| /* |
| * 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.accumulo.core.logging; |
| |
| import static org.apache.accumulo.fate.FateTxId.formatTid; |
| |
| import java.io.Serializable; |
| import java.util.EnumSet; |
| import java.util.List; |
| import java.util.function.Function; |
| |
| import org.apache.accumulo.fate.ReadOnlyRepo; |
| import org.apache.accumulo.fate.Repo; |
| import org.apache.accumulo.fate.StackOverflowException; |
| import org.apache.accumulo.fate.TStore; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class FateLogger { |
| private static final String PREFIX = Logging.PREFIX + "fate."; |
| |
| // Logs all mutations to FATEs persistent storage. Enabling this logger could help debug |
| // reproducible problems with FATE transactions. |
| private static final Logger storeLog = LoggerFactory.getLogger(PREFIX + "store"); |
| |
| public static <T> TStore<T> wrap(TStore<T> store, Function<Repo<T>,String> toLogString) { |
| |
| // only logging operations that change the persisted data, not operations that only read data |
| return new TStore<>() { |
| |
| @Override |
| public long reserve() { |
| return store.reserve(); |
| } |
| |
| @Override |
| public void reserve(long tid) { |
| store.reserve(tid); |
| } |
| |
| @Override |
| public void unreserve(long tid, long deferTime) { |
| store.unreserve(tid, deferTime); |
| } |
| |
| @Override |
| public List<ReadOnlyRepo<T>> getStack(long tid) { |
| return store.getStack(tid); |
| } |
| |
| @Override |
| public TStatus getStatus(long tid) { |
| return store.getStatus(tid); |
| } |
| |
| @Override |
| public TStatus waitForStatusChange(long tid, EnumSet<TStatus> expected) { |
| return store.waitForStatusChange(tid, expected); |
| } |
| |
| @Override |
| public Serializable getProperty(long tid, String prop) { |
| return store.getProperty(tid, prop); |
| } |
| |
| @Override |
| public List<Long> list() { |
| return store.list(); |
| } |
| |
| @Override |
| public long timeCreated(long tid) { |
| return store.timeCreated(tid); |
| } |
| |
| @Override |
| public long create() { |
| long tid = store.create(); |
| if (storeLog.isTraceEnabled()) |
| storeLog.trace("created {}", formatTid(tid)); |
| return tid; |
| } |
| |
| @Override |
| public Repo<T> top(long tid) { |
| return store.top(tid); |
| } |
| |
| @Override |
| public void push(long tid, Repo<T> repo) throws StackOverflowException { |
| store.push(tid, repo); |
| if (storeLog.isTraceEnabled()) |
| storeLog.trace("pushed {} {}", formatTid(tid), toLogString.apply(repo)); |
| } |
| |
| @Override |
| public void pop(long tid) { |
| store.pop(tid); |
| if (storeLog.isTraceEnabled()) |
| storeLog.trace("popped {}", formatTid(tid)); |
| } |
| |
| @Override |
| public void setStatus(long tid, TStatus status) { |
| store.setStatus(tid, status); |
| if (storeLog.isTraceEnabled()) |
| storeLog.trace("setStatus {} {}", formatTid(tid), status); |
| } |
| |
| @Override |
| public void setProperty(long tid, String prop, Serializable val) { |
| store.setProperty(tid, prop, val); |
| if (storeLog.isTraceEnabled()) |
| storeLog.trace("setProperty {} {} {}", formatTid(tid), prop, val); |
| } |
| |
| @Override |
| public void delete(long tid) { |
| store.delete(tid); |
| if (storeLog.isTraceEnabled()) |
| storeLog.trace("deleted {}", formatTid(tid)); |
| } |
| }; |
| } |
| } |