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cdk-korean-chatbot-stack.ts
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cdk-korean-chatbot-stack.ts
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import * as cdk from 'aws-cdk-lib';
import { Construct } from 'constructs';
import * as lambda from "aws-cdk-lib/aws-lambda";
import * as path from "path";
import * as iam from 'aws-cdk-lib/aws-iam';
import * as s3 from 'aws-cdk-lib/aws-s3';
import * as cloudFront from 'aws-cdk-lib/aws-cloudfront';
import * as origins from 'aws-cdk-lib/aws-cloudfront-origins';
import * as apiGateway from 'aws-cdk-lib/aws-apigateway';
import * as s3Deploy from "aws-cdk-lib/aws-s3-deployment";
import * as dynamodb from 'aws-cdk-lib/aws-dynamodb';
import * as apigatewayv2 from 'aws-cdk-lib/aws-apigatewayv2';
import * as opensearch from 'aws-cdk-lib/aws-opensearchservice';
import * as ec2 from 'aws-cdk-lib/aws-ec2';
import * as kendra from 'aws-cdk-lib/aws-kendra';
import * as secretsmanager from 'aws-cdk-lib/aws-secretsmanager';
import * as lambdaEventSources from 'aws-cdk-lib/aws-lambda-event-sources';
import * as sqs from 'aws-cdk-lib/aws-sqs';
import { SqsEventSource } from 'aws-cdk-lib/aws-lambda-event-sources';
const region = process.env.CDK_DEFAULT_REGION;
const accountId = process.env.CDK_DEFAULT_ACCOUNT;
const debug = false;
const stage = 'dev';
const s3_prefix = 'docs';
const projectName = `korean-chatbot-with-rag`;
const bucketName = `storage-for-${projectName}-${accountId}-${region}`;
let kendra_region = process.env.CDK_DEFAULT_REGION; // "us-west-2"
const rag_method = 'RetrievalPrompt'; // RetrievalPrompt, RetrievalQA, ConversationalRetrievalChain
const opensearch_account = "admin";
const opensearch_passwd = "Wifi1234!";
const enableReference = 'true';
let opensearch_url = "";
const debugMessageMode = 'false'; // if true, debug messages will be delivered to the client.
const useParallelRAG = 'true';
const numberOfRelevantDocs = '6';
const kendraMethod = "custom_retriever"; // custom_retriever or kendra_retriever
const allowDualSearch = 'false';
const capabilities = JSON.stringify(["kendra", "opensearch"]);
const supportedFormat = JSON.stringify(["pdf", "txt", "csv", "pptx", "ppt", "docx", "doc", "xlsx", "py", "js", "md", 'png', 'jpeg', 'jpg']);
const separated_chat_history = 'true';
const max_object_size = 102400000; // 100 MB max size of an object, 50MB(default)
const enableHybridSearch = 'true';
const enableParallelSummary = 'true';
const enalbeParentDocumentRetrival = 'true';
const speech_generation = 'false';
const prompt_flow_name = 'aws-bot'
const rag_prompt_flow_name = 'rag-prompt-flow'
const knowledge_base_name = 'aws-rag'
const claude3_5_sonnet = [
{
"bedrock_region": "us-west-2", // Oregon
"model_type": "claude3.5",
"max_tokens": 4096,
"model_id": "anthropic.claude-3-5-sonnet-20240620-v1:0"
},
{
"bedrock_region": "us-east-1", // N.Virginia
"model_type": "claude3.5",
"max_tokens": 4096,
"model_id": "anthropic.claude-3-5-sonnet-20240620-v1:0"
},
{
"bedrock_region": "eu-central-1", // Frankfurt
"model_type": "claude3.5",
"max_tokens": 4096,
"model_id": "anthropic.claude-3-5-sonnet-20240620-v1:0"
},
{
"bedrock_region": "ap-northeast-1", // Tokyo
"model_type": "claude3.5",
"max_tokens": 4096,
"model_id": "anthropic.claude-3-5-sonnet-20240620-v1:0"
