| /* |
| * |
| * 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.bookie; |
| |
| import java.util.function.LongPredicate; |
| |
| import org.apache.bookkeeper.util.collections.ConcurrentLongLongHashMap; |
| |
| /** |
| * Records the total size, remaining size and the set of ledgers that comprise a entry log. |
| */ |
| public class EntryLogMetadata { |
| private final long entryLogId; |
| private long totalSize; |
| private long remainingSize; |
| private final ConcurrentLongLongHashMap ledgersMap; |
| |
| public EntryLogMetadata(long logId) { |
| this.entryLogId = logId; |
| |
| totalSize = remainingSize = 0; |
| ledgersMap = new ConcurrentLongLongHashMap(256, 1); |
| } |
| |
| public void addLedgerSize(long ledgerId, long size) { |
| totalSize += size; |
| remainingSize += size; |
| ledgersMap.addAndGet(ledgerId, size); |
| } |
| |
| public boolean containsLedger(long ledgerId) { |
| return ledgersMap.containsKey(ledgerId); |
| } |
| |
| public double getUsage() { |
| if (totalSize == 0L) { |
| return 0.0f; |
| } |
| return (double) remainingSize / totalSize; |
| } |
| |
| public boolean isEmpty() { |
| return ledgersMap.isEmpty(); |
| } |
| |
| public long getEntryLogId() { |
| return entryLogId; |
| } |
| |
| public long getTotalSize() { |
| return totalSize; |
| } |
| |
| public long getRemainingSize() { |
| return remainingSize; |
| } |
| |
| public ConcurrentLongLongHashMap getLedgersMap() { |
| return ledgersMap; |
| } |
| |
| public void removeLedgerIf(LongPredicate predicate) { |
| ledgersMap.removeIf((ledgerId, size) -> { |
| boolean shouldRemove = predicate.test(ledgerId); |
| if (shouldRemove) { |
| remainingSize -= size; |
| } |
| return shouldRemove; |
| }); |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("{ totalSize = ").append(totalSize).append(", remainingSize = ").append(remainingSize) |
| .append(", ledgersMap = ").append(ledgersMap).append(" }"); |
| return sb.toString(); |
| } |
| |
| } |