You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@camel.apache.org by da...@apache.org on 2017/07/25 09:00:43 UTC

[2/3] camel git commit: CAMEL-11570: Added example for camel-google-pubsub

CAMEL-11570: Added example for camel-google-pubsub


Project: http://git-wip-us.apache.org/repos/asf/camel/repo
Commit: http://git-wip-us.apache.org/repos/asf/camel/commit/ab0b4ac5
Tree: http://git-wip-us.apache.org/repos/asf/camel/tree/ab0b4ac5
Diff: http://git-wip-us.apache.org/repos/asf/camel/diff/ab0b4ac5

Branch: refs/heads/master
Commit: ab0b4ac55b7d08863c11c18a56624074de40c5c4
Parents: b831203
Author: sarelp <sa...@yannitech.com>
Authored: Fri Jul 21 11:32:01 2017 +1000
Committer: Claus Ibsen <da...@apache.org>
Committed: Tue Jul 25 10:45:31 2017 +0200

----------------------------------------------------------------------
 .../camel-example-google-pubsub/README.adoc     |  72 +++++++
 examples/camel-example-google-pubsub/pom.xml    | 111 ++++++++++
 .../google/pubsub/CreateTopicSubscription.java  |  89 ++++++++
 .../google/pubsub/MessageConsumerClient.java    |  68 +++++++
 .../google/pubsub/MessagePublisherClient.java   |  86 ++++++++
 .../camel/example/google/pubsub/PubsubUtil.java |  56 +++++
 .../src/main/resources/META-INF/LICENSE.txt     | 203 +++++++++++++++++++
 .../src/main/resources/META-INF/NOTICE.txt      |  11 +
 .../src/main/resources/application.properties   |  40 ++++
 .../src/main/resources/log4j2.properties        |  23 +++
 10 files changed, 759 insertions(+)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/camel/blob/ab0b4ac5/examples/camel-example-google-pubsub/README.adoc
----------------------------------------------------------------------
diff --git a/examples/camel-example-google-pubsub/README.adoc b/examples/camel-example-google-pubsub/README.adoc
new file mode 100644
index 0000000..6528ca7
--- /dev/null
+++ b/examples/camel-example-google-pubsub/README.adoc
@@ -0,0 +1,72 @@
+# Camel Google Pubsub example
+
+### Introduction
+
+An example which shows how to integrate Camel with Google Pubsub.
+
+### Preparing Google Pubsub
+
+This example requires a Google Cloud Account with a Pubsub subscription.
+To create a Goolge Cloud account please visit https://cloud.google.com.
+To setup Pubsub subscription see https://cloud.google.com/pubsub/docs/overview
+
+A topic and subscription need to be created and the topic and subscription name
+set in the application.properties.
+
+The topic and subscription (with names as configured in application.properties) can be created within the
+Google Cloud Console or by running:
+
+    mvn compile exec:java -Ppubsub-create-topic-subscription
+
+
+In the application.properties you need to specify the
+
+For authenticating against Google Cloud one of the following options can be used:
+
+Using your default credentials::
+  Comment out  `credentials.fileLocation`, `credentials.account` and `credentials.key`
+Using a json service account credentials file::
+  Set `credentials.fileLocation` to the location of the json credentials file.
+  Comment out  `credentials.account` and `credentials.key`
+Using an account and key::
+  Set `credentials.account` to the service account email and `credentials.key` to the service account key.
+
+
+### Run
+
+Run the consumer and producer in separate shells:
+
+
+    mvn compile exec:java -Ppubsub-producer
+
+    mvn compile exec:java -Ppubsub-consumer
+
+Initially, some messages are sent programmatically.
+
+On the command prompt for the producer, type the messages. Each line is sent as one message to Google Pubsub.
+Press `Ctrl-C` to exit.
+
+As the pubsub channel is persistent the consumer and producer do not need to run at the same time.
+
+Messages can be send from the Google Pubsub console which will be picked up by the consumer.
+
+
+### Configuration
+
+You can configure the details in the file:
+  `src/main/resources/application.properties`
+
+You can enable verbose logging by adjusting the `src/main/resources/log4j2.properties`
+  file as documented in the file.
+
+
+### Forum, Help, etc
+
+If you hit an problems please let us know on the Camel Forums
+	<http://camel.apache.org/discussion-forums.html>
+
+Please help us make Apache Camel better - we appreciate any feedback you may
+have.  Enjoy!
+
+
+The Camel riders!

