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//---PACKAGE DECLARATION--- |
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package uk.ac.ukc.iscream.filter; |
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package uk.org.iscream.cms.server.filter; |
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//---IMPORTS--- |
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import uk.ac.ukc.iscream.core.*; |
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import uk.ac.ukc.iscream.filter.*; |
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import uk.ac.ukc.iscream.componentmanager.*; |
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import uk.org.iscream.cms.server.core.*; |
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import uk.org.iscream.cms.server.filter.*; |
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import uk.org.iscream.cms.server.componentmanager.*; |
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import java.net.Socket; |
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import java.io.InputStream; |
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import java.io.OutputStream; |
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import java.io.IOException; |
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import java.io.*; |
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import uk.ac.ukc.iscream.util.*; |
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import java.util.Random; |
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import uk.org.iscream.cms.server.util.*; |
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/** |
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* This provides Host heartbeat functionality |
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*/ |
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public void run() { |
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try { |
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//variables |
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String filelist = ""; |
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String lastModified = ""; |
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String inBound = ""; |
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// get an instance of the KeyManager |
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KeyManager keyman = KeyManager.getInstance(); |
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// get some information about the host |
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String hostname = _socket.getInetAddress().getHostName().toLowerCase(); |
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String ipadd = _socket.getInetAddress().getHostAddress(); |
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// try for HEARTBEAT |
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getInBound("HEARTBEAT"); |
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_socketOut.println("OK"); |
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// try for CONFIG |
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getInBound("CONFIG"); |
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_socketOut.println("OK"); |
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// try for {filelist} |
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filelist = getInBound(); |
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_socketOut.println("OK"); |
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// try for {lastModified} |
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lastModified = getInBound(); |
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// check to see if a config update has happen |
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boolean newConfig = _configManager.isModified(filelist, Long.parseLong(lastModified)); |
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if(newConfig) { |
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// new config ! |
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_socketOut.println("ERROR"); |
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// look for a command: |
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// CONFIG - to check config |
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// KEY - to get the key |
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// ENDHEARTBEAT - to finish |
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String cmd = getInBound(); |
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while(!cmd.equals("ENDHEARTBEAT")) { |
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if(cmd.equals("CONFIG")) { |
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// respond to CONFIG |
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_socketOut.println("OK"); |
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// try for {filelist} |
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String filelist = getInBound(); |
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_socketOut.println("OK"); |
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// try for {lastModified} |
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String lastModified = getInBound(); |
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// check to see if a config update has happen |
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boolean newConfig = _configManager.isModified(filelist, Long.parseLong(lastModified)); |
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if(newConfig) { |
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// new config ! |
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_socketOut.println("ERROR"); |
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} |
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else { |
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// nothing has changed |
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_socketOut.println("OK"); |
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} |
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} |
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else if(cmd.equals("KEY")) { |
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// repsond to KEY |
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// generate a key |
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String key = keyman.genKey(); |
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// send key to host |
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_socketOut.println(key); |
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// add it to the key manager |
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keyman.addKey(hostname, key); |
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} |
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else { |
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_socketOut.println("ERROR"); |
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} |
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// get the next command |
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cmd = getInBound(); |
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} |
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else { |
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// nothing has changed |
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_socketOut.println("OK"); |
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} |
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// try for CONFIG |
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getInBound("ENDHEARTBEAT"); |
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// respond to ENDHEARTBEAT |
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_socketOut.println("OK"); |
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// work out some information for our heartbeat packet |
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String date = new Long(System.currentTimeMillis()/((long) 1000)).toString(); //seconds |
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String hostname = _socket.getInetAddress().getHostName().toLowerCase(); |
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String ipadd = _socket.getInetAddress().getHostAddress(); |
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// run the service checks for this host |
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_logger.write(toString(), Logger.DEBUG, "Running service checks"); |
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* Overrides the {@link java.lang.Object#toString() Object.toString()} |
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* method to provide clean logging (every class should have this). |
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* |
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* This uses the uk.ac.ukc.iscream.util.NameFormat class |
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* This uses the uk.org.iscream.cms.server.util.NameFormat class |
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* to format the toString() |
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* |
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* @return the name of this class and its CVS revision |
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String inBound = getInBound(); |
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// check if it's what we're expecting |
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if(!inBound.equals(expected)) { |
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throw new IOException("protocol error - expected:"+expected+" got:" + inBound); |
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throw new IOException("protocol error from "+_socket.getInetAddress().getHostName()+" - expected:"+expected+" got:" + inBound); |
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} |
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// it should be ok then |
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return inBound; |
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// it's a valid message it seems |
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return inBound; |
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} |
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//---ACCESSOR/MUTATOR METHODS--- |
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//---ATTRIBUTES--- |
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* A reference to our Queue |
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*/ |
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Queue _queue; |
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//---STATIC ATTRIBUTES--- |
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} |
