Question

我需要组中的事物列表或来自AWS的事物列表，我试图从AWSIoT Reference中找到解决方案，所以我使用下面的代码来获取它。以前，我曾经使用后端服务中的常规API调用来获取它，但我需要与AWS完全结合使用。

   func initializeAWS() {

       let credentialsProvider = AWSCognitoCredentialsProvider(regionType:AWS_REGION,
                                                               identityPoolId:IDENTITY_POOL_ID)
       initializeControlPlane(credentialsProvider: credentialsProvider)

   }

   func initializeControlPlane(credentialsProvider: AWSCredentialsProvider) {

       let controlPlaneServiceConfiguration = AWSServiceConfiguration(region:AWS_REGION, credentialsProvider:credentialsProvider)

       AWSServiceManager.default().defaultServiceConfiguration = controlPlaneServiceConfiguration
       iot = AWSIoT.default()

       let request = AWSIoTListThingsInThingGroupRequest()
       request?.thingGroupName = "XXXGroupName"
       let output = iot.listThings(inThingGroup: request!)
       print("output is \(output.result)")
       print("error is \(output.error)")

   }

我在这里使用AWSIoT和AWSIoTListThingsInThingGroupRequest对象来获取我可能知道这是正确的获取方法的列表？如果是的话，我是output和error两个对象都为零。

我试图从Github中找到AWS IOT示例的解决方案，但没有得到任何相关的答案。或者iotDataManager中是否有任何东西可以列出清单？请你能帮我吗？有关更多信息，我对AWS Github Fetching list of things in things group

提出了疑问。

Answer 1

我检查了日志级别的输出是否已获得，所有配置也是正确的，唯一我不知道的事情是如何获得响应，获得方法如下。

let credentialsProvider = AWSCognitoCredentialsProvider(regionType:AWS_REGION,
                                                        identityPoolId:IDENTITY_POOL_ID)

let controlPlaneServiceConfiguration = AWSServiceConfiguration(region:AWS_REGION, credentialsProvider:credentialsProvider)

AWSServiceManager.default().defaultServiceConfiguration = controlPlaneServiceConfiguration
iot = AWSIoT.default()

let request = AWSIoTListThingsInThingGroupRequest()
request?.thingGroupName = "XXXGroupName"
let output = iot.listThings(inThingGroup: request!)

output.continueOnSuccessWith { (response) -> Any? in

    if let result = response.result, let things = result.things {
        self.awsDevices = things
        completionHandler(true)
    }
    return self.awsDevices

}

从AWS IoT中获取物联网中的物联网或物联网列表

1 个答案: