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io.trino.connector.CoordinatorDynamicCatalogManager Maven / Gradle / Ivy
/*
* 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 io.trino.connector;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.errorprone.annotations.ThreadSafe;
import com.google.errorprone.annotations.concurrent.GuardedBy;
import com.google.inject.Inject;
import io.airlift.log.Logger;
import io.trino.Session;
import io.trino.connector.system.GlobalSystemConnector;
import io.trino.metadata.Catalog;
import io.trino.metadata.CatalogManager;
import io.trino.server.ForStartup;
import io.trino.spi.TrinoException;
import io.trino.spi.connector.CatalogHandle;
import io.trino.spi.connector.CatalogHandle.CatalogVersion;
import jakarta.annotation.PreDestroy;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Optional;
import java.util.Set;
import java.util.concurrent.Callable;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.Executor;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkState;
import static com.google.common.collect.ImmutableList.toImmutableList;
import static com.google.common.collect.ImmutableSet.toImmutableSet;
import static io.trino.metadata.Catalog.failedCatalog;
import static io.trino.spi.StandardErrorCode.ALREADY_EXISTS;
import static io.trino.spi.StandardErrorCode.CATALOG_NOT_AVAILABLE;
import static io.trino.spi.StandardErrorCode.NOT_FOUND;
import static io.trino.spi.connector.CatalogHandle.createRootCatalogHandle;
import static io.trino.util.Executors.executeUntilFailure;
import static java.lang.String.format;
import static java.util.Objects.requireNonNull;
@ThreadSafe
public class CoordinatorDynamicCatalogManager
implements CatalogManager, ConnectorServicesProvider
{
private static final Logger log = Logger.get(CoordinatorDynamicCatalogManager.class);
private enum State { CREATED, INITIALIZED, STOPPED }
private final CatalogStore catalogStore;
private final CatalogFactory catalogFactory;
private final Executor executor;
private final Lock catalogsUpdateLock = new ReentrantLock();
/**
* Active catalogs that have been created and not dropped.
*/
private final ConcurrentMap activeCatalogs = new ConcurrentHashMap<>();
/**
* All catalogs including those that have been dropped.
*/
private final ConcurrentMap allCatalogs = new ConcurrentHashMap<>();
@GuardedBy("catalogsUpdateLock")
private State state = State.CREATED;
@Inject
public CoordinatorDynamicCatalogManager(CatalogStore catalogStore, CatalogFactory catalogFactory, @ForStartup Executor executor)
{
this.catalogStore = requireNonNull(catalogStore, "catalogStore is null");
this.catalogFactory = requireNonNull(catalogFactory, "catalogFactory is null");
this.executor = requireNonNull(executor, "executor is null");
}
@PreDestroy
public void stop()
{
List catalogs;
catalogsUpdateLock.lock();
try {
if (state == State.STOPPED) {
return;
}
state = State.STOPPED;
catalogs = ImmutableList.copyOf(allCatalogs.values());
allCatalogs.clear();
activeCatalogs.clear();
}
finally {
catalogsUpdateLock.unlock();
}
for (CatalogConnector connector : catalogs) {
connector.shutdown();
}
}
@Override
public void loadInitialCatalogs()
{
catalogsUpdateLock.lock();
try {
if (state == State.INITIALIZED) {
return;
}
checkState(state != State.STOPPED, "ConnectorManager is stopped");
state = State.INITIALIZED;
executeUntilFailure(
executor,
catalogStore.getCatalogs().stream()
.map(storedCatalog -> (Callable) () -> {
CatalogProperties catalog = null;
try {
catalog = storedCatalog.loadProperties();
CatalogConnector newCatalog = catalogFactory.createCatalog(catalog);
activeCatalogs.put(catalog.getCatalogHandle().getCatalogName(), newCatalog.getCatalog());
allCatalogs.put(catalog.getCatalogHandle(), newCatalog);
log.info("-- Added catalog %s using connector %s --", storedCatalog.getName(), catalog.getConnectorName());
}
catch (Throwable e) {
CatalogHandle catalogHandle = catalog != null ? catalog.getCatalogHandle() : createRootCatalogHandle(storedCatalog.getName(), new CatalogVersion("failed"));
ConnectorName connectorName = catalog != null ? catalog.getConnectorName() : new ConnectorName("unknown");
activeCatalogs.put(storedCatalog.getName(), failedCatalog(storedCatalog.getName(), catalogHandle, connectorName));
log.error(e, "-- Failed to load catalog %s using connector %s --", storedCatalog.getName(), connectorName);
}
return null;
})
.collect(toImmutableList()));
}
finally {
catalogsUpdateLock.unlock();
}
}
@Override
public Set getCatalogNames()
{
return ImmutableSet.copyOf(activeCatalogs.keySet());
}
@Override
public Optional getCatalog(String catalogName)
{