}
];
const claude3_sonnet = [
{
"bedrock_region": "us-west-2", // Oregon
"model_type": "claude3",
"model_id": "anthropic.claude-3-sonnet-20240229-v1:0"
},
{
"bedrock_region": "us-east-1", // N.Virginia
"model_type": "claude3",
"model_id": "anthropic.claude-3-sonnet-20240229-v1:0"
},
{
"bedrock_region": "ca-central-1", // Canada
"model_type": "claude3",
"model_id": "anthropic.claude-3-sonnet-20240229-v1:0"
},
{
"bedrock_region": "eu-west-2", // London
"model_type": "claude3",
"model_id": "anthropic.claude-3-sonnet-20240229-v1:0"
},
{
"bedrock_region": "sa-east-1", // Sao Paulo
"model_type": "claude3",
"model_id": "anthropic.claude-3-sonnet-20240229-v1:0"
}
];
const claude3_haiku = [
{
"bedrock_region": "us-west-2", // Oregon
"model_type": "claude3",
"model_id": "anthropic.claude-3-haiku-20240307-v1:0"
},
{
"bedrock_region": "us-east-1", // N.Virginia
"model_type": "claude3",
"model_id": "anthropic.claude-3-haiku-20240307-v1:0"
},
{
"bedrock_region": "ca-central-1", // Canada
"model_type": "claude3",
"model_id": "anthropic.claude-3-haiku-20240307-v1:0"
},
{
"bedrock_region": "eu-west-2", // London
"model_type": "claude3",
"model_id": "anthropic.claude-3-haiku-20240307-v1:0"
},
{
"bedrock_region": "sa-east-1", // Sao Paulo
"model_type": "claude3",
"model_id": "anthropic.claude-3-haiku-20240307-v1:0"
}
];
const titan_embedding_v1 = [ // dimension = 1536
{
"bedrock_region": "us-west-2", // Oregon
"model_type": "titan",
"model_id": "amazon.titan-embed-text-v1"
},
{
"bedrock_region": "us-east-1", // N.Virginia
"model_type": "titan",
"model_id": "amazon.titan-embed-text-v1"
}
];
const titan_embedding_v2 = [ // dimension = 1024
{
"bedrock_region": "us-west-2", // Oregon
"model_type": "titan",
"model_id": "amazon.titan-embed-text-v2:0"
},
{
"bedrock_region": "us-east-1", // N.Virginia
"model_type": "titan",
"model_id": "amazon.titan-embed-text-v2:0"
},
{
"bedrock_region": "ca-central-1", // Canada
"model_type": "titan",
"model_id": "amazon.titan-embed-text-v2:0"
},
{
"bedrock_region": "eu-west-2", // London
"model_type": "titan",
"model_id": "amazon.titan-embed-text-v2:0"
},
{
"bedrock_region": "sa-east-1", // Sao Paulo
"model_type": "titan",
"model_id": "amazon.titan-embed-text-v2:0"
}
];
const LLM_for_chat = claude3_sonnet;
const LLM_for_multimodal = claude3_sonnet;
const LLM_embedding = titan_embedding_v2;
export class CdkKoreanChatbotStack extends cdk.Stack {
constructor(scope: Construct, id: string, props?: cdk.StackProps) {
super(scope, id, props);
// s3
const s3Bucket = new s3.Bucket(this, `storage-${projectName}`,{
bucketName: bucketName,
blockPublicAccess: s3.BlockPublicAccess.BLOCK_ALL,
removalPolicy: cdk.RemovalPolicy.DESTROY,
autoDeleteObjects: true,
publicReadAccess: false,
versioned: false,
cors: [
{
allowedHeaders: ['*'],
allowedMethods: [
s3.HttpMethods.POST,
s3.HttpMethods.PUT,
],
allowedOrigins: ['*'],
},
],
});
if(debug) {
new cdk.CfnOutput(this, 'bucketName', {
value: s3Bucket.bucketName,
description: 'The nmae of bucket',
});
new cdk.CfnOutput(this, 's3Arn', {
value: s3Bucket.bucketArn,
description: 'The arn of s3',
});
new cdk.CfnOutput(this, 's3Path', {
value: 's3://'+s3Bucket.bucketName,
description: 'The path of s3',
});
}
// copy web application files into s3 bucket
