org.apache.bookkeeper.mledger.impl.NullLedgerOffloader 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.impl;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.CompletableFuture;
import org.apache.bookkeeper.client.api.ReadHandle;
import org.apache.bookkeeper.mledger.LedgerOffloader;
/**
* Null implementation that throws an error on any invokation.
*/
public class NullLedgerOffloader implements LedgerOffloader {
public static NullLedgerOffloader INSTANCE = new NullLedgerOffloader();
@Override
public String getOffloadDriverName() {
return "NullLedgerOffloader";
}
@Override
public CompletableFuture offload(ReadHandle ledger,
UUID uid,
Map extraMetadata) {
CompletableFuture promise = new CompletableFuture<>();
promise.completeExceptionally(new UnsupportedOperationException());
return promise;
}
@Override
public CompletableFuture readOffloaded(long ledgerId, UUID uid,
Map offloadDriverMetadata) {
CompletableFuture promise = new CompletableFuture<>();
promise.completeExceptionally(new UnsupportedOperationException());
return promise;
}
@Override
public CompletableFuture deleteOffloaded(long ledgerId, UUID uid,
Map offloadDriverMetadata) {
CompletableFuture promise = new CompletableFuture<>();
promise.completeExceptionally(new UnsupportedOperationException());
return promise;
}
}