Newtonsoft.Json.JsonSerializationException when listing pods

I am trying to connect to a Docker-for-mac Kubernetes server behind kubectl proxy.

When listing pods, I get this error:

Newtonsoft.Json.JsonSerializationException: Cannot deserialize the current JSON object (e.g. {"name":"value"}) into type 'KubeClient.Models.PodListV1' because the type requires a JSON array (e.g. [1,2,3]) to deserialize correctly.
To fix this error either change the JSON to a JSON array (e.g. [1,2,3]) or change the deserialized type so that it is a normal .NET type (e.g. not a primitive type like integer, not a collection type like an array or List<T>) that can be deserialized from a JSON object. JsonObjectAttribute can also be added to the type to force it to deserialize from a JSON object.
Path 'kind', line 1, position 8.
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)
   at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)
   at Newtonsoft.Json.JsonSerializer.Deserialize(TextReader reader, Type objectType)
   at HTTPlease.Formatters.Json.JsonFormatter.ReadAsync(InputFormatterContext context, Stream stream)
   at HTTPlease.Formatters.ContentExtensions.ReadAsAsync[TBody](HttpContent content, IInputFormatter formatter, InputFormatterContext formatterContext)
   at HTTPlease.FormatterResponseExtensions.ReadContentAsAsync[TBody](HttpResponseMessage responseMessage, IInputFormatter formatter, InputFormatterContext formatterContext)
   at HTTPlease.FormatterResponseExtensions.ReadContentAsAsync[TBody](HttpResponseMessage responseMessage, IFormatterCollection formatters)
   at HTTPlease.FormatterResponseExtensions.ReadContentAsAsync[TBody](HttpResponseMessage responseMessage)
   at KubeClient.ResourceClients.KubeResourceClient.GetResourceList[TResourceList](HttpRequest request, CancellationToken cancellationToken)
   at KubeClient.ResourceClients.PodClientV1.List(String labelSelector, String kubeNamespace, CancellationToken cancellationToken)
   at Kubectl.GetKubePodCmdlet.ProcessRecord() in /Users/felix/src/github.com/felixfbecker/PSKubectl/src/GetKubePodCmdlet.cs:line 25
   at System.Management.Automation.Cmdlet.DoProcessRecord()
   at System.Management.Automation.CommandProcessor.ProcessRecord()

Logs:

2018-08-16T19:28:42.7170010+02:00  [DBG] Performing "GET" request to 'http://127.0.0.1:8001/api/v1/namespaces/default/pods'. (cd91936f)
2018-08-16T19:28:42.7239570+02:00  [DBG] Receive response body for "GET" request to 'http://127.0.0.1:8001/api/v1/namespaces/default/pods' (OK):
"{\"kind\":\"PodList\",\"apiVersion\":\"v1\",\"metadata\":{\"selfLink\":\"/api/v1/namespaces/default/pods\",\"resourceVersion\":\"699\"},\"items\":[]}
" (29add6de)
2018-08-16T19:28:42.7240110+02:00  [DBG] Completed "GET" request to 'http://127.0.0.1:8001/api/v1/namespaces/default/pods' (OK). (be205803)

When manually requesting http://127.0.0.1:8001/api/v1/namespaces/default/pods with Postman, I get this response:

{
    "kind": "PodList",
    "apiVersion": "v1",
    "metadata": {
        "selfLink": "/api/v1/namespaces/default/pods",
        "resourceVersion": "520"
    },
    "items": []
}

[felixfbecker]

Works, thanks for the quick fix!

[tintoy]

Hi - thanks for the detailed report! I’ll have a look at this first thing tomorrow morning (sorry for the delay; I’m in Australia, and won’t get home from work until quite late tonight).