public Task <GraphQLRequestDeserializationResult> DeserializeFromJsonBodyAsync(HttpRequest httpRequest, CancellationToken cancellationToken = default)
{
cancellationToken.ThrowIfCancellationRequested();
// Do not explicitly or implicitly (via using, etc.) call dispose because StreamReader will dispose inner stream.
// This leads to the inability to use the stream further by other consumers/middlewares of the request processing
// pipeline. In fact, it is absolutely not dangerous not to dispose StreamReader as it does not perform any useful
// work except for the disposing inner stream.
var reader = new StreamReader(httpRequest.Body);
var result = new GraphQLRequestDeserializationResult {
IsSuccessful = true
};
using (var jsonReader = new JsonTextReader(reader)
{
CloseInput = false
})
{
int firstChar = reader.Peek();
cancellationToken.ThrowIfCancellationRequested();
switch (firstChar)
{
case '{':
result.Single = ToGraphQLRequest(_serializer.Deserialize <InternalGraphQLRequest>(jsonReader));
break;
case '[':
result.Batch = _serializer.Deserialize <InternalGraphQLRequest[]>(jsonReader)
.Select(ToGraphQLRequest)
.ToArray();
break;
default:
result.IsSuccessful = false;
break;
}
}
return(Task.FromResult(result));
}
public async Task <GraphQLRequestDeserializationResult> DeserializeFromJsonBodyAsync(HttpRequest httpRequest, CancellationToken cancellationToken = default)
{
var bodyReader = httpRequest.BodyReader;
JsonTokenType jsonTokenType;
try
{
jsonTokenType = await PeekJsonTokenTypeAsync(bodyReader, cancellationToken);
}
catch (JsonException)
{
// Invalid request content, assign None so it falls through to IsSuccessful = false
jsonTokenType = JsonTokenType.None;
}
cancellationToken.ThrowIfCancellationRequested();
var result = new GraphQLRequestDeserializationResult {
IsSuccessful = true
};
switch (jsonTokenType)
{
case JsonTokenType.StartObject:
result.Single = ToGraphQLRequest(
await JsonSerializer.DeserializeAsync <InternalGraphQLRequest>(bodyReader.AsStream(), _serializerOptions, cancellationToken));
return(result);
case JsonTokenType.StartArray:
result.Batch = (await JsonSerializer.DeserializeAsync <InternalGraphQLRequest[]>(bodyReader.AsStream(), _serializerOptions, cancellationToken))
.Select(ToGraphQLRequest)
.ToArray();
return(result);
default:
result.IsSuccessful = false;
return(result);
}
}
