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/*
* 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.spi.connector.classloader;
import com.facebook.presto.common.type.Type;
import com.facebook.presto.spi.BucketFunction;
import com.facebook.presto.spi.ConnectorSession;
import com.facebook.presto.spi.ConnectorSplit;
import com.facebook.presto.spi.Node;
import com.facebook.presto.spi.classloader.ThreadContextClassLoader;
import com.facebook.presto.spi.connector.ConnectorBucketNodeMap;
import com.facebook.presto.spi.connector.ConnectorNodePartitioningProvider;
import com.facebook.presto.spi.connector.ConnectorPartitionHandle;
import com.facebook.presto.spi.connector.ConnectorPartitioningHandle;
import com.facebook.presto.spi.connector.ConnectorTransactionHandle;
import java.util.List;
import java.util.function.ToIntFunction;
import static java.util.Objects.requireNonNull;
public final class ClassLoaderSafeNodePartitioningProvider
implements ConnectorNodePartitioningProvider
{
private final ConnectorNodePartitioningProvider delegate;
private final ClassLoader classLoader;
public ClassLoaderSafeNodePartitioningProvider(ConnectorNodePartitioningProvider delegate, ClassLoader classLoader)
{
this.delegate = requireNonNull(delegate, "delegate is null");
this.classLoader = requireNonNull(classLoader, "classLoader is null");
}
@Override
public BucketFunction getBucketFunction(
ConnectorTransactionHandle transactionHandle,
ConnectorSession session,
ConnectorPartitioningHandle partitioningHandle,
List partitionChannelTypes,
int bucketCount)
{
try (ThreadContextClassLoader ignored = new ThreadContextClassLoader(classLoader)) {
return delegate.getBucketFunction(transactionHandle, session, partitioningHandle, partitionChannelTypes, bucketCount);
}
}
@Override
public List listPartitionHandles(ConnectorTransactionHandle transactionHandle, ConnectorSession session, ConnectorPartitioningHandle partitioningHandle)
{
try (ThreadContextClassLoader ignored = new ThreadContextClassLoader(classLoader)) {
return delegate.listPartitionHandles(transactionHandle, session, partitioningHandle);
}
}
@Override
public ConnectorBucketNodeMap getBucketNodeMap(ConnectorTransactionHandle transactionHandle, ConnectorSession session, ConnectorPartitioningHandle partitioningHandle, List sortedNodes)
{
try (ThreadContextClassLoader ignored = new ThreadContextClassLoader(classLoader)) {
return delegate.getBucketNodeMap(transactionHandle, session, partitioningHandle, sortedNodes);
}
}
@Override
public ToIntFunction getSplitBucketFunction(ConnectorTransactionHandle transactionHandle, ConnectorSession session, ConnectorPartitioningHandle partitioningHandle)
{
try (ThreadContextClassLoader ignored = new ThreadContextClassLoader(classLoader)) {
return delegate.getSplitBucketFunction(transactionHandle, session, partitioningHandle);
}
}
@Override
public int getBucketCount(ConnectorTransactionHandle transactionHandle, ConnectorSession session, ConnectorPartitioningHandle partitioningHandle)
{
try (ThreadContextClassLoader ignored = new ThreadContextClassLoader(classLoader)) {
return delegate.getBucketCount(transactionHandle, session, partitioningHandle);
}
}
}
