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commit 58edbb57b3887bb252493620d9e5b66883c60260 Author: Claus Ibsen <[email protected]> AuthorDate: Mon Nov 18 06:36:50 2019 +0100 CAMEL-13691: camel-resilience4j - WIP --- .../component/resilience4j/ResilienceReifier.java | 1 - examples/camel-example-resilience4j/README.adoc | 72 ++++++++ examples/camel-example-resilience4j/client/pom.xml | 93 ++++++++++ .../main/java/sample/camel/ClientApplication.java | 35 ++++ .../src/main/java/sample/camel/ClientRoute.java | 44 +++++ .../src/main/java/sample/camel/CounterBean.java | 30 +++ .../client/src/main/resources/META-INF/LICENSE.txt | 203 +++++++++++++++++++++ .../client/src/main/resources/META-INF/NOTICE.txt | 11 ++ .../client/src/main/resources/META-INF/beans.xml | 20 ++ .../src/main/resources/application.properties | 30 +++ .../client/src/main/resources/log4j2.properties | 25 +++ examples/camel-example-resilience4j/pom.xml | 46 +++++ .../camel-example-resilience4j/service1/pom.xml | 97 ++++++++++ .../java/sample/camel/Service1Application.java | 37 ++++ .../src/main/java/sample/camel/Service1Route.java | 33 ++++ .../src/main/resources/META-INF/LICENSE.txt | 203 +++++++++++++++++++++ .../src/main/resources/META-INF/NOTICE.txt | 11 ++ .../src/main/resources/application.properties | 25 +++ .../camel-example-resilience4j/service2/pom.xml | 109 +++++++++++ .../java/sample/camel/Service2Application.java | 34 ++++ .../src/main/java/sample/camel/Service2Route.java | 31 ++++ .../src/main/resources/META-INF/LICENSE.txt | 203 +++++++++++++++++++++ .../src/main/resources/META-INF/NOTICE.txt | 11 ++ .../service2/src/main/resources/log4j2.properties | 25 +++ examples/pom.xml | 1 + 25 files changed, 1429 insertions(+), 1 deletion(-) diff --git a/components/camel-resilience4j/src/main/java/org/apache/camel/component/resilience4j/ResilienceReifier.java b/components/camel-resilience4j/src/main/java/org/apache/camel/component/resilience4j/ResilienceReifier.java index 0e89786..c7d31d8 100644 --- a/components/camel-resilience4j/src/main/java/org/apache/camel/component/resilience4j/ResilienceReifier.java +++ b/components/camel-resilience4j/src/main/java/org/apache/camel/component/resilience4j/ResilienceReifier.java @@ -48,7 +48,6 @@ import static org.apache.camel.support.CamelContextHelper.mandatoryLookup; public class ResilienceReifier extends ProcessorReifier<CircuitBreakerDefinition> { // TODO: spring-boot allow to configure via resilience4j-spring-boot - // TODO: example // TODO: camel-main - configure hystrix/resilience/rest via java code fluent builder (does it work) public ResilienceReifier(CircuitBreakerDefinition definition) { diff --git a/examples/camel-example-resilience4j/README.adoc b/examples/camel-example-resilience4j/README.adoc new file mode 100644 index 0000000..6330443 --- /dev/null +++ b/examples/camel-example-resilience4j/README.adoc @@ -0,0 +1,72 @@ +== Resilience4j Example + +=== Introduction + +This example shows how to use Camel with Resilience4j EIP as circuit breaker +in Camel routes + +The example includes three sub maven modules that implement + +* client +* service1 +* service2 + +Where client -> service1 client -> service2 (fallback) + +=== Configuration + +Service1 is configured in the +`+src/main/java/sample/camel/Service1Application.java+` source code. +Service2 is configured in the +`+src/main/resources/application.properties+` properties file. + +=== Build + +You will need to compile this example first: + +[source,sh] +---- +$ mvn compile +---- + +=== Run the example + +Then using three different shells and run service1 and service2 before +the client. + +[source,sh] +---- +$ cd service1 +$ mvn compile spring-boot:run +---- + +When service1 is ready then start service2 + +[source,sh] +---- +$ cd service2 +$ mvn compile camel:run +---- + +And then start the client that calls service1 every second. + +[source,sh] +---- +$ cd client +$ mvn compile spring-boot:run +---- + +You can then stop service1 and see that the client should fallback to +call service2 in the Resilience EIP circuit breaker. And then start service +1 again and see the Resilience EIP go back to normal. + + +=== 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-resilience4j/client/pom.xml b/examples/camel-example-resilience4j/client/pom.xml new file mode 100644 index 0000000..d29fede --- /dev/null +++ b/examples/camel-example-resilience4j/client/pom.xml @@ -0,0 +1,93 @@ +<?