c# - azure 函数中的 HTTP 补丁

Question

我正在寻找一种在 Azure 函数中实现正确 HTTP 路径的方法。我找到了一些示例，这些示例检查每个属性的 null 并将其添加到要修补的实体中。我发现这并不理想，只是一种解决方法。我发现的 HTTP 触发函数(v2)的唯一签名是，

public async Task<IActionResult> Run(
        [HttpTrigger(AuthorizationLevel.Anonymous, "HTTP VERB", Route = "")] HttpRequest req,
     ILogger log)
    {
    }

相反，我需要传递“JsonPatchDocument”，客户端将能够传递 PATCH 文档，如下所示，

public async Task<IActionResult> Run(
    [HttpTrigger(AuthorizationLevel.Anonymous, "PATCH", Route = "")] **JsonPatchDocument<Customer> patch**,
 ILogger log)
{
}

PATCH /api/customer
[
    {
      "op": "replace",
      "path": "/firstname",
      "value": "Vijay"
    },
    {
      "op": "replace",
      "path": "/email",
      "value": "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="d6b3aeb7bba6bab396b3aeb7bba6bab3f8b5b9bb" rel="noreferrer noopener nofollow">[email protected]</a>"
    },
]

这样我就可以使用“patch.ApplyTo()”来路径属性。可以在azure函数中执行吗？

Answer 1

我找到了解决这个问题的方法。我无法将 "JsonPatchDcument" 类型传递给 azure 函数，但我可以将请求正文解析为 JsonPatchDocument，如下所示，

FunctionName("PatchInstitute")]
    public async Task<IActionResult> PatchInstitute(
        [HttpTrigger(AuthorizationLevel.Anonymous, "patch", Route = ApiConstants.BaseRoute + "/institute/{instituteId}")] HttpRequest req,
        ILogger log, [Inject]IInstituteValidator instituteValidator, int instituteId, [Inject] IInstituteProvider instituteProvider)
    {
        try
        {
           //get existing record with Id here
            var instituteDto = instituteProvider.GetInstitueProfileById(instituteId);



            using (StreamReader streamReader = new StreamReader(req.Body))
            {
                var requestBody = await streamReader.ReadToEndAsync();

                //Deserialize bosy to strongly typed JsonPatchDocument
                JsonPatchDocument<InstituteDto> jsonPatchDocument = JsonConvert.DeserializeObject<JsonPatchDocument<InstituteDto>>(requestBody);

                //Apply patch here
                jsonPatchDocument.ApplyTo(instituteDto);

                //Apply the change
                instituteProvider.UpdateInstitute(instituteDto);

            }

            return new OkResult();

        }
        catch (Exception ex)
        {
            log.LogError(ex.ToString());
           // return Generic Exception here
        }
    }

从客户端传递的 JsonPathDocument 如下所示，

[
    {
      "op": "replace",
      "path": "/isActive",
      "value": "true"
    }
]

在这里您可以传递任何要更新的字段(补丁)