AWS SAM 计划 Lambda 未按计划触发答案

【问题标题】：AWS SAM Schedule Lambda is not triggering as per ScheduleAWS SAM 计划 Lambda 未按计划触发
【发布时间】：2021-08-15 07:52:33
【问题描述】：

我有一个用例，我需要每 2 分钟调用一次 API 来检查更新并将结果存储到数据库中。同样，我正在尝试使用 AWS SAM CLI 使用 Python 的 AWS Schedule lambda 函数，但我的 Lambda 函数没有被触发。以下是我的代码：

app.py

def lambda_schedule(event, context):
    print("Lambda Schedule event started Successfully......")
    print("Lambda function ARN:", context.invoked_function_arn)
    print("CloudWatch log stream name:", context.log_stream_name)
    print("CloudWatch log group name:", context.log_group_name)
    print("Lambda Request ID:", context.aws_request_id)
    print("Lambda Schedule event ended Successfully......")

模板.yaml

CronLambdaFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: hello_world/
      Handler: app.lambda_schedule
      Runtime: python3.8
    Events:
      PullBalanceScheduleRule:
        Type: AWS::Events::Rule
        Properties:
          EventPattern:
            source:
              - "aws.events"

PullBalanceScheduleRule:
    Type: AWS::Events::Rule
    Properties:
      Description: "PullBalanceScheduleRule"
      ScheduleExpression: "rate(2 minutes)"
      State: "ENABLED"
      Targets:
        -
          Arn: !GetAtt CronLambdaFunction.Arn
          Id: "CronLambdaFunction"
  PermissionForEventsToInvokeLambda:
    Type: AWS::Lambda::Permission
    Properties:
      FunctionName: !Ref "PullBalanceScheduleRule"
      Action: "lambda:InvokeFunction"
      Principal: "events.amazonaws.com"
      SourceArn:
        -
          Arn: !GetAtt PullBalanceScheduleRule.Arn
          Id: "PullBalanceScheduleRule"

谁能告诉我，我的代码有什么问题或者我的代码缺少什么？

【问题讨论】：

标签： python-3.x aws-sam aws-sam-cli

【解决方案1】：

我犯了错误。错误出现在“权限”部分。我在这里发布了正确的 yaml 配置，以便对 AWS SAM CLI 的新手有所帮助。

app.py

def lambda_schedule(event, context):
    print("Lambda Schedule event started Successfully......")
    print("Lambda function ARN:", context.invoked_function_arn)
    print("CloudWatch log stream name:", context.log_stream_name)
    print("CloudWatch log group name:", context.log_group_name)
    print("Lambda Request ID:", context.aws_request_id)
    print("Lambda Schedule event ended Successfully......")

模板.yaml

CronLambdaFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: hello_world/
      Handler: app.lambda_schedule
      Runtime: python3.8
    Events:
      PullBalanceScheduleRule:
        Type: AWS::Events::Rule
        Properties:
          EventPattern:
            source:
              - "aws.events"

PullBalanceScheduleRule:
    Type: AWS::Events::Rule
    Properties:
      Description: "PullBalanceScheduleRule"
      ScheduleExpression: "rate(2 minutes)"
      State: "ENABLED"
      Targets:
        -
          Arn: !GetAtt CronLambdaFunction.Arn
          Id: "CronLambdaFunction"
PermissionForEventsToInvokeLambda:
    Type: AWS::Lambda::Permission
    Properties:
      FunctionName: !Ref "CronLambdaFunction"
      Action: "lambda:InvokeFunction"
      Principal: "events.amazonaws.com"
      SourceArn:
        Fn::GetAtt:
          - "PullBalanceScheduleRule"
          - "Arn"

【讨论】：