INTSAMPLES-91 Transaction Synchronization Sample
INTSAMPLES-91 Initial Commit INTSAMPLES-91 Polishing INTSAMPLES-91 Add JDBC Activity
This commit is contained in:
Gary Russell
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/*
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* Copyright 2002-2012 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.integration.samples.advice;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.jdbc.core.JdbcTemplate;
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/**
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* @author Gary Russell
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* @since 2.2
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*
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*/
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public class ConditionalService {
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@Autowired
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private JdbcTemplate jdbcTemplate;
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private final Log logger = LogFactory.getLog(this.getClass());
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/**
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* If this service receives a payload 'fail.*' it throws an Exception.
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* @param payload
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*/
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public void failIfTextIsFail(String payload) {
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this.jdbcTemplate.update("insert into FOO values(?)", payload);
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if (payload.startsWith("fail")) {
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logger.info("Service failure for " + payload);
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throw new RuntimeException("Forced Exception");
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}
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logger.info("Service success for " + payload);
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}
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}
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/*
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* Copyright 2002-2012 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.integration.samples.advice;
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import org.apache.log4j.Logger;
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import org.springframework.context.support.AbstractApplicationContext;
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import org.springframework.context.support.ClassPathXmlApplicationContext;
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/**
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* @author Gary Russell
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* @since 2.2
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*
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*/
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public class TransactionSynchronizationDemo {
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private static final Logger LOGGER = Logger.getLogger(TransactionSynchronizationDemo.class);
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public static void main(String[] args) throws Exception {
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LOGGER.info("\n========================================================="
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+ "\n "
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+ "\n Welcome to Spring Integration! "
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+ "\n "
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+ "\n For more information please visit: "
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+ "\n http://www.springsource.org/spring-integration "
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+ "\n "
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+ "\n=========================================================" );
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final AbstractApplicationContext context =
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new ClassPathXmlApplicationContext("classpath:META-INF/spring/integration/transaction-synch-context.xml");
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context.registerShutdownHook();
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LOGGER.info("\n========================================================="
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+ "\n "
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+ "\n This is the Transaction Synchronization Sample - "
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+ "\n "
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+ "\n Press 'Enter' to terminate. "
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+ "\n "
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+ "\n Place a file in " + System.getProperty("java.io.tmpdir") + "/txSynchDemo ending "
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+ "\n with .txt "
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+ "\n If the first line begins with 'fail' the transaction "
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+ "\n transaction will be rolled back.The result of the "
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+ "\n expression evaluation is logged. "
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+ "\n "
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+ "\n=========================================================" );
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System.out.println(System.getProperty("java.io.tmpdir") + "/txSynchDir");
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System.in.read();
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System.exit(0);
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}
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}
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<?xml version="1.0" encoding="UTF-8"?>
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<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns="http://www.springframework.org/schema/beans"
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xmlns:int="http://www.springframework.org/schema/integration"
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xmlns:int-stream="http://www.springframework.org/schema/integration/stream"
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xmlns:context="http://www.springframework.org/schema/context"
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xmlns:int-file="http://www.springframework.org/schema/integration/file"
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xmlns:jdbc="http://www.springframework.org/schema/jdbc"
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xmlns:int-jdbc="http://www.springframework.org/schema/integration/jdbc"
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xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc.xsd
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http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration.xsd
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http://www.springframework.org/schema/integration/file http://www.springframework.org/schema/integration/file/spring-integration-file.xsd
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http://www.springframework.org/schema/integration/jdbc http://www.springframework.org/schema/integration/jdbc/spring-integration-jdbc-2.2.xsd
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http://www.springframework.org/schema/integration/stream http://www.springframework.org/schema/integration/stream/spring-integration-stream.xsd
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http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
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http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
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<context:annotation-config />
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<context:property-placeholder />
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<int-file:inbound-channel-adapter
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channel="inputChannel"
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auto-create-directory="true"
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filename-pattern="*.txt"
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directory="${java.io.tmpdir}/txSynchDemo/">
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<int:poller fixed-delay="500">
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<int:transactional transaction-manager="txManager" synchronization-factory="syncFactory" />
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</int:poller>
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</int-file:inbound-channel-adapter>
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<int:transaction-synchronization-factory id="syncFactory">
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<int:after-commit expression="payload.renameTo(payload.absolutePath + '.SUCCEEDED') ? payload + ' renamed after success' : payload + 'failed to rename after success'"
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channel="infoLogger" />
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<int:after-rollback expression="payload.renameTo(payload.absolutePath + '.FAILED') ? payload + ' renamed after faiure' : payload + 'failed to rename after failure'"
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channel="errorLogger" />
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</int:transaction-synchronization-factory>
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<int:channel id="inputChannel"/>
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<int-file:file-to-string-transformer input-channel="inputChannel" output-channel="toServiceChannel" />
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<int:service-activator input-channel="toServiceChannel"
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ref="conditionalService"
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method="failIfTextIsFail" />
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<int:logging-channel-adapter id="infoLogger" level="INFO" />
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<int:logging-channel-adapter id="errorLogger" level="ERROR" />
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<bean id="conditionalService" class="org.springframework.integration.samples.advice.ConditionalService" />
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<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
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<property name="dataSource" ref="dataSource" />
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</bean>
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<jdbc:embedded-database id="dataSource" type="H2">
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<jdbc:script location="classpath:table.sql" />
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</jdbc:embedded-database>
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<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
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<property name="dataSource" ref="dataSource" />
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</bean>
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<!-- Poll the database for rows -->
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<int-jdbc:inbound-channel-adapter channel="infoLogger"
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query="select BAR from FOO" data-source="dataSource">
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<int:poller fixed-delay="5000" />
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</int-jdbc:inbound-channel-adapter>
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</beans>
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44
intermediate/tx-synch/src/main/resources/log4j.xml
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44
intermediate/tx-synch/src/main/resources/log4j.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
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<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
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<!-- Appenders -->
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<appender name="console" class="org.apache.log4j.ConsoleAppender">
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<param name="Target" value="System.out" />
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<layout class="org.apache.log4j.PatternLayout">
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<param name="ConversionPattern" value="%d{HH:mm:ss.SSS} %-5p [%t][%c] %m%n" />
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</layout>
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</appender>
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<!-- Loggers -->
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<logger name="org.springframework">
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<level value="warn" />
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</logger>
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<logger name="org.springframework.integration.endpoint.SourcePollingChannelAdapter">
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<level value="warn" />
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</logger>
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<logger name="org.springframework.integration">
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<level value="warn" />
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</logger>
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<logger name="org.springframework.integration.handler.LoggingHandler">
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<level value="info" />
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</logger>
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<logger name="org.springframework.integration.samples">
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<level value="info" />
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</logger>
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<logger name="org.springframework.retry">
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<level value="warn" />
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</logger>
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<!-- Root Logger -->
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<root>
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<priority value="warn" />
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<appender-ref ref="console" />
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</root>
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</log4j:configuration>
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4
intermediate/tx-synch/src/main/resources/table.sql
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4
intermediate/tx-synch/src/main/resources/table.sql
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CREATE TABLE IF NOT EXISTS FOO (
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BAR VARCHAR(256)
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);
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