CAMEL-16300 - added a google pubsub example
diff --git a/examples/main-endpointdsl-google-pubsub/README.adoc b/examples/main-endpointdsl-google-pubsub/README.adoc
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+== Camel Example Google PubSub Endpoint DSL
+
+This example shows how to use the endpoint DSL in your Camel routes
+to define endpoints using type safe fluent builders, which are Java methods
+that are compiled.
+
+Notice how you can configure Camel in the `application.properties` file.
+
+=== Setting up the google pubsub topic
+
+- You'll need to
+ - Create a project and save the projectId
+ - Create a topic and save the name
+ - Create a subscription to that topic and save the subscription name
+
+- Update the application.properties accordingly
+
+=== Build
+
+First compile the example by executing:
+
+[source,sh]
+----
+$ mvn compile
+----
+
+=== How to run
+
+You can run this example using
+
+[source,sh]
+----
+$ mvn camel:run
+----
+
+=== Help and contributions
+
+If you hit any problem using Camel or have some feedback, then please
+https://camel.apache.org/support.html[let us know].
+
+We also love contributors, so
+https://camel.apache.org/contributing.html[get involved] :-)
+
+The Camel riders!
diff --git a/examples/main-endpointdsl-google-pubsub/pom.xml b/examples/main-endpointdsl-google-pubsub/pom.xml
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+++ b/examples/main-endpointdsl-google-pubsub/pom.xml
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+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+ 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>3.9.0-SNAPSHOT</version>
+ </parent>
+
+ <artifactId>camel-example-main-endpointdsl</artifactId>
+ <packaging>jar</packaging>
+ <name>Camel :: Example :: Main :: Endpoint DSL</name>
+ <description>An example for showing standalone Camel with Endpoint DSL</description>
+
+ <properties>
+ <category>Beginner</category>
+ </properties>
+
+ <dependencyManagement>
+ <dependencies>
+ <!-- Add Camel BOM -->
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-bom</artifactId>
+ <version>${camel.version}</version>
+ <type>pom</type>
+ <scope>import</scope>
+ </dependency>
+ </dependencies>
+ </dependencyManagement>
+
+ <dependencies>
+
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-main</artifactId>
+ </dependency>
+ <!-- we use the endpoint-dsl -->
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-endpointdsl</artifactId>
+ </dependency>
+ <!-- we use these 2 camel components in this example -->
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-google-pubsub</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-log</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-timer</artifactId>
+ </dependency>
+
+ <!-- logging -->
+ <dependency>
+ <groupId>ch.qos.logback</groupId>
+ <artifactId>logback-core</artifactId>
+ <version>${logback-version}</version>
+ </dependency>
+ <dependency>
+ <groupId>ch.qos.logback</groupId>
+ <artifactId>logback-classic</artifactId>
+ <version>${logback-version}</version>
+ </dependency>
+
+ </dependencies>
+
+ <build>
+ <plugins>
+ <!-- to run the application -->
+ <plugin>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-maven-plugin</artifactId>
+ <version>${camel.version}</version>
+ <configuration>
+ <mainClass>org.apache.camel.example.MyApplication</mainClass>
+ </configuration>
+ </plugin>
+ <plugin>
+ <groupId>org.codehaus.mojo</groupId>
+ <artifactId>exec-maven-plugin</artifactId>
+ <configuration>
+ <mainClass>org.apache.camel.example.MyApplication</mainClass>
+ </configuration>
+ </plugin>
+ </plugins>
+ </build>
+
+</project>
diff --git a/examples/main-endpointdsl-google-pubsub/src/main/java/org/apache/camel/example/MyApplication.java b/examples/main-endpointdsl-google-pubsub/src/main/java/org/apache/camel/example/MyApplication.java
new file mode 100644
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--- /dev/null
+++ b/examples/main-endpointdsl-google-pubsub/src/main/java/org/apache/camel/example/MyApplication.java
@@ -0,0 +1,38 @@
+/*
+ * 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;
+
+import org.apache.camel.main.Main;
+
+/**
+ * Main class that boot the Camel application
+ */
+public final class MyApplication {
+
+ private MyApplication() {
+ }
+
+ public static void main(String[] args) throws Exception {
+ // use Camels Main class
+ Main main = new Main();
+ // and add the routes (you can specify multiple classes)
+ main.configure().addRoutesBuilder(MyRouteBuilder.class);
+ // now keep the application running until the JVM is terminated (ctrl + c or sigterm)
+ main.run(args);
+ }
+
+}
diff --git a/examples/main-endpointdsl-google-pubsub/src/main/java/org/apache/camel/example/MyRouteBuilder.java b/examples/main-endpointdsl-google-pubsub/src/main/java/org/apache/camel/example/MyRouteBuilder.java
new file mode 100644
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--- /dev/null
+++ b/examples/main-endpointdsl-google-pubsub/src/main/java/org/apache/camel/example/MyRouteBuilder.java
@@ -0,0 +1,37 @@
+/*
+ * 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;
+
+import org.apache.camel.builder.endpoint.EndpointRouteBuilder;
+
+/**
+ * To use the endpoint DSL then we must extend EndpointRouteBuilder instead of RouteBuilder
+ */
+public class MyRouteBuilder extends EndpointRouteBuilder {
+
+ @Override
+ public void configure() throws Exception {
+ // the endpoint-dsl allows to define endpoints in type safe fluent builders
+ // here we configure the time and bean endpoint
+
+ from(timer("tick").repeatCount(5)).setBody(constant("Test"))
+ .to(googlePubsub("{{pubsubProjectId}}:{{pubsubTopicName}}").serviceAccountKey("{{pubsubServiceAccount}}")).startupOrder(2);
+
+ from(googlePubsub("{{pubsubProjectId}}:{{pubsubSubscriptionName}}").synchronousPull(true).serviceAccountKey("{{pubsubServiceAccount}}"))
+ .log("From Pubsub Subscription: ${body}").startupOrder(1);
+ }
+}
diff --git a/examples/main-endpointdsl-google-pubsub/src/main/resources/application.properties b/examples/main-endpointdsl-google-pubsub/src/main/resources/application.properties
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+++ b/examples/main-endpointdsl-google-pubsub/src/main/resources/application.properties
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+## ---------------------------------------------------------------------------
+## 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.
+## ---------------------------------------------------------------------------
+
+# to configure camel main
+# here you can configure options on camel main (see MainConfigurationProperties class)
+camel.main.name = Camel-google-pubsub
+
+# enable tracing
+### camel.main.tracing = true
+
+# you can also configure camel context directly
+# camel.context.shutdown-strategy.shutdown-now-on-timeout = false
+
+# you can configure whether OS environment should override (=2 which is default) or as fallback (=1)
+### camel.component.properties.environment-variable-mode=1
+
+# properties used in the route
+myPeriod = 1000
+pubsubServiceAccount = <service_account>
+pubsubProjectId = <projectId>
+pubsubTopicName = <topicName>
+pubsubSubscriptionName = <SubscriptionName>
+
+
+
diff --git a/examples/main-endpointdsl-google-pubsub/src/main/resources/logback.xml b/examples/main-endpointdsl-google-pubsub/src/main/resources/logback.xml
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index 0000000..a798d0b
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+++ b/examples/main-endpointdsl-google-pubsub/src/main/resources/logback.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+ 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.
+
+-->
+<configuration>
+ <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+ <encoder>
+ <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+ </encoder>
+ </appender>
+
+ <root level="INFO">
+ <appender-ref ref="STDOUT" />
+ </root>
+</configuration>
