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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.config.server.tenant;
import com.yahoo.config.provision.TenantName;
import com.yahoo.path.Path;
import com.yahoo.vespa.config.server.ReloadHandler;
import com.yahoo.vespa.config.server.RequestHandler;
import com.yahoo.vespa.config.server.application.TenantApplications;
import com.yahoo.vespa.config.server.deploy.TenantFileSystemDirs;
import com.yahoo.vespa.config.server.session.LocalSessionRepo;
import com.yahoo.vespa.config.server.session.RemoteSessionRepo;
import com.yahoo.vespa.config.server.session.SessionFactory;
import com.yahoo.vespa.curator.Curator;
import com.yahoo.vespa.curator.Lock;
import org.apache.zookeeper.data.Stat;
import java.time.Duration;
import java.time.Instant;
import java.util.Optional;
/**
* Contains all tenant-level components for a single tenant, dealing with editing sessions and
* applications for a single tenant.
*
* @author vegardh
* @author Ulf Lilleengen
* @since 5.1.26
*/
public class Tenant implements TenantHandlerProvider {
static final String SESSIONS = "sessions";
static final String APPLICATIONS = "applications";
static final String SESSION_LOCK_PATH = "activateLock";
private final TenantName name;
private final RemoteSessionRepo remoteSessionRepo;
private final Path path;
private final SessionFactory sessionFactory;
private final LocalSessionRepo localSessionRepo;
private final TenantApplications applicationRepo;
private final Lock sessionLock;
private final RequestHandler requestHandler;
private final ReloadHandler reloadHandler;
private final TenantFileSystemDirs tenantFileSystemDirs;
private final Curator curator;
Tenant(TenantName name,
Path path,
SessionFactory sessionFactory,
LocalSessionRepo localSessionRepo,
RemoteSessionRepo remoteSessionRepo,
RequestHandler requestHandler,
ReloadHandler reloadHandler,
TenantApplications applicationRepo,
Curator curator,
TenantFileSystemDirs tenantFileSystemDirs) {
this.name = name;
this.path = path;
this.requestHandler = requestHandler;
this.reloadHandler = reloadHandler;
this.remoteSessionRepo = remoteSessionRepo;
this.sessionFactory = sessionFactory;
this.localSessionRepo = localSessionRepo;
this.sessionLock = createLock(curator, path);
this.applicationRepo = applicationRepo;
this.tenantFileSystemDirs = tenantFileSystemDirs;
this.curator = curator;
}
/**
* The reload handler for this
*
* @return handler
*/
public ReloadHandler getReloadHandler() {
return reloadHandler;
}
/**
* The request handler for this
*
* @return handler
*/
public RequestHandler getRequestHandler() {
return requestHandler;
}
/**
* The RemoteSessionRepo for this
*
* @return repo
*/
public RemoteSessionRepo getRemoteSessionRepo() {
return remoteSessionRepo;
}
public TenantName getName() {
return name;
}
public Path getPath() {
return path;
}
public SessionFactory getSessionFactory() {
return sessionFactory;
}
public LocalSessionRepo getLocalSessionRepo() {
return localSessionRepo;
}
/**
* This lock allows activation and deactivation of sessions under this tenant.
*/
public Lock getSessionLock(Duration timeout) {
sessionLock.acquire(timeout);
return sessionLock;
}
@Override
public String toString() {
return getName().value();
}
public TenantApplications getApplicationRepo() {
return applicationRepo;
}
public Curator getCurator() {
return curator;
}
public Instant getCreatedTime() {
Optional<Stat> stat = curator.getStat(path);
if (stat.isPresent())
return Instant.ofEpochMilli(stat.get().getCtime());
else
return Instant.now();
}
@Override
public boolean equals(Object other) {
if (!(other instanceof Tenant)) {
return false;
}
Tenant that = (Tenant) other;
return name.equals(that.name);
}
@Override
public int hashCode() {
return name.hashCode();
}
/**
* Closes any watchers, thread pools that may react to changes in tenant state, and removes any state
* in filesystem and zookeeper
*/
public void close() {
tenantFileSystemDirs.delete();
remoteSessionRepo.close();
applicationRepo.close();
localSessionRepo.deleteAllSessions();
curator.delete(path);
}
private static Lock createLock(Curator curator, Path tenantPath) {
Path lockPath = tenantPath.append(SESSION_LOCK_PATH);
curator.create(lockPath);
return new Lock(lockPath.getAbsolute(), curator);
}
}
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