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@alma-cdk/cross-region-parameter

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Store AWS SSM Parameter Store Parameters into another AWS Region with AWS CDK

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"use strict"; var _a; Object.defineProperty(exports, "__esModule", { value: true }); exports.CrossRegionParameter = exports.OnEvent = void 0; const JSII_RTTI_SYMBOL_1 = Symbol.for("jsii.rtti"); const aws_cdk_lib_1 = require("aws-cdk-lib"); const iam = require("aws-cdk-lib/aws-iam"); const ssm = require("aws-cdk-lib/aws-ssm"); const cr = require("aws-cdk-lib/custom-resources"); const change_case_1 = require("change-case"); const constructs_1 = require("constructs"); const add_1 = require("./errors/add"); var OnEvent; (function (OnEvent) { OnEvent["ON_CREATE"] = "onCreate"; OnEvent["ON_UPDATE"] = "onUpdate"; OnEvent["ON_DELETE"] = "onDelete"; })(OnEvent || (exports.OnEvent = OnEvent = {})); /** Cross-Region SSM Parameter. */ class CrossRegionParameter extends constructs_1.Construct { /** * Define a new Cross-Region SSM Parameter. * * @example * new CrossRegionParameter(this, 'SayHiToSweden', { * region: 'eu-north-1', * name: '/parameter/path/message', * description: 'Some message for the Swedes', * value: 'Hej då!', * }); */ constructor(scope, name, props) { super(scope, name); this.validateRegion(props.region); const st = this.definePolicy(props); const policy = new iam.Policy(this, `${(0, change_case_1.pascalCase)(name)}CrPolicy`, { statements: [st], }); const role = new iam.Role(this, "ParameterCrRole", { assumedBy: new iam.ServicePrincipal("lambda.amazonaws.com"), }); role.attachInlinePolicy(policy); const customResource = new cr.AwsCustomResource(this, "AwsCustomResource", { onCreate: this.defineCreateUpdateSdkCall(OnEvent.ON_CREATE, props), onUpdate: this.defineCreateUpdateSdkCall(OnEvent.ON_UPDATE, props), onDelete: this.defineDeleteSdkCall(props), policy: cr.AwsCustomResourcePolicy.fromStatements([st]), role, }); customResource.node.addDependency(role); } definePhysicalResourceId(props) { const { region, name } = props; return cr.PhysicalResourceId.of(`CrossRegionParameter${(0, change_case_1.pascalCase)(region)}${(0, change_case_1.pascalCase)(name)}`); } defineCreateUpdateSdkCall(eventType, props) { const { region, name, description, value, allowedPattern, keyId, parameterTier: tier = ssm.ParameterTier.STANDARD, parameterType: type = ssm.ParameterType.STRING, tags, policies, } = props; const parameters = { Name: name /* required */, Value: value /* required */, AllowedPattern: allowedPattern, Description: description, KeyId: keyId, Overwrite: eventType !== OnEvent.ON_CREATE, Policies: policies, Tags: this.tagPropsToTagParams(tags), Tier: tier, Type: type, }; return { physicalResourceId: this.definePhysicalResourceId(props), region, service: "SSM", action: "putParameter", parameters, }; } /** Ensure Parameter target region is not the same as the current "source" region. */ validateRegion(region) { const currentRegion = aws_cdk_lib_1.Stack.of(this).region; if (currentRegion === region) { (0, add_1.addError)(this, `Parameter target region ${region} can not be the same as source region ${currentRegion}`); } } /** Convert CDK/JSII compatible TagPropList to SDK compatible TagList. */ tagPropsToTagParams(tags) { return tags?.map((t) => ({ Key: t.key, Value: t.value, })); } defineDeleteSdkCall(props) { const { region, name } = props; return { physicalResourceId: this.definePhysicalResourceId(props), region, service: "SSM", action: "deleteParameter", parameters: { Name: name, }, }; } definePolicy(props) { const { region, name } = props; // Depending if path parameter or simple parameter we may or may not need to set a slash separator to resource ARN const separator = name.indexOf("/") === 0 ? "" : "/"; return new iam.PolicyStatement({ actions: ["ssm:PutParameter", "ssm:DeleteParameter"], resources: [ `arn:aws:ssm:${region}:${aws_cdk_lib_1.Stack.of(this).account}:parameter${separator}${name}`, ], effect: iam.Effect.ALLOW, }); } } exports.CrossRegionParameter = CrossRegionParameter; _a = JSII_RTTI_SYMBOL_1; CrossRegionParameter[_a] = { fqn: "@alma-cdk/cross-region-parameter.CrossRegionParameter", version: "1.0.1" }; //# 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{ Stack } from \"aws-cdk-lib\";\nimport * as iam from \"aws-cdk-lib/aws-iam\";\nimport * as ssm from \"aws-cdk-lib/aws-ssm\";\nimport * as cr from \"aws-cdk-lib/custom-resources\";\nimport { PutParameterRequest, TagList } from \"aws-sdk/clients/ssm\";\nimport { pascalCase } from \"change-case\";\nimport { Construct } from \"constructs\";\nimport { addError } from \"./errors/add\";\nimport { CrossRegionParameterProps, TagPropList } from \"./props\";\n\nexport enum OnEvent {\n  ON_CREATE = \"onCreate\",\n  ON_UPDATE = \"onUpdate\",\n  ON_DELETE = \"onDelete\",\n}\n\n/** Cross-Region SSM Parameter. */\nexport class CrossRegionParameter extends Construct {\n  /**\n   * Define a new Cross-Region SSM Parameter.