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:xsi="http://www.w3.org/2001/XMLSchema-instance"; xmlns="http://maven.apache.org/POM/4.0.0"; + 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>camel-example-resilience4j</artifactId> + <version>3.0.0-SNAPSHOT</version> + </parent> + + <artifactId>camel-example-resilience4j-client</artifactId> + <name>Camel :: Example :: Resilience4j :: Client</name> + <description>An example showing how to use Resilience4j EIP as circuit breaker in Camel routes</description> + + <properties> + <spring.boot-version>${spring-boot-version}</spring.boot-version> + </properties> + + <!-- import Spring-Boot and Camel BOM --> + <dependencyManagement> + <dependencies> + <dependency> + <groupId>org.springframework.boot</groupId> + <artifactId>spring-boot-dependencies</artifactId> + <version>${spring.boot-version}</version> + <type>pom</type> + <scope>import</scope> + </dependency> + <dependency> + <groupId>org.apache.camel</groupId> + <artifactId>camel-spring-boot-dependencies</artifactId> + <version>${project.version}</version> + <type>pom</type> + <scope>import</scope> + </dependency> + </dependencies> + </dependencyManagement> + + <dependencies> + + <!-- spring-boot --> + <dependency> + <groupId>org.springframework.boot</groupId> + <artifactId>spring-boot-starter-web</artifactId> + </dependency> + + <!-- camel --> + <dependency> + <groupId>org.apache.camel</groupId> + <artifactId>camel-spring-boot-starter</artifactId> + </dependency> + <dependency> + <groupId>org.apache.camel</groupId> + <artifactId>camel-http-starter</artifactId> + </dependency> + <dependency> + <groupId>org.apache.camel</groupId> + <artifactId>camel-resilience4j-starter</artifactId> + </dependency> + + </dependencies> + + <build> + <plugins> + <plugin> + <groupId>org.springframework.boot</groupId> + <artifactId>spring-boot-maven-plugin</artifactId> + <version>${spring-boot-version}</version> + </plugin> + </plugins> + </build> + +</project> diff --git a/examples/camel-example-resilience4j/client/src/main/java/sample/camel/ClientApplication.java b/examples/camel-example-resilience4j/client/src/main/java/sample/camel/ClientApplication.java new file mode 100644 index 0000000..bda2eab --- /dev/null +++ b/examples/camel-example-resilience4j/client/src/main/java/sample/camel/ClientApplication.java @@ -0,0 +1,35 @@ +/* + * 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; + +/** + * A Spring Boot application that runs the Camel Resilience client application that calls service 1 and service 2 (as fallback) + */ +@SpringBootApplication +public class ClientApplication { + + /** + * A main method to start this application. + */ + public static void main(String[] args) { + SpringApplication.run(ClientApplication.class, args); + } + +} diff --git a/examples/camel-example-resilience4j/client/src/main/java/sample/camel/ClientRoute.java b/examples/camel-example-resilience4j/client/src/main/java/sample/camel/ClientRoute.java new file mode 100644 index 0000000..1edd6f6 --- /dev/null +++ b/examples/camel-example-resilience4j/client/src/main/java/sample/camel/ClientRoute.java @@ -0,0 +1,44 @@ +/* + * 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.stereotype.Component; + +@Component +public class ClientRoute extends RouteBuilder { + + @Override + public void configure() { + // you can configure the route rule with Java DSL here + from("timer:trigger?period=500").streamCaching() + .bean("counterBean") + .log(" Client request: ${body}") + .circuitBreaker() + // see application.properties how resilience is configured + .to("http://localhost:9090/service1";) + //.onFallback() + // we use a fallback without network that provides a response message immediately + // .transform().simple("Fallback ${body}") + .onFallback() + // we use fallback via network where we call a 2nd service + .to("http://localhost:7070/service2";) + .end() + .log("Client response: ${body}"); + } + +} diff --git a/examples/camel-example-resilience4j/client/src/main/java/sample/camel/CounterBean.java b/examples/camel-example-resilience4j/client/src/main/java/sample/camel/CounterBean.java new file mode 100644 index 0000000..e5dc4cd --- /dev/null +++ b/examples/camel-example-resilience4j/client/src/main/java/sample/camel/CounterBean.java @@ -0,0 +1,30 @@ +/* + * 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.stereotype.Component; + +@Component("counterBean") +public class CounterBean { + + private int counter; + + public String someMethod(String body) { + return "" + ++counter; + } + +} diff --git a/examples/camel-example-resilience4j/client/src/main/resources/META-INF/LICENSE.txt b/examples/camel-example-resilience4j/client/src/main/resources/META-INF/LICENSE.txt new file mode 100644 index 0000000..6b0b127 --- /dev/null +++ b/examples/camel-example-resilience4j/client/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. 