//new s3Deploy.BucketDeployment(this, `upload-HTML-for-${projectName}`, {
// sources: [s3Deploy.Source.asset("../html/")],
// destinationBucket: s3Bucket,
//});
new s3Deploy.BucketDeployment(this, `upload-contents-for-${projectName}`, {
sources: [
s3Deploy.Source.asset("../contents/faq/")
],
destinationBucket: s3Bucket,
destinationKeyPrefix: 'faq/'
});
new cdk.CfnOutput(this, 'HtmlUpdateCommend', {
value: 'aws s3 cp ../html/ ' + 's3://' + s3Bucket.bucketName + '/ --recursive',
description: 'copy commend for web pages',
});
// cloudfront
const distribution = new cloudFront.Distribution(this, `cloudfront-for-${projectName}`, {
defaultBehavior: {
origin: new origins.S3Origin(s3Bucket),
allowedMethods: cloudFront.AllowedMethods.ALLOW_ALL,
cachePolicy: cloudFront.CachePolicy.CACHING_DISABLED,
viewerProtocolPolicy: cloudFront.ViewerProtocolPolicy.REDIRECT_TO_HTTPS,
},
priceClass: cloudFront.PriceClass.PRICE_CLASS_200,
});
new cdk.CfnOutput(this, `distributionDomainName-for-${projectName}`, {
value: distribution.domainName,
description: 'The domain name of the Distribution',
});
// DynamoDB for call log
const callLogTableName = `db-call-log-for-${projectName}`;
const callLogDataTable = new dynamodb.Table(this, `db-call-log-for-${projectName}`, {
tableName: callLogTableName,
partitionKey: { name: 'user_id', type: dynamodb.AttributeType.STRING },
sortKey: { name: 'request_time', type: dynamodb.AttributeType.STRING },
billingMode: dynamodb.BillingMode.PAY_PER_REQUEST,
removalPolicy: cdk.RemovalPolicy.DESTROY,
});
const callLogIndexName = `index-type-for-${projectName}`;
callLogDataTable.addGlobalSecondaryIndex({ // GSI
indexName: callLogIndexName,
partitionKey: { name: 'request_id', type: dynamodb.AttributeType.STRING },
});
// Lambda - chat (websocket)
const roleLambdaWebsocket = new iam.Role(this, `role-lambda-chat-ws-for-${projectName}`, {
roleName: `role-lambda-chat-ws-for-${projectName}-${region}`,
assumedBy: new iam.CompositePrincipal(
new iam.ServicePrincipal("lambda.amazonaws.com"),
new iam.ServicePrincipal("bedrock.amazonaws.com"),
new iam.ServicePrincipal("kendra.amazonaws.com")
)
});
roleLambdaWebsocket.addManagedPolicy({
managedPolicyArn: 'arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole',
});
const BedrockPolicy = new iam.PolicyStatement({ // policy statement for sagemaker
resources: ['*'],
actions: ['bedrock:*'],
});
roleLambdaWebsocket.attachInlinePolicy( // add bedrock policy
new iam.Policy(this, `bedrock-policy-lambda-chat-ws-for-${projectName}`, {
statements: [BedrockPolicy],
}),
);
const apiInvokePolicy = new iam.PolicyStatement({
// resources: ['arn:aws:execute-api:*:*:*'],
resources: ['*'],
actions: [
'execute-api:Invoke',
'execute-api:ManageConnections'
],
});
roleLambdaWebsocket.attachInlinePolicy(
new iam.Policy(this, `api-invoke-policy-for-${projectName}`, {
statements: [apiInvokePolicy],
}),
);
// Kendra
let kendraIndex = "";
const roleKendra = new iam.Role(this, `role-kendra-for-${projectName}`, {
roleName: `role-kendra-for-${projectName}-${region}`,
assumedBy: new iam.CompositePrincipal(
new iam.ServicePrincipal("kendra.amazonaws.com")
)
});
const cfnIndex = new kendra.CfnIndex(this, 'MyCfnIndex', {
edition: 'DEVELOPER_EDITION', // ENTERPRISE_EDITION,
name: `reg-kendra-${projectName}`,
roleArn: roleKendra.roleArn,
});
