Amazon Web Services 文档中描述的 Amazon Web Services 服务或功能可能因区域而异。要查看适用于中国区域的差异，请参阅 中国的 Amazon Web Services 服务入门 (PDF)。

本文属于机器翻译版本。若本译文内容与英语原文存在差异，则一律以英文原文为准。

AWS::Serverless::Connector

配置两种资源之间的权限。有关连接器的简介，请参阅使用 Amazon SAM 连接器管理资源权限。

有关生成的 Amazon CloudFormation 资源的更多信息，请参阅Amazon CloudFormation 指定时生成的资源 AWS::Serverless::Connector。

要提供有关连接器的反馈，请在serverless-application-model Amazon GitHub 存储库中提交新问题。

语法

要在 Amazon Serverless Application Model (Amazon SAM) 模板中声明此实体，请使用以下任一语法。

嵌入式连接器

<source-resource-logical-id>:
  Connectors:
    <connector-logical-id:
      Properties:
        Destination: ResourceReference | List of ResourceReference
        Permissions: List
        SourceReference: SourceReference

AWS::Serverless::Connector

Type: AWS::Serverless::Connector
Properties:
  Destination: ResourceReference | List of ResourceReference
  Permissions: List
  Source: ResourceReference

属性

示例

嵌入式连接器

以下示例使用嵌入式连接器定义 Amazon Lambda 函数和 Amazon DynamoDB 表之间的 Write 数据连接：

Transform: AWS::Serverless-2016-10-31
...
Resources:
  MyTable:
    Type: AWS::Serverless::SimpleTable
  MyFunction:
    Type: AWS::Serverless::Function
    Connectors:
      MyConn:
        Properties:
          Destination:
            Id: MyTable
          Permissions:
            - Write
    ...

以下示例使用嵌入式连接器定义 Read 和 Write 权限：

Transform: AWS::Serverless-2016-10-31
...
Resources:
  MyFunction:
    Type: AWS::Serverless::Function
    Connectors:
      MyConn:
        Properties:
          Destination:
            Id: MyTable
          Permissions:
            - Read
            - Write
  MyTable:
    Type: AWS::DynamoDB::Table
    ...

以下示例使用嵌入式连接器定义具有 Id 以外属性的源资源：

Transform: AWS::Serverless-2016-10-31
Transform: AWS::Serverless-2016-10-31
...
Resources:
  MyApi:
    Type: AWS::Serverless::Api
    Connectors:
      ApitoLambdaConn:
        Properties:
          SourceReference:
            Qualifier: Prod/GET/foobar
          Destination:
            Id: MyTable
          Permissions:
            - Read
            - Write
  MyTable:
    Type: AWS::DynamoDB::Table
    ...

AWS::Serverless::Connector

以下示例使用该AWS::Serverless::Connector资源对一个 Amazon Lambda 函数 Amazon DynamoDB 表进行读取和写入：

MyConnector:
  Type: AWS::Serverless::Connector
  Properties:
    Source:
      Id: MyFunction
    Destination:
      Id: MyTable
    Permissions:
      - Read
      - Write

以下示例使用 AWS::Serverless::Connector 资源让 Lambda 函数写入 Amazon SNS 主题，两个资源位于同一个模板中：

MyConnector:
  Type: AWS::Serverless::Connector
  Properties:
    Source:
      Id: MyLambda
    Destination:
      Id: MySNSTopic
    Permissions:
      - Write

以下示例使用 AWS::Serverless::Connector 资源让 Amazon SNS 主题写入 Lambda 函数，然后该函数写入 Amazon DynamoDB 表，所有资源都位于同一个模板中：

Transform: AWS::Serverless-2016-10-31
Resources:
  Topic:
    Type: AWS::SNS::Topic
    Properties:
      Subscription:
        - Endpoint: !GetAtt Function.Arn
          Protocol: lambda

  Function:
    Type: AWS::Serverless::Function
    Properties:
      Runtime: nodejs16.x
      Handler: index.handler
      InlineCode: |
        const AWS = require('aws-sdk');
        exports.handler = async (event, context) => {
          const docClient = new AWS.DynamoDB.DocumentClient();
          await docClient.put({ 
            TableName: process.env.TABLE_NAME, 
            Item: {
              id: context.awsRequestId,
              event: JSON.stringify(event)
            }
          }).promise();
        };
      Environment:
        Variables:
          TABLE_NAME: !Ref Table

  Table:
    Type: AWS::Serverless::SimpleTable

  TopicToFunctionConnector:
    Type: AWS::Serverless::Connector
    Properties:
      Source: 
        Id: Topic
      Destination: 
        Id: Function
      Permissions:
        - Write

  FunctionToTableConnector:
    Type: AWS::Serverless::Connector
    Properties:
      Source: 
        Id: Function
      Destination: 
        Id: Table
      Permissions:
        - Write

以下是上面示例中转换后的 Amazon CloudFormation 模板：

"FunctionToTableConnectorPolicy": {
  "Type": "AWS::IAM::ManagedPolicy",
  "Metadata": {
    "aws:sam:connectors": {
      "FunctionToTableConnector": {
        "Source": {
          "Type": "AWS::Lambda::Function"
        },
        "Destination": {
          "Type": "AWS::DynamoDB::Table"
        }
      }
    }
  },
  "Properties": {
    "PolicyDocument": {
      "Version": "2012-10-17",
      "Statement": [
        {
          "Effect": "Allow",
          "Action": [
            "dynamodb:PutItem",
            "dynamodb:UpdateItem",
            "dynamodb:DeleteItem",
            "dynamodb:BatchWriteItem",
            "dynamodb:PartiQLDelete",
            "dynamodb:PartiQLInsert",
            "dynamodb:PartiQLUpdate"
          ],
          "Resource": [
            {
              "Fn::GetAtt": [
                "MyTable",
                "Arn"
              ]
            },
            {
              "Fn::Sub": [
                "${DestinationArn}/index/*",
                {
                  "DestinationArn": {
                    "Fn::GetAtt": [
                      "MyTable",
                      "Arn"
                    ]
                  }
                }
              ]
            }
          ]
        }
      ]
    },
    "Roles": [
      {
        "Ref": "MyFunctionRole"
      }
    ]
  }
}