com.facebook.presto.spi.connector.classloader.ClassLoaderSafeConnectorSplitManager 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 com.facebook.presto.spi.connector.classloader;
import com.facebook.presto.spi.ConnectorSession;
import com.facebook.presto.spi.ConnectorSplitSource;
import com.facebook.presto.spi.ConnectorTableLayoutHandle;
import com.facebook.presto.spi.classloader.ThreadContextClassLoader;
import com.facebook.presto.spi.connector.ConnectorSplitManager;
import com.facebook.presto.spi.connector.ConnectorTransactionHandle;
import static java.util.Objects.requireNonNull;
public final class ClassLoaderSafeConnectorSplitManager
implements ConnectorSplitManager
{
private final ConnectorSplitManager delegate;
private final ClassLoader classLoader;
public ClassLoaderSafeConnectorSplitManager(ConnectorSplitManager delegate, ClassLoader classLoader)
{
this.delegate = requireNonNull(delegate, "delegate is null");
this.classLoader = requireNonNull(classLoader, "classLoader is null");
}
@Override
public ConnectorSplitSource getSplits(ConnectorTransactionHandle transactionHandle, ConnectorSession session, ConnectorTableLayoutHandle layout, SplitSchedulingStrategy splitSchedulingStrategy)
{
try (ThreadContextClassLoader ignored = new ThreadContextClassLoader(classLoader)) {
return delegate.getSplits(transactionHandle, session, layout, splitSchedulingStrategy);
}
}
}