return Optional.ofNullable(activeCatalogs.get(catalogName));
}
public Set getActiveCatalogs()
{
return activeCatalogs.values().stream()
.map(Catalog::getCatalogHandle)
.collect(toImmutableSet());
}
@Override
public void ensureCatalogsLoaded(Session session, List catalogs)
{
List missingCatalogs = catalogs.stream()
.filter(catalog -> !allCatalogs.containsKey(catalog.getCatalogHandle()))
.collect(toImmutableList());
if (!missingCatalogs.isEmpty()) {
throw new TrinoException(CATALOG_NOT_AVAILABLE, "Missing catalogs: " + missingCatalogs);
}
}
@Override
public void pruneCatalogs(Set catalogsInUse)
{
List removedCatalogs = new ArrayList<>();
catalogsUpdateLock.lock();
try {
if (state == State.STOPPED) {
return;
}
Iterator> iterator = allCatalogs.entrySet().iterator();
while (iterator.hasNext()) {
Entry entry = iterator.next();
Catalog activeCatalog = activeCatalogs.get(entry.getKey().getCatalogName());
if (activeCatalog != null && activeCatalog.getCatalogHandle().equals(entry.getKey())) {
// catalog is registered with a name, and therefor is available for new queries, and should not be removed
continue;
}
if (!catalogsInUse.contains(entry.getKey())) {
iterator.remove();
removedCatalogs.add(entry.getValue());
}
}
}
finally {
catalogsUpdateLock.unlock();
}
// todo do this in a background thread
for (CatalogConnector removedCatalog : removedCatalogs) {
try {
removedCatalog.shutdown();
}
catch (Throwable e) {
log.error(e, "Error shutting down catalog: %s".formatted(removedCatalog));
}
}
if (!removedCatalogs.isEmpty()) {
List sortedHandles = removedCatalogs.stream().map(connector -> connector.getCatalogHandle().toString()).sorted().toList();
log.info("Pruned catalogs: %s", sortedHandles);
}
}
@Override
public Optional getCatalogProperties(CatalogHandle catalogHandle)
{
return Optional.ofNullable(allCatalogs.get(catalogHandle.getRootCatalogHandle()))
.flatMap(CatalogConnector::getCatalogProperties);
}
@Override
public ConnectorServices getConnectorServices(CatalogHandle catalogHandle)
{
CatalogConnector catalogConnector = allCatalogs.get(catalogHandle.getRootCatalogHandle());
checkArgument(catalogConnector != null, "No catalog '%s'", catalogHandle.getCatalogName());
return catalogConnector.getMaterializedConnector(catalogHandle.getType());
}
@Override
public void createCatalog(String catalogName, ConnectorName connectorName, Map properties, boolean notExists)
{
requireNonNull(catalogName, "catalogName is null");
requireNonNull(connectorName, "connectorName is null");
requireNonNull(properties, "properties is null");
catalogsUpdateLock.lock();
try {
checkState(state != State.STOPPED, "ConnectorManager is stopped");
if (activeCatalogs.containsKey(catalogName)) {
if (!notExists) {
throw new TrinoException(ALREADY_EXISTS, format("Catalog '%s' already exists", catalogName));
}
return;
}
CatalogProperties catalogProperties = catalogStore.createCatalogProperties(catalogName, connectorName, properties);
// get or create catalog for the handle
CatalogConnector catalog = allCatalogs.computeIfAbsent(
catalogProperties.getCatalogHandle(),
handle -> catalogFactory.createCatalog(catalogProperties));
activeCatalogs.put(catalogName, catalog.getCatalog());
catalogStore.addOrReplaceCatalog(catalogProperties);
log.info("Added catalog: %s", catalog.getCatalogHandle());
}
finally {
catalogsUpdateLock.unlock();
}
}
public void registerGlobalSystemConnector(GlobalSystemConnector connector)
{
requireNonNull(connector, "connector is null");
catalogsUpdateLock.lock();
try {
if (state == State.STOPPED) {
return;
}
CatalogConnector catalog = catalogFactory.createCatalog(GlobalSystemConnector.CATALOG_HANDLE, new ConnectorName(GlobalSystemConnector.NAME), connector);
if (activeCatalogs.putIfAbsent(GlobalSystemConnector.NAME, catalog.getCatalog()) != null) {
throw new IllegalStateException("Global system catalog already registered");
}
allCatalogs.put(GlobalSystemConnector.CATALOG_HANDLE, catalog);
}
finally {
catalogsUpdateLock.unlock();
}
}
@Override
public void dropCatalog(String catalogName, boolean exists)
{
requireNonNull(catalogName, "catalogName is null");
boolean removed;
catalogsUpdateLock.lock();
try {
checkState(state != State.STOPPED, "ConnectorManager is stopped");
catalogStore.removeCatalog(catalogName);
removed = activeCatalogs.remove(catalogName) != null;
}
finally {
catalogsUpdateLock.unlock();
}
if (!removed && !exists) {
throw new TrinoException(NOT_FOUND, format("Catalog '%s' does not exist", catalogName));
}
// Do not shut down the catalog, because there may still be running queries using this catalog.
// Catalog shutdown logic will be added later.
}
}
