Google Cloud Functions Codestart

devtools/platform-descriptor-json/src/main/resources/codestarts/quarkus/singleton-examples/google-cloud-functions-example/base/README.md

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+# Google Cloud Functions Integration examples
+
+Examples of Google Cloud HTTP and Background Functions for Quarkus.
+
+Guide: https://quarkus.io/guides/gcp-functions
+
+Two examples have been generated under `src/main/java/org/acme/googlecloudfunctions`, you must remove them before deploying to 
+Google Cloud Functions or setup multi-functions support, see https://quarkus.io/guides/gcp-functions#choose-your-function.
+
+> :warning: **INCOMPATIBLE WITH DEV MODE**: Google Cloud Functions is not compatible with dev mode yet!

devtools/platform-descriptor-json/src/main/resources/codestarts/quarkus/singleton-examples/google-cloud-functions-example/codestart.yml

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+name: google-cloud-functions-example
+ref: google-cloud-functions
+type: code
+tags:
+  - example
+  - singleton-example
+language:
+  base:
+    dependencies:
+      - io.quarkus:quarkus-google-cloud-functions

devtools/platform-descriptor-json/src/main/resources/codestarts/quarkus/singleton-examples/google-cloud-functions-example/java/src/main/java/org/acme/googlecloudfunctions/HelloWorldBackgroundFunction.java

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+package org.acme.googlecloudfunctions;
+
+import javax.enterprise.context.ApplicationScoped;
+
+import com.google.cloud.functions.BackgroundFunction;
+import com.google.cloud.functions.Context;
+
+@ApplicationScoped
+public class HelloWorldBackgroundFunction implements BackgroundFunction<HelloWorldBackgroundFunction.StorageEvent> {
+
+    @Override
+    public void accept(StorageEvent event, Context context) throws Exception {
+        System.out.println("Receive event on file: " + event.name);
+    }
+
+    public static class StorageEvent {
+        public String name;
+    }
+}

devtools/platform-descriptor-json/src/main/resources/codestarts/quarkus/singleton-examples/google-cloud-functions-example/java/src/main/java/org/acme/googlecloudfunctions/HelloWorldHttpFunction.java

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+package org.acme.googlecloudfunctions;
+
+import java.io.Writer;
+
+import javax.enterprise.context.ApplicationScoped;
+
+import com.google.cloud.functions.HttpFunction;
+import com.google.cloud.functions.HttpRequest;
+import com.google.cloud.functions.HttpResponse;
+
+@ApplicationScoped
+public class HelloWorldHttpFunction implements HttpFunction {
+
+    @Override
+    public void service(HttpRequest httpRequest, HttpResponse httpResponse) throws Exception {
+        Writer writer = httpResponse.getWriter();
+        writer.write("Hello World");
+    }
+}

extensions/google-cloud-functions/runtime/src/main/resources/META-INF/quarkus-extension.yaml

@@ -10,3 +10,4 @@ metadata:
   - "cloud"
   guide: "https://quarkus.io/guides/gcp-functions"
   status: "experimental"
+  codestart: google-cloud-functions