/*
* Copyright 2015-2016 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.config;
import static org.hamcrest.Matchers.containsInAnyOrder;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.notNullValue;
import static org.junit.Assert.assertThat;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import org.junit.Test;
import org.springframework.beans.factory.support.StaticListableBeanFactory;
import org.springframework.context.SmartLifecycle;
import org.springframework.core.task.SyncTaskExecutor;
import org.springframework.scheduling.concurrent.ConcurrentTaskScheduler;
import org.springframework.statemachine.StateMachine;
import org.springframework.statemachine.StateMachineSystemConstants;
import org.springframework.statemachine.TestUtils;
import org.springframework.statemachine.config.StateMachineBuilder.Builder;
import org.springframework.statemachine.config.builders.StateMachineConfigBuilder;
import org.springframework.statemachine.config.builders.StateMachineStateConfigurer;
import org.springframework.statemachine.config.builders.StateMachineTransitionConfigurer;
import org.springframework.statemachine.config.model.DefaultStateMachineModel;
import org.springframework.statemachine.config.model.ConfigurationData;
import org.springframework.statemachine.config.model.StatesData;
import org.springframework.statemachine.config.model.TransitionsData;
import org.springframework.statemachine.listener.StateMachineListenerAdapter;
import org.springframework.statemachine.state.State;
public class ManualBuilderTests {
@Test
public void testManualBuildConcept() throws Exception {
StateMachineConfigBuilder<String, String> builder = new StateMachineConfigBuilder<String, String>();
Config config = new Config();
builder.apply(config);
StateMachineConfig<String, String> stateMachineConfig = builder.getOrBuild();
TransitionsData<String, String> stateMachineTransitions = stateMachineConfig.getTransitions();
StatesData<String, String> stateMachineStates = stateMachineConfig.getStates();
ConfigurationData<String, String> stateMachineConfigurationConfig = stateMachineConfig.getStateMachineConfigurationConfig();
ObjectStateMachineFactory<String, String> stateMachineFactory = new ObjectStateMachineFactory<String, String>(
new DefaultStateMachineModel<String, String>(stateMachineConfigurationConfig, stateMachineStates, stateMachineTransitions));
StaticListableBeanFactory beanFactory = new StaticListableBeanFactory();
beanFactory.addBean(StateMachineSystemConstants.TASK_EXECUTOR_BEAN_NAME, new SyncTaskExecutor());
beanFactory.addBean("taskScheduler", new ConcurrentTaskScheduler());
stateMachineFactory.setBeanFactory(beanFactory);
TestListener listener = new TestListener();
StateMachine<String,String> stateMachine = stateMachineFactory.getStateMachine();
stateMachine.addStateListener(listener);
stateMachine.start();
assertThat(listener.stateChangedLatch.await(2, TimeUnit.SECONDS), is(true));
assertThat(listener.stateChangedCount, is(1));
assertThat(stateMachine, notNullValue());
assertThat(stateMachine.getState().getIds(), containsInAnyOrder("S1"));
}
@Test
public void testManualBuildTaskViaBeanFactory() throws Exception {
Builder<String, String> builder = StateMachineBuilder.builder();
StaticListableBeanFactory beanFactory = new StaticListableBeanFactory();
beanFactory.addBean(StateMachineSystemConstants.TASK_EXECUTOR_BEAN_NAME, new SyncTaskExecutor());
beanFactory.addBean("taskScheduler", new ConcurrentTaskScheduler());
builder.configureConfiguration()
.withConfiguration()
.beanFactory(beanFactory);
builder.configureStates()
.withStates()
.initial("S1").state("S2");
builder.configureTransitions()
.withExternal()
.source("S1").target("S2").event("E1")
.and()
.withExternal()
.source("S2").target("S1").event("E2");
StateMachine<String, String> stateMachine = builder.build();
assertThat(stateMachine, notNullValue());
TestListener listener = new TestListener();
stateMachine.addStateListener(listener);
stateMachine.start();
assertThat(listener.stateChangedLatch.await(2, TimeUnit.SECONDS), is(true));
assertThat(listener.stateChangedCount, is(1));
assertThat(stateMachine, notNullValue());
assertThat(stateMachine.getState().getIds(), containsInAnyOrder("S1"));
}
@Test
public void testManualBuildTaskViaBeanFactory2() throws Exception {
Builder<MyStates, MyEvents> builder = StateMachineBuilder.builder();
StaticListableBeanFactory beanFactory = new StaticListableBeanFactory();
beanFactory.addBean(StateMachineSystemConstants.TASK_EXECUTOR_BEAN_NAME, new SyncTaskExecutor());
beanFactory.addBean("taskScheduler", new ConcurrentTaskScheduler());
builder.configureConfiguration()
.withConfiguration()
.beanFactory(beanFactory);
builder.configureStates()
.withStates()
.initial(MyStates.S1).state(MyStates.S2);
builder.configureTransitions()
.withExternal()
.source(MyStates.S1).target(MyStates.S2).event(MyEvents.E1)