const kendraLogPolicy = new iam.PolicyStatement({
resources: ['*'],
actions: ["logs:*", "cloudwatch:GenerateQuery"],
});
roleKendra.attachInlinePolicy( // add kendra policy
new iam.Policy(this, `kendra-log-policy-for-${projectName}`, {
statements: [kendraLogPolicy],
}),
);
const kendraS3ReadPolicy = new iam.PolicyStatement({
resources: ['*'],
actions: ["s3:Get*","s3:List*","s3:Describe*"],
});
roleKendra.attachInlinePolicy( // add kendra policy
new iam.Policy(this, `kendra-s3-read-policy-for-${projectName}`, {
statements: [kendraS3ReadPolicy],
}),
);
new cdk.CfnOutput(this, `index-of-kendra-for-${projectName}`, {
value: cfnIndex.attrId,
description: 'The index of kendra',
});
const accountId = process.env.CDK_DEFAULT_ACCOUNT;
const kendraResourceArn = `arn:aws:kendra:${kendra_region}:${accountId}:index/${cfnIndex.attrId}`
if(debug) {
new cdk.CfnOutput(this, `resource-arn-of-kendra-for-${projectName}`, {
value: kendraResourceArn,
description: 'The arn of resource',
});
}
const kendraPolicy = new iam.PolicyStatement({
resources: [kendraResourceArn],
actions: ['kendra:*'],
});
roleKendra.attachInlinePolicy( // add kendra policy
new iam.Policy(this, `kendra-inline-policy-for-${projectName}`, {
statements: [kendraPolicy],
}),
);
kendraIndex = cfnIndex.attrId;
roleLambdaWebsocket.attachInlinePolicy(
new iam.Policy(this, `lambda-inline-policy-for-kendra-in-${projectName}`, {
statements: [kendraPolicy],
}),
);
const passRoleResourceArn = roleLambdaWebsocket.roleArn;
const passRolePolicy = new iam.PolicyStatement({
resources: [passRoleResourceArn],
actions: ['iam:PassRole'],
});
roleLambdaWebsocket.attachInlinePolicy( // add pass role policy
new iam.Policy(this, `pass-role-of-kendra-for-${projectName}`, {
statements: [passRolePolicy],
}),
);
// Poly Role
const PollyPolicy = new iam.PolicyStatement({
actions: ['polly:*'],
resources: ['*'],
});
roleLambdaWebsocket.attachInlinePolicy(
new iam.Policy(this, 'polly-policy', {
statements: [PollyPolicy],
}),
);
// data source
/* const cfnDataSource = new kendra.CfnDataSource(this, `s3-data-source-${projectName}`, {
description: 'S3 source',
indexId: kendraIndex,
name: 'data-source-for-upload-file',
type: 'S3',
// languageCode: 'ko',
roleArn: roleKendra.roleArn,
// schedule: 'schedule',
dataSourceConfiguration: {
s3Configuration: {
bucketName: s3Bucket.bucketName,
documentsMetadataConfiguration: {
s3Prefix: 'metadata',
},
inclusionPrefixes: ['documents'],
},
},
}); */
new cdk.CfnOutput(this, `create-S3-data-source-for-${projectName}`, {
value: 'aws kendra create-data-source --index-id '+kendraIndex+' --name data-source-for-upload-file --type S3 --role-arn '+roleLambdaWebsocket.roleArn+' --configuration \'{\"S3Configuration\":{\"BucketName\":\"'+s3Bucket.bucketName+'\", \"DocumentsMetadataConfiguration\": {\"S3Prefix\":\"metadata/\"},\"InclusionPrefixes\": [\"'+s3_prefix+'\"]}}\' --language-code ko --region '+kendra_region,
description: 'The commend to create data source using S3',
});
// opensearch
// Permission for OpenSearch
const domainName = projectName
const resourceArn = `arn:aws:es:${region}:${accountId}:domain/${domainName}/*`
if(debug) {
new cdk.CfnOutput(this, `resource-arn-for-${projectName}`, {
value: resourceArn,
description: 'The arn of resource',
});
}
const OpenSearchAccessPolicy = new iam.PolicyStatement({
