discord-bot-cdk-construct
Version:
A quick CDK Construct for creating a serverless Discord bot in AWS!
102 lines • 12.6 kB
JavaScript
"use strict";
var _a;
Object.defineProperty(exports, "__esModule", { value: true });
exports.DiscordBotConstruct = void 0;
const JSII_RTTI_SYMBOL_1 = Symbol.for("jsii.rtti");
const aws_cdk_lib_1 = require("aws-cdk-lib");
const aws_lambda_1 = require("aws-cdk-lib/aws-lambda");
const aws_apigateway_1 = require("aws-cdk-lib/aws-apigateway");
const aws_lambda_nodejs_1 = require("aws-cdk-lib/aws-lambda-nodejs");
const aws_secretsmanager_1 = require("aws-cdk-lib/aws-secretsmanager");
const constructs_1 = require("constructs");
const path = require("path");
/**
* A CDK Construct for setting up a serverless Discord bot.
*/
class DiscordBotConstruct extends constructs_1.Construct {
/**
* The constructor for building the stack.
* @param {Construct} scope The Construct scope to create the Construct in.
* @param {string} id The ID of the Construct to use.
* @param {IDiscordBotConstructProps} props The properties to configure the Construct.
*/
constructor(scope, id, props) {
super(scope, id);
// Create our Secrets for our Discord APIs.
this.discordAPISecrets = new aws_secretsmanager_1.Secret(this, 'discord-bot-api-key');
// Create the Lambda for handling Interactions from our Discord bot.
const discordBotLambda = new aws_lambda_nodejs_1.NodejsFunction(this, 'discord-bot-lambda', {
runtime: aws_lambda_1.Runtime.NODEJS_18_X,
entry: path.join(__dirname, '../functions/DiscordBotFunction.js'),
handler: 'handler',
environment: {
DISCORD_BOT_API_KEY_NAME: this.discordAPISecrets.secretName,
COMMAND_LAMBDA_ARN: props.commandsLambdaFunction.functionArn,
},
timeout: aws_cdk_lib_1.Duration.seconds(3),
});
props.commandsLambdaFunction.addEnvironment('DISCORD_BOT_API_KEY_NAME', this.discordAPISecrets.secretName);
this.discordAPISecrets.grantRead(discordBotLambda);
this.discordAPISecrets.grantRead(props.commandsLambdaFunction);
props.commandsLambdaFunction.grantInvoke(discordBotLambda);
// Create our API Gateway
const discordBotAPI = new aws_apigateway_1.RestApi(this, 'discord-bot-api', {
defaultCorsPreflightOptions: {
allowOrigins: aws_apigateway_1.Cors.ALL_ORIGINS,
},
});
const discordBotAPIValidator = new aws_apigateway_1.RequestValidator(this, 'discord-bot-api-validator', {
restApi: discordBotAPI,
validateRequestBody: true,
validateRequestParameters: true,
});
// User authentication endpoint configuration
const discordBotEventItems = discordBotAPI.root.addResource('event', {
defaultCorsPreflightOptions: {
allowOrigins: [
'*',
],
},
});
// Transform our requests and responses as appropriate.
const discordBotIntegration = new aws_apigateway_1.LambdaIntegration(discordBotLambda, {
proxy: false,
requestTemplates: {
'application/json': '{\r\n\
"timestamp": "$input.params(\'x-signature-timestamp\')",\r\n\
"signature": "$input.params(\'x-signature-ed25519\')",\r\n\
"jsonBody" : $input.json(\'$\')\r\n\
}',
},
integrationResponses: [
{
statusCode: '200',
},
{
statusCode: '401',
selectionPattern: '.*[UNAUTHORIZED].*',
responseTemplates: {
'application/json': 'invalid request signature',
},
},
],
});
// Add a POST method for the Discord APIs.
