/**
* This method provides convenient way to parse command line arguments and validate them.
*
* @param args Command line arguments array
* @throws IOException
*/
public void parseArgs(String[] args) throws IOException {
CmdLineParser parser = new CmdLineParser(this);
try {
// parse the arguments.
parser.parseArgument(args);
// Validate arguments
if (this.blockSize <= 32
|| (!this.direction.equals("push") && !this.direction.equals("pull"))) {
String errMsg = "";
if (this.blockSize <= 32) {
errMsg += "Block size should be larger than 32 bytes.\n";
}
if (!this.direction.equals("push") && !this.direction.equals("pull")) {
errMsg += "Direction must be \"push\" or \"pull\"";
}
throw new CmdLineException(parser, errMsg);
}
} catch (CmdLineException e) {
// print error message
System.err.println(e.getMessage() + "\n");
System.err.println("java -jar syncclient.jar [options...] arguments...");
// print the list of available options
parser.printUsage(System.err);
System.err.println();
// print option sample
System.err.println(" Example: java -jar syncclient.jar" + parser.printExample(ALL));
System.exit(-1);
}
}
/**
* This method initiates new thread for synchronisation and continiously check for synchronised
* file state if it is operating in "push" direction
*/
public void sync() {
// Synchronised file
SynchronisedFile clientFile = null;
try {
clientFile = new SynchronisedFile(this.clientFileName, this.blockSize);
} catch (IOException e) {
e.printStackTrace();
System.exit(-1);
}
/*
* Create new thread to communicate with server
*/
Thread stt =
new Thread(
new SyncThreadClient(clientFile, this.host, this.port, this.blockSize, this.direction));
stt.start();
/*
* Continue to check client file state for every 5 seconds if the input
* direction is "push"
*/
if (this.direction.equals("push")) {
while (true) {
try {
clientFile.CheckFileState();
} catch (IOException e) {
e.printStackTrace();
System.exit(-1);
} catch (InterruptedException e) {
e.printStackTrace();
System.exit(-1);
}
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
System.exit(-1);
}
}
}
}