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297 lines
11 KiB
297 lines
11 KiB
// serverAbstractSwitch.java
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// -------------------------------------
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// (C) by Michael Peter Christen; mc@anomic.de
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004, 2005
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// last major change: 24.03.2005
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// Using this software in any meaning (reading, learning, copying, compiling,
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// running) means that you agree that the Author(s) is (are) not responsible
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// for cost, loss of data or any harm that may be caused directly or indirectly
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// by usage of this softare or this documentation. The usage of this software
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// is on your own risk. The installation and usage (starting/running) of this
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// software may allow other people or application to access your computer and
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// any attached devices and is highly dependent on the configuration of the
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// software which must be done by the user of the software; the author(s) is
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// (are) also not responsible for proper configuration and usage of the
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// software, even if provoked by documentation provided together with
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// the software.
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//
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// Any changes to this file according to the GPL as documented in the file
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// gpl.txt aside this file in the shipment you received can be done to the
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// lines that follows this copyright notice here, but changes must not be
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// done inside the copyright notive above. A re-distribution must contain
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// the intact and unchanged copyright notice.
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// Contributions and changes to the program code must be marked as such.
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package de.anomic.server;
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import java.io.*;
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import java.net.*;
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import java.util.*;
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public abstract class serverAbstractSwitch implements serverSwitch {
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// configuration management
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private final File configFile;
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private Hashtable configProps;
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private final String configComment;
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private final Hashtable authorization;
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private String rootPath;
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private final TreeMap workerThreads;
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protected int serverJobs;
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public serverAbstractSwitch(String rootPath, String initPath, String configPath) throws IOException {
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// we initialize the switchboard with a property file,
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// but maintain these properties then later in a new 'config' file
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// to reset all changed configs, the config file must
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// be deleted, but not the init file
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// the only attribute that will always be read from the init is the
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// file name of the config file
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this.rootPath = rootPath;
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configComment = "this is an automaticaly generated file, updated by serverAbstractSwitch and initialized by " + initPath;
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File initFile = new File(rootPath, initPath);
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configFile = new File(rootPath, configPath); //propertiesFile(config);
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new File(configFile.getParent()).mkdir();
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// predefine init's
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Hashtable initProps;
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if (initFile.exists()) initProps = loadHashtable(initFile); else initProps = new Hashtable();
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// load config's from last save
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if (configFile.exists()) configProps = loadHashtable(configFile); else configProps = new Hashtable();
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// remove all values from config that do not appear in init (out-dated settings)
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Enumeration e = configProps.keys();
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String key;
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while (e.hasMoreElements()) {
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key = (String) e.nextElement();
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//System.out.println("TESTING " + key);
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if (!(initProps.containsKey(key))) {
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//System.out.println("MIGRATE: removing out-dated property '" + key + "'");
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configProps.remove(key);
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}
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}
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// merge new props from init to config
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// this is necessary for migration, when new properties are attached
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initProps.putAll(configProps);
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configProps = initProps;
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// save result; this may initially create a config file after initialization
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saveConfig();
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// other settings
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authorization = new Hashtable();
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// init thread control
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workerThreads = new TreeMap();
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// init busy state control
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serverJobs = 0;
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}
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public static Hashtable loadHashtable(File f) {
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// load props
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Properties prop = new Properties();
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try {
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prop.load(new FileInputStream(f));
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} catch (IOException e1) {
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System.err.println("ERROR: " + f.toString() + " not found in settings path");
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prop = null;
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}
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return (Hashtable) prop;
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}
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public static void saveHashtable(File f, Hashtable props, String comment) throws IOException {
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PrintWriter pw = new PrintWriter(new FileOutputStream(f));
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pw.println("# " + comment);
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Enumeration e = props.keys();
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String key, value;
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while (e.hasMoreElements()) {
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key = (String) e.nextElement();
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//value = (String) props.get(key);
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value = ((String) props.get(key)).replaceAll("\n", "\\\\n");
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pw.println(key + "=" + value);
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}
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pw.println("# EOF");
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pw.close();
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}
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public void setConfig(String key, long value) {
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setConfig(key, "" + value);
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}
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public void setConfig(String key, String value) {
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configProps.put(key, value);
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saveConfig();
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}
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public String getConfig(String key, String dflt) {
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String s = (String) configProps.get(key);
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if (s == null) return dflt; else return s;
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}
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public Enumeration configKeys() {
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return configProps.keys();
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}
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private void saveConfig() {
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try {
