org.apache.bookkeeper.mledger.offload.Offloaders Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.bookkeeper.mledger.offload;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.apache.bookkeeper.mledger.LedgerOffloaderFactory;
import org.apache.commons.lang3.tuple.Pair;
import org.apache.pulsar.common.nar.NarClassLoader;
@Slf4j
@Data
public class Offloaders implements AutoCloseable {
private final List> offloaders = new ArrayList<>();
public LedgerOffloaderFactory getOffloaderFactory(String driverName) throws IOException {
for (Pair factory : offloaders) {
if (factory.getRight().isDriverSupported(driverName)) {
return factory.getRight();
}
}
throw new IOException("No offloader found for driver '" + driverName + "'."
+ " Please make sure you dropped the offloader nar packages under `${PULSAR_HOME}/offloaders`.");
}
@Override
public void close() throws Exception {
offloaders.forEach(offloader -> {
try {
offloader.getLeft().close();
} catch (IOException e) {
log.warn("Failed to close nar class loader for offloader '{}': {}",
offloader.getRight().getClass(), e.getMessage());
}
});
}
}