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@gammarers/aws-sns-slack-message-lambda-subscription

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This AWS CDK Construct is designed to post messages sent from an SNS topic to a Slack Webhook via a Lambda function.

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"use strict"; var _a; Object.defineProperty(exports, "__esModule", { value: true }); exports.SNSSlackMessageLambdaSubscription = void 0; const JSII_RTTI_SYMBOL_1 = Symbol.for("jsii.rtti"); const aws_resource_naming_1 = require("@gammarers/aws-resource-naming"); const aws_cdk_lib_1 = require("aws-cdk-lib"); const iam = require("aws-cdk-lib/aws-iam"); const lambda = require("aws-cdk-lib/aws-lambda"); const logs = require("aws-cdk-lib/aws-logs"); const sns = require("aws-cdk-lib/aws-sns"); const constructs_1 = require("constructs"); const send_slack_message_function_1 = require("./funcs/send-slack-message-function"); class SNSSlackMessageLambdaSubscription extends constructs_1.Construct { constructor(scope, id, props) { super(scope, id); // 👇 Get account & region const account = aws_cdk_lib_1.Stack.of(scope).account; const region = aws_cdk_lib_1.Stack.of(scope).region; // 👇 Create random 8 length string const random = aws_resource_naming_1.ResourceNaming.createRandomString(`${aws_cdk_lib_1.Names.uniqueId(scope)}.${aws_cdk_lib_1.Names.uniqueId(this)}`); const autoNaming = { functionName: `send-slack-message-${random}-func`, functionRoleName: `send-slack-message-lambda-func-exec-${random}-role`, }; const names = aws_resource_naming_1.ResourceNaming.naming(autoNaming, props.resourceNamingOption); // Lambda function const sendMessageFunction = new send_slack_message_function_1.SendSlackMessageFunction(this, 'SendSlackMessageFunction', { functionName: names.functionName, description: 'Send Slack message function', architecture: lambda.Architecture.ARM_64, role: new iam.Role(this, 'LambdaExecutionRole', { roleName: names.functionRoleName, description: '', assumedBy: new iam.ServicePrincipal('lambda.amazonaws.com'), managedPolicies: [ iam.ManagedPolicy.fromAwsManagedPolicyName('service-role/AWSLambdaBasicExecutionRole'), ], inlinePolicies: { 'get-secret-policy': new iam.PolicyDocument({ statements: [ new iam.PolicyStatement({ effect: iam.Effect.ALLOW, actions: [ 'secretsmanager:GetSecretValue', ], resources: [ `arn:aws:secretsmanager:${region}:${account}:secret:${props.slackWebhookSecretName}*`, ], }), ], }), }, }), timeout: aws_cdk_lib_1.Duration.seconds(10), paramsAndSecrets: lambda.ParamsAndSecretsLayerVersion.fromVersion(lambda.ParamsAndSecretsVersions.V1_0_103, { cacheSize: 500, logLevel: lambda.ParamsAndSecretsLogLevel.INFO, }), environment: { SLACK_WEBOOK_SECRET_NAME: props.slackWebhookSecretName, }, logFormat: lambda.LogFormat.JSON, systemLogLevel: lambda.SystemLogLevel.INFO, applicationLogLevel: lambda.ApplicationLogLevel.INFO, logGroup: new logs.LogGroup(this, 'SendSlackMessageFunctionLogGroup', { logGroupName: names.functionName ? `/aws/lambda/${names.functionName}` : undefined, retention: logs.RetentionDays.THREE_MONTHS, removalPolicy: aws_cdk_lib_1.RemovalPolicy.RETAIN_ON_UPDATE_OR_DELETE, }), }); sendMessageFunction.addPermission('InvokeFunctionFromSNS', { principal: new iam.ServicePrincipal('sns.amazonaws.com'), action: 'lambda:InvokeFunction', sourceArn: props.topic.topicArn, }); new sns.Subscription(this, 'LambdaSubscription', { topic: props.topic, protocol: sns.SubscriptionProtocol.LAMBDA, endpoint: sendMessageFunction.functionArn, }); } } exports.SNSSlackMessageLambdaSubscription = SNSSlackMessageLambdaSubscription; _a = JSII_RTTI_SYMBOL_1; SNSSlackMessageLambdaSubscription[_a] = { fqn: "@gammarers/aws-sns-slack-message-lambda-subscription.SNSSlackMessageLambdaSubscription", version: "1.0.11" }; //# 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{ ResourceDefaultNaming, ResourceNaming, ResourceNamingType } from '@gammarers/aws-resource-naming';\nimport { Duration, Names, RemovalPolicy, Stack } from 'aws-cdk-lib';\nimport * as iam from 'aws-cdk-lib/aws-iam';\nimport * as lambda from 'aws-cdk-lib/aws-lambda';\nimport * as logs from 'aws-cdk-lib/aws-logs';\nimport * as sns from 'aws-cdk-lib/aws-sns';\nimport { Construct } from 'constructs';\nimport { SendSlackMessageFunction } from './funcs/send-slack-message-function';\n\nexport interface ResourceCustomNaming {\n  readonly type: ResourceNamingType.CUSTOM;\n  readonly functionName: string;\n  readonly functionRoleName: string;\n}\n\nexport type ResourceNamingOption = ResourceDefaultNaming | ResourceCustomNaming;\n\nexport interface SNSSlackMessageLambdaSubscriptionProps {\n  readonly topic: sns.ITopic;\n  readonly slackWebhookSecretName: string;\n  readonly resourceNamingOption?: ResourceNamingOption;\n}\n\nexport class SNSSlackMessageLambdaSubscription extends Construct {\n  constructor(scope: Construct, id: string, props: SNSSlackMessageLambdaSubscriptionProps) {\n    super(scope, id);\n\n    // 👇 Get account & region\n    const account = Stack.of(scope).account;\n    const region = Stack.of(scope).region;\n\n    // 👇 Create random 8 length string\n    const random = ResourceNaming.createRandomString(`${Names.uniqueId(scope)}.${Names.uniqueId(this)}`);\n    const autoNaming = {\n      functionName: `send-slack-message-${random}-func`,\n      functionRoleName: `send-slack-message-lambda-func-exec-${random}-role`,\n    };\n    const names = ResourceNaming.naming(autoNaming, props.resourceNamingOption as ResourceNaming.ResourceNamingOption);\n\n    // Lambda function\n    const sendMessageFunction = new SendSlackMessageFunction(this, 'SendSlackMessageFunction', {\n      functionName: names.functionName,\n      description: 'Send Slack message function',\n      architecture: lambda.Architecture.ARM_64,\n      role: new iam.Role(this, 'LambdaExecutionRole', {\n        roleName: names.functionRoleName,\n        description: '',\n        assumedBy: new iam.ServicePrincipal('lambda.amazonaws.com'),\n        managedPolicies: [\n          iam.ManagedPolicy.fromAwsManagedPolicyName('service-role/AWSLambdaBasicExecutionRole'),\n        ],\n        inlinePolicies: {\n          'get-secret-policy': new iam.PolicyDocument({\n            statements: [\n              new iam.PolicyStatement({\n                effect: iam.Effect.ALLOW,\n                actions: [\n                  'secretsmanager:GetSecretValue',\n                ],\n                resources: [\n                  `arn:aws:secretsmanager:${region}:${account}:secret:${props.slackWebhookSecretName}*`,\n                ],\n              }),\n            ],\n          }),\n        },\n      }),\n      timeout: Duration.seconds(10),\n      paramsAndSecrets: lambda.ParamsAndSecretsLayerVersion.fromVersion(lambda.ParamsAndSecretsVersions.V1_0_103, {\n        cacheSize: 500,\n        logLevel: lambda.ParamsAndSecretsLogLevel.INFO,\n      }),\n      environment: {\n        SLACK_WEBOOK_SECRET_NAME: props.slackWebhookSecretName,\n      },\n      logFormat: lambda.LogFormat.JSON,\n      systemLogLevel: lambda.SystemLogLevel.INFO,\n      applicationLogLevel: lambda.ApplicationLogLevel.INFO,\n      logGroup: new logs.LogGroup(this, 'SendSlackMessageFunctionLogGroup', {\n        logGroupName: names.functionName ? `/aws/lambda/${names.functionName}` : undefined,\n        retention: logs.RetentionDays.THREE_MONTHS,\n        removalPolicy: RemovalPolicy.RETAIN_ON_UPDATE_OR_DELETE,\n      }),\n    });\n    sendMessageFunction.addPermission('InvokeFunctionFromSNS', {\n      principal: new iam.ServicePrincipal('sns.amazonaws.com'),\n      action: 'lambda:InvokeFunction',\n      sourceArn: props.topic.topicArn,\n    });\n\n    new sns.Subscription(this, 'LambdaSubscription', {\n      topic: props.topic,\n      protocol: sns.SubscriptionProtocol.LAMBDA,\n      endpoint: sendMessageFunction.functionArn,\n    });\n  }\n}\n"]}