Question

我在F＃中编写了一个http触发器Azure函数，我希望绑定一个DocumentClient类型的参数，以便更好地控制在Cosmos DB中完成的查询。这就是我到目前为止所做的：

Function.fs

namespace Functions

open System
open System.Net
open System.Net.Http
open Newtonsoft.Json
open Microsoft.Azure.Documents
open Microsoft.Azure.Documents.Client
open Microsoft.Azure.WebJobs
open Microsoft.Azure.WebJobs.Host
open Microsoft.Azure.WebJobs.Extensions
open Microsoft.Azure.WebJobs.Extensions.DocumentDB

module Function = 
  let Run(req: HttpRequestMessage, [<DocumentDB>] client: DocumentClient, log: TraceWriter) =
    log.Info(sprintf "F# HTTP trigger function processed a request.")
    req.CreateResponse(HttpStatusCode.OK)

function.json

{
  "disabled": false,
  "scriptFile": "..\\..\\..\\build\\Debug\\Functions\\Functions.dll",
  "entryPoint": "Functions.Function.Run",
  "bindings": [
    {
      "direction": "in",
      "type": "httpTrigger",
      "authLevel": "anonymous",
      "name": "req",
      "methods": [ "get" ],
      "route": "users"
    },
    {
      "direction": "in",
      "type": "documentDB",
      "name": "client",
      "connection": "COSMOSDB_CONNECTION_STRING"
    },
    {
      "direction": "out",
      "type": "http",
      "name": "res"
    }
  ]
}

host.json

{
  "frameworks": {
    "net46":{
      "dependencies": {
        "Dynamitey": "1.0.2",
        "FSharp.Interop.Dynamic": "3.0.0",
        "Microsoft.Azure.DocumentDB": "1.17.0",
        "Microsoft.Azure.WebJobs.Extensions.DocumentDB": "1.0.0"
      }
    }
  }
}

local.settings.json

{
  "IsEncrypted": false,
  "Values": {
    "AzureWebJobsDashboard": "",
    "AzureWebJobsStorage": "UseDevelopmentStorage=true",
    "COSMOSDB_CONNECTION_STRING": "AccountEndpoint=https://localhost:8081;AccountKey=C2y6yDjf5/R+ob0N8A7Cgv30VRDJIWEHLM+4QDU5DE2nQ9nDuVTqobD4b8mGGyPMbIZnqyMsEcaGQy67XIw/Jw==;"
  }
}

我使用开发存储和Cosmos DB模拟器在本地运行该函数。我试图将F＃描述为C＃所描述的here。它也与提到的here几乎相同。但我只收到错误Microsoft.Azure.WebJobs.Extensions.DocumentDB: 'Id' is required when binding to a DocumentClient property。

Answer 1

this issue on Github中提到了一种解决方法。它已在tooling中修复，并可在下一个版本中使用

从github复制的解决方法

我发现了这个问题并提交了   https://github.com/Azure/azure-functions-cli/issues/206。最简单的   解决方法，直到我们有更新：

转到C:\Users\{user}\appdata\local\Azure.Functions.Cli\1.0.0。

在记事本中打开func.exe.config。

找到这个：
<dependentAssembly>
  <assemblyIdentity name="Microsoft.Azure.Documents.Client" publicKeyToken="31bf3856ad364e35" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-1.11.0.0" newVersion="1.11.0.0" />
</dependentAssembly>
在这两个地方，将1.11.0.0替换为1.13.0.0，以便最终得到：
<dependentAssembly>
    <assemblyIdentity name="Microsoft.Azure.Documents.Client" publicKeyToken="31bf3856ad364e35" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-1.13.0.0" newVersion="1.13.0.0" />
  </dependentAssembly>
保存并重试。

Azure函数参数中的DocumentClient绑定

1 个答案: