/**
* is invoked in an implementation-specific fashion to determine if an instance is still valid
* to be returned by the pool. It will only be invoked on an "activated" instance.
*
* @param an instance of {@link Session} maintained by this pool.
* @return <code>true</code> if the connection is still alive and operative (checked by asking
* its user name), <code>false</code> otherwise.
*/
@Override
public boolean validateObject(Object obj) {
ISession session = (ISession) obj;
boolean valid = !session.isClosed();
// MAKE PROPER VALIDITY CHECK HERE as for GEOT-1273
if (valid) {
try {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest(" Validating SDE Connection " + session);
}
/*
* Validate the connection's health with testServer instead of getUser. The
* former is lighter weight, getUser() forced a server round trip and under
* heavy concurrency ate about 30% the time
*/
session.testServer();
} catch (IOException e) {
LOGGER.info(
"Can't validate SeConnection, discarding it: "
+ session
+ ". Reason: "
+ e.getMessage());
valid = false;
}
}
return valid;
}
@Override
public void run() {
/*
* Do not retransmit a message if it has been acknowledged,
* rejected, canceled or already been retransmitted for the maximum
* number of times.
*/
try {
int failedCount = exchange.getFailedTransmissionCount() + 1;
exchange.setFailedTransmissionCount(failedCount);
if (message.isAcknowledged()) {
LOGGER.finest(
"Timeout: message already acknowledged, cancel retransmission of " + message);
return;
} else if (message.isRejected()) {
LOGGER.finest("Timeout: message already rejected, cancel retransmission of " + message);
return;
} else if (message.isCanceled()) {
LOGGER.finest("Timeout: canceled (MID=" + message.getMID() + "), do not retransmit");
return;
} else if (failedCount <= max_retransmit) {
LOGGER.finer(
"Timeout: retransmit message, failed: " + failedCount + ", message: " + message);
// Trigger MessageObservers
message.retransmitting();
// MessageObserver might have canceled
if (!message.isCanceled()) retransmit();
} else {
LOGGER.info(
"Timeout: retransmission limit reached, exchange failed, message: " + message);
exchange.setTimedOut();
message.setTimedOut(true);
}
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public boolean hasNext() {
boolean exists = !isNextSourceFeatureNull();
if (!isHasNextCalled()) {
if (featureCounter < maxFeatures) {
if (!exists && getSourceFeatureIterator() != null && getSourceFeatureIterator().hasNext()) {
this.curSrcFeature = getSourceFeatureIterator().next();
exists = true;
}
if (exists && filteredFeatures != null) {
// get the next one if this row has already been added to the target
// feature from setNextFilteredFeature
while (exists && filteredFeatures.contains(extractIdForFeature(this.curSrcFeature))) {
if (getSourceFeatureIterator() != null && getSourceFeatureIterator().hasNext()) {
this.curSrcFeature = getSourceFeatureIterator().next();
exists = true;
} else {
exists = false;
}
}
}
// HACK HACK HACK
// evaluate filter that applies to this list as we want a subset
// instead of full result
// this is a temporary solution for Bureau of Meteorology
// requirement for timePositionList
if (listFilter != null) {
while (exists && !listFilter.evaluate(curSrcFeature)) {
// only add to subset if filter matches value
if (getSourceFeatureIterator() != null && getSourceFeatureIterator().hasNext()) {
this.curSrcFeature = getSourceFeatureIterator().next();
exists = true;
} else {
exists = false;
}
}
}
// END OF HACK
} else {
exists = false;
}
}
if (!exists) {
LOGGER.finest("no more features, produced " + featureCounter);
close();
curSrcFeature = null;
}
setHasNextCalled(true);
return exists;
}
@Override
public void passivateObject(Object obj) {
LOGGER.finest(" passivating connection " + obj);
final Session conn = (Session) obj;
conn.markInactive();
}
/*
* The endpoint's executor executes this method to convert the raw bytes
* into a message, look for an associated exchange and forward it to
* the stack of layers.
*/
private void receiveMessage(RawData raw) {
DataParser parser = new DataParser(raw.getBytes());
if (parser.isRequest()) {
// This is a request
Request request;
try {
request = parser.parseRequest();
} catch (IllegalStateException e) {
StringBuffer log =
new StringBuffer("message format error caused by ")
.append(raw.getInetSocketAddress());
if (!parser.isReply()) {
// manually build RST from raw information
EmptyMessage rst = new EmptyMessage(Type.RST);
rst.setDestination(raw.getAddress());
rst.setDestinationPort(raw.getPort());
rst.setMID(parser.getMID());
for (MessageInterceptor interceptor : interceptors) interceptor.sendEmptyMessage(rst);
connector.send(serializer.serialize(rst));
log.append(" and reset");
}
if (LOGGER.isLoggable(Level.INFO)) {
LOGGER.info(log.toString());
}
return;
}
request.setSource(raw.getAddress());
request.setSourcePort(raw.getPort());
request.setSenderIdentity(raw.getSenderIdentity());
/*
* Logging here causes significant performance loss.
