/** Generates an instance based on the specified file. */
public static RemoteControlPipeTable readHostFile(String filename) throws IOException {
RemoteControlPipeTable table = new RemoteControlPipeTable();
BufferedReader in = null;
try {
in = new BufferedReader(new InputStreamReader(new FileInputStream(filename), Main.ENCODING));
} catch (UnsupportedEncodingException e) {
// NOTREACHED
}
String line;
while (true) {
line = in.readLine();
if (line == null) break; // EOF
if (line.length() <= 0) continue; // skip brank lines
if (line.startsWith("#") || line.startsWith(";") || line.startsWith("//"))
continue; // comments
String[] splitted = line.split("\\s+");
HostAndPort hostPort = MessagingUtility.parseHostnameAndPort(splitted[0], Main.DIST_EMU_PORT);
int startHostID = Integer.parseInt(splitted[1]);
WorkerEntry entry = new WorkerEntry(hostPort, startHostID);
table.entrySet.add(entry);
table.entryMap.put(hostPort.getHostAddress(), entry);
}
return table;
}
/** Generates an instance based on the specified String. */
public static RemoteControlPipeTable parseString(String str) throws UnknownHostException {
RemoteControlPipeTable table = new RemoteControlPipeTable();
String[] splitted = str.split("\\s*,\\s*");
try {
int index = 0;
while (true) {
HostAndPort hostPort =
MessagingUtility.parseHostnameAndPort(splitted[index], Main.DIST_EMU_PORT);
int startHostID = Integer.parseInt(splitted[index + 1]);
WorkerEntry entry = new WorkerEntry(hostPort, startHostID);
table.entrySet.add(entry);
table.entryMap.put(hostPort.getHostAddress(), entry);
index += 2;
}
} catch (ArrayIndexOutOfBoundsException e) {
// ignore
}
return table;
}
public Mcast initialize(
short applicationID, short applicationVersion, String command, CommandLine cmd)
throws Exception {
String transport = null;
String algorithm = null;
String routingStyle = null;
ID selfID = null;
String statCollectorAddressAndPort = null;
String selfAddressAndPort = null;
boolean noUPnP = false;
boolean join = false;
String contactHost = null;
int contactPort = -1;
String contactString = null;
// parse command-line arguments
String optVal;
if (cmd.hasOption('h')) {
usage(command);
System.exit(1);
}
optVal = cmd.getOptionValue('i');
if (optVal != null) {
selfID = ID.getID(optVal, MAX_ID_SIZE);
}
optVal = cmd.getOptionValue('m');
if (optVal != null) {
statCollectorAddressAndPort = optVal;
}
optVal = cmd.getOptionValue('t');
if (optVal != null) {
transport = optVal;
}
optVal = cmd.getOptionValue('a');
if (optVal != null) {
algorithm = optVal;
}
optVal = cmd.getOptionValue('r');
if (optVal != null) {
routingStyle = optVal;
}
optVal = cmd.getOptionValue('s');
if (optVal != null) {
selfAddressAndPort = optVal;
}
if (cmd.hasOption('N')) {
noUPnP = true;
}
String[] args = cmd.getArgs();
// parse initial contact
if (args.length >= 1) {
contactHost = args[0];
join = true;
if (args.length >= 2) contactPort = Integer.parseInt(args[1]);
}
// initialize a Mcast
McastConfiguration config = McastFactory.getDefaultConfiguration();
if (transport != null) config.setMessagingTransport(transport);
if (algorithm != null) config.setRoutingAlgorithm(algorithm);
if (routingStyle != null) config.setRoutingStyle(routingStyle);
if (selfAddressAndPort != null) {
MessagingUtility.HostAndPort hostAndPort =
MessagingUtility.parseHostnameAndPort(selfAddressAndPort, config.getSelfPort());
config.setSelfAddress(hostAndPort.getHostName());
config.setSelfPort(hostAndPort.getPort());
}
if (noUPnP) config.setDoUPnPNATTraversal(false);
if (contactPort < 0) { // not initialized
contactPort = config.getSelfPort();
}
Mcast mcast =
McastFactory.getMcast(
applicationID, applicationVersion, config, selfID); // throws Exception
StringBuilder sb = new StringBuilder();
sb.append("Mcast configuration:\n");
sb.append(" hostname:port: ")
.append(mcast.getRoutingService().getSelfIDAddressPair().getAddress())
.append('\n');
sb.append(" transport type: ").append(config.getMessagingTransport()).append('\n');
sb.append(" routing algorithm: ").append(config.getRoutingAlgorithm()).append('\n');
sb.append(" routing style: ").append(config.getRoutingStyle()).append('\n');
// System.out.print(sb);
try {
if (statCollectorAddressAndPort != null) {
StatConfiguration statConfig = StatFactory.getDefaultConfiguration();
// provides the default port number of stat collector
MessagingUtility.HostAndPort hostAndPort =
MessagingUtility.parseHostnameAndPort(
statCollectorAddressAndPort, statConfig.getSelfPort());
mcast.setStatCollectorAddress(hostAndPort.getHostName(), hostAndPort.getPort());
}
if (join) {
if (contactPort >= 0) {
mcast.joinOverlay(contactHost, contactPort);
contactString = contactHost + " : " + contactPort;
} else {
try {
mcast.joinOverlay(contactHost);
contactString = contactHost;
} catch (IllegalArgumentException e) { // port is not specified
contactPort = config.getContactPort();
mcast.joinOverlay(contactHost, contactPort);
contactString = contactHost + ":" + contactPort;
}
}
}
} catch (UnknownHostException e) {
System.err.println("A hostname could not be resolved: " + contactHost);
e.printStackTrace();
System.exit(1);
}
if (join) {
// System.out.println(" initial contact: " + contactString);
}
// System.out.println("A Mcast started.");
// System.out.flush();
return mcast;
}