discordBotEventItems.addMethod('POST', discordBotIntegration, {
apiKeyRequired: false,
requestValidator: discordBotAPIValidator,
methodResponses: [
{
statusCode: '200',
},
{
statusCode: '401',
},
],
});
}
}
exports.DiscordBotConstruct = DiscordBotConstruct;
_a = JSII_RTTI_SYMBOL_1;
DiscordBotConstruct[_a] = { fqn: "discord-bot-cdk-construct.DiscordBotConstruct", version: "0.3.5" };
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Specifically\n * requires the Lambda function where commands will be sent.\n */\nexport interface IDiscordBotConstructProps {\n  commandsLambdaFunction: Function;\n}\n\n/**\n * A CDK Construct for setting up a serverless Discord bot.\n */\nexport class DiscordBotConstruct extends Construct {\n  /**\n   * The Secrets for our Discord APIs.\n   */\n  public readonly discordAPISecrets: Secret;\n\n  /**\n   * The constructor for building the stack.\n   * @param {Construct} scope The Construct scope to create the Construct in.\n   * @param {string} id The ID of the Construct to use.\n   * @param {IDiscordBotConstructProps} props The properties to configure the Construct.\n   */\n  constructor(scope: Construct, id: string, props: IDiscordBotConstructProps) {\n    super(scope, id);\n\n    // Create our Secrets for our Discord APIs.\n    this.discordAPISecrets = new Secret(this, 'discord-bot-api-key');\n\n    // Create the Lambda for handling Interactions from our Discord bot.\n    const discordBotLambda = new NodejsFunction(this, 'discord-bot-lambda', {\n      runtime: Runtime.NODEJS_18_X,\n      entry: path.join(__dirname, '../functions/DiscordBotFunction.js'),\n      handler: 'handler',\n      environment: {\n        DISCORD_BOT_API_KEY_NAME: this.discordAPISecrets.secretName,\n        COMMAND_LAMBDA_ARN: props.commandsLambdaFunction.functionArn,\n      },\n      timeout: Duration.seconds(3),\n    });\n    props.commandsLambdaFunction.addEnvironment(\n        'DISCORD_BOT_API_KEY_NAME', this.discordAPISecrets.secretName);\n\n    this.discordAPISecrets.grantRead(discordBotLambda);\n    this.discordAPISecrets.grantRead(props.commandsLambdaFunction);\n    props.commandsLambdaFunction.grantInvoke(discordBotLambda);\n\n    // Create our API Gateway\n    const discordBotAPI = new RestApi(this, 'discord-bot-api', {\n      defaultCorsPreflightOptions: {\n        allowOrigins: Cors.ALL_ORIGINS,\n      },\n    });\n    const discordBotAPIValidator = new RequestValidator(this, 'discord-bot-api-validator', {\n      restApi: discordBotAPI,\n      validateRequestBody: true,\n      validateRequestParameters: true,\n    });\n\n    // User authentication endpoint configuration\n    const discordBotEventItems = discordBotAPI.root.addResource('event', {\n      defaultCorsPreflightOptions: {\n        allowOrigins: [\n          '*',\n        ],\n      },\n    });\n\n    // Transform our requests and responses as appropriate.\n    const discordBotIntegration: LambdaIntegration = new LambdaIntegration(discordBotLambda, {\n      proxy: false,\n      requestTemplates: {\n        'application/json': '{\\r\\n\\\n              \"timestamp\": \"$input.params(\\'x-signature-timestamp\\')\",\\r\\n\\\n              \"signature\": \"$input.params(\\'x-signature-ed25519\\')\",\\r\\n\\\n              \"jsonBody\" : $input.json(\\'$\\')\\r\\n\\\n            }',\n      },\n      integrationResponses: [\n        {\n          statusCode: '200',\n        },\n        {\n          statusCode: '401',\n          selectionPattern: '.*[UNAUTHORIZED].*',\n          responseTemplates: {\n            'application/json': 'invalid request signature',\n          },\n        },\n      ],\n    });\n\n    // Add a POST method for the Discord APIs.\n    discordBotEventItems.addMethod('POST', discordBotIntegration, {\n      apiKeyRequired: false,\n      requestValidator: discordBotAPIValidator,\n      methodResponses: [\n        {\n          statusCode: '200',\n        },\n        {\n          statusCode: '401',\n        },\n      ],\n    });\n  }\n}\n"]}