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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. + +--> +<beans/> \ No newline at end of file diff --git a/examples/camel-example-resilience4j/client/src/main/resources/application.properties b/examples/camel-example-resilience4j/client/src/main/resources/application.properties new file mode 100644 index 0000000..c3a7ed9 --- /dev/null +++ b/examples/camel-example-resilience4j/client/src/main/resources/application.properties @@ -0,0 +1,30 @@ +## --------------------------------------------------------------------------- +## 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. +## --------------------------------------------------------------------------- + +server.port=8080 + +# configure resilience4j +# when we have more than 5 requests per 10 seconds that 50%+ fails +# then open circuit and call fallback immediately +// TODO: configure these +camel.resilience.sliding-window-type= +camel.hystrix.circuit-breaker-request-volume-threshold=5 +camel.hystrix.circuit-breaker-error-threshold-percentage=50 +camel.hystrix.metrics-rolling-percentile-window-in-milliseconds=10000 + +# resilience4j logging +#logging.level.org.apache.camel.component.resilience=DEBUG diff --git a/examples/camel-example-resilience4j/client/src/main/resources/log4j2.properties b/examples/camel-example-resilience4j/client/src/main/resources/log4j2.properties new file mode 100644 index 0000000..6f76518 --- /dev/null +++ b/examples/camel-example-resilience4j/client/src/main/resources/log4j2.properties @@ -0,0 +1,25 @@ +## --------------------------------------------------------------------------- +## 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.stdout.type = Console +appender.stdout.name = stdout +appender.stdout.layout.type = PatternLayout +appender.stdout.layout.pattern = %d [%-15.15t] %-5p %-30.30c{1} - %m%n +logger.zipkin.name = org.apache.camel.zipkin +logger.zipkin.level = DEBUG +rootLogger.level = INFO +rootLogger.appenderRef.stdout.ref = stdout diff --git a/examples/camel-example-resilience4j/pom.xml b/examples/camel-example-resilience4j/pom.xml new file mode 100644 index 0000000..4473c22 --- /dev/null +++ b/examples/camel-example-resilience4j/pom.xml @@ -0,0 +1,46 @@ +<?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:xsi="http://www.w3.org/2001/XMLSchema-instance"; xmlns="http://maven.apache.org/POM/4.0.0"; + 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>3.0.0-SNAPSHOT</version> + </parent> + + <artifactId>camel-example-resilience4j</artifactId> + <packaging>pom</packaging> + <name>Camel :: Example :: Resilience4j</name> + <description>An example showing how to use Resilience4j EIP as circuit breaker in Camel routes</description> + + <properties> + <category>EIP</category> + </properties> + + <modules> + <module>client</module> + <module>service1</module> + <module>service2</module> + </modules> + +</project> diff --git a/examples/camel-example-resilience4j/service1/pom.xml b/examples/camel-example-resilience4j/service1/pom.xml new file mode 100644 index 0000000..2875894 --- /dev/null +++ b/examples/camel-example-resilience4j/service1/pom.xml @@ -0,0 +1,97 @@ +<?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:xsi="http://www.w3.org/2001/XMLSchema-instance"; xmlns="http://maven.apache.org/POM/4.0.0"; + 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>camel-example-resilience4j</artifactId> + <version>3.0.0-SNAPSHOT</version> + </parent> + + <artifactId>camel-example-resilience4j-service1</artifactId> + <name>Camel :: Example :: Resilience4j :: Service 1</name> + <description>An example showing how to use Resilience4j EIP as circuit breaker in Camel routes</description> + + <properties> + <spring.boot-version>${spring-boot-version}</spring.boot-version> + </properties> + + <!-- import Spring-Boot and Camel BOM --> + <dependencyManagement> + <dependencies> + <dependency> + <groupId>org.springframework.boot</groupId> + <artifactId>spring-boot-dependencies</artifactId> + <version>${spring.boot-version}</version> + <type>pom</type> + <scope>import</scope> + </dependency> + <dependency> + <groupId>org.apache.camel</groupId> + <artifactId>camel-spring-boot-dependencies</artifactId> + <version>${project.version}</version> + <type>pom</type> + <scope>import</scope> + </dependency> + </dependencies> + </dependencyManagement> + + <dependencies> + + <!-- spring-boot --> + <dependency> + <groupId>org.springframework.boot</groupId> + <artifactId>spring-boot-starter</artifactId> + </dependency> + + <!