/** 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;
}
protected InetAddress getWorkerHostAddress(int hostID) {
InetAddress ret = null;
HostAndPort hostPort = this.getWorkerHostAndPort(hostID);
if (hostPort != null) {
try {
ret = hostPort.getHostAddress();
} catch (UnknownHostException e) {
System.err.println("Could not resolve a hostname: " + hostPort.getHostName());
}
} else {
ret = null;
}
return ret;
}
/** 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;
}