Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* 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.plugin.deltalake;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.inject.Injector;
import io.airlift.bootstrap.LifeCycleManager;
import io.trino.plugin.base.classloader.ClassLoaderSafeConnectorMetadata;
import io.trino.plugin.base.session.SessionPropertiesProvider;
import io.trino.plugin.hive.HiveTransactionHandle;
import io.trino.spi.connector.Connector;
import io.trino.spi.connector.ConnectorAccessControl;
import io.trino.spi.connector.ConnectorCapabilities;
import io.trino.spi.connector.ConnectorMetadata;
import io.trino.spi.connector.ConnectorNodePartitioningProvider;
import io.trino.spi.connector.ConnectorPageSinkProvider;
import io.trino.spi.connector.ConnectorPageSourceProvider;
import io.trino.spi.connector.ConnectorSession;
import io.trino.spi.connector.ConnectorSplitManager;
import io.trino.spi.connector.ConnectorTransactionHandle;
import io.trino.spi.connector.SystemTable;
import io.trino.spi.connector.TableProcedureMetadata;
import io.trino.spi.eventlistener.EventListener;
import io.trino.spi.function.FunctionProvider;
import io.trino.spi.function.table.ConnectorTableFunction;
import io.trino.spi.procedure.Procedure;
import io.trino.spi.session.PropertyMetadata;
import io.trino.spi.transaction.IsolationLevel;
import java.util.Collection;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import static com.google.common.collect.ImmutableList.toImmutableList;
import static com.google.common.collect.Sets.immutableEnumSet;
import static io.trino.spi.connector.ConnectorCapabilities.NOT_NULL_COLUMN_CONSTRAINT;
import static io.trino.spi.transaction.IsolationLevel.READ_COMMITTED;
import static io.trino.spi.transaction.IsolationLevel.checkConnectorSupports;
import static java.util.Objects.requireNonNull;
public class DeltaLakeConnector
implements Connector
{
private final Injector injector;
private final LifeCycleManager lifeCycleManager;
private final ConnectorSplitManager splitManager;
private final ConnectorPageSourceProvider pageSourceProvider;
private final ConnectorPageSinkProvider pageSinkProvider;
private final ConnectorNodePartitioningProvider nodePartitioningProvider;
private final Set systemTables;
private final Set procedures;
private final Set tableProcedures;
private final List> sessionProperties;
private final List> schemaProperties;
private final List> tableProperties;
private final List> analyzeProperties;
private final Optional accessControl;
private final Set eventListeners;
// Delta lake is not transactional but we use Trino transaction boundaries to create a per-query
// caching Hive metastore clients. DeltaLakeTransactionManager is used to store those.
private final DeltaLakeTransactionManager transactionManager;
private final Set tableFunctions;
private final FunctionProvider functionProvider;
public DeltaLakeConnector(
Injector injector,
LifeCycleManager lifeCycleManager,
ConnectorSplitManager splitManager,
ConnectorPageSourceProvider pageSourceProvider,
ConnectorPageSinkProvider pageSinkProvider,
ConnectorNodePartitioningProvider nodePartitioningProvider,
Set systemTables,
Set procedures,
Set tableProcedures,
Set sessionPropertiesProviders,
List> schemaProperties,
List> tableProperties,
List> analyzeProperties,
Optional accessControl,
Set eventListeners,
DeltaLakeTransactionManager transactionManager,
Set tableFunctions,
FunctionProvider functionProvider)
{
this.injector = requireNonNull(injector, "injector is null");
this.lifeCycleManager = requireNonNull(lifeCycleManager, "lifeCycleManager is null");
this.splitManager = requireNonNull(splitManager, "splitManager is null");
this.pageSourceProvider = requireNonNull(pageSourceProvider, "pageSourceProvider is null");
