| /* |
| * Copyright 2009-2012 by The Regents of the University of California |
| * Licensed 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 from |
| * |
| * 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 edu.uci.ics.asterix.transaction.management.service.logging; |
| |
| import java.io.Serializable; |
| import java.util.Properties; |
| |
| public class LogManagerProperties implements Serializable { |
| |
| private static final long serialVersionUID = 2084227360840799662L; |
| |
| public static final int LOG_MAGIC_NUMBER = 123456789; |
| public static final String LOG_DIR_SUFFIX_KEY = ".txnLogDir"; |
| public static final String LOG_PAGE_SIZE_KEY = "log_page_size"; |
| public static final String LOG_PARTITION_SIZE_KEY = "log_partition_size"; |
| public static final String NUM_LOG_PAGES_KEY = "num_log_pages"; |
| public static final String LOG_FILE_PREFIX_KEY = "log_file_prefix"; |
| public static final String GROUP_COMMIT_WAIT_PERIOD_KEY = "group_commit_wait_period"; |
| |
| private static final int DEFAULT_LOG_PAGE_SIZE = 128 * 1024; //128KB |
| private static final int DEFAULT_NUM_LOG_PAGES = 8; |
| private static final long DEFAULT_LOG_PARTITION_SIZE = (long) 1024 * 1024 * 1024 * 2; //2GB |
| private static final long DEFAULT_GROUP_COMMIT_WAIT_PERIOD = 1; // time in millisec. |
| private static final String DEFAULT_LOG_FILE_PREFIX = "asterix_transaction_log"; |
| private static final String DEFAULT_LOG_DIRECTORY = "asterix_logs/"; |
| |
| // follow the naming convention <logFilePrefix>_<number> where number starts from 0 |
| private final String logFilePrefix; |
| private final String logDir; |
| public String logDirKey; |
| |
| // number of log pages in the log buffer |
| private final int logPageSize; |
| // number of log pages in the log buffer. |
| private final int numLogPages; |
| // time in milliseconds |
| private final long groupCommitWaitPeriod; |
| // logBufferSize = logPageSize * numLogPages; |
| private final int logBufferSize; |
| // maximum size of each log file |
| private final long logPartitionSize; |
| |
| public LogManagerProperties(Properties properties, String nodeId) { |
| this.logDirKey = new String(nodeId + LOG_DIR_SUFFIX_KEY); |
| this.logPageSize = Integer.parseInt(properties.getProperty(LOG_PAGE_SIZE_KEY, "" + DEFAULT_LOG_PAGE_SIZE)); |
| this.numLogPages = Integer.parseInt(properties.getProperty(NUM_LOG_PAGES_KEY, "" + DEFAULT_NUM_LOG_PAGES)); |
| long logPartitionSize = Long.parseLong(properties.getProperty(LOG_PARTITION_SIZE_KEY, "" |
| + DEFAULT_LOG_PARTITION_SIZE)); |
| this.logDir = properties.getProperty(logDirKey, DEFAULT_LOG_DIRECTORY + nodeId); |
| this.logFilePrefix = properties.getProperty(LOG_FILE_PREFIX_KEY, DEFAULT_LOG_FILE_PREFIX); |
| this.groupCommitWaitPeriod = Long.parseLong(properties.getProperty(GROUP_COMMIT_WAIT_PERIOD_KEY, "" |
| + DEFAULT_GROUP_COMMIT_WAIT_PERIOD)); |
| |
| this.logBufferSize = logPageSize * numLogPages; |
| //make sure that the log partition size is the multiple of log buffer size. |
| this.logPartitionSize = (logPartitionSize / logBufferSize) * logBufferSize; |
| } |
| |
| public long getLogPartitionSize() { |
| return logPartitionSize; |
| } |
| |
| public String getLogFilePrefix() { |
| return logFilePrefix; |
| } |
| |
| public String getLogDir() { |
| return logDir; |
| } |
| |
| public int getLogPageSize() { |
| return logPageSize; |
| } |
| |
| public int getNumLogPages() { |
| return numLogPages; |
| } |
| |
| public int getLogBufferSize() { |
| return logBufferSize; |
| } |
| |
| public long getGroupCommitWaitPeriod() { |
| return groupCommitWaitPeriod; |
| } |
| |
| public String getLogDirKey() { |
| return logDirKey; |
| } |
| |
| public String toString() { |
| StringBuilder builder = new StringBuilder(); |
| builder.append("log_dir_ : " + logDir + FileUtil.lineSeparator); |
| builder.append("log_file_prefix" + logFilePrefix + FileUtil.lineSeparator); |
| builder.append("log_page_size : " + logPageSize + FileUtil.lineSeparator); |
| builder.append("num_log_pages : " + numLogPages + FileUtil.lineSeparator); |
| builder.append("log_partition_size : " + logPartitionSize + FileUtil.lineSeparator); |
| builder.append("group_commit_wait_period : " + groupCommitWaitPeriod + FileUtil.lineSeparator); |
| return builder.toString(); |
| } |
| } |