This is an automated email from the ASF dual-hosted git repository.
nfilotto pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/camel-spring-boot-examples.git
The following commit(s) were added to refs/heads/main by this push:
new eedf6a6 CAMEL-19308: Add a Spring Boot AOT basic example (#111)
eedf6a6 is described below
commit eedf6a6390dd8b6648b8302aec46286133a02d59
Author: Nicolas Filotto <essob...@users.noreply.github.com>
AuthorDate: Fri Jun 23 07:40:26 2023 +0200
CAMEL-19308: Add a Spring Boot AOT basic example (#111)
## Motivation
Illustrate thanks to an example how Spring Boot AOT can be leveraged to
create a native Camel Spring Boot application.
## Modifications:
* Add a new module called `aot-basic`
---
README.adoc | 4 +-
aot-basic/pom.xml | 150 +++++++++++++++++++++
aot-basic/readme.adoc | 78 +++++++++++
aot-basic/routes/demo-route.yaml | 8 ++
aot-basic/routes/my-route.xml | 33 +++++
.../src/main/java/sample/camel/Application.java | 37 +++++
aot-basic/src/main/java/sample/camel/MyBean.java | 42 ++++++
.../src/main/java/sample/camel/MyCamelRouter.java | 45 +++++++
.../src/main/resources/application.properties | 34 +++++
pom.xml | 3 +-
10 files changed, 432 insertions(+), 2 deletions(-)
diff --git a/README.adoc b/README.adoc
index 71b2ccb..d8521f8 100644
--- a/README.adoc
+++ b/README.adoc
@@ -27,12 +27,14 @@ readme's instructions.
=== Examples
// examples: START
-Number of Examples: 48 (0 deprecated)
+Number of Examples: 49 (0 deprecated)
[width="100%",cols="4,2,4",options="header"]
|===
| Example | Category | Description
+| link:aot-basic/readme.adoc[AOT Basic] (aot-basic) | | An example showing
how to leverage Spring Boot AOT to build a native Camel Spring Boot application
+
| link:azure/camel-example-spring-boot-azure-eventhubs/README.adoc[Spring Boot
Azure Eventhubs] (camel-example-spring-boot-azure-eventhubs) | | An example
showing how to work with Camel, Azure Event Hubs and Spring Boot
| link:azure/camel-example-spring-boot-azure-servicebus/README.adoc[Spring
Boot Azure Servicebus] (camel-example-spring-boot-azure-servicebus) | | An
example showing how to work with Camel, Azure Service Bus and Spring Boot
diff --git a/aot-basic/pom.xml b/aot-basic/pom.xml
new file mode 100644
index 0000000..f3150ae
--- /dev/null
+++ b/aot-basic/pom.xml
@@ -0,0 +1,150 @@
+<?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.springboot.example</groupId>
+ <artifactId>examples</artifactId>
+ <version>4.0.0-SNAPSHOT</version>
+ </parent>
+
+ <artifactId>camel-example-spring-boot-aot-basic</artifactId>
+ <name>Camel SB Examples :: AOT Basic</name>
+ <description>Example on how to leverage Spring Boot AOT in Camel Spring
Boot</description>
+
+ <properties>
+ <category>AOT</category>
+ <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+ </properties>
+
+ <dependencyManagement>
+ <dependencies>
+ <!-- Camel BOM -->
+ <dependency>
+ <groupId>org.apache.camel.springboot</groupId>
+ <artifactId>camel-spring-boot-bom</artifactId>
+ <version>${project.version}</version>
+ <type>pom</type>
+ <scope>import</scope>
+ </dependency>
+ </dependencies>
+ </dependencyManagement>
+
+ <dependencies>
+ <!-- Camel -->
+ <dependency>
+ <groupId>org.apache.camel.springboot</groupId>
+ <artifactId>camel-spring-boot-starter</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.camel.springboot</groupId>