http://git-wip-us.apache.org/repos/asf/camel/blob/ab0b4ac5/examples/camel-example-google-pubsub/pom.xml
----------------------------------------------------------------------
diff --git a/examples/camel-example-google-pubsub/pom.xml b/examples/camel-example-google-pubsub/pom.xml
new file mode 100644
index 0000000..eb5e27c
--- /dev/null
+++ b/examples/camel-example-google-pubsub/pom.xml
@@ -0,0 +1,111 @@
+<?xml version="1.0"?>
+<!--
+
+    Licensed to the Apache Software Foundation (ASF) under one or more
+    contributor license agreements.  See the NOTICE file distributed with
+    this work for additional information regarding copyright ownership.
+    The ASF licenses this file to You 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 xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.apache.camel.example</groupId>
+    <artifactId>examples</artifactId>
+    <version>2.20.0-SNAPSHOT</version>
+  </parent>
+
+  <artifactId>camel-example-google-pubsub</artifactId>
+  <name>Camel :: Example :: Google-Pubsub</name>
+  <description>An example for Google Pubsub</description>
+
+  <properties>
+    <category>Messaging</category>
+  </properties>
+
+  <dependencies>
+
+    <!-- camel -->
+    <dependency>
+      <groupId>org.apache.camel</groupId>
+      <artifactId>camel-core</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.camel</groupId>
+      <artifactId>camel-google-pubsub</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.camel</groupId>
+      <artifactId>camel-stream</artifactId>
+    </dependency>
+
+    <!-- logging -->
+    <dependency>
+      <groupId>org.apache.logging.log4j</groupId>
+      <artifactId>log4j-api</artifactId>
+      <version>2.7</version>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.logging.log4j</groupId>
+      <artifactId>log4j-core</artifactId>
+      <version>2.7</version>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.logging.log4j</groupId>
+      <artifactId>log4j-slf4j-impl</artifactId>
+      <version>2.7</version>
+    </dependency>
+  </dependencies>
+
+  <profiles>
+
+    <profile>
+      <id>pubsub-producer</id>
+      <properties>
+        <target.main.class>org.apache.camel.example.google.pubsub.MessagePublisherClient</target.main.class>
+      </properties>
+    </profile>
+
+    <profile>
+      <id>pubsub-consumer</id>
+      <properties>
+        <target.main.class>org.apache.camel.example.google.pubsub.MessageConsumerClient</target.main.class>
+      </properties>
+    </profile>
+
+    <profile>
+      <id>pubsub-create-topic-subscription</id>
+      <properties>
+        <target.main.class>org.apache.camel.example.google.pubsub.CreateTopicSubscription</target.main.class>
+      </properties>
+    </profile>
+  </profiles>
+
+  <build>
+    <plugins>
+      <!-- Allows the example to be run via 'mvn compile exec:java' -->
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>exec-maven-plugin</artifactId>
+        <configuration>
+          <mainClass>${target.main.class}</mainClass>
+          <includePluginDependencies>false</includePluginDependencies>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>

