Amazon web services 为什么函数Fn::GetAtt会给我错误?
我尝试使用fn::GetAtt函数来计算权限和引用。我的cloudformation json是: 定义的资源部分是:Amazon web services 为什么函数Fn::GetAtt会给我错误?,amazon-web-services,amazon-cloudformation,serverless,Amazon Web Services,Amazon Cloudformation,Serverless,我尝试使用fn::GetAtt函数来计算权限和引用。我的cloudformation json是: 定义的资源部分是: "Resources": { "helloworld": { "Properties": { "AutoPublishAlias": "live", "Handler": "index.handler", "Runtime": "nodejs6.10", "CodeUri": "s3://ss-sheng/src/helloWorld.zip
"Resources": {
"helloworld": {
"Properties": {
"AutoPublishAlias": "live",
"Handler": "index.handler",
"Runtime": "nodejs6.10",
"CodeUri": "s3://ss-sheng/src/helloWorld.zip",
"Role": {
"Ref": "dependrole"
},
"Timeout": 3,
"ReservedConcurrentExecutions": 5,
"Tags": {
"PROJECT": "My Point",
"COST_CENTRE": "6400073401",
"BUSINESS_UNIT": "My Programs",
"BUSINESS_CONTACT": "Greg Windsor",
"TIER": "Development"
}
},
"Type": "AWS::Serverless::Function"
},
"helloworldpermission": {
"DependsOn": "helloworld",
"Properties": {
"Action": "lambda:InvokeFunction",
"FunctionName": {
"Fn::Join": [
":",
[
{
"Ref": "helloworld"
},
{
"Fn::GetAtt": [
"helloworld",
"Version"
]
}
]
]
},
"Principal": "apigateway.amazonaws.com"
},
"Type": "AWS::Lambda::Permission"
}
}
我得到一个错误:
Template error: every Fn::GetAtt object requires two non-empty parameters, the resource name and the resource attribute
我已经给了他们两个参数“helloworld”和“Version”。
为什么lambda函数仍然显示错误
helloworld引用无服务器函数helloworld
我使用“Transform”:“AWS::Serverless-2016-10-31”,这是在云形成文件的开头定义的。对于
AWS::Serverless::Function
资源,您可以使用Ref
访问版本和别名
有关更多信息,请参阅以下链接:
因此,而不是
{
"Fn::GetAtt": [
"helloworld",
"Version"
]
}
应该是,
{
"Fn::Ref": [
"helloworld",
"Version"
]
}
您通过“资源”引用的内容:{“helloworld”:{“Role”:{“Ref”:“dependrole”。我在模板中看不到它的定义。根据以下内容:,您可以从“AWS::Serverless::Function”资源中获得的唯一属性是“Arn”。“AWS::Lambda::Version”是一个独立的资源。@Prabhatshingh您想看看本段前面定义的参数是哪个定义?dependrole