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Code Issues Releases Wiki Activity

Exception handling for some folder events, which are sometimes invoked with deleted folders.

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This commit is contained in:
Patrick Simpson 2017-01-18 10:35:17 +01:00
parent 7a4a534901
commit 1e690a63e6
1 changed files with 38 additions and 33 deletions
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71
src/AcaciaZPushPlugin/AcaciaZPushPlugin/ZPush/ZPushFolder.cs
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@ -169,46 +169,54 @@ namespace Acacia.ZPush
private void SubFolders_FolderAdd(MAPIFolder folder) private void SubFolders_FolderAdd(MAPIFolder folder)
{ {
Logger.Instance.Debug(this, "Folder added in {0}: {1}", this._item.Name, folder.Name); try
WatchChild((Folder)folder); {
Logger.Instance.Debug(this, "Folder added in {0}: {1}", this._item.Name, folder.Name);
WatchChild((Folder)folder);
}
catch (System.Exception e) { Logger.Instance.Error(this, "Exception in SubFolders_FolderAdd: {0}: {1}", Name, e); }
} }
private void SubFolders_FolderRemove() private void SubFolders_FolderRemove()
{ {
Logger.Instance.Debug(this, "Folder removed from {0}", this._item.Name); try
// Helpfully, Outlook doesn't tell us which folder was removed. Could use the BeforeFolderMove event instead,
// but that doesn't fire if a folder was removed on the server.
// Hence, fetch all the remaining folder ids, and remove any folder that no longer exists.
HashSet<string> remaining = new HashSet<string>();
foreach (Folder child in _subFolders)
{ {
try Logger.Instance.Debug(this, "Folder removed from {0}", this._item.Name);
// Helpfully, Outlook doesn't tell us which folder was removed. Could use the BeforeFolderMove event instead,
// but that doesn't fire if a folder was removed on the server.
// Hence, fetch all the remaining folder ids, and remove any folder that no longer exists.
HashSet<string> remaining = new HashSet<string>();
foreach (Folder child in _subFolders)
{ {
remaining.Add(child.EntryID); try
{
remaining.Add(child.EntryID);
}
catch (System.Exception e) { Logger.Instance.Warning(this, "Ignoring failed child: {0}", e); }
} }
catch (System.Exception e) { Logger.Instance.Warning(this, "Ignoring failed child: {0}", e); }
}
// Find the folders that need to be removed. There should be only one, but with Outlook we can never be sure, // Find the folders that need to be removed. There should be only one, but with Outlook we can never be sure,
// so compare all. We cannot modify the dictionary during iteration, so store entries to be removed in a // so compare all. We cannot modify the dictionary during iteration, so store entries to be removed in a
// temporary list // temporary list
List<KeyValuePair<string, ZPushFolder>> remove = new List<KeyValuePair<string, ZPushFolder>>(); List<KeyValuePair<string, ZPushFolder>> remove = new List<KeyValuePair<string, ZPushFolder>>();
foreach (var entry in _children) foreach (var entry in _children)
{
if (!remaining.Contains(entry.Key))
{ {
remove.Add(entry); if (!remaining.Contains(entry.Key))
{
remove.Add(entry);
}
}
// Actually remove the folders
foreach (var entry in remove)
{
Logger.Instance.Debug(this, "Removing subfolder {0}, {1}", this._item.Name, entry.Key);
_children.Remove(entry.Key);
entry.Value.Cleanup();
} }
} }
catch (System.Exception e) { Logger.Instance.Error(this, "Exception in SubFolders_FolderRemove: {0}: {1}", Name, e); }
// Actually remove the folders
foreach (var entry in remove)
{
Logger.Instance.Debug(this, "Removing subfolder {0}, {1}", this._item.Name, entry.Key);
_children.Remove(entry.Key);
entry.Value.Cleanup();
}
} }
private void SubFolders_FolderChange(MAPIFolder folder) private void SubFolders_FolderChange(MAPIFolder folder)
@ -231,10 +239,7 @@ namespace Acacia.ZPush
WatchChild((Folder)folder); WatchChild((Folder)folder);
} }
} }
catch(System.Exception e) catch (System.Exception e) { Logger.Instance.Error(this, "Exception in SubFolders_FolderChange: {0}: {1}", Name, e); }
{
Logger.Instance.Trace(this, "FolderChange exception: {0}: {1}", Name, e);
}
} }
private void Items_ItemAdd(object oItem) private void Items_ItemAdd(object oItem)