resources: [resourceArn],
actions: ['es:*'],
effect: iam.Effect.ALLOW,
principals: [new iam.AnyPrincipal()],
});
const domain = new opensearch.Domain(this, 'Domain', {
version: opensearch.EngineVersion.OPENSEARCH_2_3,
domainName: domainName,
removalPolicy: cdk.RemovalPolicy.DESTROY,
enforceHttps: true,
fineGrainedAccessControl: {
masterUserName: opensearch_account,
// masterUserPassword: cdk.SecretValue.secretsManager('opensearch-private-key'),
masterUserPassword:cdk.SecretValue.unsafePlainText(opensearch_passwd)
},
capacity: {
masterNodes: 3,
masterNodeInstanceType: 'r6g.large.search',
// multiAzWithStandbyEnabled: false,
dataNodes: 3,
dataNodeInstanceType: 'r6g.large.search',
// warmNodes: 2,
// warmInstanceType: 'ultrawarm1.medium.search',
},
accessPolicies: [OpenSearchAccessPolicy],
ebs: {
volumeSize: 100,
volumeType: ec2.EbsDeviceVolumeType.GP3,
},
nodeToNodeEncryption: true,
encryptionAtRest: {
enabled: true,
},
zoneAwareness: {
enabled: true,
availabilityZoneCount: 3,
}
});
new cdk.CfnOutput(this, `Domain-of-OpenSearch-for-${projectName}`, {
value: domain.domainArn,
description: 'The arm of OpenSearch Domain',
});
new cdk.CfnOutput(this, `Endpoint-of-OpenSearch-for-${projectName}`, {
value: 'https://'+domain.domainEndpoint,
description: 'The endpoint of OpenSearch Domain',
});
opensearch_url = 'https://'+domain.domainEndpoint;
// api role
const role = new iam.Role(this, `api-role-for-${projectName}`, {
roleName: `api-role-for-${projectName}-${region}`,
assumedBy: new iam.ServicePrincipal("apigateway.amazonaws.com")
});
role.addToPolicy(new iam.PolicyStatement({
resources: ['*'],
actions: [
'lambda:InvokeFunction',
'cloudwatch:*'
]
}));
role.addManagedPolicy({
managedPolicyArn: 'arn:aws:iam::aws:policy/AWSLambdaExecute',
});
// API Gateway
const api = new apiGateway.RestApi(this, `api-chatbot-for-${projectName}`, {
description: 'API Gateway for chatbot',
endpointTypes: [apiGateway.EndpointType.REGIONAL],
binaryMediaTypes: ['application/pdf', 'text/plain', 'text/csv', 'application/vnd.ms-powerpoint', 'application/vnd.ms-excel', 'application/msword'],
deployOptions: {
stageName: stage,
// logging for debug
// loggingLevel: apiGateway.MethodLoggingLevel.INFO,
// dataTraceEnabled: true,
},
});
new cdk.CfnOutput(this, `WebUrl-for-${projectName}`, {
value: 'https://'+distribution.domainName+'/index.html',
description: 'The web url of request for chat',
});
// Lambda - Upload
const lambdaUpload = new lambda.Function(this, `lambda-upload-for-${projectName}`, {
runtime: lambda.Runtime.NODEJS_16_X,
functionName: `lambda-upload-for-${projectName}`,
code: lambda.Code.fromAsset("../lambda-upload"),
handler: "index.handler",
timeout: cdk.Duration.seconds(10),
environment: {
bucketName: s3Bucket.bucketName,
s3_prefix: s3_prefix
}
});
s3Bucket.grantReadWrite(lambdaUpload);
// POST method - upload
const resourceName = "upload";
const upload = api.root.addResource(resourceName);
upload.addMethod('POST', new apiGateway.LambdaIntegration(lambdaUpload, {
passthroughBehavior: apiGateway.PassthroughBehavior.WHEN_NO_TEMPLATES,
credentialsRole: role,
integrationResponses: [{
statusCode: '200',
}],
proxy:false,
}), {
methodResponses: [
{
statusCode: '200',
responseModels: {
'application/json': apiGateway.Model.EMPTY_MODEL,
