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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.config.server.session;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.*;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.TenantName;
import com.yahoo.path.Path;
import com.yahoo.text.Utf8;
import com.yahoo.transaction.Transaction;
import com.yahoo.vespa.config.server.*;
import com.yahoo.vespa.config.server.application.TenantApplications;
import com.yahoo.vespa.config.server.tenant.Tenant;
import com.yahoo.vespa.config.server.tenant.TenantBuilder;
import com.yahoo.vespa.curator.Curator;
import org.junit.Before;
import org.junit.Test;
import com.yahoo.vespa.config.server.zookeeper.ConfigCurator;
import java.time.Duration;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.TimeUnit;
import java.util.function.LongPredicate;
/**
* @author lulf
* @since 5.1
*/
public class RemoteSessionRepoTest extends TestWithCurator {
private RemoteSessionRepo remoteSessionRepo;
@Before
public void setupFacade() throws Exception {
createSession(2l, false);
createSession(3l, false);
curator.create(Path.fromString("/applications"));
curator.create(Path.fromString("/sessions"));
Tenant tenant = TenantBuilder.create(new TestComponentRegistry.Builder().curator(curator).build(),
TenantName.defaultName(),
Path.createRoot()).build();
this.remoteSessionRepo = tenant.getRemoteSessionRepo();
}
private void createSession(long sessionId, boolean wait) {
createSession("", sessionId, wait);
}
private void createSession(String root, long sessionId, boolean wait) {
Path rootPath = Path.fromString(root).append("sessions");
curator.create(rootPath);
SessionZooKeeperClient zkc = new SessionZooKeeperClient(curator, rootPath.append(String.valueOf(sessionId)));
zkc.createNewSession(System.currentTimeMillis(), TimeUnit.MILLISECONDS);
if (wait) {
Curator.CompletionWaiter waiter = zkc.getUploadWaiter();
waiter.awaitCompletion(Duration.ofSeconds(120));
}
}
@Test
public void testInitialize() {
assertSessionExists(2l);
assertSessionExists(3l);
}
@Test
public void testCreateSession() throws Exception {
createSession(0l, true);
assertSessionExists(0l);
}
@Test
public void testSessionStateChange() throws Exception {
Path session = Path.fromString("/sessions/0");
createSession(0l, true);
assertSessionStatus(0l, Session.Status.NEW);
assertStatusChange(0l, Session.Status.PREPARE);
assertStatusChange(0l, Session.Status.ACTIVATE);
curator.delete(session);
assertSessionRemoved(0l);
assertNull(remoteSessionRepo.getSession(0l));
}
@Test
public void testBadApplicationRepoOnActivate() throws Exception {
TenantApplications applicationRepo = new FailingTenantApplications();
curator.framework().create().forPath("/mytenant");
Tenant tenant = TenantBuilder.create(new TestComponentRegistry.Builder().curator(curator).build(),
TenantName.from("mytenant"),
Path.fromString("mytenant"))
.withApplicationRepo(applicationRepo)
.build();
remoteSessionRepo = tenant.getRemoteSessionRepo();
createSession("/mytenant", 2l, true);
assertThat(remoteSessionRepo.listSessions().size(), is(1));
}
private void assertStatusChange(long sessionId, Session.Status status) throws Exception {
Path statePath = Path.fromString("/sessions/" + sessionId).append(ConfigCurator.SESSIONSTATE_ZK_SUBPATH);
curator.create(statePath);
curatorFramework.setData().forPath(statePath.getAbsolute(), Utf8.toBytes(status.toString()));
System.out.println("Setting status " + status + " for " + sessionId);
assertSessionStatus(0l, status);
}
private void assertSessionRemoved(long sessionId) {
waitFor(p -> remoteSessionRepo.getSession(sessionId) == null, sessionId);
assertNull(remoteSessionRepo.getSession(sessionId));
}
private void assertSessionExists(long sessionId) {
assertSessionStatus(sessionId, Session.Status.NEW);
}
private void assertSessionStatus(long sessionId, Session.Status status) {
waitFor(p -> remoteSessionRepo.getSession(sessionId) != null &&
remoteSessionRepo.getSession(sessionId).getStatus() == status, sessionId);
assertNotNull(remoteSessionRepo.getSession(sessionId));
assertThat(remoteSessionRepo.getSession(sessionId).getStatus(), is(status));
}
private void waitFor(LongPredicate predicate, long sessionId) {
long endTime = System.currentTimeMillis() + 60_000;
boolean ok;
do {
ok = predicate.test(sessionId);
try {
Thread.sleep(10);
} catch (InterruptedException e) {
e.printStackTrace();
}
} while (System.currentTimeMillis() < endTime && !ok);
}
private class FailingTenantApplications implements TenantApplications {
@Override
public List<ApplicationId> listApplications() {
return Collections.singletonList(ApplicationId.defaultId());
}
@Override
public Transaction createPutApplicationTransaction(ApplicationId applicationId, long sessionId) {
return null;
}
@Override
public long getSessionIdForApplication(ApplicationId applicationId) {
throw new IllegalArgumentException("Bad id " + applicationId);
}
@Override
public Transaction deleteApplication(ApplicationId applicationId) {
return null;
}
@Override
public void close() {
}
}
}
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