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package com.ericsson.ssa.container;
import com.ericsson.ssa.container.reporter.Reporter;
import com.ericsson.ssa.container.startup.SipMonitoring;
import com.ericsson.ssa.sip.Dispatcher;
import com.ericsson.ssa.sip.SipServletRequestImpl;
import com.ericsson.ssa.sip.SipServletResponseImpl;
import com.ericsson.ssa.utils.ByteBufferPool;
import com.sun.grizzly.SelectorHandler;
import com.sun.grizzly.TCPSelectorHandler;
import com.sun.grizzly.async.AsyncWriteCallbackHandler;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.SelectionKey;
/**
* Common response dispatcher for TCP and TLS.
* @author Adrian Szwej
*
*/
public abstract class ResponseDispatcher implements Dispatcher {
private final SelectorHandler streamHandler;
private final SelectionKey key;
private ByteBufferPool _bbPool;
private AsyncWriteCallbackHandler _asyncWriteCallbackHandler;
public ResponseDispatcher(SelectorHandler handler, SelectionKey key, ByteBufferPool bbPool, AsyncWriteCallbackHandler asyncWriteCallbackHandler) {
streamHandler = handler;
this.key = key;
_bbPool = bbPool;
_asyncWriteCallbackHandler = asyncWriteCallbackHandler;
}
public void dispatch(SipServletRequestImpl req) {
throw new IllegalStateException("Not designed for connection reuse!");
}
public void dispatch(SipServletResponseImpl resp) {
ByteBuffer bb = null;
try {
// TODO add a Hash table that makes keeps track if someone is
// writing and in that case queue.
resp.toBufferInit();
bb = _bbPool.acquireBuffer();
resp.toBuffer(bb);
bb.flip();
if (resp.toBufferHasRemaining()) {
/**
*
* Synchronize only if the message is more than one bytebuffer.
*
*/
synchronized (key.channel()) {
write(bb, resp);
while (resp.toBufferHasRemaining()) {
bb = _bbPool.acquireBuffer();
resp.toBuffer(bb);
bb.flip();
write(bb, resp);
}
}
} else {
write(bb, resp);
}
// trigger reporter for network manager
Reporter reporter = GrizzlyNetworkManager.getInstance().getReporter();
if (reporter != null) {
reporter.logOutgoingResponse(Reporter.InterceptionType.LAYER, resp, GrizzlyNetworkManager.class.getSimpleName());
}
// SipResponse
if (SipMonitoring.isEnabled(SipMonitoring.NETWORK_MANAGER)) {
if (((TCPSelectorHandler)streamHandler).getInet() != null) {
GrizzlyNetworkManager.getInstance().incrEasSentSipResponses(
((TCPSelectorHandler)streamHandler).getInet().getHostAddress(),
((TCPSelectorHandler)streamHandler).getPort());
} else {
GrizzlyNetworkManager.getInstance().incrEasSentSipResponses(
resp.getLocal().getAddress().getHostAddress(), -1);
}
GrizzlyNetworkManager.getInstance().incrRespOutStatCodeCounter(resp.getStatus());
}
} catch (Exception e) {
handleIOException(bb, resp);
}
}
protected abstract void write(ByteBuffer bb, SipServletResponseImpl resp)
throws IOException;
public SelectorHandler getStreamHandler() {
return streamHandler;
}
public SelectionKey getKey() {
return key;
}
protected AsyncWriteCallbackHandler getWriteCallbackHandler() {
return _asyncWriteCallbackHandler;
}
protected void handleIOException(ByteBuffer bb, SipServletResponseImpl resp) {
_bbPool.releaseBuffer(bb);
Dispatcher d = resp.popDispatcher();
if (d != null) {
d.dispatch(resp);
}
}
}