},
}
]
});
if(debug) {
new cdk.CfnOutput(this, `ApiGatewayUrl-for-${projectName}`, {
value: api.url+'upload',
description: 'The url of API Gateway',
});
}
// cloudfront setting
distribution.addBehavior("/upload", new origins.RestApiOrigin(api), {
cachePolicy: cloudFront.CachePolicy.CACHING_DISABLED,
allowedMethods: cloudFront.AllowedMethods.ALLOW_ALL,
viewerProtocolPolicy: cloudFront.ViewerProtocolPolicy.REDIRECT_TO_HTTPS,
});
// Lambda - queryResult
const lambdaQueryResult = new lambda.Function(this, `lambda-query-for-${projectName}`, {
runtime: lambda.Runtime.NODEJS_16_X,
functionName: `lambda-query-for-${projectName}`,
code: lambda.Code.fromAsset("../lambda-query"),
handler: "index.handler",
timeout: cdk.Duration.seconds(60),
environment: {
tableName: callLogTableName,
indexName: callLogIndexName
}
});
callLogDataTable.grantReadWriteData(lambdaQueryResult); // permission for dynamo
// POST method - query
const query = api.root.addResource("query");
query.addMethod('POST', new apiGateway.LambdaIntegration(lambdaQueryResult, {
passthroughBehavior: apiGateway.PassthroughBehavior.WHEN_NO_TEMPLATES,
credentialsRole: role,
integrationResponses: [{
statusCode: '200',
}],
proxy:false,
}), {
methodResponses: [
{
statusCode: '200',
responseModels: {
'application/json': apiGateway.Model.EMPTY_MODEL,
},
}
]
});
// cloudfront setting for api gateway
distribution.addBehavior("/query", new origins.RestApiOrigin(api), {
cachePolicy: cloudFront.CachePolicy.CACHING_DISABLED,
allowedMethods: cloudFront.AllowedMethods.ALLOW_ALL,
viewerProtocolPolicy: cloudFront.ViewerProtocolPolicy.REDIRECT_TO_HTTPS,
});
// Lambda - getHistory
const lambdaGetHistory = new lambda.Function(this, `lambda-gethistory-for-${projectName}`, {
runtime: lambda.Runtime.NODEJS_16_X,
functionName: `lambda-gethistory-for-${projectName}`,
code: lambda.Code.fromAsset("../lambda-gethistory"),
handler: "index.handler",
timeout: cdk.Duration.seconds(60),
environment: {
tableName: callLogTableName
}
});
callLogDataTable.grantReadWriteData(lambdaGetHistory); // permission for dynamo
// POST method - history
const history = api.root.addResource("history");
history.addMethod('POST', new apiGateway.LambdaIntegration(lambdaGetHistory, {
passthroughBehavior: apiGateway.PassthroughBehavior.WHEN_NO_TEMPLATES,
credentialsRole: role,
integrationResponses: [{
statusCode: '200',
}],
proxy:false,
}), {
methodResponses: [
{
statusCode: '200',
responseModels: {
'application/json': apiGateway.Model.EMPTY_MODEL,
},
}
]
});
// cloudfront setting for api gateway
distribution.addBehavior("/history", new origins.RestApiOrigin(api), {
cachePolicy: cloudFront.CachePolicy.CACHING_DISABLED,
allowedMethods: cloudFront.AllowedMethods.ALLOW_ALL,
viewerProtocolPolicy: cloudFront.ViewerProtocolPolicy.REDIRECT_TO_HTTPS,
});
// Lambda - deleteItems
const lambdaDeleteItems = new lambda.Function(this, `lambda-deleteItems-for-${projectName}`, {
runtime: lambda.Runtime.NODEJS_16_X,
functionName: `lambda-deleteItems-for-${projectName}`,
code: lambda.Code.fromAsset("../lambda-delete-items"),
handler: "index.handler",
timeout: cdk.Duration.seconds(60),
environment: {
tableName: callLogTableName
}
});
callLogDataTable.grantReadWriteData(lambdaDeleteItems); // permission for dynamo
// POST method - delete items