\n   *\n   * @example\n   * new CrossRegionParameter(this, 'SayHiToSweden', {\n   *   region: 'eu-north-1',\n   *   name: '/parameter/path/message',\n   *   description: 'Some message for the Swedes',\n   *   value: 'Hej då!',\n   * });\n   */\n  constructor(\n    scope: Construct,\n    name: string,\n    props: CrossRegionParameterProps,\n  ) {\n    super(scope, name);\n\n    this.validateRegion(props.region);\n\n    const st = this.definePolicy(props);\n\n    const policy = new iam.Policy(this, `${pascalCase(name)}CrPolicy`, {\n      statements: [st],\n    });\n\n    const role = new iam.Role(this, \"ParameterCrRole\", {\n      assumedBy: new iam.ServicePrincipal(\"lambda.amazonaws.com\"),\n    });\n\n    role.attachInlinePolicy(policy);\n\n    const customResource = new cr.AwsCustomResource(this, \"AwsCustomResource\", {\n      onCreate: this.defineCreateUpdateSdkCall(OnEvent.ON_CREATE, props),\n      onUpdate: this.defineCreateUpdateSdkCall(OnEvent.ON_UPDATE, props),\n      onDelete: this.defineDeleteSdkCall(props),\n      policy: cr.AwsCustomResourcePolicy.fromStatements([st]),\n      role,\n    });\n\n    customResource.node.addDependency(role);\n  }\n\n  private definePhysicalResourceId(\n    props: CrossRegionParameterProps,\n  ): cr.PhysicalResourceId {\n    const { region, name } = props;\n    return cr.PhysicalResourceId.of(\n      `CrossRegionParameter${pascalCase(region)}${pascalCase(name)}`,\n    );\n  }\n\n  private defineCreateUpdateSdkCall(\n    eventType: OnEvent,\n    props: CrossRegionParameterProps,\n  ): cr.AwsSdkCall {\n    const {\n      region,\n      name,\n      description,\n      value,\n      allowedPattern,\n      keyId,\n      parameterTier: tier = ssm.ParameterTier.STANDARD,\n      parameterType: type = ssm.ParameterType.STRING,\n      tags,\n      policies,\n    } = props;\n\n    const parameters: PutParameterRequest = {\n      Name: name /* required */,\n      Value: value /* required */,\n      AllowedPattern: allowedPattern,\n      Description: description,\n      KeyId: keyId,\n      Overwrite: eventType !== OnEvent.ON_CREATE,\n      Policies: policies,\n      Tags: this.tagPropsToTagParams(tags),\n      Tier: tier,\n      Type: type,\n    };\n\n    return {\n      physicalResourceId: this.definePhysicalResourceId(props),\n      region,\n      service: \"SSM\",\n      action: \"putParameter\",\n      parameters,\n    };\n  }\n\n  /** Ensure Parameter target region is not the same as the current \"source\" region. */\n  private validateRegion(region: string): void {\n    const currentRegion = Stack.of(this).region;\n    if (currentRegion === region) {\n      addError(\n        this,\n        `Parameter target region ${region} can not be the same as source region ${currentRegion}`,\n      );\n    }\n  }\n\n  /** Convert CDK/JSII compatible TagPropList to SDK compatible TagList. */\n  private tagPropsToTagParams(tags?: TagPropList): TagList | undefined {\n    return tags?.map((t) => ({\n      Key: t.key,\n      Value: t.value,\n    }));\n  }\n\n  private defineDeleteSdkCall(props: CrossRegionParameterProps): cr.AwsSdkCall {\n    const { region, name } = props;\n\n    return {\n      physicalResourceId: this.definePhysicalResourceId(props),\n      region,\n      service: \"SSM\",\n      action: \"deleteParameter\",\n      parameters: {\n        Name: name,\n      },\n    };\n  }\n\n  private definePolicy(props: CrossRegionParameterProps): iam.PolicyStatement {\n    const { region, name } = props;\n\n    // Depending if path parameter or simple parameter we may or may not need to set a slash separator to resource ARN\n    const separator = name.indexOf(\"/\") === 0 ? \"\" : \"/\";\n\n    return new iam.PolicyStatement({\n      actions: [\"ssm:PutParameter\", \"ssm:DeleteParameter\"],\n      resources: [\n        `arn:aws:ssm:${region}:${Stack.of(this).account}:parameter${separator}${name}`,\n      ],\n      effect: iam.Effect.ALLOW,\n    });\n  }\n}\n"]}