/*
* 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 com.facebook.presto.connector.system;
import com.facebook.presto.connector.ConnectorId;
import com.facebook.presto.metadata.InternalNodeManager;
import com.facebook.presto.spi.SystemTable;
import com.facebook.presto.spi.connector.ConnectorMetadata;
import com.facebook.presto.spi.connector.ConnectorPageSourceProvider;
import com.facebook.presto.spi.connector.ConnectorSplitManager;
import com.facebook.presto.spi.connector.ConnectorTransactionHandle;
import com.facebook.presto.spi.transaction.IsolationLevel;
import com.facebook.presto.transaction.InternalConnector;
import com.facebook.presto.transaction.TransactionId;
import java.util.Set;
import java.util.function.Function;
import static java.util.Objects.requireNonNull;
public class SystemConnector
implements InternalConnector
{
private final ConnectorId connectorId;
private final ConnectorMetadata metadata;
private final ConnectorSplitManager splitManager;
private final ConnectorPageSourceProvider pageSourceProvider;
private final Function<TransactionId, ConnectorTransactionHandle> transactionHandleFunction;
public SystemConnector(
ConnectorId connectorId,
InternalNodeManager nodeManager,
Set<SystemTable> tables,
Function<TransactionId, ConnectorTransactionHandle> transactionHandleFunction)
{
requireNonNull(connectorId, "connectorId is null");
requireNonNull(nodeManager, "nodeManager is null");
requireNonNull(tables, "tables is null");
requireNonNull(transactionHandleFunction, "transactionHandleFunction is null");
this.connectorId = connectorId;
this.metadata = new SystemTablesMetadata(connectorId, tables);
this.splitManager = new SystemSplitManager(nodeManager, tables);
this.pageSourceProvider = new SystemPageSourceProvider(tables);
this.transactionHandleFunction = transactionHandleFunction;
}
@Override
public ConnectorTransactionHandle beginTransaction(TransactionId transactionId, IsolationLevel isolationLevel, boolean readOnly)
{
return new SystemTransactionHandle(connectorId, transactionId, transactionHandleFunction);
}
@Override
public ConnectorMetadata getMetadata(ConnectorTransactionHandle transactionHandle)
{
return metadata;
}
@Override
public ConnectorSplitManager getSplitManager()
{
return splitManager;
}
@Override
public ConnectorPageSourceProvider getPageSourceProvider()
{
return pageSourceProvider;
}
}