const deleteItem = api.root.addResource("delete");
deleteItem.addMethod('POST', new apiGateway.LambdaIntegration(lambdaDeleteItems, {
passthroughBehavior: apiGateway.PassthroughBehavior.WHEN_NO_TEMPLATES,
credentialsRole: role,
integrationResponses: [{
statusCode: '200',
}],
proxy:false,
}), {
methodResponses: [
{
statusCode: '200',
responseModels: {
'application/json': apiGateway.Model.EMPTY_MODEL,
},
}
]
});
// cloudfront setting for api gateway
distribution.addBehavior("/delete", new origins.RestApiOrigin(api), {
cachePolicy: cloudFront.CachePolicy.CACHING_DISABLED,
allowedMethods: cloudFront.AllowedMethods.ALLOW_ALL,
viewerProtocolPolicy: cloudFront.ViewerProtocolPolicy.REDIRECT_TO_HTTPS,
});
// stream api gateway
// API Gateway
const websocketapi = new apigatewayv2.CfnApi(this, `ws-api-for-${projectName}`, {
description: 'API Gateway for chatbot using websocket',
apiKeySelectionExpression: "$request.header.x-api-key",
name: 'api-'+projectName,
protocolType: "WEBSOCKET", // WEBSOCKET or HTTP
routeSelectionExpression: "$request.body.action",
});
websocketapi.applyRemovalPolicy(cdk.RemovalPolicy.DESTROY); // DESTROY, RETAIN
const wss_url = `wss://${websocketapi.attrApiId}.execute-api.${region}.amazonaws.com/${stage}`;
new cdk.CfnOutput(this, 'web-socket-url', {
value: wss_url,
description: 'The URL of Web Socket',
});
const connection_url = `https://${websocketapi.attrApiId}.execute-api.${region}.amazonaws.com/${stage}`;
if(debug) {
new cdk.CfnOutput(this, 'api-identifier', {
value: websocketapi.attrApiId,
description: 'The API identifier.',
});
new cdk.CfnOutput(this, 'connection-url', {
value: connection_url,
description: 'The URL of connection',
});
}
const googleApiSecret = new secretsmanager.Secret(this, `google-api-secret-for-${projectName}`, {
description: 'secret for google api key',
removalPolicy: cdk.RemovalPolicy.DESTROY,
secretName: `googl_api_key-${projectName}`,
generateSecretString: {
secretStringTemplate: JSON.stringify({
google_cse_id: 'cse_id'
}),
generateStringKey: 'google_api_key',
excludeCharacters: '/@"',
},
});
googleApiSecret.grantRead(roleLambdaWebsocket)
const weatherApiSecret = new secretsmanager.Secret(this, `weather-api-secret-for-${projectName}`, {
description: 'secret for weather api key', // openweathermap
removalPolicy: cdk.RemovalPolicy.DESTROY,
secretName: `openweathermap-${projectName}`,
secretObjectValue: {
project_name: cdk.SecretValue.unsafePlainText(projectName),
weather_api_key: cdk.SecretValue.unsafePlainText(''),
},
});
weatherApiSecret.grantRead(roleLambdaWebsocket)
const langsmithApiSecret = new secretsmanager.Secret(this, `weather-langsmith-secret-for-${projectName}`, {
description: 'secret for lamgsmith api key', // openweathermap
removalPolicy: cdk.RemovalPolicy.DESTROY,
secretName: `langsmithapikey-${projectName}`,
secretObjectValue: {
langchain_project: cdk.SecretValue.unsafePlainText(projectName),
langsmith_api_key: cdk.SecretValue.unsafePlainText(''),
},
});
langsmithApiSecret.grantRead(roleLambdaWebsocket)
const tavilyApiSecret = new secretsmanager.Secret(this, `weather-tavily-secret-for-${projectName}`, {
description: 'secret for lamgsmith api key', // openweathermap
removalPolicy: cdk.RemovalPolicy.DESTROY,
secretName: `tavilyapikey-${projectName}`,
secretObjectValue: {
