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通过 AWS CloudFormation自动实现从 Amazon SNS 到 Amazon SQS 的消息收发
AWS CloudFormation 允许您使用模板文件将 AWS 资源集合作为一个单元一起创建和配置。通过本部分提供的模板示例，您可以轻松部署向队列发布的主题。模板通过以下操作协助您处理设置步骤，即创建两个队列、创建订阅队列的主题、添加策略至队列，以便主题能够向队列发送消息，以及创建 IAM 用户和群组，控制对这些资源的访问。
有关使用 AWS CloudFormation 模板部署 AWS 资源的更多信息，请参阅《AWS CloudFormation 用户指南》中的 “入门”。
使用 AWS CloudFormation 模板在中设置主题和队列 AWS 账户
该模板示例创建一个 Amazon SNS 主题，该主题能够向具备相应权限的两个 Amazon SQS 队列发送信息，以便一个 IAM 组的成员能够向该主题发布消息，而另一个组则从该队列读取消息。模板还用于创建可添加至各个群组的 IAM 用户。
您可以将模板内容复制到文件中，您也可以从 “模板” 页面下载AWS
CloudFormation 模板
我的设置SNSTopic 为发布到两个已订阅的终端节点，即两个 Amazon SQS 队列MyQueue（1 MyQueue 和 2）。 MyPublishTopicGroup 是一个 IAM 群组，其成员有权SNSTopic 使用 Publish API 操作或 sns-p ub lish 命令向 My 发布内容。该模板创建 IAM 用户 MyPublishUser ， MyQueueUser 并为他们提供登录配置文件和访问密钥。通过该模板创建堆栈的用户将指定登录界面密码作为输入参数。该模板使用 MyPublishUserKey 和为两个 IAM 用户创建访问密钥 MyQueueUserKey。 AddUserToMyPublishTopicGroup 添加 MyPublishUser 到， MyPublishTopicGroup 这样用户就可以拥有分配给该组的权限。
我RDMessageQueueGroup 是一个 IAM 群组，其成员有权使用和 DeleteMessageAPI 操作从两个 Amazon SQS 队列中读取ReceiveMessage和删除消息。 AddUserToMyQueueGroup 添加 MyQueueUser 到 “我的”，RDMessageQueueGroup 这样用户就可以拥有分配给该组的权限。 MyQueuePolicy 为 My 分配SNSTopic 向这两个队列发布通知的权限。
以下清单显示了 AWS CloudFormation 模板的内容。
{ "AWSTemplateFormatVersion" : "2010-09-09", "Description" : "AWS CloudFormation Sample Template SNSToSQS: This Template creates an SNS topic that can send messages to two SQS queues with appropriate permissions for one IAM user to publish to the topic and another to read messages from the queues. MySNSTopic is set up to publish to two subscribed endpoints, which are two SQS queues (MyQueue1 and MyQueue2). MyPublishUser is an IAM user that can publish to MySNSTopic using the Publish API. MyTopicPolicy assigns that permission to MyPublishUser. MyQueueUser is an IAM user that can read messages from the two SQS queues. MyQueuePolicy assigns those permissions to MyQueueUser. It also assigns permission for MySNSTopic to publish its notifications to the two queues. The template creates access keys for the two IAM users with MyPublishUserKey and MyQueueUserKey. ***Warning*** you will be billed for the AWS resources used if you create a stack from this template.", "Parameters": { "MyPublishUserPassword": { "NoEcho": "true", "Type": "String", "Description": "Password for the IAM user MyPublishUser", "MinLength": "1", "MaxLength": "41", "AllowedPattern": "[a-zA-Z0-9]*", "ConstraintDescription": "must contain only alphanumeric characters." }, "MyQueueUserPassword": { "NoEcho": "true", "Type": "String", "Description": "Password for the IAM user MyQueueUser", "MinLength": "1", "MaxLength": "41", "AllowedPattern": "[a-zA-Z0-9]*", "ConstraintDescription": "must contain only alphanumeric characters." } }, "Resources": { "MySNSTopic": { "Type": "AWS::SNS::Topic", "Properties": { "Subscription": [{ "Endpoint": { "Fn::GetAtt": ["MyQueue1", "Arn"] }, "Protocol": "sqs" }, { "Endpoint": { "Fn::GetAtt": ["MyQueue2", "Arn"] }, "Protocol": "sqs" } ] } }, "MyQueue1": { "Type": "AWS::SQS::Queue" }, "MyQueue2": { "Type": "AWS::SQS::Queue" }, "MyPublishUser": { "Type": "AWS::IAM::User", "Properties": { "LoginProfile": { "Password": { "Ref": "MyPublishUserPassword" } } } }, "MyPublishUserKey": { "Type": "AWS::IAM::AccessKey", "Properties": { "UserName": { "Ref": "MyPublishUser" } } }, "MyPublishTopicGroup": { "Type": "AWS::IAM::Group", "Properties": { "Policies": [{ "PolicyName": "MyTopicGroupPolicy", "PolicyDocument": { "Statement": [{ "Effect": "Allow", "Action": [ "sns:Publish" ], "Resource": { "Ref": "MySNSTopic" } }] } }] } }, "AddUserToMyPublishTopicGroup": { "Type": "AWS::IAM::UserToGroupAddition", "Properties": { "GroupName": { "Ref": "MyPublishTopicGroup" }, "Users": [{ "Ref": "MyPublishUser" }] } }, "MyQueueUser": { "Type": "AWS::IAM::User", "Properties": { "LoginProfile": { "Password": { "Ref": "MyQueueUserPassword" } } } }, "MyQueueUserKey": { "Type": "AWS::IAM::AccessKey", "Properties": { "UserName": { "Ref": "MyQueueUser" } } }, "MyRDMessageQueueGroup": { "Type": "AWS::IAM::Group", "Properties": { "Policies": [{ "PolicyName": "MyQueueGroupPolicy", "PolicyDocument": { "Statement": [{ "Effect": "Allow", "Action": [ "sqs:DeleteMessage", "sqs:ReceiveMessage" ], "Resource": [{ "Fn::GetAtt": ["MyQueue1", "Arn"] }, { "Fn::GetAtt": ["MyQueue2", "Arn"] } ] }] } }] } }, "AddUserToMyQueueGroup": { "Type": "AWS::IAM::UserToGroupAddition", "Properties": { "GroupName": { "Ref": "MyRDMessageQueueGroup" }, "Users": [{ "Ref": "MyQueueUser" }] } }, "MyQueuePolicy": { "Type": "AWS::SQS::QueuePolicy", "Properties": { "PolicyDocument": { "Statement": [{ "Effect": "Allow", "Principal": { "Service": "sns.amazonaws.com" }, "Action": ["sqs:SendMessage"], "Resource": "*", "Condition": { "ArnEquals": { "aws:SourceArn": { "Ref": "MySNSTopic" } } } }] }, "Queues": [{ "Ref": "MyQueue1" }, { "Ref": "MyQueue2" }] } } }, "Outputs": { "MySNSTopicTopicARN": { "Value": { "Ref": "MySNSTopic" } }, "MyQueue1Info": { "Value": { "Fn::Join": [ " ", [ "ARN:", { "Fn::GetAtt": ["MyQueue1", "Arn"] }, "URL:", { "Ref": "MyQueue1" } ] ] } }, "MyQueue2Info": { "Value": { "Fn::Join": [ " ", [ "ARN:", { "Fn::GetAtt": ["MyQueue2", "Arn"] }, "URL:", { "Ref": "MyQueue2" } ] ] } }, "MyPublishUserInfo": { "Value": { "Fn::Join": [ " ", [ "ARN:", { "Fn::GetAtt": ["MyPublishUser", "Arn"] }, "Access Key:", { "Ref": "MyPublishUserKey" }, "Secret Key:", { "Fn::GetAtt": ["MyPublishUserKey", "SecretAccessKey"] } ] ] } }, "MyQueueUserInfo": { "Value": { "Fn::Join": [ " ", [ "ARN:", { "Fn::GetAtt": ["MyQueueUser", "Arn"] }, "Access Key:", { "Ref": "MyQueueUserKey" }, "Secret Key:", { "Fn::GetAtt": ["MyQueueUserKey", "SecretAccessKey"] } ] ] } } } }