.and()
.withExternal()
.source(MyStates.S2).target(MyStates.S1).event(MyEvents.E2);
StateMachine<MyStates, MyEvents> stateMachine = builder.build();
assertThat(stateMachine, notNullValue());
TestListener2 listener = new TestListener2();
stateMachine.addStateListener(listener);
stateMachine.start();
assertThat(listener.stateChangedLatch.await(2, TimeUnit.SECONDS), is(true));
assertThat(listener.stateChangedCount, is(1));
assertThat(stateMachine, notNullValue());
assertThat(stateMachine.getState().getIds(), containsInAnyOrder(MyStates.S1));
listener.reset(1);
stateMachine.sendEvent(MyEvents.E1);
assertThat(listener.stateChangedLatch.await(2, TimeUnit.SECONDS), is(true));
assertThat(listener.stateChangedCount, is(1));
assertThat(stateMachine, notNullValue());
assertThat(stateMachine.getState().getIds(), containsInAnyOrder(MyStates.S2));
}
@Test
public void testManualBuildExplicitTaskExecutorAndScheduler() throws Exception {
Builder<String, String> builder = StateMachineBuilder.builder();
builder.configureConfiguration()
.withConfiguration()
.taskExecutor(new SyncTaskExecutor())
.taskScheduler(new ConcurrentTaskScheduler());
builder.configureStates()
.withStates()
.initial("S1").state("S2");
builder.configureTransitions()
.withExternal()
.source("S1").target("S2").event("E1")
.and()
.withExternal()
.source("S2").target("S1").event("E2");
StateMachine<String, String> stateMachine = builder.build();
assertThat(stateMachine, notNullValue());
TestListener listener = new TestListener();
stateMachine.addStateListener(listener);
stateMachine.start();
assertThat(listener.stateChangedLatch.await(2, TimeUnit.SECONDS), is(true));
assertThat(listener.stateChangedCount, is(1));
assertThat(stateMachine, notNullValue());
assertThat(stateMachine.getState().getIds(), containsInAnyOrder("S1"));
listener.reset(1);
stateMachine.sendEvent("E1");
assertThat(listener.stateChangedLatch.await(2, TimeUnit.SECONDS), is(true));
assertThat(listener.stateChangedCount, is(1));
assertThat(stateMachine, notNullValue());
assertThat(stateMachine.getState().getIds(), containsInAnyOrder("S2"));
}
@Test
public void testManualBuildDefaultTaskExecutor() throws Exception {
Builder<String, String> builder = StateMachineBuilder.builder();
builder.configureStates()
.withStates()
.initial("S1").state("S2");
builder.configureTransitions()
.withExternal()
.source("S1").target("S2").event("E1")
.and()
.withExternal()
.source("S2").target("S1").event("E2");
StateMachine<String, String> stateMachine = builder.build();
assertThat(stateMachine, notNullValue());
assertThat(TestUtils.readField("taskExecutor", stateMachine), notNullValue());
assertThat(TestUtils.readField("taskScheduler", stateMachine), notNullValue());
}
@Test
public void testAutoStartFlagOn() throws Exception {
Builder<String, String> builder = StateMachineBuilder.builder();
builder.configureConfiguration()
.withConfiguration()
.autoStartup(true)
.taskExecutor(new SyncTaskExecutor())
.taskScheduler(new ConcurrentTaskScheduler());
builder.configureStates()
.withStates()
.initial("S1").state("S2");
builder.configureTransitions()
.withExternal()
.source("S1").target("S2").event("E1")
.and()
.withExternal()
.source("S2").target("S1").event("E2");
StateMachine<String, String> stateMachine = builder.build();
assertThat(((SmartLifecycle)stateMachine).isAutoStartup(), is(true));
assertThat(((SmartLifecycle)stateMachine).isRunning(), is(true));
}
static enum MyStates {
S1, S2
}
static enum MyEvents {
E1, E2
}
static class Config extends StateMachineConfigurerAdapter<String, String> {
@Override
public void configure(StateMachineStateConfigurer<String, String> states) throws Exception {
states
.withStates()
.initial("S1").state("S2");
}
@Override
public void configure(StateMachineTransitionConfigurer<String, String> transitions) throws Exception {
transitions
.withExternal()
.source("S1").target("S2").event("E1")
.and()
.withExternal()
.source("S2").target("S1").event("E2");
}
}
private static class TestListener extends StateMachineListenerAdapter<String, String> {
volatile CountDownLatch stateChangedLatch = new CountDownLatch(1);
volatile int stateChangedCount = 0;
@Override
public void stateChanged(State<String, String> from, State<String, String> to) {
stateChangedCount++;
stateChangedLatch.countDown();
}
public void reset(int a1) {
stateChangedCount = 0;
stateChangedLatch = new CountDownLatch(a1);
}
}
private static class TestListener2 extends StateMachineListenerAdapter<MyStates, MyEvents> {
volatile CountDownLatch stateChangedLatch = new CountDownLatch(1);
volatile int stateChangedCount = 0;
@Override
public void stateChanged(State<MyStates, MyEvents> from, State<MyStates, MyEvents> to) {
stateChangedCount++;
stateChangedLatch.countDown();
}
public void reset(int a1) {
stateChangedCount = 0;
stateChangedLatch = new CountDownLatch(a1);
}
}
}