Question

我正在尝试将JSON http POST的正文输出到Azure服务总线。

Azure文档提供了一个示例，但这是基于时间的函数触发器，而不是HTTP触发器。

https://docs.microsoft.com/en-us/azure/azure-functions/functions-bindings-service-bus#output

这是我的run.csx

#r "Newtonsoft.Json"


using System.Net;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Primitives;
using Newtonsoft.Json;


public static async Task<IActionResult> Run(HttpRequest req)
{

    // req is the object passed into function 

    // read in the whole body, await as it reads to the end to get all?
    string requestBody = await new StreamReader(req.Body).ReadToEndAsync();

    // deserialize the request body from JSON to a dynamic object called data
    dynamic data = JsonConvert.DeserializeObject(requestBody);

    // ok so now we have our request body in JSON in the data variable.

    // we need to put it on the service bus somehow
    string message = $"Service Bus queue message created at: {DateTime.Now}";
    outputSbQueue = message;

    return (ActionResult)new OkObjectResult("Ok");

}

还有我的function.json文件：

{
  "bindings": [
    {
      "authLevel": "function",
      "name": "req",
      "type": "httpTrigger",
      "direction": "in",
      "methods": [
        "get",
        "post"
      ]
    },
    {
      "name": "$return",
      "type": "http",
      "direction": "out"
    },
    {
      "type": "serviceBus",
      "connection": "message-bus_CONNECT",
      "name": "outputSbQueue",
      "queueName": "test",
      "direction": "out"
    }
  ]
}

任何指导表示赞赏。我是新手。这纯粹是为了测试。

UPDATE 5/28/19

这有效：

#r "Newtonsoft.Json"


using System.Net;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Primitives;
using Newtonsoft.Json;
using System.Net.Http;

public static void Run(HttpRequest req, out string outputSbQueue) 
{

    // Working as of 5.28.2019 10:48 PM


    StreamReader reader = new StreamReader( req.Body );
    string text = reader.ReadToEnd();

    outputSbQueue = text;


}

但是我没有逻辑将状态返回给呼叫者。

Answer 1

您提到您需要一个http trigger。天蓝色函数必须始终具有其Bindings

像这样更改代码的第一行

public static async Task<HttpResponseMessage> Run([HttpTrigger(AuthorizationLevel.Anonymous, "post")]HttpRequestMessage req, ILogger log,out string outputSbQueue)
{
    //Your code
}

您其余的代码看起来不错。最好是用一段try{} catch块包围代码并捕获任何异常，然后使用log.LogError()将消息扔到日志中，这是最好的做法。这将帮助您轻松调试功能应用程序。

Answer 2

基于您的配置，您应该像这样更改函数声明：

public static async Task<IActionResult> Run(HttpRequest req, out string outputSbQueue)
{ ... }

绑定配置应如下所示：

{
   "bindings": [
   {
     "authLevel": "function",
     "name": "req",
     "type": "httpTrigger",
     "direction": "in",
     "methods": [
       "get",
       "post"
     ]
   },    
   {
     "type": "serviceBus",
     "connection": "message-bus_CONNECT",
     "name": "outputSbQueue",
     "queueName": "test",
     "direction": "out"
   }
 ]
}

除此之外，一切看起来还不错。

从HTTP触发的C＃函数向服务总线队列输出消息

2 个答案: