Amazon web services 如何从CloudFormation模板中获取AWS IOT端点URL?
我希望我的一些Lambda资源能够使用Amazon web services 如何从CloudFormation模板中获取AWS IOT端点URL?,amazon-web-services,aws-lambda,amazon-cloudformation,aws-iot,Amazon Web Services,Aws Lambda,Amazon Cloudformation,Aws Iot,我希望我的一些Lambda资源能够使用AWS sdk的AWS.IotData({endpoint:url})函数推送到AWS IOT端点,其中端点是必需的参数 现在,我通过环境变量将端点URL传递给Lambda。然而,当放入SAM/CF模板时,我找不到检索我的物联网端点URL的方法,因此我只能!Refit 浏览时,我没有找到任何与物联网端点对应的资源 似乎只能通过AWS控制台(启用/禁用)手动配置物联网端点,如下面的屏幕截图所示: 关于如何控制设置IOT端点或至少从SAM/CF模板中读取IOT
AWS sdk
的AWS.IotData({endpoint:url})
函数推送到AWS IOT端点,其中端点是必需的参数
现在,我通过环境变量将端点URL传递给Lambda。然而,当放入SAM/CF模板时,我找不到检索我的物联网端点URL的方法,因此我只能!Ref
it
浏览时,我没有找到任何与物联网端点对应的资源
似乎只能通过AWS控制台(启用/禁用)手动配置物联网端点,如下面的屏幕截图所示:
关于如何控制设置IOT端点或至少从SAM/CF模板中读取IOT URL而不使用
aws cli
编写脚本的任何建议?恐怕您无法设置IOT端点,因为与IOT端点相关的唯一API调用是
您可以做的是创建一个Lambda支持的CloudFormation自定义资源。Lambda函数将执行descripbeendpoint
调用(根据Lambda的运行时使用您选择的AWS SDK),并返回端点的URL,以便您的其他CloudFormation资源可以使用它
这里有一个关于Lambda支持的定制资源的好例子:。对于任何对使用CloudFormation定制资源的解决方案感兴趣的人,我编写了一个简单的Lambda和一个CF模板,为其他CF堆栈提供物联网端点地址 模板yaml IoEndpointProvider.js
这是否意味着每次需要获取端点url时,我都必须调用此lambda函数?这取决于您的需要,但在这种情况下,lambda将作为自定义资源在CloudFormation模板部署期间启动一次,以向需要知道该url的所有资源提供url。谢谢您的回答,你能告诉我如何准确地在同一回购协议和其他回购协议中引用该url吗?我可以这样做吗-环境:IOT_端点:${self:Outputs.IotEndPointAddress}?我只是对CloudFormation非常陌生,而且仍然了解很多东西
AWSTemplateFormatVersion: '2010-09-09'
Transform: 'AWS::Serverless-2016-10-31'
Resources:
IotEndpointProvider:
Type: 'AWS::Serverless::Function'
Properties:
FunctionName: IotEndpointProvider
Handler: iotEndpointProvider.handler
Runtime: nodejs6.10
CodeUri: .
MemorySize: 128
Timeout: 3
Policies:
- Version: '2012-10-17'
Statement:
- Effect: Allow
Action:
- iot:DescribeEndpoint
Resource:
- '*'
IotEndpoint:
Type: 'Custom::IotEndpoint'
Properties:
ServiceToken: !GetAtt IotEndpointProvider.Arn
Outputs:
IotEndpointAddress:
Value: !GetAtt IotEndpoint.IotEndpointAddress
Export:
Name: IotEndpointAddress
var aws = require("aws-sdk");
exports.handler = function(event, context) {
console.log("REQUEST RECEIVED:\n" + JSON.stringify(event));
// For Delete requests, immediately send a SUCCESS response.
if (event.RequestType == "Delete") {
sendResponse(event, context, "SUCCESS");
return;
}
const iot = new aws.Iot();
iot.describeEndpoint({}, (err, data) => {
let responseData, responseStatus;
if (err) {
responseStatus = "FAILED";
responseData = { Error: "describeEndpoint call failed" };
console.log(responseData.Error + ":\n", err);
} else {
responseStatus = "SUCCESS";
responseData = { IotEndpointAddress: data.endpointAddress };
console.log('response data: ' + JSON.stringify(responseData));
}
sendResponse(event, context, responseStatus, responseData);
});
};
// Send response to the pre-signed S3 URL
function sendResponse(event, context, responseStatus, responseData) {
var responseBody = JSON.stringify({
Status: responseStatus,
Reason: "See the details in CloudWatch Log Stream: " + context.logStreamName,
PhysicalResourceId: context.logStreamName,
StackId: event.StackId,
RequestId: event.RequestId,
LogicalResourceId: event.LogicalResourceId,
Data: responseData
});
console.log("RESPONSE BODY:\n", responseBody);
var https = require("https");
var url = require("url");
var parsedUrl = url.parse(event.ResponseURL);
var options = {
hostname: parsedUrl.hostname,
port: 443,
path: parsedUrl.path,
method: "PUT",
headers: {
"content-type": "",
"content-length": responseBody.length
}
};
console.log("SENDING RESPONSE...\n");
var request = https.request(options, function(response) {
console.log("STATUS: " + response.statusCode);
console.log("HEADERS: " + JSON.stringify(response.headers));
// Tell AWS Lambda that the function execution is done
context.done();
});
request.on("error", function(error) {
console.log("sendResponse Error:" + error);
// Tell AWS Lambda that the function execution is done
context.done();
});
// write data to request body
request.write(responseBody);
request.end();
}