@aws-cdk/aws-redshift-alpha
Version:
The CDK Construct Library for AWS::Redshift
101 lines • 15.9 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.DatabaseQuery = void 0;
const path = require("path");
const iam = require("aws-cdk-lib/aws-iam");
const lambda = require("aws-cdk-lib/aws-lambda");
const cdk = require("aws-cdk-lib/core");
const customresources = require("aws-cdk-lib/custom-resources");
const constructs_1 = require("constructs");
const cluster_1 = require("../cluster");
class DatabaseQuery extends constructs_1.Construct {
constructor(scope, id, props) {
super(scope, id);
if (props.timeout && !cdk.Token.isUnresolved(props.timeout)) {
if (props.timeout.toMilliseconds() < cdk.Duration.seconds(1).toMilliseconds()) {
throw new Error(`The timeout for the handler must be BETWEEN 1 second and 15 minutes, got ${props.timeout.toMilliseconds()} milliseconds.`);
}
if (props.timeout.toSeconds() > cdk.Duration.minutes(15).toSeconds()) {
throw new Error(`The timeout for the handler must be between 1 second and 15 minutes, got ${props.timeout.toSeconds()} seconds.`);
}
}
const adminUser = this.getAdminUser(props);
const handler = new lambda.SingletonFunction(this, 'Handler', {
code: lambda.Code.fromAsset(path.join(__dirname, 'database-query-provider'), {
exclude: ['*.ts'],
}),
runtime: lambda.determineLatestNodeRuntime(this),
handler: 'index.handler',
timeout: props.timeout ?? cdk.Duration.minutes(1),
uuid: '3de5bea7-27da-4796-8662-5efb56431b5f',
lambdaPurpose: 'Query Redshift Database',
});
handler.addToRolePolicy(new iam.PolicyStatement({
actions: ['redshift-data:DescribeStatement', 'redshift-data:ExecuteStatement'],
resources: ['*'],
}));
adminUser.grantRead(handler);
const provider = new customresources.Provider(this, 'Provider', {
onEventHandler: handler,
role: this.getOrCreateInvokerRole(handler),
});
const queryHandlerProps = {
handler: props.handler,
clusterName: props.cluster.clusterName,
adminUserArn: adminUser.secretArn,
databaseName: props.databaseName,
...props.properties,
};
this.resource = new cdk.CustomResource(this, 'Resource', {
resourceType: 'Custom::RedshiftDatabaseQuery',
serviceToken: provider.serviceToken,
removalPolicy: props.removalPolicy,
properties: queryHandlerProps,
});
this.grantPrincipal = handler.grantPrincipal;
this.ref = this.resource.ref;
}
applyRemovalPolicy(policy) {
this.resource.applyRemovalPolicy(policy);
}
getAtt(attributeName) {
return this.resource.getAtt(attributeName);
}
getAttString(attributeName) {
return this.resource.getAttString(attributeName);
}
getAdminUser(props) {
const cluster = props.cluster;
let adminUser = props.adminUser;
if (!adminUser) {
if (cluster instanceof cluster_1.Cluster) {
if (cluster.secret) {
adminUser = cluster.secret;
}
else {
throw new Error('Administrative access to the Redshift cluster is required but an admin user secret was not provided and the cluster did not generate admin user credentials (they were provided explicitly)');
}
}
else {
throw new Error('Administrative access to the Redshift cluster is required but an admin user secret was not provided and the cluster was imported');
}
}
return adminUser;
}
/**
* Get or create the IAM role for the singleton lambda function.
* We only need one function since it's just acting as an invoker.
