Parse.Initialize throws IOException with Parse .NET SDK on .NET Core 2.2 hosted on Heroku

Question

The following code

ParseClient.Initialize (new ParseClient.Configuration
{
    ApplicationID = "APPID",
    Key = ".NET KEY",
    ServerURI = "SERVER URL"
});

throws System.IO.IOException: The file '/app/heroku_output/[HEROKU APP NAME]' already exists.

Stack trace:

at System.IO.FileSystem.CreateDirectory(String fullPath)
at System.IO.Directory.CreateDirectory(String path)
at Parse.Internal.Utilities.StorageManager.get_PersistentStorageFileWrapper()
at Parse.Common.Internal.StorageController..ctor()
at Parse.Core.Internal.ParseCorePlugins.get_StorageController()
at Parse.Core.Internal.ParseCorePlugins.get_CurrentUserController()
at Parse.Core.Internal.ParseCorePlugins.<get_SubclassingController>b__54_0()
at Parse.Core.Internal.ObjectSubclassingController.RegisterSubclass(Type type)
at Parse.ParseClient.Initialize(Configuration configuration)
at api.Startup.ConfigureServices(IServiceCollection services) in /tmp/build_ee0c61a720b09ce072787bbc64b4001d/Startup.cs:line 50

.NET Core 2.2.104
Heroku with buildpack https://github.com/jincod/dotnetcore-buildpack#v2.2.102
Parse .NET SDK v2.0.0 (built from master branch at https://github.com/parse-community/Parse-SDK-dotNET)

@nataliec I'm using `https://parseapi.back4app.com/` It's all working locally, but not on Heroku. — Kent Robin, Mar 12 '19 at 10:46

score 0 · Answer 1 · answered Mar 10 '19 at 11:54

0

Heroku doesn't allow to write anything to the file system https://help.heroku.com/K1PPS2WM/why-are-my-file-uploads-missing-deleted

answered Mar 10 '19 at 11:54

jincod

584
4
17

Thanks for your reply, but I don't think that is the case here. The page you linked to only states that files written are deleted when the dyno is recycled, not that it is prohibited to write to the file system. In this case, without me knowing exactly, I bet it tries to store some kind of session state, hence this happens in the init method, and there's no problem with these files being recycled as the init method runs on each startup. – Kent Robin Mar 10 '19 at 14:32
Could you please share an example on Github with the bug reproducing? – jincod Mar 12 '19 at 08:13

Parse.Initialize throws IOException with Parse .NET SDK on .NET Core 2.2 hosted on Heroku

1 Answers1