-- camel --> + <dependency> + <groupId>org.apache.camel</groupId> + <artifactId>camel-spring-boot-starter</artifactId> + </dependency> + <dependency> + <groupId>org.apache.camel</groupId> + <artifactId>camel-resilience4j-starter</artifactId> + </dependency> + <dependency> + <groupId>org.apache.camel</groupId> + <artifactId>camel-jetty-starter</artifactId> + </dependency> + <dependency> + <groupId>org.apache.camel</groupId> + <artifactId>camel-http-starter</artifactId> + </dependency> + + </dependencies> + + <build> + <plugins> + <plugin> + <groupId>org.springframework.boot</groupId> + <artifactId>spring-boot-maven-plugin</artifactId> + <version>${spring-boot-version}</version> + </plugin> + </plugins> + </build> + +</project> diff --git a/examples/camel-example-resilience4j/service1/src/main/java/sample/camel/Service1Application.java b/examples/camel-example-resilience4j/service1/src/main/java/sample/camel/Service1Application.java new file mode 100644 index 0000000..0fd7a26 --- /dev/null +++ b/examples/camel-example-resilience4j/service1/src/main/java/sample/camel/Service1Application.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 Spring Boot application that runs Camel service 1 + */ +@SpringBootApplication +public class Service1Application { + + /** + * A main method to start this application. + */ + public static void main(String[] args) { + SpringApplication.run(Service1Application.class, args); + } + +} +//CHECKSTYLE:ON diff --git a/examples/camel-example-resilience4j/service1/src/main/java/sample/camel/Service1Route.java b/examples/camel-example-resilience4j/service1/src/main/java/sample/camel/Service1Route.java new file mode 100644 index 0000000..4d82ea0 --- /dev/null +++ b/examples/camel-example-resilience4j/service1/src/main/java/sample/camel/Service1Route.java @@ -0,0 +1,33 @@ +/* + * 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.stereotype.Component; + +@Component +public class Service1Route extends RouteBuilder { + + @Override + public void configure() throws Exception { + from("jetty:http://0.0.0.0:{{service1.port}}/service1";).routeId("service1").streamCaching() + .log("Service1 request: ${body}") + .transform(simple("Service1-${body}")) + .log("Service1 response: ${body}"); + } + +} diff --git a/examples/camel-example-resilience4j/service1/src/main/resources/META-INF/LICENSE.txt b/examples/camel-example-resilience4j/service1/src/main/resources/META-INF/LICENSE.txt new file mode 100644 index 0000000..6b0b127 --- /dev/null +++ b/examples/camel-example-resilience4j/service1/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. 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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. + diff --git a/examples/camel-example-resilience4j/service1/src/main/resources/META-INF/NOTICE.txt b/examples/camel-example-resilience4j/service1/src/main/resources/META-INF/NOTICE.txt new file mode 100644 index 0000000..2e215bf --- /dev/null +++ b/examples/camel-example-resilience4j/service1/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. diff --git a/examples/camel-example-resilience4j/service1/src/main/resources/application.properties b/examples/camel-example-resilience4j/service1/src/main/resources/application.properties new file mode 100644 index 0000000..94a862b --- /dev/null +++ b/examples/camel-example-resilience4j/service1/src/main/resources/application.properties @@ -0,0 +1,25 @@ +## --------------------------------------------------------------------------- +## 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. +## --------------------------------------------------------------------------- + +# the name of Camel +camel.springboot.name=Service1 +camel.springboot.main-run-controller=true + +# the port number the service will use for accepting incoming HTTP requests +service1.port=9090 +service2.port=7070 + diff --git a/examples/camel-example-resilience4j/service2/pom.xml b/examples/camel-example-resilience4j/service2/pom.xml new file mode 100644 index 0000000..82a5023 --- /dev/null +++ b/examples/camel-example-resilience4j/service2/pom.xml @@ -0,0 +1,109 @@ +<?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:xsi="http://www.w3.org/2001/XMLSchema-instance"; xmlns="http://maven.apache.org/POM/4.0.0"; + 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>camel-example-resilience4j</artifactId> + <version>3.0.0-SNAPSHOT</version> + </parent> + + <artifactId>camel-example-resilience4j-service2</artifactId> + <name>Camel :: Example :: Resilience4j :: Service 2</name> + <description>An example showing how to use Resilience4j EIP as circuit breaker in Camel routes</description> + + <!