* If necessary, add an interceptor that logs the messages,
* e.g., the MessageTracer.
*/
for (MessageInterceptor interceptor : interceptors) interceptor.receiveRequest(request);
// MessageInterceptor might have canceled
if (!request.isCanceled()) {
Exchange exchange = matcher.receiveRequest(request);
if (exchange != null) {
exchange.setEndpoint(CoAPEndpoint.this);
coapstack.receiveRequest(exchange, request);
}
}
} else if (parser.isResponse()) {
// This is a response
Response response = parser.parseResponse();
response.setSource(raw.getAddress());
response.setSourcePort(raw.getPort());
/*
* Logging here causes significant performance loss.
* If necessary, add an interceptor that logs the messages,
* e.g., the MessageTracer.
*/
for (MessageInterceptor interceptor : interceptors) interceptor.receiveResponse(response);
// MessageInterceptor might have canceled
if (!response.isCanceled()) {
Exchange exchange = matcher.receiveResponse(response);
if (exchange != null) {
exchange.setEndpoint(CoAPEndpoint.this);
response.setRTT(System.currentTimeMillis() - exchange.getTimestamp());
coapstack.receiveResponse(exchange, response);
} else if (response.getType() != Type.ACK) {
LOGGER.fine("Rejecting unmatchable response from " + raw.getInetSocketAddress());
reject(response);
}
}
} else if (parser.isEmpty()) {
// This is an empty message
EmptyMessage message = parser.parseEmptyMessage();
message.setSource(raw.getAddress());
message.setSourcePort(raw.getPort());
/*
* Logging here causes significant performance loss.
* If necessary, add an interceptor that logs the messages,
* e.g., the MessageTracer.
*/
for (MessageInterceptor interceptor : interceptors)
interceptor.receiveEmptyMessage(message);
// MessageInterceptor might have canceled
if (!message.isCanceled()) {
// CoAP Ping
if (message.getType() == Type.CON || message.getType() == Type.NON) {
LOGGER.info("Responding to ping by " + raw.getInetSocketAddress());
reject(message);
} else {
Exchange exchange = matcher.receiveEmptyMessage(message);
if (exchange != null) {
exchange.setEndpoint(CoAPEndpoint.this);
coapstack.receiveEmptyMessage(exchange, message);
}
}
}
} else {
LOGGER.finest("Silently ignoring non-CoAP message from " + raw.getInetSocketAddress());
}
}
public void decode(BitStream in) throws AACException {
final int start = in.getPosition(); // should be 0
int type;
Element prev = null;
boolean content = true;
if (!config.getProfile().isErrorResilientProfile()) {
while (content && (type = in.readBits(3)) != ELEMENT_END) {
switch (type) {
case ELEMENT_SCE:
case ELEMENT_LFE:
LOGGER.finest("SCE");
prev = decodeSCE_LFE(in);
break;
case ELEMENT_CPE:
LOGGER.finest("CPE");
prev = decodeCPE(in);
break;
case ELEMENT_CCE:
LOGGER.finest("CCE");
decodeCCE(in);
prev = null;
break;
case ELEMENT_DSE:
LOGGER.finest("DSE");
decodeDSE(in);
prev = null;
break;
case ELEMENT_PCE:
LOGGER.finest("PCE");
decodePCE(in);
prev = null;
break;
case ELEMENT_FIL:
LOGGER.finest("FIL");
decodeFIL(in, prev);
prev = null;
break;
}
}
LOGGER.finest("END");
content = false;
prev = null;
} else {
// error resilient raw data block
switch (config.getChannelConfiguration()) {
case CHANNEL_CONFIG_MONO:
decodeSCE_LFE(in);
break;
case CHANNEL_CONFIG_STEREO:
decodeCPE(in);
break;
case CHANNEL_CONFIG_STEREO_PLUS_CENTER:
decodeSCE_LFE(in);
decodeCPE(in);
break;
case CHANNEL_CONFIG_STEREO_PLUS_CENTER_PLUS_REAR_MONO:
decodeSCE_LFE(in);
decodeCPE(in);
decodeSCE_LFE(in);
break;
case CHANNEL_CONFIG_FIVE:
decodeSCE_LFE(in);
decodeCPE(in);
decodeCPE(in);
break;
case CHANNEL_CONFIG_FIVE_PLUS_ONE:
decodeSCE_LFE(in);
decodeCPE(in);
decodeCPE(in);
decodeSCE_LFE(in);
break;
case CHANNEL_CONFIG_SEVEN_PLUS_ONE:
decodeSCE_LFE(in);
decodeCPE(in);
decodeCPE(in);
decodeCPE(in);
decodeSCE_LFE(in);
break;
default:
throw new AACException(
"unsupported channel configuration for error resilience: "
+ config.getChannelConfiguration());
}
}
in.byteAlign();
bitsRead = in.getPosition() - start;
}
