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/* | |
* Coded by Alex Yanchenko <alex@yanchenko.com>. | |
*/ | |
import static org.droidparts.contract.Constants.BUFFER_SIZE; | |
import static org.droidparts.contract.Constants.UTF8; | |
import static org.droidparts.util.IOUtils.silentlyClose; | |
import static org.droidparts.util.Strings.isNotEmpty; | |
import java.io.BufferedReader; | |
import java.io.BufferedWriter; | |
import java.io.IOException; | |
import java.io.InputStreamReader; | |
import java.io.OutputStreamWriter; | |
import java.net.InetSocketAddress; | |
import java.net.Socket; | |
import java.util.concurrent.ConcurrentLinkedQueue; | |
import org.droidparts.concurrent.thread.BackgroundThread; | |
import org.droidparts.util.L; | |
class SocketWorkerThread extends BackgroundThread { | |
public static final String LINE_SEP = "\n"; | |
public interface Listener { | |
void didReadLine(String line); | |
void didCatchException(String lineIn, Exception e); | |
} | |
private static final int TIMEOUT = 3000; | |
private final Listener listener; | |
private final InetSocketAddress addr; | |
private final Socket socket; | |
private BufferedReader reader; | |
private BufferedWriter writer; | |
private final ConcurrentLinkedQueue<String> writeLineQueue = new ConcurrentLinkedQueue<String>(); | |
private final ReaderThread readerThread = new ReaderThread(); | |
private volatile String lastLine; | |
public SocketWorkerThread(String host, int port, Listener listener) { | |
super("ServerWorkerThread"); | |
this.listener = listener; | |
addr = new InetSocketAddress(host, port); | |
socket = new Socket(); | |
} | |
public void writeLine(String line) { | |
writeLineQueue.add(line); | |
} | |
@Override | |
public void run() { | |
while (!isInterrupted()) { | |
String line = writeLineQueue.poll(); | |
if (line != null) { | |
lastLine = line; | |
try { | |
if (!socket.isConnected()) { | |
connectSocket(); | |
readerThread.start(); | |
} | |
// | |
writer.write(line); | |
writer.write(LINE_SEP); | |
writer.flush(); | |
// | |
} catch (IOException e) { | |
lastLine = null; | |
listener.didCatchException(line, e); | |
break; | |
} | |
} | |
} | |
readerThread.interrupt(); | |
closeSocket(); | |
} | |
private void connectSocket() throws IOException { | |
socket.connect(addr, TIMEOUT); | |
// socket.setSoTimeout(TIMEOUT); | |
reader = new BufferedReader(new InputStreamReader( | |
socket.getInputStream(), UTF8), BUFFER_SIZE); | |
writer = new BufferedWriter(new OutputStreamWriter( | |
socket.getOutputStream(), UTF8), BUFFER_SIZE); | |
} | |
private void closeSocket() { | |
silentlyClose(reader, writer); | |
try { | |
socket.close(); | |
} catch (Exception e) { | |
L.d(e); | |
} | |
} | |
// | |
private class ReaderThread extends BackgroundThread { | |
ReaderThread() { | |
super("ServerWorkerThread-Reader"); | |
} | |
@Override | |
public void run() { | |
while (!isInterrupted()) { | |
try { | |
String line = reader.readLine(); | |
if (isNotEmpty(line) && !isInterrupted()) { | |
listener.didReadLine(line); | |
} | |
// } catch (SocketTimeoutException ex) { | |
// // it's ok | |
} catch (IOException e) { | |
if (lastLine != null) { | |
SocketWorkerThread.this.interrupt(); | |
listener.didCatchException(lastLine, e); | |
break; | |
} | |
} | |
} | |
} | |
} | |
} |
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