retry service activator gateway

FileStoreRetryGateway.java

package org.springframework.integration.samples.advice.retry;


public interface FileStoreRetryGateway {

  boolean isExist(String id);

}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <modelVersion>4.0.0</modelVersion>
  <groupId>org.springframework.integration.samples</groupId>
  <artifactId>retry-and-more</artifactId>
  <version>2.2.0.BUILD-SNAPSHOT</version>
  <name>Retry and More Sample</name>
  <description>Retry and More Sample</description>
  <url>http://projects.spring.io/spring-integration</url>
  <organization>
    <name>SpringIO</name>
    <url>https://spring.io</url>
  </organization>
  <licenses>
    <license>
      <name>The Apache Software License, Version 2.0</name>
      <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
      <distribution>repo</distribution>
    </license>
  </licenses>
  <developers>
    <developer>
      <id>garyrussell</id>
      <name>Gary Russell</name>
      <email>[email protected]</email>
      <roles>
        <role>project lead</role>
      </roles>
    </developer>
    <developer>
      <id>markfisher</id>
      <name>Mark Fisher</name>
      <email>[email protected]</email>
      <roles>
        <role>project founder and lead emeritus</role>
      </roles>
    </developer>
    <developer>
      <id>ghillert</id>
      <name>Gunnar Hillert</name>
      <email>[email protected]</email>
    </developer>
    <developer>
      <id>abilan</id>
      <name>Artem Bilan</name>
      <email>[email protected]</email>
    </developer>
  </developers>
  <scm>
    <connection>scm:git:scm:git:git://github.com/spring-projects/spring-integration-samples.git</connection>
    <developerConnection>scm:git:scm:git:ssh://[email protected]:spring-projects/spring-integration-samples.git</developerConnection>
    <url>https://github.com/spring-projects/spring-integration-samples</url>
  </scm>
  <repositories>
    <repository>
      <id>repo.spring.io.milestone</id>
      <name>Spring Framework Maven Milestone Repository</name>
      <url>https://repo.spring.io/libs-milestone</url>
    </repository>
  </repositories>
  <dependencies>
    <dependency>
      <groupId>org.springframework.integration</groupId>
      <artifactId>spring-integration-stream</artifactId>
      <version>4.0.0.RELEASE</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.integration</groupId>
      <artifactId>spring-integration-ftp</artifactId>
      <version>4.0.0.RELEASE</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.hamcrest</groupId>
      <artifactId>hamcrest-all</artifactId>
      <version>1.3</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.integration</groupId>
      <artifactId>spring-integration-amqp</artifactId>
      <version>4.0.0.RELEASE</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>org.mockito</groupId>
      <artifactId>mockito-core</artifactId>
      <version>1.9.5</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>4.0.3.RELEASE</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.integration</groupId>
      <artifactId>spring-integration-file</artifactId>
      <version>4.0.0.RELEASE</version>
      <scope>compile</scope>
    </dependency>
  </dependencies>
</project>

retry-advice.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns="http://www.springframework.org/schema/beans"
       xmlns:int="http://www.springframework.org/schema/integration"
       xmlns:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration.xsd
                           http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

  <bean id="testService" class="org.springframework.integration.samples.advice.retry.TestService"/>
  <int:gateway
      service-interface="org.springframework.integration.samples.advice.retry.FileStoreRetryGateway"
      default-request-channel="process" error-channel="failedChannel"/>

  <int:channel id="process"/>
  <int:service-activator input-channel="process" ref="testService" method="isExist">
    <int:request-handler-advice-chain>
      <ref bean="retryAdvice"/>
    </int:request-handler-advice-chain>
  </int:service-activator>

  <bean id="retryAdvice"
        class="org.springframework.integration.handler.advice.RequestHandlerRetryAdvice"
        p:retryTemplate-ref="retryTemplate"/>

  <bean id="retryTemplate" class="org.springframework.retry.support.RetryTemplate">
    <property name="backOffPolicy">
      <bean class="org.springframework.retry.backoff.ExponentialBackOffPolicy"
            p:initialInterval="2000" p:multiplier="1"/>
    </property>
    <property name="retryPolicy">
      <bean class="org.springframework.retry.policy.SimpleRetryPolicy"
            p:maxAttempts="3"/>
    </property>
  </bean>

  <int:channel id="failedChannel"/>
  <int:transformer input-channel="failedChannel" expression="T(java.lang.Boolean).FALSE"/>
</beans>

TestService.java

package org.springframework.integration.samples.advice.retry;


import org.apache.log4j.Logger;

public class TestService {

  private static Logger logger = Logger.getLogger(TestService.class);

  private int count = 0;

  public boolean isExist(String id){
    logger.info("isExist call with id " + id + " count is " + count);
    if (count++ < 2){
      throw new RuntimeException("not found");

    }
    return true;
  }
}

TestServiceTest.java

package org.springframework.integration.samples.advice.retry;

import static junit.framework.Assert.assertTrue;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:META-INF/spring/integration/retry-advice.xml")
public class TestServiceTest {

  @Autowired
  private FileStoreRetryGateway gateway;

  @Test
  public void testProcess() throws Exception {
    boolean isExist = gateway.isExist("id");
    assertTrue(isExist);
  }
}