+ <artifactId>camel-yaml-dsl-starter</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.camel.springboot</groupId>
+ <artifactId>camel-xml-io-dsl-starter</artifactId>
+ </dependency>
+ </dependencies>
+
+ <build>
+ <plugins>
+ <plugin>
+ <groupId>org.graalvm.buildtools</groupId>
+ <artifactId>native-maven-plugin</artifactId>
+ </plugin>
+ <plugin>
+ <groupId>org.springframework.boot</groupId>
+ <artifactId>spring-boot-maven-plugin</artifactId>
+ <version>${spring-boot-version}</version>
+ <executions>
+ <execution>
+ <goals>
+ <goal>repackage</goal>
+ </goals>
+ </execution>
+ </executions>
+ </plugin>
+ </plugins>
+ </build>
+ <profiles>
+ <profile>
+ <id>native</id>
+ <build>
+ <pluginManagement>
+ <plugins>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-jar-plugin</artifactId>
+ <configuration>
+ <archive>
+ <manifestEntries>
+
<Spring-Boot-Native-Processed>true</Spring-Boot-Native-Processed>
+ </manifestEntries>
+ </archive>
+ </configuration>
+ </plugin>
+ <plugin>
+ <groupId>org.springframework.boot</groupId>
+ <artifactId>spring-boot-maven-plugin</artifactId>
+ <configuration>
+ <image>
+
<builder>paketobuildpacks/builder:tiny</builder>
+ <env>
+ <BP_NATIVE_IMAGE>true</BP_NATIVE_IMAGE>
+ </env>
+ </image>
+ </configuration>
+ <executions>
+ <execution>
+ <id>process-aot</id>
+ <goals>
+ <goal>process-aot</goal>
+ </goals>
+ </execution>
+ </executions>
+ </plugin>
+ <plugin>
+ <groupId>org.graalvm.buildtools</groupId>
+ <artifactId>native-maven-plugin</artifactId>
+ <configuration>
+
<classesDirectory>${project.build.outputDirectory}</classesDirectory>
+ <metadataRepository>
+ <enabled>true</enabled>
+ </metadataRepository>
+ <requiredVersion>22.3</requiredVersion>
+ </configuration>
+ <executions>
+ <execution>
+ <id>add-reachability-metadata</id>
+ <goals>
+ <goal>add-reachability-metadata</goal>
+ </goals>
+ </execution>
+ </executions>
+ </plugin>
+ </plugins>
+ </pluginManagement>
+ </build>
+ </profile>
+ </profiles>
+</project>
diff --git a/aot-basic/readme.adoc b/aot-basic/readme.adoc
new file mode 100644
index 0000000..4401a8e
--- /dev/null
+++ b/aot-basic/readme.adoc
@@ -0,0 +1,78 @@
+== Camel with Spring Boot AOT
+
+This example shows how you can build and execute a native image by leveraging
Spring Boot AOT to launch
+Camel routes written in Java, XML and YAML in native mode.
+
+=== How to build
+
+To be able to build a GraalVM Native Image, you need to have GraalVM installed
on your local machine.
+
+1. So first, download it from
https://github.com/graalvm/graalvm-ce-builds/releases, choose Java 17 and the
archive corresponding to your platform.
+2. Then, sets the environment variable `JAVA_HOME` to the home directory of
GraalVM.
+3. Finally, install `native-image` with the command `$JAVA_HOME/bin/gu install
native-image`
+
+Once, the 3 steps done properly, you can build the application with the next
command:
+
+[source,console]
+----
+mvn -Pnative native:compile
+----
+
+Building a GraalVM Native Image is a relatively slow process, so be patient,
it should take a couple of minutes.
+
+=== How to run
+
+A GraalVM Native Image is a complete, platform-specific executable. At this
point, you don't need any Java Virtual
+Machine to launch your application.
