BodyAsFile .json files interferes with WatchStaticMappings

[markdebruijne]

• Configure ReadStaticMappings(myMappingsFolder) to import request matchers from static .json files
• Also Configure FileWatchers for that folder: WatchStaticMappings(myMappingsFolder)
• Configure one of those requests to respond based on a BodyAsFile

"Response": {
    "StatusCode": 200,
    "BodyAsFile": "mappings/myResponseBodyFile.json"
  }

• Run the application, which will monitor all files in that folder
• Update myResponseBodyFile.json

Result: Unhandled exception occurs

System.ArgumentNullException
  HResult=0x80004003
  Message=Value cannot be null.
  Source=WireMock.Net
  StackTrace:
   at WireMock.Validation.Check.NotNull[T](T value, String parameterName) in D:\data\inetpub\WireMock.Net\src\WireMock.Net\Validation\Check.cs:line 44
   at WireMock.Server.FluentMockServer.DeserializeAndAddOrUpdateMapping(MappingModel mappingModel, Nullable`1 guid, String path) in D:\data\inetpub\WireMock.Net\src\WireMock.Net\Server\FluentMockServer.Admin.cs:line 415
   at WireMock.Server.FluentMockServer.ReadStaticMappingAndAddOrUpdate(String path) in D:\data\inetpub\WireMock.Net\src\WireMock.Net\Server\FluentMockServer.Admin.cs:line 202
   at WireMock.Server.FluentMockServer.<WatchStaticMappings>b__12_1(Object sender, FileSystemEventArgs args) in D:\data\inetpub\WireMock.Net\src\WireMock.Net\Server\FluentMockServer.Admin.cs:line 164
   at WireMock.Util.EnhancedFileSystemWatcher.OnChanged(FileSystemEventArgs e) in D:\data\inetpub\WireMock.Net\src\WireMock.Net\Util\EnhancedFileSystemWatcher.cs:line 128
   at WireMock.Util.EnhancedFileSystemWatcher.OnChanged(Object sender, FileSystemEventArgs e) in D:\data\inetpub\WireMock.Net\src\WireMock.Net\Util\EnhancedFileSystemWatcher.cs:line 224
   at System.IO.FileSystemWatcher.NotifyFileSystemEventArgs(WatcherChangeTypes changeType, String name)
   at System.IO.FileSystemWatcher.ParseEventBufferAndNotifyForEach(Byte[] buffer)
   at System.IO.FileSystemWatcher.ReadDirectoryChangesCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* overlappedPointer)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

It breaks because the .json file only contains the Body of the response, while the deserializer is expecting both a Request: {} and Response: {} element

This feels like a bug because I want to have my request .json and responseBody .json stored close together on my file system. Is there another approach to store them differently which is compatible with the file watchers. I do want (during development) want to be able to watch both.

[StefH]

The ReadStaticMappings and WatchStaticMappings are meant to be used for the complete mappings. A complete mapping contains both the request and the response. For an example, see https://github.com/WireMock-Net/WireMock.Net/wiki/Admin-API-Reference#__adminmappings-1.

If you want to use BodyAsFile, you could just try to use a file with another extension, like .response. That kind of files will not be read or watched.

Note that you probably need to set caching to false, (BodyAsFileIsCached = false) for that specific mapping.

[StefH]

@markdebruijne does above text answer your question? Or do you still have more questions?

[StefH]

@markdebruijne Closing this issue.

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