org.apache.pulsar.metadata.bookkeeper.PulsarLayoutManager Maven / Gradle / Ivy
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* 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.pulsar.metadata.bookkeeper;
import java.io.IOException;
import java.util.Optional;
import java.util.concurrent.ExecutionException;
import lombok.AccessLevel;
import lombok.Getter;
import org.apache.bookkeeper.bookie.BookieException;
import org.apache.bookkeeper.meta.LayoutManager;
import org.apache.bookkeeper.meta.LedgerLayout;
import org.apache.bookkeeper.util.BookKeeperConstants;
import org.apache.pulsar.metadata.api.MetadataStoreException;
import org.apache.pulsar.metadata.api.extended.MetadataStoreExtended;
public class PulsarLayoutManager implements LayoutManager {
@Getter(AccessLevel.PACKAGE)
private final MetadataStoreExtended store;
@Getter(AccessLevel.PACKAGE)
private final String ledgersRootPath;
private final String layoutPath;
public PulsarLayoutManager(MetadataStoreExtended store, String ledgersRootPath) {
this.ledgersRootPath = ledgersRootPath;
this.store = store;
this.layoutPath = ledgersRootPath + "/" + BookKeeperConstants.LAYOUT_ZNODE;
}
@Override
public LedgerLayout readLedgerLayout() throws IOException {
try {
byte[] layoutData = store.get(layoutPath).get()
.orElseThrow(() -> new BookieException.MetadataStoreException("Layout node not found"))
.getValue();
return LedgerLayout.parseLayout(layoutData);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new IOException(e);
} catch (BookieException | ExecutionException e) {
throw new IOException(e);
}
}
@Override
public void storeLedgerLayout(LedgerLayout ledgerLayout) throws IOException {
try {
byte[] layoutData = ledgerLayout.serialize();
store.put(layoutPath, layoutData, Optional.of(-1L)).get();
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new IOException(e);
} catch (ExecutionException e) {
if (e.getCause() instanceof MetadataStoreException.BadVersionException) {
throw new LedgerLayoutExistsException(e);
} else {
throw new IOException(e);
}
}
}
@Override
public void deleteLedgerLayout() throws IOException {
try {
store.delete(layoutPath, Optional.empty()).get();
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new IOException(e);
} catch (ExecutionException e) {
throw new IOException(e);
}
}
}