+
+So just, launch the executable file created in the target directory as next:
+
+[source,console]
+----
+./target/camel-example-spring-boot-aot-basic
+----
+
+Your application will start in native mode. The output of the application
should be of the next type:
+
+[source]
+----
+ . ____ _ __ _ _
+ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
+( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
+ \\/ ___)| |_)| | | | | || (_| | ) ) ) )
+ ' |____| .__|_| |_|_| |_\__, | / / / /
+ =========|_|==============|___/=/_/_/_/
+ :: Spring Boot :: (v3.1.0)
+
+2023-06-22T20:22:57.135+02:00 INFO 12741 --- [ main]
sample.camel.Application : Starting AOT-processed Application
using Java 17.0.7 with PID 12741
(xxx/camel-spring-boot-examples/aot-basic/target/camel-example-spring-boot-aot-basic
started by yyy in xxx/camel-spring-boot-examples/aot-basic)
+2023-06-22T20:22:57.135+02:00 DEBUG 12741 --- [ main]
sample.camel.Application : Running with Spring Boot v3.1.0,
Spring v6.0.9
+2023-06-22T20:22:57.135+02:00 INFO 12741 --- [ main]
sample.camel.Application : No active profile set, falling back
to 1 default profile: "default"
+2023-06-22T20:22:57.155+02:00 DEBUG 12741 --- [ main]
o.a.c.i.h.DefaultHealthCheckRegistry : HealthCheckRepository with id
registry-health-check-repository successfully registered
+2023-06-22T20:22:57.251+02:00 INFO 12741 --- [ main]
o.a.c.impl.engine.AbstractCamelContext : Apache Camel 4.0.0-SNAPSHOT
(MyCamelNative) is starting
+2023-06-22T20:22:57.251+02:00 INFO 12741 --- [ main]
c.s.b.CamelSpringBootApplicationListener : Starting CamelMainRunController to
ensure the main thread keeps running
+2023-06-22T20:22:57.251+02:00 INFO 12741 --- [inRunController]
org.apache.camel.main.MainSupport : Apache Camel (Main) 4.0.0-SNAPSHOT
is starting
+2023-06-22T20:22:57.265+02:00 INFO 12741 --- [ main]
o.a.c.impl.engine.AbstractCamelContext : Routes startup (started:3)
+2023-06-22T20:22:57.266+02:00 INFO 12741 --- [ main]
o.a.c.impl.engine.AbstractCamelContext : Started helloJava (timer://java)
+2023-06-22T20:22:57.266+02:00 INFO 12741 --- [ main]
o.a.c.impl.engine.AbstractCamelContext : Started helloYAML (timer://yaml)
+2023-06-22T20:22:57.266+02:00 INFO 12741 --- [ main]
o.a.c.impl.engine.AbstractCamelContext : Started helloXML (timer://xml)
+2023-06-22T20:22:57.266+02:00 INFO 12741 --- [ main]
o.a.c.impl.engine.AbstractCamelContext : Apache Camel 4.0.0-SNAPSHOT
(MyCamelNative) started in 14ms (build:0ms init:0ms start:14ms)
+2023-06-22T20:22:57.266+02:00 INFO 12741 --- [ main]
sample.camel.Application : Started Application in 0.144 seconds
(process running for 0.159)
+2023-06-22T20:22:58.258+02:00 INFO 12741 --- [ - timer://java] helloJava
: Hello World From Java I am invoked 1 times at Thu
Jun 22 20:22:58 CEST 2023
+2023-06-22T20:22:58.269+02:00 INFO 12741 --- [ - timer://yaml]
demo-route.yaml:6 : Hello World from YAML at Thu Jun 22
20:22:58 CEST 2023
+2023-06-22T20:22:58.269+02:00 INFO 12741 --- [3 - timer://xml]
my-route.xml:30 : Hello World From XML at Thu Jun 22
20:22:58 CEST 2023
+----
+
+As you can see the application took only *159* milliseconds to fully start
while the exact same application in JVM mode
+starts in more than *2* seconds.
+
+For more details, please check the related
https://docs.spring.io/spring-boot/docs/current/reference/html/native-image.html[Spring
Boot documentation].
+
+=== 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/aot-basic/routes/demo-route.yaml b/aot-basic/routes/demo-route.yaml
new file mode 100644
index 0000000..b802980
--- /dev/null
+++ b/aot-basic/routes/demo-route.yaml
@@ -0,0 +1,8 @@
+- route:
+ id: helloYAML
+ from:
+ uri: timer://yaml?period=2000
+ steps:
+ - log:
+ message: "Hello World from YAML at ${header.CamelTimerFiredTime}"
+
diff --git a/aot-basic/routes/my-route.xml b/aot-basic/routes/my-route.xml
new file mode 100644
index 0000000..5515a2c
--- /dev/null
+++ b/aot-basic/routes/my-route.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+ Licensed to the Apache Software Foundation (ASF) under one or more
+ contributor license agreements. See the NOTICE file distributed with
+ this work for additional information regarding copyright ownership.
