GetStateAsync throws exception if key not found when using json contentType

[MargaretKrutikova]

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I am using redis for state store component with RedisJSON module, and when getting state with contentType metadata set to application/json, method GetStateAsync on the dapr client throws the following exception if the key doesn't exist:

Error when trying to Retrieve ... with Id: ..."Error","@x":"Dapr.DaprException: 
State operation failed: the Dapr endpoint indicated a failure. See InnerException for details.
Grpc.Core.RpcException: Status(StatusCode=\"Internal\", Detail=\"fail to get <...> from state store local: redis: nil\")
   at Dapr.Client.DaprClientGrpc.GetStateAsync[TValue](String storeName, String key, Nullable`1 consistencyMode, IReadOnlyDictionary`2 metadata, CancellationToken cancellationToken)

Is this an intended behavior or more like a bug? When not using any metadata the return value from GetStateAsync is null with no exception thrown if the key doesn't exist.

Thanks!

[halspang]

@MargaretKrutikova - I think we're supposed to return null instead of erroring out. How exactly are you setting the metadata? The format of from state store local: redis: nil is concerning for me. It looks like something may not be set right in the actual request.

[MargaretKrutikova]

I apologize for the late reply, this how we are doing it:

Dictionary<string, string> metadata = new() { { "contentType", "application/json" } };
var data = await daprClient.GetStateAsync<SomeData>(config.StoreName, dataId, metadata: metadata);

Is there anything we are missing here?

[robert2ship]

Hello,

I have the same problem.
I had to change in my code to explicitly set the content type to json, to support the query api.
And now I get the surprise of getting errors when keys not found...

Thanks!

[CormacLennon]

We have also started to get this issue, also after adding the "contentType", "application/json" metadata so we could use querying with redis

[kenchou]

I encountered the same issue.
I used image docker.io/redis/redis-stack-server:latest instead of the Redis pulled by dapr init to enable ReJSON.
When specifying metadata.contentType=application/json, it throws an error if the key does not exist.

I noticed that the message "fail to get test from state store statestore: redis: nil" is returned from Dapr's state service.

curl 'http://localhost:3500/v1.0/state/statestore/test' -v
* Host localhost:3500 was resolved.
* IPv6: ::1
* IPv4: 127.0.0.1
*   Trying [::1]:3500...
* Connected to localhost (::1) port 3500
> GET /v1.0/state/statestore/test HTTP/1.1
> Host: localhost:3500
> User-Agent: curl/8.7.1
> Accept: */*
>
* Request completely sent off
< HTTP/1.1 204 No Content
< Content-Type: text/plain; charset=utf-8
< Traceparent: 00-4f62151a9cfab3eeb5fc6bc0c4c4889f-50b6560d85adeb3e-01
< Date: Fri, 06 Sep 2024 04:33:06 GMT
<
* Connection #0 to host localhost left intact


curl 'http://localhost:3500/v1.0/state/statestore/test?metadata.contentType=application/json' -v
* Host localhost:3500 was resolved.
* IPv6: ::1
* IPv4: 127.0.0.1
*   Trying [::1]:3500...
* Connected to localhost (::1) port 3500
> GET /v1.0/state/statestore/test?metadata.contentType=application/json HTTP/1.1
> Host: localhost:3500
> User-Agent: curl/8.7.1
> Accept: */*
>
* Request completely sent off
< HTTP/1.1 500 Internal Server Error
< Content-Type: application/json
< Traceparent: 00-b6bf3bdefcded5578f8aebada999418d-0d819f29f861d7b8-01
< Date: Fri, 06 Sep 2024 04:33:40 GMT
< Content-Length: 98
<
* Connection #0 to host localhost left intact
{"errorCode":"ERR_STATE_GET","message":"fail to get test from state store statestore: redis: nil"}

@halspang