| /** |
| * 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.distributedlog.impl.logsegment; |
| |
| import com.google.common.collect.Lists; |
| import java.util.concurrent.CompletableFuture; |
| import org.apache.distributedlog.common.functions.VoidFunctions; |
| import org.apache.distributedlog.common.concurrent.FutureUtils; |
| import org.apache.bookkeeper.client.AsyncCallback; |
| import org.apache.bookkeeper.client.BKException; |
| import org.apache.bookkeeper.client.LedgerHandle; |
| |
| import java.util.List; |
| |
| /** |
| * BookKeeper Util Functions |
| */ |
| public class BKUtils { |
| |
| /** |
| * Close a ledger <i>lh</i>. |
| * |
| * @param lh ledger handle |
| * @return future represents close result. |
| */ |
| public static CompletableFuture<Void> closeLedger(LedgerHandle lh) { |
| final CompletableFuture<Void> closePromise = new CompletableFuture<Void>(); |
| lh.asyncClose(new AsyncCallback.CloseCallback() { |
| @Override |
| public void closeComplete(int rc, LedgerHandle lh, Object ctx) { |
| if (BKException.Code.OK != rc) { |
| FutureUtils.completeExceptionally(closePromise, BKException.create(rc)); |
| } else { |
| FutureUtils.complete(closePromise, null); |
| } |
| } |
| }, null); |
| return closePromise; |
| } |
| |
| /** |
| * Close a list of ledgers <i>lhs</i>. |
| * |
| * @param lhs a list of ledgers |
| * @return future represents close results. |
| */ |
| public static CompletableFuture<Void> closeLedgers(LedgerHandle ... lhs) { |
| List<CompletableFuture<Void>> closeResults = Lists.newArrayListWithExpectedSize(lhs.length); |
| for (LedgerHandle lh : lhs) { |
| closeResults.add(closeLedger(lh)); |
| } |
| return FutureUtils.collect(closeResults).thenApply(VoidFunctions.LIST_TO_VOID_FUNC); |
| } |
| |
| } |