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ComposedRunnerVisitorConfiguration.java
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/
ComposedRunnerVisitorConfiguration.java
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/*
* Copyright 2017-2018 the original author or authors.
*
* 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
*
* https://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.springframework.cloud.task.app.composedtaskrunner.configuration;
import org.springframework.batch.core.ExitStatus;
import org.springframework.batch.core.Step;
import org.springframework.batch.core.StepContribution;
import org.springframework.batch.core.StepExecution;
import org.springframework.batch.core.StepExecutionListener;
import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing;
import org.springframework.batch.core.configuration.annotation.StepBuilderFactory;
import org.springframework.batch.core.scope.context.ChunkContext;
import org.springframework.batch.core.step.tasklet.Tasklet;
import org.springframework.batch.repeat.RepeatStatus;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.cloud.task.app.composedtaskrunner.ComposedRunnerJobFactory;
import org.springframework.cloud.task.app.composedtaskrunner.ComposedRunnerVisitor;
import org.springframework.cloud.task.app.composedtaskrunner.properties.ComposedTaskProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.task.TaskExecutor;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.transaction.annotation.Isolation;
import org.springframework.transaction.interceptor.DefaultTransactionAttribute;
import org.springframework.transaction.interceptor.TransactionAttribute;
/**
* @author Glenn Renfro
* @author Ilayaperumal Gopinathan
*/
@Configuration
@EnableBatchProcessing
@EnableConfigurationProperties(ComposedTaskProperties.class)
public class ComposedRunnerVisitorConfiguration {
@Autowired
private StepBuilderFactory steps;
@Autowired
private ComposedTaskProperties composedTaskProperties;
@Bean
public ComposedRunnerJobFactory job() {
return new ComposedRunnerJobFactory(this.composedTaskProperties);
}
@Bean
public ComposedRunnerVisitor composedRunnerStack() {
return new ComposedRunnerVisitor();
}
@Bean
public TaskExecutor taskExecutor() {
ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor();
taskExecutor.setCorePoolSize(this.composedTaskProperties.getSplitThreadCorePoolSize());
taskExecutor.setMaxPoolSize(this.composedTaskProperties.getSplitThreadMaxPoolSize());
taskExecutor.setKeepAliveSeconds(this.composedTaskProperties.getSplitThreadKeepAliveSeconds());
taskExecutor.setAllowCoreThreadTimeOut(
this.composedTaskProperties.isSplitThreadAllowCoreThreadTimeout());
taskExecutor.setQueueCapacity(this.composedTaskProperties.getSplitThreadQueueCapacity());
taskExecutor.setWaitForTasksToCompleteOnShutdown(
this.composedTaskProperties.isSplitThreadWaitForTasksToCompleteOnShutdown());
return taskExecutor;
}
@Bean
public Step AAA_0() {
return createTaskletStep("AAA_0");
}
@Bean
public Step AAA_1() {
return createTaskletStep("AAA_1");
}
@Bean
public Step AAA_2() {
return createTaskletStep("AAA_2");
}
@Bean
public Step BBB_0() {
return createTaskletStep("BBB_0");
}
@Bean
public Step BBB_1() {
return createTaskletStep("BBB_1");
}
@Bean
public Step CCC_0() {
return createTaskletStep("CCC_0");
}
@Bean
public Step DDD_0() {
return createTaskletStep("DDD_0");
}
@Bean
public Step EEE_0() {
return createTaskletStep("EEE_0");
}
@Bean
public Step FFF_0() {
return createTaskletStep("FFF_0");
}
@Bean
public Step LABELA() {
return createTaskletStep("LABELA");
}
@Bean
public Step failedStep_0() {
return createTaskletStepWithListener("failedStep_0",
failedStepExecutionListener());
}
@Bean
public Step successStep() {
return createTaskletStepWithListener("successStep",
successStepExecutionListener());
}
@Bean
public StepExecutionListener failedStepExecutionListener() {
return new StepExecutionListener() {
@Override
public void beforeStep(StepExecution stepExecution) {
}
@Override
public ExitStatus afterStep(StepExecution stepExecution) {
return ExitStatus.FAILED;
}
};
}
@Bean
public StepExecutionListener successStepExecutionListener() {
return new StepExecutionListener() {
@Override
public void beforeStep(StepExecution stepExecution) {
}
@Override
public ExitStatus afterStep(StepExecution stepExecution) {
return ExitStatus.COMPLETED;
}
};
}
private Step createTaskletStepWithListener(final String taskName,
StepExecutionListener stepExecutionListener) {
return this.steps.get(taskName)
.tasklet(new Tasklet() {
@Override
public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {
return RepeatStatus.FINISHED;
}
})
.transactionAttribute(getTransactionAttribute())
.listener(stepExecutionListener)
.build();
}
private Step createTaskletStep(final String taskName) {
return this.steps.get(taskName)
.tasklet(new Tasklet() {
@Override
public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {
return RepeatStatus.FINISHED;
}
})
.transactionAttribute(getTransactionAttribute())
.build();
}
/**
* Using the default transaction attribute for the job will cause the
* TaskLauncher not to see the latest state in the database but rather
* what is in its transaction. By setting isolation to READ_COMMITTED
* The task launcher can see latest state of the db. Since the changes
* to the task execution are done by the tasks.
* @return DefaultTransactionAttribute with isolation set to READ_COMMITTED.
*/
private TransactionAttribute getTransactionAttribute() {
DefaultTransactionAttribute defaultTransactionAttribute =
new DefaultTransactionAttribute();
defaultTransactionAttribute.setIsolationLevel(
Isolation.READ_COMMITTED.value());
return defaultTransactionAttribute;
}
}