J8 samples (#665)

* j8-samples

Some bugs

* minor tweaks...

1. Fix guestbook-datastore to release API’s
2. Fix the rest to have 1.3.1 & runtime: java8

* add j8 suffix to artifactId

* Fix import order

* CheckStyle magic.

.mvn/wrapper/maven-wrapper.properties

@@ -1 +1 @@
-distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.3.9/apache-maven-3.3.9-bin.zip
+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.0/apache-maven-3.5.0-bin.zip

appengine-java8/README.md

@@ -0,0 +1,101 @@
+# Google App Engine Standard Environment Samples for Java 8
+
+This is a repository that contains Java code samples for [Google App Engine
+standard environment][ae-docs].
+
+[ae-docs]: https://cloud.google.com/appengine/docs/java/
+
+## Prerequisites
+
+### Download Maven
+
+These samples use the [Apache Maven][maven] build system. Before getting
+started, be sure to [download][maven-download] and [install][maven-install] it.
+When you use Maven as described here, it will automatically download the needed
+client libraries.
+
+[maven]: https://maven.apache.org
+[maven-download]: https://maven.apache.org/download.cgi
+[maven-install]: https://maven.apache.org/install.html
+
+### Create a Project in the Google Cloud Platform Console
+
+If you haven't already created a project, create one now. Projects enable you to
+manage all Google Cloud Platform resources for your app, including deployment,
+access control, billing, and services.
+
+1. Open the [Cloud Platform Console][cloud-console].
+1. In the drop-down menu at the top, select **Create a project**.
+1. Give your project a name.
+1. Make a note of the project ID, which might be different from the project
+   name. The project ID is used in commands and in configurations.
+
+[cloud-console]: https://console.cloud.google.com/
+
+
+## Samples
+
+### Hello World
+
+This sample demonstrates how to deploy an application on Google App Engine.
+
+- [Documentation][ae-docs]
+- [Code](helloworld)
+
+### Sending Email
+
+#### Sending Email with Mailgun
+
+This sample demonstrates how to send email using the [Mailgun API][mailgun-api].
+
+- [Documentation][mailgun-sample-docs]
+- [Code](mailgun)
+
+[mailgun-api]: https://documentation.mailgun.com/
+[mailgun-sample-docs]: https://cloud.google.com/appengine/docs/java/mail/mailgun
+
+#### Sending Email with SendGrid
+
+This sample demonstrates how to send email using the [SendGrid][sendgrid].
+
+- [Documentation][sendgrid-sample-docs]
+- [Code](sendgrid)
+
+[sendgrid]: https://sendgrid.com/docs/User_Guide/index.html
+[sendgrid-sample-docs]: https://cloud.google.com/appengine/docs/java/mail/sendgrid
+
+### Sending SMS with Twilio
+
+This sample demonstrates how to use [Twilio](https://www.twilio.com) on [Google
+App Engine standard environment][ae-docs].
+
+- [Documentation][twilio-sample-docs]
+- [Code](twilio)
+
+[twilio-sample-docs]: https://cloud.google.com/appengine/docs/java/sms/twilio
+
+### App Identity
+
+This sample demonstrates how to use the [App Identity API][appid] to discover
+the application's ID and assert identity to Google and third-party APIs.
+
+- [Documentation][appid]
+- [Code](appidentity)
+
+[appid]: https://cloud.google.com/appengine/docs/java/appidentity/
+
+### Other Samples
+
+- [Sample Applications][sample-apps]
+
+[sample-apps]: https://cloud.google.com/appengine/docs/java/samples
+
+
+## Contributing changes
+
+See [CONTRIBUTING.md](../CONTRIBUTING.md).
+
+## Licensing
+
+See [LICENSE](../LICENSE).
+