+ The ASF licenses this file to You under the Apache License, Version 2.0
+ (the "License"); you may not use this file except in compliance with
+ the License. You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+
+-->
+<routes xmlns="http://camel.apache.org/schema/spring";>
+
+ <!-- run this application with mvn spring-boot:run and then update and
save this file
+ to see live changes in Camel -->
+
+ <route id="helloXML">
+ <from uri="timer:xml?period=2000"/>
+ <transform>
+ <constant>Hello World From XML</constant>
+ </transform>
+ <log message="${body} at ${header.CamelTimerFiredTime}"/>
+ </route>
+
+</routes>
\ No newline at end of file
diff --git a/aot-basic/src/main/java/sample/camel/Application.java
b/aot-basic/src/main/java/sample/camel/Application.java
new file mode 100644
index 0000000..32322d9
--- /dev/null
+++ b/aot-basic/src/main/java/sample/camel/Application.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 sample.camel;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+//CHECKSTYLE:OFF
+
+/**
+ * A sample Spring Boot application that starts the Camel routes.
+ */
+@SpringBootApplication
+public class Application {
+
+ /**
+ * A main method to start this application.
+ */
+ public static void main(String[] args) {
+ SpringApplication.run(Application.class, args);
+ }
+}
+//CHECKSTYLE:ON
diff --git a/aot-basic/src/main/java/sample/camel/MyBean.java
b/aot-basic/src/main/java/sample/camel/MyBean.java
new file mode 100644
index 0000000..0630630
--- /dev/null
+++ b/aot-basic/src/main/java/sample/camel/MyBean.java
@@ -0,0 +1,42 @@
+/*
+ * 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 sample.camel;
+
+import org.springframework.aot.hint.annotation.Reflective;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+/**
+ * A bean that returns a message when you call the {@link #saySomething()}
method.
+ * <p/>
+ * Uses <tt>@Component("myBean")</tt> to register this bean with the name
<tt>myBean</tt>
+ * that we use in the Camel route to lookup this bean.
+ */
+@Component("myBean")
+public class MyBean {
+
+ private int counter;
+
+ @Value("${greeting} From Java")
+ private String say;
+
+ @Reflective
+ public String saySomething() {
+ return String.format("%s I am invoked %d times", say, ++counter);
+ }
+
+}
diff --git a/aot-basic/src/main/java/sample/camel/MyCamelRouter.java
b/aot-basic/src/main/java/sample/camel/MyCamelRouter.java
new file mode 100644
index 0000000..aecdfc0
--- /dev/null
+++ b/aot-basic/src/main/java/sample/camel/MyCamelRouter.java
@@ -0,0 +1,45 @@
+/*
+ * 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 sample.camel;
+
+import org.apache.camel.builder.RouteBuilder;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+/**
+ * A simple Camel route that triggers from a timer and calls a bean and prints
to system out.
+ * <p/>
+ * Use <tt>@Component</tt> to make Camel auto-detect this route when starting.
+ */
+@Component
+public class MyCamelRouter extends RouteBuilder {
+
+ // we can use spring dependency injection
+ @Autowired
+ MyBean myBean;
+
+ @Override
+ public void configure() throws Exception {
+ // start from a timer
+ from("timer:java?period={{myPeriod}}").routeId("helloJava")
+ // and call the bean
+ .bean(myBean, "saySomething")
+ // and log it
+ .log("${body} at ${header.CamelTimerFiredTime}");
+ }
+
+}
diff --git a/aot-basic/src/main/resources/application.properties
b/aot-basic/src/main/resources/application.properties
new file mode 100644
index 0000000..b31e507
--- /dev/null
+++ b/aot-basic/src/main/resources/application.properties
@@ -0,0 +1,34 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements. See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License. You may obtain a copy of the License at
+##
+## http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+
+logging.level.org.springframework = INFO
+logging.level.org.apache.camel.spring.boot = INFO
+logging.level.org.apache.camel.health = DEBUG
+logging.level.org.apache.camel.impl.health = DEBUG
+logging.level.sample.camel = DEBUG
+
+camel.springboot.name = MyCamelNative
+
+camel.springboot.main-run-controller: true
+
+camel.springboot.routes-include-pattern:
file:${user.dir}/routes/*.yaml,file:${user.dir}/routes/*.xml
+
+# what to say
+greeting: Hello World
+
+# how often to trigger the timer (millis)
+myPeriod: 2000
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index 5fadca7..6f038c8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -38,8 +38,9 @@
<module>spring-boot</module>
<module>actuator-http-metrics</module>
<module>amqp</module>
+ <module>aot-basic</module>
<module>arangodb</module>
- <module>artemis</module>
+ <module>artemis</module>
<module>aws-secrets-manager</module>
<module>aws2-s3</module>
<module>dynamic-router-eip</module>
