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Support streamed response from HttpNodeInstance

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SteveSandersonMS
2016-06-07 16:49:40 +01:00
parent 3440aa4344
commit 967edd2b2a
4 changed files with 52 additions and 20 deletions
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46
src/Microsoft.AspNetCore.NodeServices/HostingModels/HttpNodeInstance.cs
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@@ -1,4 +1,5 @@
using System;
using System.IO;
using System.Net.Http;
using System.Text;
using System.Text.RegularExpressions;
@@ -52,27 +53,46 @@ namespace Microsoft.AspNetCore.NodeServices
var payloadJson = JsonConvert.SerializeObject(invocationInfo, JsonSerializerSettings);
var payload = new StringContent(payloadJson, Encoding.UTF8, "application/json");
var response = await _client.PostAsync("http://localhost:" + _portNumber, payload);
var responseString = await response.Content.ReadAsStringAsync();
if (!response.IsSuccessStatusCode)
{
throw new Exception("Call to Node module failed with error: " + responseString);
var responseErrorString = await response.Content.ReadAsStringAsync();
throw new Exception("Call to Node module failed with error: " + responseErrorString);
}
var responseIsJson = response.Content.Headers.ContentType.MediaType == "application/json";
if (responseIsJson)
var responseContentType = response.Content.Headers.ContentType;
switch (responseContentType.MediaType)
{
return JsonConvert.DeserializeObject<T>(responseString);
}
case "text/plain":
// String responses can skip JSON encoding/decoding
if (typeof(T) != typeof(string))
{
throw new ArgumentException(
"Node module responded with non-JSON string. This cannot be converted to the requested generic type: " +
typeof(T).FullName);
}
if (typeof(T) != typeof(string))
{
throw new ArgumentException(
"Node module responded with non-JSON string. This cannot be converted to the requested generic type: " +
typeof(T).FullName);
}
var responseString = await response.Content.ReadAsStringAsync();
return (T)(object)responseString;
return (T)(object)responseString;
case "application/json":
var responseJson = await response.Content.ReadAsStringAsync();
return JsonConvert.DeserializeObject<T>(responseJson);
case "application/octet-stream":
// Streamed responses have to be received as System.IO.Stream instances
if (typeof(T) != typeof(Stream))
{
throw new ArgumentException(
"Node module responded with binary stream. This cannot be converted to the requested generic type: " +
typeof(T).FullName + ". Instead you must use the generic type System.IO.Stream.");
}
return (T)(object)(await response.Content.ReadAsStreamAsync());
default:
throw new InvalidOperationException("Unexpected response content type: " + responseContentType.MediaType);
}
}
protected override void OnOutputDataReceived(string outputData)