http://git-wip-us.apache.org/repos/asf/camel/blob/ab0b4ac5/examples/camel-example-google-pubsub/src/main/java/org/apache/camel/example/google/pubsub/CreateTopicSubscription.java
----------------------------------------------------------------------
diff --git a/examples/camel-example-google-pubsub/src/main/java/org/apache/camel/example/google/pubsub/CreateTopicSubscription.java b/examples/camel-example-google-pubsub/src/main/java/org/apache/camel/example/google/pubsub/CreateTopicSubscription.java
new file mode 100644
index 0000000..03071e8
--- /dev/null
+++ b/examples/camel-example-google-pubsub/src/main/java/org/apache/camel/example/google/pubsub/CreateTopicSubscription.java
@@ -0,0 +1,89 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.camel.example.google.pubsub;
+
+import java.util.Properties;
+
+import com.google.api.client.googleapis.json.GoogleJsonResponseException;
+import com.google.api.services.pubsub.Pubsub;
+import com.google.api.services.pubsub.model.Subscription;
+import com.google.api.services.pubsub.model.Topic;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public final class CreateTopicSubscription {
+    private static final Logger LOG = LoggerFactory.getLogger(CreateTopicSubscription.class);
+
+    private CreateTopicSubscription() {
+    }
+
+    public static void main(String[] args) throws Exception {
+        createTopicSubscriptionPair(10);
+    }
+
+    private static void createTopicSubscriptionPair(int ackDeadlineSeconds) throws Exception {
+        Properties properties = PubsubUtil.loadProperties();
+        String projectId = properties.getProperty("pubsub.projectId");
+        String topic = properties.getProperty("pubsub.topic");
+        String subscriptionName = properties.getProperty("pubsub.subscription");
+
+        String topicFullName = String.format("projects/%s/topics/%s",
+                projectId,
+                topic);
+
+        String subscriptionFullName = String.format("projects/%s/subscriptions/%s",
+                projectId,
+                subscriptionName);
+
+        Pubsub pubsub = PubsubUtil
+                .createConnectionFactory(properties)
+                .getDefaultClient();
+
+        try {
+            pubsub.projects()
+                    .topics()
+                    .create(topicFullName, new Topic())
+                    .execute();
+        } catch (GoogleJsonResponseException e) {
+            // 409 indicates that the resource is available already
+            if (409 == e.getStatusCode()) {
+                LOG.info("Topic " + topic + " already exist");
+            } else {
+                throw e;
+            }
+        }
+
+        try {
+            Subscription subscription = new Subscription()
+                    .setTopic(topicFullName)
+                    .setAckDeadlineSeconds(ackDeadlineSeconds);
+
+            pubsub.projects()
+                    .subscriptions()
+                    .create(subscriptionFullName, subscription)
+                    .execute();
+        } catch (GoogleJsonResponseException e) {
+            // 409 indicates that the resource is available already
+            if (409 == e.getStatusCode()) {
+                LOG.info("Subscription " + subscriptionName + " already exist");
+            } else {
+                throw e;
+            }
+        }
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/camel/blob/ab0b4ac5/examples/camel-example-google-pubsub/src/main/java/org/apache/camel/example/google/pubsub/MessageConsumerClient.java
----------------------------------------------------------------------
diff --git a/examples/camel-example-google-pubsub/src/main/java/org/apache/camel/example/google/pubsub/MessageConsumerClient.java b/examples/camel-example-google-pubsub/src/main/java/org/apache/camel/example/google/pubsub/MessageConsumerClient.java
new file mode 100644
index 0000000..ce6e93d
--- /dev/null
+++ b/examples/camel-example-google-pubsub/src/main/java/org/apache/camel/example/google/pubsub/MessageConsumerClient.java
@@ -0,0 +1,68 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.camel.example.google.pubsub;
+
+import org.apache.camel.CamelContext;
+import org.apache.camel.builder.RouteBuilder;
+import org.apache.camel.component.google.pubsub.GooglePubsubComponent;
+import org.apache.camel.component.properties.PropertiesComponent;
+import org.apache.camel.impl.DefaultCamelContext;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public final class MessageConsumerClient {
+
+    private static final Logger LOG = LoggerFactory.getLogger(MessageConsumerClient.class);
+
+    private MessageConsumerClient() {
+    }
+
+    public static void main(String[] args) throws Exception {
+
+        LOG.info("About to run Google-pubsub-camel integration...");
+
+        CamelContext camelContext = new DefaultCamelContext();
+
+        // setup google pubsub component
+        GooglePubsubComponent googlePubsub = PubsubUtil.createComponent();
+        camelContext.addComponent("google-pubsub", googlePubsub);
+
+        // Add route to send messages to Google pubsub
+
+        camelContext.addRoutes(new RouteBuilder() {
+            public void configure() {
+                PropertiesComponent pc = getContext().getComponent("properties", PropertiesComponent.class);
+                pc.setLocation("classpath:application.properties");
+
+                log.info("About to start route: Google Pubsub -> Log ");
+
+                from("google-pubsub:{{pubsub.projectId}}:{{pubsub.subscription}}?"
+                        + "maxMessagesPerPoll={{consumer.maxMessagesPerPoll}}&"
+                        + "concurrentConsumers={{consumer.concurrentConsumers}}")
+                        .routeId("FromGooglePubsub")
