SEC-1490: Code for GAE Sample webapp

buildSrc/src/main/groovy/gae/GaePlugin.groovy

@@ -0,0 +1,26 @@
+package gae;
+
+import com.google.appengine.tools.admin.AppCfg
+import org.gradle.api.*;
+
+class GaePlugin implements Plugin<Project> {
+    public void apply(Project project) {
+        if (!project.hasProperty('appEngineSdkRoot')) {
+            println "'appEngineSdkRoot' must be set in gradle.properties"
+        }
+
+        System.setProperty('appengine.sdk.root', project.property('appEngineSdkRoot'))
+
+        File explodedWar = new File(project.buildDir, "gae-exploded")
+
+        project.task('gaeDeploy') << {
+            AppCfg.main("update", explodedWar.toString())
+        }
+
+        project.gaeDeploy.dependsOn project.war
+
+        project.war.doLast {
+          ant.unzip(src: project.war.archivePath, dest: explodedWar)
+        }
+    }
+}

buildSrc/src/main/resources/META-INF/gradle-plugins/gae.properties

@@ -0,0 +1 @@
+implementation-class=gae.GaePlugin