-- import Camel BOM --> + <dependencyManagement> + <dependencies> + <dependency> + <groupId>org.apache.camel</groupId> + <artifactId>camel-bom</artifactId> + <version>${project.version}</version> + <type>pom</type> + <scope>import</scope> + </dependency> + </dependencies> + </dependencyManagement> + + <dependencies> + + <!-- camel-core --> + <dependency> + <groupId>org.apache.camel</groupId> + <artifactId>camel-core</artifactId> + </dependency> + <dependency> + <groupId>org.apache.camel</groupId> + <artifactId>camel-main</artifactId> + </dependency> + <dependency> + <groupId>org.apache.camel</groupId> + <artifactId>camel-resilience4j</artifactId> + </dependency> + <dependency> + <groupId>org.apache.camel</groupId> + <artifactId>camel-undertow</artifactId> + </dependency> + + </dependencies> + + <build> + + <plugins> + <!-- allows the routes to be run via 'mvn camel:run' --> + <plugin> + <groupId>org.apache.camel</groupId> + <artifactId>camel-maven-plugin</artifactId> + <version>${project.version}</version> + <configuration> + <mainClass>sample.camel.Service2Application</mainClass> + </configuration> + <dependencies> + <!-- logging --> + <dependency> + <groupId>org.apache.logging.log4j</groupId> + <artifactId>log4j-api</artifactId> + <version>${log4j2-version}</version> + </dependency> + <dependency> + <groupId>org.apache.logging.log4j</groupId> + <artifactId>log4j-core</artifactId> + <version>${log4j2-version}</version> + </dependency> + <dependency> + <groupId>org.apache.logging.log4j</groupId> + <artifactId>log4j-slf4j-impl</artifactId> + <version>${log4j2-version}</version> + </dependency> + <dependency> + <groupId>org.apache.logging.log4j</groupId> + <artifactId>log4j-1.2-api</artifactId> + <version>${log4j2-version}</version> + </dependency> + </dependencies> + </plugin> + </plugins> + + </build> + +</project> diff --git a/examples/camel-example-resilience4j/service2/src/main/java/sample/camel/Service2Application.java b/examples/camel-example-resilience4j/service2/src/main/java/sample/camel/Service2Application.java new file mode 100644 index 0000000..2fee2d9 --- /dev/null +++ b/examples/camel-example-resilience4j/service2/src/main/java/sample/camel/Service2Application.java @@ -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. + */ +package sample.camel; + +import org.apache.camel.main.Main; + +//CHECKSTYLE:OFF +/** + * A Java main that runs Camel service 2 + */ +public class Service2Application { + + public static void main(String[] args) throws Exception { + Main main = new Main(); + main.addRoutesBuilder(new Service2Route()); + main.run(); + } + +} +//CHECKSTYLE:ON \ No newline at end of file diff --git a/examples/camel-example-resilience4j/service2/src/main/java/sample/camel/Service2Route.java b/examples/camel-example-resilience4j/service2/src/main/java/sample/camel/Service2Route.java new file mode 100644 index 0000000..8e3ff80 --- /dev/null +++ b/examples/camel-example-resilience4j/service2/src/main/java/sample/camel/Service2Route.java @@ -0,0 +1,31 @@ +/* + * 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; + +public class Service2Route extends RouteBuilder { + + @Override + public void configure() throws Exception { + from("undertow:http://0.0.0.0:7070/service2";).routeId("service2").streamCaching() + .log(" Service2 request: ${body}") + .transform(simple("Service2-${body}")) + .log("Service2 response: ${body}"); + } + +} diff --git a/examples/camel-example-resilience4j/service2/src/main/resources/META-INF/LICENSE.txt b/examples/camel-example-resilience4j/service2/src/main/resources/META-INF/LICENSE.txt new file mode 100644 index 0000000..6b0b127 --- /dev/null +++ b/examples/camel-example-resilience4j/service2/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. 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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.stdout.type = Console +appender.stdout.name = stdout +appender.stdout.layout.type = PatternLayout +appender.stdout.layout.pattern = %d [%-15.15t] %-5p %-30.30c{1} - %m%n +logger.zipkin.name = org.apache.camel.zipkin +logger.zipkin.level = DEBUG +rootLogger.level = INFO +rootLogger.appenderRef.stdout.ref = stdout diff --git a/examples/pom.xml b/examples/pom.xml index 8a084ce..315e3bf 100644 --- a/examples/pom.xml +++ b/examples/pom.xml @@ -102,6 +102,7 @@ <module>camel-example-rabbitmq</module> <module>camel-example-reactive-executor-vertx</module> <module>camel-example-reactive-streams</module> + <module>camel-example-resilience4j</module> <module>camel-example-rest-producer</module> <module>camel-example-rest-swagger</module> <module>camel-example-route-throttling</module>
