/*
* Copyright 2016 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
*
* 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 org.springframework.statemachine.action;
import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertThat;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import org.junit.Test;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.statemachine.AbstractStateMachineTests;
import org.springframework.statemachine.StateContext;
import org.springframework.statemachine.StateMachine;
import org.springframework.statemachine.config.EnableStateMachineFactory;
import org.springframework.statemachine.config.StateMachineConfigurerAdapter;
import org.springframework.statemachine.config.StateMachineFactory;
import org.springframework.statemachine.config.builders.StateMachineConfigurationConfigurer;
import org.springframework.statemachine.config.builders.StateMachineStateConfigurer;
import org.springframework.statemachine.config.builders.StateMachineTransitionConfigurer;
import org.springframework.statemachine.ensemble.InMemoryStateMachineEnsemble;
import org.springframework.statemachine.ensemble.StateMachineEnsemble;
public class DistributedLeaderActionTests extends AbstractStateMachineTests {
@Override
protected AnnotationConfigApplicationContext buildContext() {
return new AnnotationConfigApplicationContext();
}
@Test
public void testAction() throws Exception {
context.register(Config1.class);
context.refresh();
TestLeaderAction action = context.getBean("testLeaderAction", TestLeaderAction.class);
@SuppressWarnings("unchecked")
StateMachineFactory<String, String> factory = context.getBean(StateMachineFactory.class);
StateMachine<String, String> machine1 = factory.getStateMachine();
StateMachine<String, String> machine2 = factory.getStateMachine();
machine1.sendEvent("E1");
assertThat(action.latch.await(1, TimeUnit.SECONDS), is(false));
assertThat(action.count, is(1));
action.reset(2);
machine2.sendEvent("E2");
assertThat(action.latch.await(1, TimeUnit.SECONDS), is(false));
assertThat(action.count, is(1));
}
@Configuration
@EnableStateMachineFactory
static class Config1 extends StateMachineConfigurerAdapter<String, String> {
@Override
public void configure(StateMachineConfigurationConfigurer<String, String> config) throws Exception {
config
.withConfiguration()
.autoStartup(true)
.and()
.withDistributed()
.ensemble(ensemble());
}
@Override
public void configure(StateMachineStateConfigurer<String, String> states) throws Exception {
states
.withStates()
.initial("S1")
.state("S2", testDistributedLeaderAction(), null)
.state("S3", testDistributedLeaderAction(), null);
}
@Override
public void configure(StateMachineTransitionConfigurer<String, String> transitions) throws Exception {
transitions
.withExternal()
.source("S1").target("S2")
.event("E1")
.and()
.withExternal()
.source("S2").target("S3")
.event("E2")
.and()
.withExternal()
.source("S3").target("S1")
.event("E3");
}
@Bean
public StateMachineEnsemble<String, String> ensemble() {
return new InMemoryStateMachineEnsemble<String, String>();
}
@Bean
public Action<String, String> testLeaderAction() {
return new TestLeaderAction();
}
@Bean
public Action<String, String> testDistributedLeaderAction() {
return new DistributedLeaderAction<>(testLeaderAction(), ensemble());
}
}
static class TestLeaderAction implements Action<String, String> {
CountDownLatch latch = new CountDownLatch(2);
int count = 0;
@Override
public void execute(StateContext<String, String> context) {
count++;
latch.countDown();
}
public void reset(int a1) {
count = 0;
latch = new CountDownLatch(a1);
}
}
}