+                        .log("${body}");
+            }
+        });
+        camelContext.start();
+
+        // let it run for 5 minutes before shutting down
+        Thread.sleep(5 * 60 * 1000);
+
+        camelContext.stop();
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/camel/blob/ab0b4ac5/examples/camel-example-google-pubsub/src/main/java/org/apache/camel/example/google/pubsub/MessagePublisherClient.java
----------------------------------------------------------------------
diff --git a/examples/camel-example-google-pubsub/src/main/java/org/apache/camel/example/google/pubsub/MessagePublisherClient.java b/examples/camel-example-google-pubsub/src/main/java/org/apache/camel/example/google/pubsub/MessagePublisherClient.java
new file mode 100644
index 0000000..06ea9b3
--- /dev/null
+++ b/examples/camel-example-google-pubsub/src/main/java/org/apache/camel/example/google/pubsub/MessagePublisherClient.java
@@ -0,0 +1,86 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.camel.example.google.pubsub;
+
+import java.util.Calendar;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.apache.camel.CamelContext;
+import org.apache.camel.ProducerTemplate;
+import org.apache.camel.builder.RouteBuilder;
+import org.apache.camel.component.google.pubsub.GooglePubsubComponent;
+import org.apache.camel.component.properties.PropertiesComponent;
+import org.apache.camel.impl.DefaultCamelContext;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public final class MessagePublisherClient {
+
+    private static final Logger LOG = LoggerFactory.getLogger(MessagePublisherClient.class);
+
+    private MessagePublisherClient() {
+    }
+
+    public static void main(String[] args) throws Exception {
+
+        LOG.info("About to run Google-pubsub-camel integration...");
+
+        String testPubsubMessage = "Test Message from  MessagePublisherClient " + Calendar.getInstance().getTime();
+
+        CamelContext camelContext = new DefaultCamelContext();
+
+        // Add route to send messages to Google Pubsub
+
+        camelContext.addRoutes(new RouteBuilder() {
+            public void configure() {
+                PropertiesComponent pc = getContext().getComponent("properties", PropertiesComponent.class);
+                pc.setLocation("classpath:application.properties");
+
+                // setup google pubsub component
+                GooglePubsubComponent googlePubsub = PubsubUtil.createComponent();
+                camelContext.addComponent("google-pubsub", googlePubsub);
+
+                from("direct:googlePubsubStart").routeId("DirectToGooglePubsub")
+                        .to("google-pubsub:{{pubsub.projectId}}:{{pubsub.topic}}").log("${headers}");
+
+
+                // Takes input from the command line.
+
+                from("stream:in")
+                        .to("direct:googlePubsubStart");
+
+            }
+
+        });
+
+        ProducerTemplate producerTemplate = camelContext.createProducerTemplate();
+        camelContext.start();
+
+        Map<String, Object> headers = new HashMap<>();
+
+        producerTemplate.sendBodyAndHeaders("direct:googlePubsubStart", testPubsubMessage, headers);
+
+        LOG.info("Successfully published message to Pubsub.");
+        System.out.println("Enter text on the line below : [Press Ctrl-C to exit.] ");
+
+        Thread.sleep(5 * 60 * 1000);
+
+        camelContext.stop();
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/camel/blob/ab0b4ac5/examples/camel-example-google-pubsub/src/main/java/org/apache/camel/example/google/pubsub/PubsubUtil.java
----------------------------------------------------------------------
diff --git a/examples/camel-example-google-pubsub/src/main/java/org/apache/camel/example/google/pubsub/PubsubUtil.java b/examples/camel-example-google-pubsub/src/main/java/org/apache/camel/example/google/pubsub/PubsubUtil.java
new file mode 100644
index 0000000..7ebd4c8
--- /dev/null
+++ b/examples/camel-example-google-pubsub/src/main/java/org/apache/camel/example/google/pubsub/PubsubUtil.java
@@ -0,0 +1,56 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.camel.example.google.pubsub;
+
+import java.io.InputStream;
+import java.util.Properties;
+
+import org.apache.camel.component.google.pubsub.GooglePubsubComponent;
+import org.apache.camel.component.google.pubsub.GooglePubsubConnectionFactory;
+
+public interface PubsubUtil {
+
+    static GooglePubsubComponent createComponent() {
+        GooglePubsubComponent component = new GooglePubsubComponent();
+        Properties properties = loadProperties();
+        GooglePubsubConnectionFactory connectionFactory = createConnectionFactory(properties);
+        component.setConnectionFactory(connectionFactory);
+        return component;
+    }
+
+    static GooglePubsubConnectionFactory createConnectionFactory(Properties properties) {
+        GooglePubsubConnectionFactory connectionFactory = new GooglePubsubConnectionFactory();
+        connectionFactory.setCredentialsFileLocation(properties.getProperty("credentials.fileLocation"));
+        connectionFactory.setServiceAccount(properties.getProperty("credentials.account"));
+        connectionFactory.setServiceAccountKey(properties.getProperty("credentials.key"));
+        connectionFactory.setServiceURL(properties.getProperty("pubsub.serviceUrl"));
+        return connectionFactory;
+    }
+
+    static Properties loadProperties() {
+        Properties properties = new Properties();
+        InputStream fileIn = PubsubUtil.class.getClassLoader().getResourceAsStream("application.properties");
+        try {
+            properties.load(fileIn);
+
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+
+        return properties;
+    }
+}

