| /* |
| * 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.jena.dboe.transaction; |
| |
| import java.nio.ByteBuffer; |
| |
| import org.apache.jena.atlas.logging.FmtLog; |
| import org.apache.jena.dboe.transaction.txn.ComponentId; |
| import org.apache.jena.dboe.transaction.txn.SysTransState; |
| import org.apache.jena.dboe.transaction.txn.Transaction; |
| import org.apache.jena.dboe.transaction.txn.TransactionalComponent; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Logging for transaction steps. This class is stateless in the transaction. |
| * When operations are called in the {@link TransactionalComponent} lifecycle, |
| * it logs the event. |
| */ |
| |
| public class TransLogger implements TransactionalComponent { |
| private final Logger log; |
| private final boolean everyEvent; |
| |
| /** Create a logger for begin-commit/abort-end */ |
| public TransLogger() { |
| this(null, false); |
| } |
| |
| /** Create a logger, either just begin-commit/abort-end or all steps */ |
| public TransLogger(Logger logger) { |
| this(logger, false); |
| } |
| |
| /** Create a logger, either just begin-commit/abort-end or all steps */ |
| public TransLogger(Logger logger, boolean all) { |
| if ( logger == null ) |
| logger = LoggerFactory.getLogger(TransLogger.class); |
| this.log = logger; |
| this.everyEvent = all; |
| } |
| |
| @Override |
| public ComponentId getComponentId() { |
| // if ( everyEvent ) |
| // log.info("getComponentId"); |
| return null; |
| } |
| |
| @Override |
| public void startRecovery() { |
| if ( everyEvent ) |
| log.info("startRecovery"); |
| } |
| |
| @Override |
| public void recover(ByteBuffer ref) { |
| // Is not called because this compoent vener writes a redo/undo action to the log. |
| if ( everyEvent ) |
| log.info("recover"); |
| } |
| |
| @Override |
| public void finishRecovery() { |
| if ( everyEvent ) |
| log.info("finishRecovery"); |
| } |
| |
| @Override |
| public void cleanStart() { |
| if ( everyEvent ) |
| log.info("cleanStart"); |
| } |
| |
| @Override |
| public void begin(Transaction transaction) { |
| txnStep("begin", transaction); |
| } |
| |
| @Override |
| public boolean promote(Transaction transaction) { |
| txnStep("promote", transaction); |
| return true; |
| } |
| |
| @Override |
| public ByteBuffer commitPrepare(Transaction transaction) { |
| if ( everyEvent ) |
| txnStep("commitPrepare", transaction); |
| return null; |
| } |
| |
| @Override |
| public void commit(Transaction transaction) { |
| txnStep("commit", transaction); |
| } |
| |
| @Override |
| public void commitEnd(Transaction transaction) { |
| if ( everyEvent ) |
| txnStep("commitEnd", transaction); |
| } |
| |
| @Override |
| public void abort(Transaction transaction) { |
| txnStep("abort", transaction); |
| } |
| |
| @Override |
| public void complete(Transaction transaction) { |
| txnStep("complete", transaction); |
| } |
| |
| @Override |
| public SysTransState detach() { |
| log.info("detach"); |
| return null; |
| } |
| |
| @Override |
| public void attach(SysTransState systemState) { |
| log.info("attach"); |
| } |
| |
| @Override |
| public void shutdown() { |
| if ( everyEvent ) |
| log.info("shutdown"); |
| } |
| |
| private void txnStep(String opName, Transaction transaction) { |
| FmtLog.info(log, "%-8s %s", transaction.getTxnId(), opName); |
| } |
| |
| } |
| |