Azure编排功能：如何获取Http请求标头？

Question

我有一个调用编排函数的HTTP触发器：

    [FunctionName("HttpStart")]
    public static async Task<HttpResponseMessage> Run(
        [HttpTrigger(AuthorizationLevel.Function, methods: "post", Route = "orchestrators/{functionName}")] HttpRequestMessage req,
        [OrchestrationClient] DurableOrchestrationClientBase starter,
        string functionName,
        ILogger log)
    {
        // Function input comes from the request content.
        dynamic eventData = await req.Content.ReadAsAsync<object>();
        string instanceId = await starter.StartNewAsync(functionName, eventData);

编排函数的标题如下：

public static async Task Run([OrchestrationTrigger] DurableOrchestrationContextBase context, TraceWriter log)

鉴于业务流程功能中没有HTTP上下文，如何从HTTP触发器将请求标头转发到业务流程功能中？

Answer 1

Took a look at this sample：

#r "Microsoft.Azure.WebJobs.Extensions.DurableTask"
#r "Microsoft.Extensions.Logging"
#r "Newtonsoft.Json"

using System.Net;
using System.Net.Http.Headers;

public static async Task<HttpResponseMessage> Run(
    HttpRequestMessage req,
    DurableOrchestrationClient starter,
    string functionName,
    ILogger log)
{
    // Function input comes from the request content.
    dynamic eventData = await req.Content.ReadAsAsync<object>();
    string instanceId = await starter.StartNewAsync(functionName, eventData);
    
    log.LogInformation($"Started orchestration with ID = '{instanceId}'.");
    
    return starter.CreateCheckStatusResponse(req, instanceId);
}