this.pageSinkProvider = requireNonNull(pageSinkProvider, "pageSinkProvider is null");
this.nodePartitioningProvider = requireNonNull(nodePartitioningProvider, "nodePartitioningProvider is null");
this.systemTables = ImmutableSet.copyOf(requireNonNull(systemTables, "systemTables is null"));
this.procedures = ImmutableSet.copyOf(requireNonNull(procedures, "procedures is null"));
this.tableProcedures = ImmutableSet.copyOf(requireNonNull(tableProcedures, "tableProcedures is null"));
this.sessionProperties = sessionPropertiesProviders.stream()
.map(SessionPropertiesProvider::getSessionProperties)
.flatMap(Collection::stream)
.collect(toImmutableList());
this.schemaProperties = ImmutableList.copyOf(requireNonNull(schemaProperties, "schemaProperties is null"));
this.tableProperties = ImmutableList.copyOf(requireNonNull(tableProperties, "tableProperties is null"));
this.analyzeProperties = ImmutableList.copyOf(requireNonNull(analyzeProperties, "analyzeProperties is null"));
this.accessControl = requireNonNull(accessControl, "accessControl is null");
this.eventListeners = ImmutableSet.copyOf(requireNonNull(eventListeners, "eventListeners is null"));
this.transactionManager = requireNonNull(transactionManager, "transactionManager is null");
this.tableFunctions = ImmutableSet.copyOf(requireNonNull(tableFunctions, "tableFunctions is null"));
this.functionProvider = requireNonNull(functionProvider, "functionProvider is null");
}
@Override
public ConnectorMetadata getMetadata(ConnectorSession session, ConnectorTransactionHandle transaction)
{
ConnectorMetadata metadata = transactionManager.get(transaction, session.getIdentity());
return new ClassLoaderSafeConnectorMetadata(metadata, getClass().getClassLoader());
}
@Override
public ConnectorSplitManager getSplitManager()
{
return splitManager;
}
@Override
public ConnectorPageSourceProvider getPageSourceProvider()
{
return pageSourceProvider;
}
@Override
public ConnectorPageSinkProvider getPageSinkProvider()
{
return pageSinkProvider;
}
@Override
public ConnectorNodePartitioningProvider getNodePartitioningProvider()
{
return nodePartitioningProvider;
}
@Override
public Set getSystemTables()
{
return systemTables;
}
@Override
public Set getProcedures()
{
return procedures;
}
@Override
public Set getTableProcedures()
{
return tableProcedures;
}
@Override
public List> getSessionProperties()
{
return sessionProperties;
}
@Override
public List> getSchemaProperties()
{
return schemaProperties;
}
@Override
public List> getTableProperties()
{
return tableProperties;
}
@Override
public List> getAnalyzeProperties()
{
return analyzeProperties;
}
@Override
public ConnectorAccessControl getAccessControl()
{
return accessControl.orElseThrow(UnsupportedOperationException::new);
}
@Override
public Iterable getEventListeners()
{
return eventListeners;
}
@Override
public ConnectorTransactionHandle beginTransaction(IsolationLevel isolationLevel, boolean readOnly, boolean autoCommit)
{
checkConnectorSupports(READ_COMMITTED, isolationLevel);
ConnectorTransactionHandle transaction = new HiveTransactionHandle(true);
transactionManager.begin(transaction);
return transaction;
}
@Override
public void commit(ConnectorTransactionHandle transaction)
{
transactionManager.commit(transaction);
}
@Override
public void rollback(ConnectorTransactionHandle transaction)
{
transactionManager.rollback(transaction);
}
@Override
public final void shutdown()
{
lifeCycleManager.stop();
}
@Override
public Set getCapabilities()
{
return immutableEnumSet(NOT_NULL_COLUMN_CONSTRAINT);
}
@Override
public Set getTableFunctions()
{
return tableFunctions;
}
@Override
public Optional getFunctionProvider()
{
return Optional.of(functionProvider);
}
@VisibleForTesting
public Injector getInjector()
{
return injector;
}
}