| /** |
| * 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 com.twitter.distributedlog.stats; |
| |
| import org.apache.bookkeeper.client.BKException.Code; |
| import org.apache.bookkeeper.stats.Counter; |
| import org.apache.bookkeeper.stats.StatsLogger; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * A Util to logger stats on bk exceptions. |
| */ |
| public class BKExceptionStatsLogger { |
| |
| public static String getMessage(int code) { |
| switch (code) { |
| case Code.OK: |
| return "OK"; |
| case Code.ReadException: |
| return "ReadException"; |
| case Code.QuorumException: |
| return "QuorumException"; |
| case Code.NoBookieAvailableException: |
| return "NoBookieAvailableException"; |
| case Code.DigestNotInitializedException: |
| return "DigestNotInitializedException"; |
| case Code.DigestMatchException: |
| return "DigestMatchException"; |
| case Code.NotEnoughBookiesException: |
| return "NotEnoughBookiesException"; |
| case Code.NoSuchLedgerExistsException: |
| return "NoSuchLedgerExistsException"; |
| case Code.BookieHandleNotAvailableException: |
| return "BookieHandleNotAvailableException"; |
| case Code.ZKException: |
| return "ZKException"; |
| case Code.LedgerRecoveryException: |
| return "LedgerRecoveryException"; |
| case Code.LedgerClosedException: |
| return "LedgerClosedException"; |
| case Code.WriteException: |
| return "WriteException"; |
| case Code.NoSuchEntryException: |
| return "NoSuchEntryException"; |
| case Code.IncorrectParameterException: |
| return "IncorrectParameterException"; |
| case Code.InterruptedException: |
| return "InterruptedException"; |
| case Code.ProtocolVersionException: |
| return "ProtocolVersionException"; |
| case Code.MetadataVersionException: |
| return "MetadataVersionException"; |
| case Code.LedgerFencedException: |
| return "LedgerFencedException"; |
| case Code.UnauthorizedAccessException: |
| return "UnauthorizedAccessException"; |
| case Code.UnclosedFragmentException: |
| return "UnclosedFragmentException"; |
| case Code.WriteOnReadOnlyBookieException: |
| return "WriteOnReadOnlyBookieException"; |
| case Code.IllegalOpException: |
| return "IllegalOpException"; |
| default: |
| return "UnexpectedException"; |
| } |
| } |
| |
| private final StatsLogger parentLogger; |
| private final Map<Integer, Counter> exceptionCounters; |
| |
| public BKExceptionStatsLogger(StatsLogger parentLogger) { |
| this.parentLogger = parentLogger; |
| this.exceptionCounters = new HashMap<Integer, Counter>(); |
| } |
| |
| public Counter getExceptionCounter(int rc) { |
| Counter counter = exceptionCounters.get(rc); |
| if (null != counter) { |
| return counter; |
| } |
| // TODO: it would be better to have BKException.Code.get(rc) |
| synchronized (exceptionCounters) { |
| counter = exceptionCounters.get(rc); |
| if (null != counter) { |
| return counter; |
| } |
| counter = parentLogger.getCounter(getMessage(rc)); |
| exceptionCounters.put(rc, counter); |
| } |
| return counter; |
| } |
| } |