[英]AWS CloudFormation for Lambda and SNS Topic
我有一个用于形成Lambda和SNS主题的云形成脚本。
这是用于SNS主题和Lambda创建的yml脚本,
SampleSNSTopic:
Type: AWS::SNS::Topic
Properties:
DisplayName: sampleTopic
TopicName: sampleTopic
SampleLambdaFunction:
Type: AWS::Lambda::Function
DependsOn: SampleSNSTopic
Properties:
Handler: index.handler
Description: Sample Lambda function
FunctionName: TestFunction
Role: !Ref SomeRole
Code:
ZipFile: !Sub |
var AWS = require("aws-sdk");
exports.handler = function(event, context) {
var eventText = JSON.stringify(event, null, 2);
var sns = new AWS.SNS();
var params = {
Message: eventText,
TopicArn: !Ref SampleSNSTopic
};
sns.publish(params, context.done);
};
Runtime: nodejs6.10
Timeout: 300
MemorySize: 512
问题:对主题ARN使用!Ref失败,
TopicArn: !Ref SampleSNSTopic
这是正确的方法吗? 还是有其他方法可以使用SNS主题的ARN在云形成中创建lambda?
这类似于此问题的答案:
本质上,您将Ref值分配给Environment键/值:
Properties:
Handler: index.handler
Description: Sample Lambda function
FunctionName: TestFunction
Environment:
Variables:
SNS_TOPIC_ARN: !Ref SampleSNSTopic
然后,您可以在Lambda中访问它:
Code:
ZipFile: !Sub |
var AWS = require("aws-sdk");
exports.handler = function(event, context) {
var eventText = JSON.stringify(event, null, 2);
var sns = new AWS.SNS();
var params = {
Message: eventText,
TopicArn: process.env.SNS_TOPIC_ARN
};
sns.publish(params, context.done);
};
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