.2"
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[libraries]
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guava = { module = "com.google.guava:guava", version.ref = "guava" }
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junit = { module = "junit:junit", version.ref = "junit" }

‎appengine-java21/helloworld/gradle/wrapper/gradle-wrapper.properties‎

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distributionBase=GRADLE_USER_HOME
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distributionPath=wrapper/dists
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distributionUrl=https\://services.gradle.org/distributions/gradle-8.10-bin.zip
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networkTimeout=10000
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validateDistributionUrl=true
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zipStoreBase=GRADLE_USER_HOME
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zipStorePath=wrapper/dists

‎appengine-java21/helloworld/gradlew‎

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