Hello,
I have a CustomAction that checks a license key against a cloud
database. This uses an async method to wait for the response before
continuing.
When I test the methods below outside of the CustomAction, it works
fine; sends request, task waits for completion, returns results.
When I use the same methods in the CustomAction, I can see (using
debug) that as soon as the t.Wait() line is hit the Dialog instantly
goes to the "ended prematurely" page.
Is there something I am missing or are tasks - specifically waiting for
async tasks - not possible in CustomActions?
Thank you,
-Brock
=====
[CustomAction]
public static ActionResult LicenseCheck(Session session)
{
#if DEBUG
System.Diagnostics.Debugger.Launch();
#endif
// Default Values
ReturnActionResult = ActionResult.Success;
session["PIDACCEPTED"] = "0";
string key = session["PIDKEY"].Replace("-", "");
IEnumerable<ParseObject> results =
ParseCustom.StartQueryRequest("Store", "Key", key);
// Not making it past this point
...
public static class ParseCustom
{
public static IEnumerable<ParseObject> StartQueryRequest(string
className, string key, string value)
{
Task<IEnumerable<ParseObject>> t = DoWorkAsync(className,
key, value);
t.Wait(); // Hitting this line in CustomAction causes
instant Failure, doesnt get past this line
return t.Result;
}
private static Task<IEnumerable<ParseObject>>
DoWorkAsync(string className, string key, string value)
{
return Task<IEnumerable<ParseObject>>.Factory.StartNew(()
=>
{
var x = AsyncTaskHelper(className, key, value);
return x.Result;
});
}
private static Task<IEnumerable<ParseObject>>
AsyncTaskHelper(string className, string key, string value)
{
return Task.Run(async () =>
{
IEnumerable<ParseObject> ParseResults = await
AccessParseAsync(className, key, value);
return ParseResults;
});
}
private static async Task<IEnumerable<ParseObject>>
AccessParseAsync(string className, string key, string value)
{
ParseQuery<ParseObject> query =
ParseObject.GetQuery(className).WhereEqualTo(key, value);
IEnumerable<ParseObject> parseResults = await
query.FindAsync();
return parseResults;
}
}
...
TempLog:
MSI (c) (0C:BC) [09:24:13:569]: Doing action: LicenseCheckAction
Action 9:24:13: LicenseCheckAction.
Action start 9:24:13: LicenseCheckAction.
MSI (c) (0C:04) [09:24:13:591]: Invoking remote custom action. DLL:
C:\Users\dirt\AppData\Local\Temp\MSIFF5.tmp, Entrypoint: LicenseCheck
MSI (c) (0C:F0) [09:24:13:592]: Cloaking enabled.
MSI (c) (0C:F0) [09:24:13:592]: Attempting to enable all disabled
privileges before calling Install on Server
MSI (c) (0C:F0) [09:24:13:592]: Connected to service for CA
interface.
MSI (c) (0C!A4) [09:24:16:819]: PROPERTY CHANGE: Adding PIDACCEPTED
property. Its value is '0'.
Action ended 9:24:16: LicenseCheckAction. Return value 3.
DEBUG: Error 2896: Executing action LicenseCheckAction failed.
The installer has encountered an unexpected error installing this
package. This may indicate a problem with this package. The error code
is 2896. The arguments are: LicenseCheckAction, ,
Action ended 9:24:16: WelcomeDlg. Return value 3.
MSI (c) (0C:BC) [09:24:16:873]: Doing action: FatalError
Action 9:24:16: FatalError.
Action start 9:24:16: FatalError.
Action 9:24:16: FatalError. Dialog created
Action ended 9:32:02: FatalError. Return value 2.
Action ended 9:32:02: INSTALL. Return value 3.
MSI (c) (0C:BC) [09:32:02:489]: Destroying RemoteAPI object.
MSI (c) (0C:F0) [09:32:02:489]: Custom Action Manager thread
ending.
=====
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