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saveHashtable(configFile, configProps, configComment);
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} catch (IOException e) {
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System.out.println("ERROR: cannot write config file " + configFile.toString() + ": " + e.getMessage());
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}
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}
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public void deployThread(String threadName, String threadShortDescription, String threadLongDescription, serverThread newThread, serverLog log, long startupDelay) {
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deployThread(threadName, threadShortDescription, threadLongDescription,
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newThread, log, startupDelay,
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Long.parseLong(getConfig(threadName + "_idlesleep" , "novalue")),
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Long.parseLong(getConfig(threadName + "_busysleep" , "novalue")));
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}
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public void deployThread(String threadName, String threadShortDescription, String threadLongDescription, serverThread newThread, serverLog log, long startupDelay, long initialIdleSleep, long initialBusySleep) {
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if (newThread.isAlive()) throw new RuntimeException("undeployed threads must not live; they are started as part of the deployment");
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newThread.setStartupSleep(startupDelay);
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long sleep;
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try {
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sleep = Long.parseLong(getConfig(threadName + "_idlesleep" , "novalue"));
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newThread.setIdleSleep(sleep);
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} catch (NumberFormatException e) {
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newThread.setIdleSleep(initialIdleSleep);
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setConfig(threadName + "_idlesleep", initialIdleSleep);
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}
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try {
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sleep = Long.parseLong(getConfig(threadName + "_busysleep" , "novalue"));
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newThread.setBusySleep(sleep);
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} catch (NumberFormatException e) {
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newThread.setBusySleep(initialBusySleep);
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setConfig(threadName + "_busysleep", initialBusySleep);
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}
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newThread.setLog(log);
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newThread.setDescription(threadShortDescription, threadLongDescription);
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workerThreads.put(threadName, newThread);
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// start the thread
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if (workerThreads.containsKey(threadName)) newThread.start();
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}
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public serverThread getThread(String threadName) {
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return (serverThread) workerThreads.get(threadName);
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}
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public void setThreadSleep(String threadName, long idleMillis, long busyMillis) {
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serverThread thread = (serverThread) workerThreads.get(threadName);
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if (thread != null) {
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thread.setIdleSleep(idleMillis);
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thread.setBusySleep(busyMillis);
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}
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}
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public synchronized void terminateThread(String threadName, boolean waitFor) {
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if (workerThreads.containsKey(threadName)) {
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((serverThread) workerThreads.get(threadName)).terminate(waitFor);
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workerThreads.remove(threadName);
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}
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}
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public synchronized void terminateAllThreads(boolean waitFor) {
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Iterator e = workerThreads.keySet().iterator();
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while (e.hasNext()) {
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((serverThread) workerThreads.get((String) e.next())).terminate(false);
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}
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if (waitFor) {
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e = workerThreads.keySet().iterator();
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while (e.hasNext()) {
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((serverThread) workerThreads.get((String) e.next())).terminate(true);
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e.remove();
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}
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}
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}
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public Iterator /*of serverThread-Names (String)*/ threadNames() {
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return workerThreads.keySet().iterator();
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}
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abstract public int queueSize();
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abstract public void enQueue(Object job);
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abstract public boolean deQueue();
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// authentification routines:
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public void setAuthentify(InetAddress host, String user, String rights) {
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// sets access attributes according to host addresses
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authorization.put(host, user + "@" + rights);
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}
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public void removeAuthentify(InetAddress host) {
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// remove access attributes according to host addresses
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authorization.remove(host);
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}
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public String getAuthentifyUser(InetAddress host) {
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// read user name according to host addresses
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String a = (String) authorization.get(host);
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if (a == null) return null;
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int p = a.indexOf("@");
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if (p < 0) return null;
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return a.substring(0, p);
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}
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public String getAuthentifyRights(InetAddress host) {
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// read access rigths according to host addresses
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String a = (String) authorization.get(host);
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if (a == null) return null;
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int p = a.indexOf("@");
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if (p < 0) return null;
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return a.substring(p + 1);
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}
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public void addAuthentifyRight(InetAddress host, String right) {
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String rights = getAuthentifyRights(host);
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if (rights == null) {
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// create new authentification
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setAuthentify(host, "unknown", right);
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} else {
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// add more authentification
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String user = getAuthentifyUser(host);
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setAuthentify(host, user, rights + right);
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}
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}
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public boolean hasAuthentifyRight(InetAddress host, String right) {
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String rights = getAuthentifyRights(host);
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if (rights == null) return false;
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return rights.indexOf(right) >= 0;
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}
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public abstract serverObjects action(String actionName, serverObjects actionInput);
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public String getRootPath() {
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return rootPath;
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}
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public String toString() {
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return configProps.toString();
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}
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public void handleBusyState(int jobs) {
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serverJobs = jobs;
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}
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}
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