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