/**
* Stores the given data to disk & posts an update to neighboring connections. Starts the download
* of any updates
*/
private void storeAndUpdate(byte[] data, UpdateCollection uc, UpdateType updateType) {
if (LOG.isTraceEnabled())
LOG.trace("Retrieved new data from: " + updateType + ", storing & updating.");
if (uc.getId() == IGNORE_ID && updateType == UpdateType.FROM_NETWORK)
throw new IllegalStateException("shouldn't be here!");
// If an http max request is pending, don't even bother with this stuff.
// We want to get it straight from the source...
if (updateType == UpdateType.FROM_NETWORK
&& httpRequestControl.isRequestPending()
&& httpRequestControl.getRequestReason() == HttpRequestControl.RequestReason.MAX) return;
_lastId = uc.getId();
_lastTimestamp = uc.getTimestamp();
UpdateSettings.LAST_UPDATE_TIMESTAMP.setValue(_lastTimestamp);
long delay = UpdateSettings.UPDATE_DOWNLOAD_DELAY.getValue();
long random = Math.abs(RANDOM.nextLong() % delay);
_nextDownloadTime = _lastTimestamp + random;
_lastBytes = data;
if (updateType != UpdateType.FROM_DISK) {
// cancel any http and pretend we just updated.
if (httpRequestControl.getRequestReason() == HttpRequestControl.RequestReason.TIMEOUT)
httpRequestControl.cancelRequest();
UpdateSettings.LAST_HTTP_FAILOVER.setValue(clock.now());
FileUtils.verySafeSave(CommonUtils.getUserSettingsDir(), FILENAME, data);
capabilitiesVMFactory.updateCapabilities();
connectionManager.get().sendUpdatedCapabilities();
}
Version limeV;
try {
limeV = new Version(LimeWireUtils.getLimeWireVersion());
} catch (VersionFormatException vfe) {
LOG.warn("Invalid LimeWire version", vfe);
return;
}
Version javaV = null;
try {
javaV = new Version(VersionUtils.getJavaVersion());
} catch (VersionFormatException vfe) {
LOG.warn("Invalid java version", vfe);
}
// don't allow someone to set the style to be above major.
int style = Math.min(UpdateStyle.STYLE_MAJOR, UpdateSettings.UPDATE_STYLE.getValue());
UpdateData updateInfo =
uc.getUpdateDataFor(
limeV, ApplicationSettings.getLanguage(), LimeWireUtils.isPro(), style, javaV);
List<DownloadInformation> updatesToDownload = uc.getUpdatesWithDownloadInformation();
_killingObsoleteNecessary = true;
// if we have an update for our machine, prepare the command line
// and move our update to the front of the list of updates
if (updateInfo != null && updateInfo.getUpdateURN() != null) {
prepareUpdateCommand(updateInfo);
updatesToDownload = new LinkedList<DownloadInformation>(updatesToDownload);
updatesToDownload.add(0, updateInfo);
}
_updateInfo = updateInfo;
_updatesToDownload = updatesToDownload;
downloadUpdates(updatesToDownload, null);
if (updateInfo == null) {
LOG.warn("No relevant update info to notify about.");
return;
} else if (updateInfo.getUpdateURN() == null || isHopeless(updateInfo)) {
if (LOG.isDebugEnabled())
LOG.debug(
"we have an update, but it doesn't need a download. "
+ "or all our updates are hopeles. Scheduling URL notification...");
updateInfo.setUpdateCommand(null);
backgroundExecutor.schedule(
new NotificationFailover(_lastId),
delay(clock.now(), uc.getTimestamp()),
TimeUnit.MILLISECONDS);
} else if (isMyUpdateDownloaded(updateInfo)) {
LOG.debug("there is an update for me, but I happen to have it on disk");
fireUpdate(updateInfo);
} else LOG.debug("we have an update, it needs a download. Rely on callbacks");
}
/**
* Handles processing a newly arrived message.
*
* <p>(Processes the data immediately.)
*/
private void handleDataInternal(byte[] data, UpdateType updateType, ReplyHandler handler) {
if (data == null) {
if (updateType == UpdateType.FROM_NETWORK && handler != null)
networkUpdateSanityChecker.get().handleInvalidResponse(handler, RequestType.VERSION);
LOG.warn("No data to handle.");
return;
}
String xml = updateMessageVerifier.getVerifiedData(data);
if (xml == null) {
if (updateType == UpdateType.FROM_NETWORK && handler != null)
networkUpdateSanityChecker.get().handleInvalidResponse(handler, RequestType.VERSION);
LOG.warn("Couldn't verify signature on data.");
return;
}
if (updateType == UpdateType.FROM_NETWORK && handler != null)
networkUpdateSanityChecker.get().handleValidResponse(handler, RequestType.VERSION);
UpdateCollection uc = updateCollectionFactory.createUpdateCollection(xml);
updateCollection = uc;
if (LOG.isDebugEnabled())
LOG.debug(
"Got a collection with id: "
+ uc.getId()
+ ", from "
+ updateType
+ ". Current id is: "
+ _lastId);
switch (updateType) {
case FROM_NETWORK:
// the common case:
// a) if max && no max already, do failover.
// b) if not max && <= last, check stale.
// c) if not max && > last, update
if (uc.getId() == IGNORE_ID) {
if (_lastId != IGNORE_ID) doHttpMaxFailover(uc);
} else if (uc.getId() <= _lastId) {
checkForStaleUpdateAndMaybeDoHttpFailover();
addSourceIfIdMatches(handler, uc.getId());
} else { // is greater
storeAndUpdate(data, uc, updateType);
}
break;
case FROM_DISK:
// on first load:
// a) always check for stale
// b) update if we didn't get an update before this ran.
checkForStaleUpdateAndMaybeDoHttpFailover();
if (uc.getId() > _lastId) storeAndUpdate(data, uc, updateType);
break;
case FROM_HTTP:
// on HTTP response:
// a) update if >= stored.
// (note this is >=, different than >, which is from
// network)
if (uc.getId() >= _lastId) storeAndUpdate(data, uc, updateType);
break;
}
}
