正如 Meir 所提到的,您可以使用 cloudformation 中的参数和条件功能来执行此操作,例如,您将添加一个参数部分,如下所示:
Parameters:
Stage:
Type: String
Default: staging
Description: Parameter for getting the deployment stage
然后是一个映射部分,其中包含一个映射来保存所有阶段的环境变量
Mappings:
StagesMap:
staging:
CONFIG_BUCKET: staging-bucket-name
CONFIG_KEY: source-data-key-path
prod:
CONFIG_BUCKET: prod-bucket-name
CONFIG_KEY: source-data-key-path
那么你的函数可以根据你所处的环境使用变量:
AWSTemplateFormatVersion: '2010-09-09'
Transform: 'AWS::Serverless-2016-10-31'
Description: CD Demo Lambda
Resources:
CDDemoLambda:
Type: 'AWS::Serverless::Function'
Properties:
Handler: lambda_function.lambda_handler
Runtime: python3.6
CodeUri: ./LambdaCode
FunctionName: ApigatewayLambda
AutoPublishAlias: ApiLambda
Description: 'Lambda function validation'
MemorySize: 128
Timeout: 30
Events:
ApiEvent:
Type: Api
Properties:
Path: /getazs
Method: get
Environment:
Variables:
CONFIG_BUCKET: !FindInMap
- StagesMap
- Ref: Stage
- CONFIG_BUCKET
CONFIG_KEY: !FindInMap
- StagesMap
- Ref: Stage
- CONFIG_KEY
现在,当您调用 sam 部署命令时,您需要定义要部署到哪个阶段。
前任:
sam deploy --parameter-overrides Stage=prod
您的完整 cloudformation 模板应如下所示:
AWSTemplateFormatVersion: '2010-09-09'
Transform: 'AWS::Serverless-2016-10-31'
Description: CD Demo Lambda
Parameters:
Stage:
Type: String
Default: staging
Description: Parameter for getting the deployment stage
Mappings:
StagesMap:
staging:
CONFIG_BUCKET: staging-bucket-name
CONFIG_KEY: source-data-key-path
prod:
CONFIG_BUCKET: prod-bucket-name
CONFIG_KEY: source-data-key-path
Resources:
CDDemoLambda:
Type: 'AWS::Serverless::Function'
Properties:
Handler: lambda_function.lambda_handler
Runtime: python3.6
CodeUri: ./LambdaCode
FunctionName: ApigatewayLambda
AutoPublishAlias: ApiLambda
Description: 'Lambda function validation'
MemorySize: 128
Timeout: 30
Events:
ApiEvent:
Type: Api
Properties:
Path: /getazs
Method: get
Environment:
Variables:
CONFIG_BUCKET: !FindInMap
- StagesMap
- Ref: Stage
- CONFIG_BUCKET
CONFIG_KEY: !FindInMap
- StagesMap
- Ref: Stage
- CONFIG_KEY