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commit d1b8cfcee5c2ac057d02feb0dc2e6c70fb68635d
Author: Claus Ibsen <claus.ib...@gmail.com>
AuthorDate: Sat Feb 6 15:54:06 2021 +0100
add routes loader java example
---
examples/camel-example-routeloader/pom.xml | 114 +++++++++++++++++++++
examples/camel-example-routeloader/readme.adoc | 29 ++++++
.../org/apache/camel/example/MyApplication.java | 39 +++++++
.../src/main/resources/application.properties | 24 +++++
.../src/main/resources/logback.xml | 30 ++++++
.../main/resources/myroutes/MyRouteBuilder.java | 17 +++
examples/pom.xml | 1 +
7 files changed, 254 insertions(+)
diff --git a/examples/camel-example-routeloader/pom.xml
b/examples/camel-example-routeloader/pom.xml
new file mode 100644
index 0000000..9d612bd
--- /dev/null
+++ b/examples/camel-example-routeloader/pom.xml
@@ -0,0 +1,114 @@
+<?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>3.8.0-SNAPSHOT</version>
+ </parent>
+
+ <artifactId>camel-example-routeloader</artifactId>
+ <packaging>jar</packaging>
+ <name>Camel :: Example :: Route Loader</name>
+ <description>Example loading and compiling Java routes on
startup</description>
+
+ <properties>
+ <category>Beginner</category>
+ </properties>
+
+ <dependencyManagement>
+ <dependencies>
+ <!-- Add Camel BOM -->
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-bom</artifactId>
+ <version>${camel.version}</version>
+ <type>pom</type>
+ <scope>import</scope>
+ </dependency>
+ </dependencies>
+ </dependencyManagement>
+
+ <dependencies>
+
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-core</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-main</artifactId>
+ </dependency>
+ <!-- joor with java route loader -->
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-joor</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-timer</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-log</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-bean</artifactId>
+ </dependency>
+
+ <!-- logging -->
+ <dependency>
+ <groupId>org.apache.logging.log4j</groupId>
+ <artifactId>log4j-api</artifactId>
+ <version>${log4j2-version}</version>
+ <scope>runtime</scope>
+ </dependency>
+ <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>
+ <plugin>
+ <groupId>org.apache.camel</groupId>
+ <artifactId>camel-maven-plugin</artifactId>
+ <version>${camel.version}</version>
+ <configuration>
+ <logClasspath>false</logClasspath>
+ <mainClass>org.apache.camel.main.Main</mainClass>
+ </configuration>
+ </plugin>
+ </plugins>
+ </build>
+
+</project>
diff --git a/examples/camel-example-routeloader/readme.adoc
b/examples/camel-example-routeloader/readme.adoc
new file mode 100644
index 0000000..c62aed1
--- /dev/null
+++ b/examples/camel-example-routeloader/readme.adoc
@@ -0,0 +1,29 @@
+== Camel Example Route Loader with Java
+
+This example shows how Camel is capable of loading routes during startup using
the new route loader system.
+The route loader has support for loading routes in XML and Java (other
languages to be added).
+
+This is the feature that was first developed as part of Camel K which has
evolved to be a core
+part of Camel.
+
+The Java route loader is using `camel-joor` component which has the support
for dynamic compiling Java source.
+
+The example has a Java route in the `src/main/resources/myroutes` directory.
This route is a java file,
+but the file is not part of the regular source code and is therefore not
compiled with the regular Java compiler.
+The route is loaded by Camels route loader and dynamic compiled via
`camel-joor` during startup of Camel.
+
+=== How to run
+
+You can run this example using
+
+ 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/camel-example-routeloader/src/main/java/org/apache/camel/example/MyApplication.java
b/examples/camel-example-routeloader/src/main/java/org/apache/camel/example/MyApplication.java
new file mode 100644
index 0000000..6de6397
--- /dev/null
+++
b/examples/camel-example-routeloader/src/main/java/org/apache/camel/example/MyApplication.java
@@ -0,0 +1,39 @@
+/*
+ * 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.
+ *
+ * This class has been added to make it easy to run the application from a
Java editor.
+ * However you can start this application by running
org.apache.camel.main.Main directory (see Maven pom.xml)
+ */
+public final class MyApplication {
+
+ private MyApplication() {
+ }
+
+ public static void main(String[] args) throws Exception {
+ // use Camels Main class
+ Main main = new Main();
+ // now keep the application running until the JVM is terminated (ctrl
+ c or sigterm)
+ main.run(args);
+ }
+
+}
diff --git
a/examples/camel-example-routeloader/src/main/resources/application.properties
b/examples/camel-example-routeloader/src/main/resources/application.properties
new file mode 100644
index 0000000..6e2e9cf
--- /dev/null
+++
b/examples/camel-example-routeloader/src/main/resources/application.properties
@@ -0,0 +1,24 @@
+## ---------------------------------------------------------------------------
+## 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 = MyJavaLoader
+
+# which directory(s) to scan for routes which can be xml or java files
+camel.main.routes-include-pattern=classpath:myroutes/*.java
+
diff --git a/examples/camel-example-routeloader/src/main/resources/logback.xml
b/examples/camel-example-routeloader/src/main/resources/logback.xml
new file mode 100644
index 0000000..a798d0b
--- /dev/null
+++ b/examples/camel-example-routeloader/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>
diff --git
a/examples/camel-example-routeloader/src/main/resources/myroutes/MyRouteBuilder.java
b/examples/camel-example-routeloader/src/main/resources/myroutes/MyRouteBuilder.java
new file mode 100644
index 0000000..b4d1666
--- /dev/null
+++
b/examples/camel-example-routeloader/src/main/resources/myroutes/MyRouteBuilder.java
@@ -0,0 +1,17 @@
+import java.util.Random;
+
+import org.apache.camel.builder.RouteBuilder;
+
+public class MyRouteBuilder extends RouteBuilder {
+
+ @Override
+ public void configure() throws Exception {
+ from("timer:foo?period=2s")
+ .setBody(method(MyRouteBuilder.class, "randomNumber"))
+ .log("Random number ${body}");
+ }
+
+ public static int randomNumber() {
+ return new Random().nextInt(100);
+ }
+}
diff --git a/examples/pom.xml b/examples/pom.xml
index c7558a5..48e0056 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -144,6 +144,7 @@
<module>camel-example-pojo-messaging</module>
<module>camel-example-reactive-executor-vertx</module>
<module>camel-example-route-throttling</module>
+ <module>camel-example-routeloader</module>
<module>camel-example-routetemplate</module>
<module>camel-example-salesforce-consumer</module>
<module>camel-example-servlet-tomcat</module>