http://git-wip-us.apache.org/repos/asf/camel/blob/ab0b4ac5/examples/camel-example-google-pubsub/src/main/resources/META-INF/LICENSE.txt
----------------------------------------------------------------------
diff --git a/examples/camel-example-google-pubsub/src/main/resources/META-INF/LICENSE.txt b/examples/camel-example-google-pubsub/src/main/resources/META-INF/LICENSE.txt
new file mode 100644
index 0000000..6b0b127
--- /dev/null
+++ b/examples/camel-example-google-pubsub/src/main/resources/META-INF/LICENSE.txt
@@ -0,0 +1,203 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   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.
+

http://git-wip-us.apache.org/repos/asf/camel/blob/ab0b4ac5/examples/camel-example-google-pubsub/src/main/resources/META-INF/NOTICE.txt
----------------------------------------------------------------------
diff --git a/examples/camel-example-google-pubsub/src/main/resources/META-INF/NOTICE.txt b/examples/camel-example-google-pubsub/src/main/resources/META-INF/NOTICE.txt
new file mode 100644
index 0000000..2e215bf
--- /dev/null
+++ b/examples/camel-example-google-pubsub/src/main/resources/META-INF/NOTICE.txt
@@ -0,0 +1,11 @@
+   =========================================================================
+   ==  NOTICE file corresponding to the section 4 d of                    ==
+   ==  the Apache License, Version 2.0,                                   ==
+   ==  in this case for the Apache Camel distribution.                    ==
+   =========================================================================
+
+   This product includes software developed by
+   The Apache Software Foundation (http://www.apache.org/).
+
+   Please read the different LICENSE files present in the licenses directory of
+   this distribution.