appengine-java8/analytics/pom.xml

@@ -0,0 +1,119 @@
+<!--
+ Copyright 2017 Google Inc.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<project>
+  <modelVersion>4.0.0</modelVersion>
+  <packaging>war</packaging>
+  <version>1.0-SNAPSHOT</version>
+  <groupId>com.example.appengine</groupId>
+  <artifactId>appengine-analytics-j8</artifactId>
+
+  <parent>
+    <artifactId>appengine-java8-samples</artifactId>
+    <groupId>com.google.cloud</groupId>
+    <version>1.0.0</version>
+    <relativePath>..</relativePath>
+  </parent>
+  <!-- Parent POM defines ${appengine.sdk.version} (updates frequently). -->
+
+  <properties>
+    <maven.compiler.target>1.8</maven.compiler.target>
+    <maven.compiler.source>1.8</maven.compiler.source>
+    <appengine.sdk.version>1.9.52</appengine.sdk.version>
+  </properties>
+
+  <dependencies>
+    <!-- Compile/runtime dependencies -->
+    <dependency>
+      <groupId>com.google.appengine</groupId>
+      <artifactId>appengine-api-1.0-sdk</artifactId>
+      <version>${appengine.sdk.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>jstl</groupId>
+      <artifactId>jstl</artifactId>
+      <version>1.2</version>
+    </dependency>
+
+    <dependency>
+      <groupId>org.apache.httpcomponents</groupId>
+      <artifactId>httpclient</artifactId>
+      <version>4.5.3</version>
+    </dependency>
+
+    <dependency>
+      <groupId>javax.servlet</groupId>
+      <artifactId>javax.servlet-api</artifactId>
+      <version>3.1.0</version>
+      <type>jar</type>
+      <scope>provided</scope>
+    </dependency>
+
+    <!-- Test Dependencies -->
+    <dependency>
+      <groupId>com.google.appengine</groupId>
+      <artifactId>appengine-testing</artifactId>
+      <version>${appengine.sdk.version}</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>com.google.appengine</groupId>
+      <artifactId>appengine-api-stubs</artifactId>
+      <version>${appengine.sdk.version}</version>
+      <scope>test</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.12</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.mockito</groupId>
+      <artifactId>mockito-core</artifactId>
+      <version>2.7.22</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>com.jcabi</groupId>
+      <artifactId>jcabi-matchers</artifactId>
+      <version>1.4</version>
+    </dependency>
+    <dependency>
+      <groupId>com.google.truth</groupId>
+      <artifactId>truth</artifactId>
+      <version>0.32</version>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <!-- for hot reload of the web application -->
+    <outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
+    <plugins>
+      <plugin>
+        <groupId>com.google.cloud.tools</groupId>
+        <artifactId>appengine-maven-plugin</artifactId>
+        <version>1.3.1</version>
+        <configuration>
+          <deploy.promote>true</deploy.promote>
+          <deploy.stopPreviousVersion>true</deploy.stopPreviousVersion>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+</project>

appengine-java8/analytics/src/main/java/com/example/appengine/analytics/AnalyticsServlet.java

@@ -0,0 +1,64 @@
+/**
+ * Copyright 2015 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.appengine.analytics;
+
+import com.google.appengine.api.urlfetch.URLFetchService;
+import com.google.appengine.api.urlfetch.URLFetchServiceFactory;
+
+import org.apache.http.client.utils.URIBuilder;
+
+import java.io.IOException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.URL;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+// [START example]
+@SuppressWarnings("serial")
+public class AnalyticsServlet extends HttpServlet {
+
+  @Override
+  public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException,
+      ServletException {
+    String trackingId = System.getenv("GA_TRACKING_ID");
+    URIBuilder builder = new URIBuilder();
+    builder.setScheme("http").setHost("www.google-analytics.com").setPath("/collect")
+        .addParameter("v", "1") // API Version.
+        .addParameter("tid", trackingId) // Tracking ID / Property ID.
+        // Anonymous Client Identifier. Ideally, this should be a UUID that
+        // is associated with particular user, device, or browser instance.
+        .addParameter("cid", "555")
+        .addParameter("t", "event") // Event hit type.
+        .addParameter("ec", "example") // Event category.
+        .addParameter("ea", "test action"); // Event action.
+    URI uri = null;
+    try {
+      uri = builder.build();
+    } catch (URISyntaxException e) {
+      throw new ServletException("Problem building URI", e);
+    }
+    URLFetchService fetcher = URLFetchServiceFactory.getURLFetchService();
+    URL url = uri.toURL();
+    fetcher.fetch(url);
+    resp.getWriter().println("Event tracked.");
+  }
+}
+// [END example]

appengine-java8/analytics/src/main/webapp/WEB-INF/appengine-web.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- [START_EXCLUDE] -->
+<!--
+  Copyright 2015 Google Inc.
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+        http://www.apache.org/licenses/LICENSE-2.0
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<!-- [END_EXCLUDE] -->
+<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
+  <threadsafe>true</threadsafe>
+  <runtime>java8</runtime>
+  <env-variables>
+    <env-var name="GA_TRACKING_ID" value="YOUR-GA-TRACKING-ID" />
+  </env-variables>
+</appengine-web-app>
+

appengine-java8/analytics/src/main/webapp/WEB-INF/web.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- [START_EXCLUDE] -->
+<!--
+  Copyright 2015 Google Inc.
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+        http://www.apache.org/licenses/LICENSE-2.0
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<!-- [END_EXCLUDE] -->
+<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee"
+  xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
+  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
+  version="2.5">
+  <servlet>
+    <servlet-name>analytics</servlet-name>
+    <servlet-class>com.example.appengine.analytics.AnalyticsServlet</servlet-class>
+  </servlet>
+  <servlet-mapping>
+    <servlet-name>analytics</servlet-name>
+    <url-pattern>/</url-pattern>
+  </servlet-mapping>
+</web-app>
+

appengine-java8/appidentity/README.md

@@ -0,0 +1,18 @@
+# App Identity sample for Google App Engine
+
+This sample demonstrates how to use the [App Identity API][appid] on [Google App
+Engine][ae-docs].
+
+[appid]: https://cloud.google.com/appengine/docs/java/appidentity/
+[ae-docs]: https://cloud.google.com/appengine/docs/java/
+
+## Running locally
+This example uses the
+[Maven Cloud SDK based plugin](https://cloud.google.com/appengine/docs/java/tools/using-maven).
+To run this sample locally:
+
+    $ mvn appengine:run
+
+## Deploying
+
+    $ mvn appengine:deploy