/** begins an http failover. */
private void checkForStaleUpdateAndMaybeDoHttpFailover() {
LOG.debug("checking for timeout http failover");
long monthAgo = clock.now() - ONE_MONTH;
if (UpdateSettings.LAST_UPDATE_TIMESTAMP.getValue() < monthAgo
&& // more than a month ago
UpdateSettings.LAST_HTTP_FAILOVER.getValue() < monthAgo
&& // and last failover too
!httpRequestControl.requestQueued(
HttpRequestControl.RequestReason.TIMEOUT)) { // and we're not already doing a failover
long when = (connectionServices.isConnected() ? 1 : 5) * 60 * 1000;
if (LOG.isDebugEnabled()) LOG.debug("scheduling http failover in " + when);
backgroundExecutor.schedule(
new Runnable() {
public void run() {
try {
launchHTTPUpdate(timeoutUpdateLocation);
} catch (URISyntaxException e) {
httpRequestControl.requestFinished();
httpRequestControl.cancelRequest();
LOG.warn(e.toString(), e);
}
}
},
when,
TimeUnit.MILLISECONDS);
}
}
public boolean requestFailed(HttpUriRequest request, HttpResponse response, IOException exc) {
LOG.warn("http failover failed", exc);
httpRequestControl.requestFinished();
UpdateSettings.LAST_HTTP_FAILOVER.setValue(clock.now());
httpExecutor.get().releaseResources(response);
// nothing we can do.
return false;
}
public boolean requestComplete(HttpUriRequest request, HttpResponse response) {
LOG.debug("http request method succeeded");
// remember we made an attempt even if it didn't succeed
UpdateSettings.LAST_HTTP_FAILOVER.setValue(clock.now());
final byte[] inflated;
try {
if (response.getStatusLine().getStatusCode() < 200
|| response.getStatusLine().getStatusCode() >= 300)
throw new IOException("bad code " + response.getStatusLine().getStatusCode());
byte[] resp = null;
if (response.getEntity() != null) {
resp = IOUtils.readFully(response.getEntity().getContent());
}
if (resp == null || resp.length == 0) throw new IOException("bad body");
// inflate the response and process.
inflated = updateMessageVerifier.inflateNetworkData(resp);
} catch (IOException failed) {
httpRequestControl.requestFinished();
LOG.warn("couldn't fetch data ", failed);
return false;
} finally {
httpExecutor.get().releaseResources(response);
}
// Handle the data in the background thread.
backgroundExecutor.execute(
new Runnable() {
public void run() {
httpRequestControl.requestFinished();
LOG.trace("Parsing new data...");
handleDataInternal(inflated, UpdateType.FROM_HTTP, null);
}
});
return false; // no more requests
}
private void doHttpMaxFailover(UpdateCollection updateCollection) {
long maxTimeAgo = clock.now() - silentPeriodForMaxHttpRequest;
if (!httpRequestControl.requestQueued(HttpRequestControl.RequestReason.MAX)
&& UpdateSettings.LAST_HTTP_FAILOVER.getValue() < maxTimeAgo) {
LOG.debug("Scheduling http max failover...");
backgroundExecutor.schedule(
new Runnable() {
public void run() {
String url = maxedUpdateList.get(RANDOM.nextInt(maxedUpdateList.size()));
try {
launchHTTPUpdate(url);
} catch (URISyntaxException e) {
httpRequestControl.requestFinished();
httpRequestControl.cancelRequest();
LOG.warn(e.toString(), e);
}
}
},
RANDOM.nextInt(maxMaxHttpRequestDelay) + minMaxHttpRequestDelay,
TimeUnit.MILLISECONDS);
} else {
LOG.debug("Ignoring http max failover.");
}
}
/**
* 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");
}
