+++ /dev/null
-/*
- * Copyright (c) 2003-2005 The BISON Project
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-package peersim.transport;
-
-import java.io.*;
-
-import peersim.config.*;
-import peersim.core.*;
-
-/**
- * Initializes static singleton {@link E2ENetwork} by reading a trace
- * file containing the latency distance measured between a set of
- * "virtual" routers. Latency is assumed to be symmetric, so the
- * latency between x and y is equal to the latency to y and x.
- *
- * The format of the file is as follows: all values are stored as
- * integers. The first value is the number of nodes considered.
- * The rest of the values correspond to a "strictly upper triangular
- * matrix" (see this
- * <a href="http://en.wikipedia.org/w/index.php?title=Triangular_matrix&oldid=82411128">
- * link</a>), ordered first by row than by column.
- *
- * @author Alberto Montresor
- * @version $Revision: 1.4 $
- */
-public class TriangularMatrixParser implements Control
-{
-
-// ---------------------------------------------------------------------
-// Parameters
-// ---------------------------------------------------------------------
-
-/**
- * This configuration parameter identifies the filename of the file
- * containing the measurements. First, the file is used as a pathname
- * in the local file system. If no file can be identified in this way,
- * the file is searched in the local classpath. If the file cannot be
- * identified again, an error message is reported.
- * @config
- */
-private static final String PAR_FILE = "file";
-
-/**
- * The ratio between the time units used in the configuration file and the
- * time units used in the Peersim simulator.
- * @config
- */
-private static final String PAR_RATIO = "ratio";
-
-// ---------------------------------------------------------------------
-// Fields
-// ---------------------------------------------------------------------
-
-/** Name of the file containing the measurements. */
-private String filename;
-
-/** Ratio read from PAR_RATIO */
-private double ratio;
-
-// ---------------------------------------------------------------------
-// Initialization
-// ---------------------------------------------------------------------
-
-/**
- * Read the configuration parameters.
- */
-public TriangularMatrixParser(String prefix)
-{
- filename = Configuration.getString(prefix + "." + PAR_FILE);
- ratio = Configuration.getDouble(prefix + "." + PAR_RATIO);
-}
-
-// ---------------------------------------------------------------------
-// Methods
-// ---------------------------------------------------------------------
-
-/**
- * Initializes static singleton {@link E2ENetwork} by reading a king data set.
-* @return always false
-*/
-public boolean execute()
-{
- try {
- ObjectInputStream in = null;
- try {
- in = new ObjectInputStream(
- new BufferedInputStream(
- new FileInputStream(filename)));
- System.err.println("TriangularMatrixParser: Reading " + filename + " from local file system");
- } catch (FileNotFoundException e) {
- in = new ObjectInputStream(
- new BufferedInputStream(
- ClassLoader.getSystemResourceAsStream(filename)));
- System.err.println("TriangularMatrixParser: Reading " + filename + " through the class loader");
- }
-
- // Read the number of nodes in the file (first four bytes).
- int size = in.readInt();
-
- // Reset the E2E network
- E2ENetwork.reset(size, true);
- System.err.println("TriangularMatrixParser: reading " + size + " rows");
-
- // If the file format is not correct, data will be read
- // incorrectly. Probably a good way to spot this is the
- // presence of negative delays, or an end of file.
-
- // Reading data
- int count = 0;
- for (int r=0; r < size; r++) {
- for (int c = r+1; c < size; c++) {
- int x = (int) (ratio*in.readInt());
- count++;
- E2ENetwork.setLatency(r,c,x);
- }
- }
- System.err.println("TriangularMatrixParser: Read " + count + " entries");
- } catch (IOException e) {
- throw new RuntimeException(e.getMessage());
- }
- return false;
-}
-
-}
