package com.google.code.rees.scope.conversation.context;
import static org.junit.Assert.assertEquals;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import org.junit.Ignore;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.code.rees.scope.testutil.SerializationTestingUtil;
import com.google.code.rees.scope.util.thread.BasicTaskThread;
import com.google.code.rees.scope.util.thread.TaskThread;
import com.google.code.rees.scope.util.thread.ThreadTask;
public class DefaultConversationContextManagerTest {
static final String TEST_NAME = "test";
@Test
public void testGetContext() {
}
@Test
public void testSerialization() throws Exception {
String testName = "test-conversation";
String testId = "testId";
DefaultConversationContextManager mgr = new DefaultConversationContextManager();
mgr.setContextFactory(new DefaultConversationContextFactory());
ConversationContext ctx = mgr.getContext(testName, testId);
mgr = SerializationTestingUtil.getSerializedCopy(mgr);
assertEquals(ctx, mgr.getContext(testName, testId));
}
/**
*
* test takes a long time, run manually
*/
@Ignore
@Test
public void testConcurrentModification() throws InterruptedException {
ConversationContextManager manager = new DefaultConversationContextManager();
manager.setContextFactory(new DefaultConversationContextFactory());
manager.setMaxInstances(4);
TaskThread contractionThread = BasicTaskThread.spawnInstance();
CollectionContractionTask collectionContractionTask = new CollectionContractionTask(manager);
contractionThread.addTask(collectionContractionTask);
TaskThread expansionThread = BasicTaskThread.spawnInstance();
expansionThread.addTask(new CollectionExpansionTask(manager, collectionContractionTask));
Thread.sleep(8000L);
for (int i = 0; i < 200; i++) {
BasicTaskThread.spawnInstance().addTask(new CollectionExpansionTask(manager, collectionContractionTask));
}
Thread.sleep(8000L);
}
class CollectionExpansionTask implements ThreadTask {
private final Logger LOG = LoggerFactory.getLogger(CollectionExpansionTask.class);
private ConversationContextManager manager;
private CollectionContractionTask removalTask;
CollectionExpansionTask(ConversationContextManager manager, CollectionContractionTask removalTask) {
this.manager = manager;
this.removalTask = removalTask;
}
@Override public boolean isActive() {return true;}
@Override public void cancel() {}
@Override
public void doTask() {
//this will create a new context
LOG.info("Expanding...");
String id = getNextId();
this.manager.getContext(TEST_NAME, id);
this.removalTask.addId(id);
Thread.yield();
}
}
static long id = 1L;
public static synchronized String getNextId() {
return String.valueOf(id++);
}
class CollectionContractionTask implements ThreadTask {
private final Logger LOG = LoggerFactory.getLogger(CollectionContractionTask.class);
private ConversationContextManager manager;
private Collection<String> ids = Collections.synchronizedSet(new HashSet<String>());
CollectionContractionTask(ConversationContextManager manager) {
this.manager = manager;
}
@Override public boolean isActive() {return true;}
@Override public void cancel() {}
@Override
public void doTask() {
synchronized (this.ids) {
for (String id : this.ids) {
LOG.info("Contracting...");
manager.remove(TEST_NAME, id);
Thread.yield();
}
this.ids.clear();
}
try {
Thread.sleep(1L);
} catch (InterruptedException e) {
// meh
}
}
public void addId(String id) {
synchronized (this.ids) {
this.ids.add(id);
}
}
}
}