http://git-wip-us.apache.org/repos/asf/camel/blob/ab0b4ac5/examples/camel-example-google-pubsub/src/main/resources/application.properties
----------------------------------------------------------------------
diff --git a/examples/camel-example-google-pubsub/src/main/resources/application.properties b/examples/camel-example-google-pubsub/src/main/resources/application.properties
new file mode 100644
index 0000000..680832a
--- /dev/null
+++ b/examples/camel-example-google-pubsub/src/main/resources/application.properties
@@ -0,0 +1,40 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You 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.
+## ---------------------------------------------------------------------------
+
+# Consumer properties
+
+# No of simultaneous pull requests
+consumer.concurrentConsumers=1
+
+# Max number of messages per poll
+consumer.maxMessagesPerPoll=10
+
+# Pubsub service url. Defaults to google cloud default endpoint
+# pubsub.serviceUrl=localhost:8383
+
+pubsub.projectId=scg-bi-sandbox
+
+# Google Pubsub topic
+pubsub.topic=camel-google-pubsub-example
+# Google Pubsub subscription
+pubsub.subscription=camel-google-pubsub-example.sub
+
+
+#credentials.fileLocation=
+#credentials.account=test-account@camel-pubsub-component.iam.gserviceaccount.com
+#credentials.key=-----BEGIN PRIVATE KEY-----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\nvfN6cqJedRJiym1tTvtXjhip4QK
 BgQCjbnd3dLAYIOMsARKOj7rAjzDWVgFRIhOR\nUgPY+zCsgLp/ffKUqH2fhS9R6RAXosVeMBChn6kePVxxbVXjw18fGKdXgSjBXjQh\neyXjkKHe7gPT9MyuAk22tNpkAWcht5nR+mA8wLT23C0CYBblch7dDm+dc6QtLlHt\np4xuvHptPQKBgGBqAmdg3r4NgBJWcJB27WAR4Aamv1b1gbL04lMjAnSnMPjfyiAI\nlMHKIoaJtRxUSfE3mQk0cy4GmiZFVfKYgG7GdMcoGSJsmwrfANnqJzpddC1LviEk\nyGKC/mdmP4GVu2/gQ/J9hXR4J3cPzcrucRDu1NBh1t/NIFSxwKy+HeWBAoGATOoB\nKWPuN/zKTPxYOmWkM1lwV370cbWC1gJuMyDMYHLY0oV4s8O0E23/viHcY/NDxbcD\nLL1SPxwLtIoLQPzCeIUGxGTRxGdMS3GEfFumAp+rh4YPCdmlr1Xf7e7HFZQtvSeD\nQTRENmWafSKxw9v4cHqJxuUUn/rLrfgLXFYxm9UCgYEAwlPP5J4pr19rokKIoS00\nRLrIKipEmiQoo1ENP4efjuAFMMxLQnXnx1NusiVEHb5RUiHAEY5sm5OxyP1XN+RF\nch2BhWnx+4+quIsspNkc9qfQKS9Xvb/GulhRTS/NKQSBNjs+Qe80LxBcuHdFhf1y\nrskSCZARtDqGrfblLQo26Mg=\n-----END PRIVATE KEY-----
+

http://git-wip-us.apache.org/repos/asf/camel/blob/ab0b4ac5/examples/camel-example-google-pubsub/src/main/resources/log4j2.properties
----------------------------------------------------------------------
diff --git a/examples/camel-example-google-pubsub/src/main/resources/log4j2.properties b/examples/camel-example-google-pubsub/src/main/resources/log4j2.properties
new file mode 100644
index 0000000..d406a9f
--- /dev/null
+++ b/examples/camel-example-google-pubsub/src/main/resources/log4j2.properties
@@ -0,0 +1,23 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You 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.
+## ---------------------------------------------------------------------------
+
+appender.out.type = Console
+appender.out.name = out
+appender.out.layout.type = PatternLayout
+appender.out.layout.pattern = %d [%-15.15t] %-5p %-30.30c{1} - %m%n
+rootLogger.level = INFO
+rootLogger.appenderRef.out.ref = out