IObservable <UpdateInfo> checkForUpdate(bool ignoreDeltaUpdates = false, IObserver <int> progress = null)
{
var localReleases = Enumerable.Empty <ReleaseEntry>();
progress = progress ?? new Subject <int>();
try {
var file = fileSystem.GetFileInfo(LocalReleaseFile).OpenRead();
// NB: sr disposes file
using (var sr = new StreamReader(file, Encoding.UTF8)) {
localReleases = ReleaseEntry.ParseReleaseFile(sr.ReadToEnd());
}
} catch (Exception ex) {
// Something has gone wrong, we'll start from scratch.
log.WarnException("Failed to load local release list", ex);
initializeClientAppDirectory();
}
IObservable <string> releaseFile;
// Fetch the remote RELEASES file, whether it's a local dir or an
// HTTP URL
try {
if (isHttpUrl(updateUrlOrPath))
{
log.Info("Downloading RELEASES file from {0}", updateUrlOrPath);
releaseFile = urlDownloader.DownloadUrl(String.Format("{0}/{1}", updateUrlOrPath, "RELEASES"), progress)
.Catch <string, TimeoutException>(ex => {
log.Info("Download timed out (returning blank release list)");
return(Observable.Return(String.Empty));
})
.Catch <string, WebException>(ex => {
log.InfoException("Download resulted in WebException (returning blank release list)", ex);
return(Observable.Return(String.Empty));
});
}
else
{
log.Info("Reading RELEASES file from {0}", updateUrlOrPath);
if (!fileSystem.GetDirectoryInfo(updateUrlOrPath).Exists)
{
var message =
String.Format(
"The directory {0} does not exist, something is probably broken with your application", updateUrlOrPath);
var ex = new SquirrelConfigurationException(message);
return(Observable.Throw <UpdateInfo>(ex));
}
var fi = fileSystem.GetFileInfo(Path.Combine(updateUrlOrPath, "RELEASES"));
if (!fi.Exists)
{
var message = String.Format(
"The file {0} does not exist, something is probably broken with your application", fi.FullName);
log.Warn(message);
var packages = fileSystem.GetDirectoryInfo(updateUrlOrPath).GetFiles("*.nupkg");
if (packages.Length == 0)
{
var ex = new SquirrelConfigurationException(message);
return(Observable.Throw <UpdateInfo>(ex));
}
// NB: Create a new RELEASES file since we've got a directory of packages
ReleaseEntry.WriteReleaseFile(
packages.Select(x => ReleaseEntry.GenerateFromFile(x.FullName)), fi.FullName);
}
using (var sr = new StreamReader(fi.OpenRead(), Encoding.UTF8)) {
var text = sr.ReadToEnd();
releaseFile = Observable.Return(text);
}
progress.OnNext(100);
progress.OnCompleted();
}
} catch (Exception ex) {
progress.OnCompleted();
return(Observable.Throw <UpdateInfo>(ex));
}
// Return null if no updates found
var ret = releaseFile
.Select(ReleaseEntry.ParseReleaseFile)
.SelectMany(releases =>
releases.Any() ? determineUpdateInfo(localReleases, releases, ignoreDeltaUpdates)
: Observable.Return <UpdateInfo>(null))
.PublishLast();
ret.Connect();
return(ret);
}
IObservable<UpdateInfo> checkForUpdate(bool ignoreDeltaUpdates = false, IObserver<int> progress = null)
{
var localReleases = Enumerable.Empty<ReleaseEntry>();
progress = progress ?? new Subject<int>();
try {
var file = fileSystem.GetFileInfo(LocalReleaseFile).OpenRead();
// NB: sr disposes file
using (var sr = new StreamReader(file, Encoding.UTF8)) {
localReleases = ReleaseEntry.ParseReleaseFile(sr.ReadToEnd());
}
} catch (Exception ex) {
// Something has gone wrong, we'll start from scratch.
log.WarnException("Failed to load local release list", ex);
initializeClientAppDirectory();
}
IObservable<string> releaseFile;
// Fetch the remote RELEASES file, whether it's a local dir or an
// HTTP URL
try {
if (isHttpUrl(updateUrlOrPath)) {
log.Info("Downloading RELEASES file from {0}", updateUrlOrPath);
releaseFile = urlDownloader.DownloadUrl(String.Format("{0}/{1}", updateUrlOrPath, "RELEASES"), progress);
} else {
log.Info("Reading RELEASES file from {0}", updateUrlOrPath);
if (!fileSystem.GetDirectoryInfo(updateUrlOrPath).Exists) {
var message =
String.Format(
"The directory {0} does not exist, something is probably broken with your application", updateUrlOrPath);
var ex = new SquirrelConfigurationException(message);
return Observable.Throw<UpdateInfo>(ex);
}
var fi = fileSystem.GetFileInfo(Path.Combine(updateUrlOrPath, "RELEASES"));
if (!fi.Exists) {
var message = String.Format(
"The file {0} does not exist, something is probably broken with your application", fi.FullName);
log.Warn(message);
var packages = fileSystem.GetDirectoryInfo(updateUrlOrPath).GetFiles("*.nupkg");
if (packages.Length == 0) {
var ex = new SquirrelConfigurationException(message);
return Observable.Throw<UpdateInfo>(ex);
}
// NB: Create a new RELEASES file since we've got a directory of packages
ReleaseEntry.WriteReleaseFile(
packages.Select(x => ReleaseEntry.GenerateFromFile(x.FullName)), fi.FullName);
}
using (var sr = new StreamReader(fi.OpenRead(), Encoding.UTF8)) {
var text = sr.ReadToEnd();
releaseFile = Observable.Return(text);
}
progress.OnNext(100);
progress.OnCompleted();
}
} catch (Exception ex) {
progress.OnCompleted();
return Observable.Throw<UpdateInfo>(ex);
}
var ret = releaseFile
.Select(ReleaseEntry.ParseReleaseFile)
.SelectMany(releases => determineUpdateInfo(localReleases, releases, ignoreDeltaUpdates))
.PublishLast();
ret.Connect();
return ret;
}
