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package core;
import prefs.VSPrefs;
import events.*;
import protocols.VSProtocol;
import simulator.*;
public class VSTask {
//public final static int RUN_ON_CLIENT_START = 1;
private long taskTime;
private VSEvent event;
private VSProcess process;
private VSPrefs prefs;
private boolean isProgrammed;
public VSTask(long taskTime, VSProcess process, VSEvent event) {
this.process = process;
this.taskTime = taskTime > 0 ? taskTime : 0;
this.event = event;
this.prefs = process.getPrefs();
}
public void isProgrammed(boolean isProgrammed) {
this.isProgrammed = isProgrammed;
}
public boolean isProgrammed() {
return isProgrammed;
}
public boolean isMessage() {
return event instanceof VSMessage;
}
public boolean isProtocol(VSProtocol protocol) {
if (event instanceof VSProtocol)
return ((VSProtocol) event).equals(protocol);
return false;
}
public boolean isGlobalTimed() {
if (event instanceof VSProtocol)
return false;
return true;
}
public VSProcess getProcess() {
return process;
}
public void run() {
if (process.isCrashed())
return;
if (event instanceof VSMessage) {
onMessageRecv();
} else if (event instanceof VSProtocol) {
/* Lamport time will get incremented by the VSProtocol class */
onProtocolStart();
} else if (event instanceof VSProcessEvent) {
onProcessEventStart();
} else {
onDummy();
}
}
private void onDummy() {
logg(prefs.getString("lang.process.task"));
}
/**
* If the process recv a message, check if the message's protocol is activated
* by the process. If yes, run the protocol on the message! If not, just logg
* that the process does not support this protocol! The process will ignore the
* message!
*/
private void onMessageRecv() {
final VSMessage message = (VSMessage) event;
final String protocolName = message.getProtocolName();
final String protocolClassname = message.getProtocolClassname();
process.updateLamportTime(message.getLamportTime()+1);
process.updateVectorTime(message.getVectorTime());
Object protocolObj;
if (process.objectExists(protocolClassname))
protocolObj = process.getObject(protocolClassname);
else
protocolObj = null;
String loggVSMessage = prefs.getString("lang.message.recv")
+ "; " + prefs.getString("lang.protocol") + ": " + protocolName
+ "; " + prefs.getString("lang.message") + " " + message;
if (protocolObj == null) {
logg(loggVSMessage);
} else {
final VSProtocol protocol = (VSProtocol) protocolObj;
logg(loggVSMessage);
protocol.onMessageRecv(message);
}
}
private void onProtocolStart() {
((VSProtocol) event).onStart();
}
private void onProcessEventStart() {
final VSProcessEvent processEvent = (VSProcessEvent) event;
processEvent.onStart();
}
public long getTaskTime() {
return taskTime;
}
public VSEvent getEvent() {
return event;
}
private void logg(String message) {
process.logg(message);
}
public String toString() {
String descr = "VSTask: " + getTaskTime();
if (event instanceof VSMessage)
descr += (VSMessage) event;
else if (event instanceof VSProtocol)
descr += (VSProtocol) event;
return descr;
}
}
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