/** Stops the execution of the thread. */
public void stop() {
basic.Logger.append("Killing this node...");
this.killNode();
basic.Logger.append("..");
if (!basic.Global.SIMPLE) {
basic.Logger.inf(
"find_successor has been called " + basic.HopsAndTime.search_counter + " times");
basic.Logger.inf("Average hops/find_successor: " + basic.HopsAndTime.getAvgHops());
basic.Logger.inf("Average execution time/find_successor: " + basic.HopsAndTime.getAvgTime());
}
basic.Logger.append("..");
receivemulticast.stop();
basic.Logger.append(".");
MulticastSender fixmulticast;
if (!basic.Global.SIMPLE) {
try {
fixmulticast =
new networking.MulticastSender(
1101, "224.1.1.1", ("fix " + node.getPid()).getBytes(), node);
fixmulticast.start();
basic.Logger.append(".");
try {
fixmulticast.getThread().join();
} catch (InterruptedException ex) {
Logger.getLogger(DJchord.class.getName()).log(Level.SEVERE, null, ex);
}
} catch (RemoteException ex) {
Logger.getLogger(DJchord.class.getName()).log(Level.SEVERE, null, ex);
}
}
basic.Logger.append(".");
runner.interrupt();
runner = null;
basic.Logger.appendln("done!");
}
/** This method return the node successor. */
public String getRMIInfo() {
String returnval = "FAIL!!!";
try {
returnval = node.getSuccessor().getRMIInfo();
} catch (RemoteException ex) {
basic.Logger.war("The successors seems down... :(");
try {
node.joinedStabilize();
node.fixFingers();
} catch (RemoteException remoteException) {
basic.Logger.err(remoteException.getMessage());
}
basic.Logger.err(ex.getMessage());
}
return returnval;
}
/** This method terminates the node. */
public void killNode() {
try {
RemoteNode successor = this.node.getSuccessor(), predecessor = this.node.getPredecessor();
this.node.exit();
} catch (RemoteException remoteException) {
basic.Logger.war("Couldn't exit properly!");
}
}
/** Prints all the chord files. */
public void getFiles() {
try {
basic.Logger.appendln("My files are");
String[] files = node.getFile_keys();
for (int i = 0; i < files.length; i++) {
basic.Logger.appendln(files[i]);
}
for (RemoteNode i = node.getSuccessor();
!i.getPid().equalsIgnoreCase(node.getPid());
i = i.getSuccessor()) {
files = i.getFile_keys();
basic.Logger.appendln("My next successor files are: ");
for (int j = 0; j < files.length; j++) {
basic.Logger.appendln(files[j]);
}
}
} catch (RemoteException ex) {
basic.Logger.err("The successors seems down... :(");
try {
node.joinedStabilize();
} catch (RemoteException remoteException) {
basic.Logger.err(remoteException.getMessage());
}
basic.Logger.err(ex.getMessage());
}
}
/** This method prints all the next successors and their hashes. */
public void showAllSuccessors() {
try {
basic.Logger.appendln(
"I'm " + node.getRMIInfo() + " with hash:\n" + node.getKey().getStringHash());
basic.Logger.inf("I'm " + node.getRMIInfo());
for (RemoteNode i = node.getSuccessor();
!i.getPid().equalsIgnoreCase(node.getPid());
i = i.getSuccessor()) {
basic.Logger.appendln(
"My next successor is "
+ i.getRMIInfo()
+ " with hash:\n"
+ i.getKey().getStringHash());
basic.Logger.inf("My next successor is " + i.getRMIInfo());
}
} catch (RemoteException ex) {
basic.Logger.err("The successors seems down... :(");
try {
node.joinedStabilize();
} catch (RemoteException remoteException) {
basic.Logger.err(remoteException.getMessage());
}
basic.Logger.err(ex.getMessage());
}
}
/** Is invoked by start() */
public void run() {
try {
node = new Node();
} catch (RemoteException ex) {
basic.Logger.err(ex.getMessage());
} catch (NoSuchAlgorithmException ex) {
basic.Logger.err(ex.getMessage());
} catch (UnsupportedEncodingException ex) {
basic.Logger.err(ex.getMessage());
}
try {
sendmulticast = new MulticastSender(1101, "224.1.1.1", node.getPid().getBytes(), node);
} catch (RemoteException ex) {
basic.Logger.err(ex.getMessage());
}
sendmulticast.start();
try {
sendmulticast.getThread().join();
} catch (InterruptedException ex) {
}
try {
node.setSuccessor(1, node.getSuccessor().getSuccessor());
node.getSuccessor().setSuccessor(1, node.getSuccessor().getSuccessor().getSuccessor());
node.setSuccessor(2, node.getSuccessor().getSuccessor(1));
} catch (RemoteException ex) {
basic.Logger.err(ex.getMessage());
}
try {
node.joinedStabilize();
node.fixFingers();
node.sendFiles2ResponsibleNode();
} catch (RemoteException ex) {
basic.Logger.err(ex.getMessage());
}
node.startCheck();
receivemulticast = new MulticastReceiver(1101, "224.1.1.1", node);
receivemulticast.start();
}
