83 lines
3.6 KiB
Java
83 lines
3.6 KiB
Java
/*
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* Copyright (c) 2009, Swedish Institute of Computer Science
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @author Nicolas Tsiftes
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*
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*/
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package org.contikios.coffee;
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import java.io.*;
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import java.util.Properties;
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import org.contikios.coffee.CoffeeFS.CoffeeException;
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public class CoffeeConfiguration {
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public static final int FD_SET_SIZE = 256;
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public static final int MAX_OPEN_FILES = 256;
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public static final int LOG_TABLE_LIMIT = 256;
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public final int nameLength;
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public final int fsSize, sectorSize, pageSize;
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public final int startOffset, pageTypeSize;
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public final int defaultFileSize, defaultLogSize;
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public final int pagesPerSector;
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public final boolean useMicroLogs;
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public CoffeeConfiguration(String filename)
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throws CoffeeException, IOException {
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String[] requiredParameters = {"name_length", "use_micro_logs", "fs_size",
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"page_size", "sector_size",
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"start_offset", "default_file_size",
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"default_log_size", "page_type_size"};
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Properties prop = new Properties();
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InputStream stream = CoffeeConfiguration.class.getResourceAsStream("/" + filename);
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if (stream == null) {
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throw new CoffeeException("failed to load the configuration file " + filename);
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}
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prop.load(stream);
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for (int i = 0; i < requiredParameters.length; i++) {
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if (prop.getProperty(requiredParameters[i]) == null) {
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throw new CoffeeException("missing the parameter \"" + requiredParameters[i] + "\" in the configuration file " + filename);
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}
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}
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nameLength = Integer.parseInt(prop.getProperty("name_length"));
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useMicroLogs = new Boolean(prop.getProperty("use_micro_logs")).booleanValue();
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fsSize = Integer.parseInt(prop.getProperty("fs_size"));
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sectorSize = Integer.parseInt(prop.getProperty("sector_size"));
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pageSize = Integer.parseInt(prop.getProperty("page_size"));
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defaultFileSize = Integer.parseInt(prop.getProperty("default_file_size"));
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defaultLogSize = Integer.parseInt(prop.getProperty("default_log_size"));
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startOffset = Integer.parseInt(prop.getProperty("start_offset"));
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pageTypeSize = Integer.parseInt(prop.getProperty("page_type_size"));
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pagesPerSector = sectorSize / pageSize;
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}
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}
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