* */
getOrCreateInvokerRole(handler) {
const id = handler.constructName + 'InvokerRole';
const existing = cdk.Stack.of(this).node.tryFindChild(id);
return existing != null
? existing
: new iam.Role(cdk.Stack.of(this), id, {
assumedBy: new iam.ServicePrincipal('lambda.amazonaws.com'),
managedPolicies: [iam.ManagedPolicy.fromAwsManagedPolicyName('service-role/AWSLambdaBasicExecutionRole')],
});
}
}
exports.DatabaseQuery = DatabaseQuery;
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* as path from 'path';\nimport * as iam from 'aws-cdk-lib/aws-iam';\nimport * as lambda from 'aws-cdk-lib/aws-lambda';\nimport * as secretsmanager from 'aws-cdk-lib/aws-secretsmanager';\nimport * as cdk from 'aws-cdk-lib/core';\nimport * as customresources from 'aws-cdk-lib/custom-resources';\nimport { Construct } from 'constructs';\nimport { DatabaseQueryHandlerProps } from './handler-props';\nimport { Cluster } from '../cluster';\nimport { DatabaseOptions } from '../database-options';\n\nexport interface DatabaseQueryProps<HandlerProps> extends DatabaseOptions {\n  readonly handler: string;\n  readonly properties: HandlerProps;\n  /**\n   * The policy to apply when this resource is removed from the application.\n   *\n   * @default cdk.RemovalPolicy.Destroy\n   */\n  readonly removalPolicy?: cdk.RemovalPolicy;\n\n  /**\n   * The handler timeout duration\n   *\n   * @default cdk.Duration.minutes(1)\n   */\n  readonly timeout?: cdk.Duration;\n}\n\nexport class DatabaseQuery<HandlerProps> extends Construct implements iam.IGrantable {\n  readonly grantPrincipal: iam.IPrincipal;\n  readonly ref: string;\n\n  private readonly resource: cdk.CustomResource;\n\n  constructor(scope: Construct, id: string, props: DatabaseQueryProps<HandlerProps>) {\n    super(scope, id);\n\n    if (props.timeout && !cdk.Token.isUnresolved(props.timeout)) {\n      if (props.timeout.toMilliseconds() < cdk.Duration.seconds(1).toMilliseconds()) {\n        throw new Error(`The timeout for the handler must be BETWEEN 1 second and 15 minutes, got ${props.timeout.toMilliseconds()} milliseconds.`);\n      }\n      if (props.timeout.toSeconds() > cdk.Duration.minutes(15).toSeconds()) {\n        throw new Error(`The timeout for the handler must be between 1 second and 15 minutes, got ${props.timeout.toSeconds()} seconds.`);\n      }\n    }\n\n    const adminUser = this.getAdminUser(props);\n    const handler = new lambda.SingletonFunction(this, 'Handler', {\n      code: lambda.Code.fromAsset(path.join(__dirname, 'database-query-provider'), {\n        exclude: ['*.ts'],\n      }),\n      runtime: lambda.determineLatestNodeRuntime(this),\n      handler: 'index.handler',\n      timeout: props.timeout ?? cdk.Duration.minutes(1),\n      uuid: '3de5bea7-27da-4796-8662-5efb56431b5f',\n      lambdaPurpose: 'Query Redshift Database',\n    });\n    handler.addToRolePolicy(new iam.PolicyStatement({\n      actions: ['redshift-data:DescribeStatement', 'redshift-data:ExecuteStatement'],\n      resources: ['*'],\n    }));\n    adminUser.grantRead(handler);\n\n    const provider = new customresources.Provider(this, 'Provider', {\n      onEventHandler: handler,\n      role: this.getOrCreateInvokerRole(handler),\n    });\n\n    const queryHandlerProps: DatabaseQueryHandlerProps & HandlerProps = {\n      handler: props.handler,\n      clusterName: props.cluster.clusterName,\n      adminUserArn: adminUser.secretArn,\n      databaseName: props.databaseName,\n      ...props.properties,\n    };\n    this.resource = new cdk.CustomResource(this, 'Resource', {\n      resourceType: 'Custom::RedshiftDatabaseQuery',\n      serviceToken: provider.serviceToken,\n      removalPolicy: props.removalPolicy,\n      properties: queryHandlerProps,\n    });\n\n    this.grantPrincipal = handler.grantPrincipal;\n    this.ref = this.resource.ref;\n  }\n\n  public applyRemovalPolicy(policy: cdk.RemovalPolicy): void {\n    this.resource.applyRemovalPolicy(policy);\n  }\n\n  public getAtt(attributeName: string): cdk.Reference {\n    return this.resource.getAtt(attributeName);\n  }\n\n  public getAttString(attributeName: string): string {\n    return this.resource.getAttString(attributeName);\n  }\n\n  private getAdminUser(props: DatabaseOptions): secretsmanager.ISecret {\n    const cluster = props.cluster;\n    let adminUser = props.adminUser;\n    if (!adminUser) {\n      if (cluster instanceof Cluster) {\n        if (cluster.secret) {\n          adminUser = cluster.secret;\n        } else {\n          throw new Error(\n            'Administrative access to the Redshift cluster is required but an admin user secret was not provided and the cluster did not generate admin user credentials (they were provided explicitly)',\n          );\n        }\n      } else {\n        throw new Error(\n          'Administrative access to the Redshift cluster is required but an admin user secret was not provided and the cluster was imported',\n        );\n      }\n    }\n    return adminUser;\n  }\n\n  /**\n   * Get or create the IAM role for the singleton lambda function.\n   * We only need one function since it's just acting as an invoker.\n   * */\n  private getOrCreateInvokerRole(handler: lambda.SingletonFunction): iam.IRole {\n    const id = handler.constructName + 'InvokerRole';\n    const existing = cdk.Stack.of(this).node.tryFindChild(id);\n    return existing != null\n      ? existing as iam.Role\n      : new iam.Role(cdk.Stack.of(this), id, {\n        assumedBy: new iam.ServicePrincipal('lambda.amazonaws.com'),\n        managedPolicies: [iam.ManagedPolicy.fromAwsManagedPolicyName('service-role/AWSLambdaBasicExecutionRole')],\n      });\n  }\n}\n"]}