/// <summary>
/// Check for updates synchronouly
/// </summary>
/// <param name="source">Updates source to use</param>
/// <param name="callback">Callback function to call when done</param>
/// <returns>true if successful and updates exist</returns>
private bool CheckForUpdates(IUpdateSource source, Action <int> callback)
{
LatestError = null;
if (UpdateFeedReader == null)
{
throw new ArgumentException("An update feed reader is required; please set one before checking for updates");
}
if (source == null)
{
throw new ArgumentException("An update source was not specified");
}
lock (UpdatesToApply)
{
UpdatesToApply.Clear();
var tasks = UpdateFeedReader.Read(source.GetUpdatesFeed());
foreach (var t in tasks)
{
if (ShouldStop)
{
return(false);
}
if (t.UpdateConditions.IsMet(t)) // Only execute if all conditions are met
{
UpdatesToApply.Add(t);
}
}
}
if (ShouldStop)
{
return(false);
}
State = UpdateProcessState.Checked;
if (callback != null)
{
callback.BeginInvoke(UpdatesToApply.Count, null, null);
}
if (UpdatesToApply.Count > 0)
{
return(true);
}
return(false);
}
/// <summary>
/// Check for updates synchronouly
/// </summary>
/// <param name="source">Updates source to use</param>
public void CheckForUpdates(IUpdateSource source)
{
if (IsWorking)
{
throw new InvalidOperationException("Another update process is already in progress");
}
using (WorkScope.New(isWorking => IsWorking = isWorking))
{
if (UpdateFeedReader == null)
{
throw new ArgumentException("An update feed reader is required; please set one before checking for updates");
}
if (source == null)
{
throw new ArgumentException("An update source was not specified");
}
if (State != UpdateProcessState.NotChecked)
{
throw new InvalidOperationException("Already checked for updates; to reset the current state call CleanUp()");
}
lock (UpdatesToApply)
{
UpdatesToApply.Clear();
using (Stream s = source.GetUpdatesFeed())
{
var tasks = UpdateFeedReader.Read(s);
foreach (var t in tasks)
{
if (ShouldStop)
{
throw new UserAbortException();
}
if (t.UpdateConditions == null || t.UpdateConditions.IsMet(t)) // Only execute if all conditions are met
{
UpdatesToApply.Add(t);
}
}
}
}
State = UpdateProcessState.Checked;
}
}
/// <summary>
/// Check for updates synchronously
/// </summary>
public void CheckForUpdates()
{
if (IsWorking)
{
throw new InvalidOperationException("Another update process is already in progress");
}
else if (UpdateFeedReader == null)
{
throw new InvalidOperationException("UpdateFeedReader must be set before calling CheckForUpdates()");
}
else if (UpdateSource == null)
{
throw new InvalidOperationException("UpdateSource must be set before calling CheckForUpdates()");
}
using (WorkScope.New(isWorking => IsWorking = isWorking))
{
if (State != UpdateProcessState.NotChecked)
{
throw new InvalidOperationException("Already checked for updates; to reset the current state call CleanUp()");
}
lock (UpdatesToApply)
{
UpdatesToApply.Clear();
var tasks = UpdateFeedReader.Read(UpdateSource.GetUpdatesFeed());
foreach (var t in tasks)
{
if (ShouldStop)
{
throw new UserAbortException();
}
if (t.UpdateConditions == null || t.UpdateConditions.IsMet(t)) // Only execute if all conditions are met
{
UpdatesToApply.Add(t);
}
}
}
State = UpdateProcessState.Checked;
}
}
/// <summary>
/// Check for updates synchronously
/// </summary>
public void CheckForUpdates()
{
if (IsWorking)
{
throw new InvalidOperationException("Another update process is already in progress");
}
else if (UpdateFeedReader == null)
{
throw new InvalidOperationException("UpdateFeedReader must be set before calling CheckForUpdates()");
}
else if (UpdateSource == null)
{
throw new InvalidOperationException("UpdateSource must be set before calling CheckForUpdates()");
}
using (WorkScope.New(isWorking => IsWorking = isWorking))
{
if (State != UpdateProcessState.NotChecked)
{
throw new InvalidOperationException("Already checked for updates; to reset the current state call CleanUp()");
}
lock (UpdatesToApply)
{
UpdatesToApply.Clear();
IList <IUpdateTask> tasks = null;
int currentRetry = 0;
while (currentRetry < MaximumRetries)
{
++currentRetry;
try
{
tasks = UpdateFeedReader.Read(UpdateSource.GetUpdatesFeed());
break;
}
catch (Exception ex)
{
Logger.Log(ex);
if (ex is WebException)
{
var e = ex as WebException;
if (e.Status == WebExceptionStatus.Timeout ||
e.Status == WebExceptionStatus.ConnectFailure ||
e.Status == WebExceptionStatus.NameResolutionFailure)
{
throw new UpdateProcessFailedException("Failed to retrieve feed: " + ex.ToString());
}
}
if (currentRetry == MaximumRetries)
{
throw new UpdateProcessFailedException("Failed to retrieve feed: " + ex.ToString());
}
Thread.Sleep(RetriesTimeout);
}
}
foreach (var t in tasks)
{
if (ShouldStop)
{
throw new UserAbortException();
}
if (t.UpdateConditions == null || t.UpdateConditions.IsMet(t)) // Only execute if all conditions are met
{
UpdatesToApply.Add(t);
}
}
}
State = UpdateProcessState.Checked;
}
}