project_name: cdk.SecretValue.unsafePlainText(projectName),
tavily_api_key: cdk.SecretValue.unsafePlainText(''),
},
});
tavilyApiSecret.grantRead(roleLambdaWebsocket)
// lambda-chat using websocket
const lambdaChatWebsocket = new lambda.DockerImageFunction(this, `lambda-chat-ws-for-${projectName}`, {
description: 'lambda for chat using websocket',
functionName: `lambda-chat-ws-for-${projectName}`,
code: lambda.DockerImageCode.fromImageAsset(path.join(__dirname, '../../lambda-chat-ws')),
timeout: cdk.Duration.seconds(600),
memorySize: 2048,
role: roleLambdaWebsocket,
environment: {
// bedrock_region: bedrock_region,
kendra_region: String(kendra_region),
// model_id: model_id,
s3_bucket: s3Bucket.bucketName,
s3_prefix: s3_prefix,
callLogTableName: callLogTableName,
connection_url: connection_url,
enableReference: enableReference,
opensearch_account: opensearch_account,
opensearch_passwd: opensearch_passwd,
opensearch_url: opensearch_url,
path: 'https://'+distribution.domainName+'/',
kendraIndex: kendraIndex,
roleArn: roleLambdaWebsocket.roleArn,
debugMessageMode: debugMessageMode,
rag_method: rag_method,
useParallelRAG: useParallelRAG,
numberOfRelevantDocs: numberOfRelevantDocs,
kendraMethod: kendraMethod,
LLM_for_chat:JSON.stringify(LLM_for_chat),
LLM_for_multimodal:JSON.stringify(LLM_for_multimodal),
LLM_embedding: JSON.stringify(titan_embedding_v2),
priority_search_embedding: JSON.stringify(titan_embedding_v1),
capabilities: capabilities,
googleApiSecret: googleApiSecret.secretName,
allowDualSearch: allowDualSearch,
enableHybridSearch: enableHybridSearch,
projectName: projectName,
separated_chat_history: separated_chat_history,
enalbeParentDocumentRetrival: enalbeParentDocumentRetrival,
speech_generation: speech_generation,
prompt_flow_name: prompt_flow_name,
rag_prompt_flow_name: rag_prompt_flow_name,
knowledge_base_name: knowledge_base_name
}
});
lambdaChatWebsocket.grantInvoke(new iam.ServicePrincipal('apigateway.amazonaws.com'));
s3Bucket.grantReadWrite(lambdaChatWebsocket); // permission for s3
callLogDataTable.grantReadWriteData(lambdaChatWebsocket); // permission for dynamo
if(debug) {
new cdk.CfnOutput(this, 'function-chat-ws-arn', {
value: lambdaChatWebsocket.functionArn,
description: 'The arn of lambda webchat.',
});
}
const integrationUri = `arn:aws:apigateway:${region}:lambda:path/2015-03-31/functions/${lambdaChatWebsocket.functionArn}/invocations`;
const cfnIntegration = new apigatewayv2.CfnIntegration(this, `api-integration-for-${projectName}`, {
apiId: websocketapi.attrApiId,
integrationType: 'AWS_PROXY',
credentialsArn: role.roleArn,
connectionType: 'INTERNET',
description: 'Integration for connect',
integrationUri: integrationUri,
});
new apigatewayv2.CfnRoute(this, `api-route-for-${projectName}-connect`, {
apiId: websocketapi.attrApiId,
routeKey: "$connect",
apiKeyRequired: false,
authorizationType: "NONE",
operationName: 'connect',
target: `integrations/${cfnIntegration.ref}`,
});
new apigatewayv2.CfnRoute(this, `api-route-for-${projectName}-disconnect`, {
apiId: websocketapi.attrApiId,
routeKey: "$disconnect",
apiKeyRequired: false,
authorizationType: "NONE",
operationName: 'disconnect',
target: `integrations/${cfnIntegration.ref}`,
});
new apigatewayv2.CfnRoute(this, `api-route-for-${projectName}-default`, {
apiId: websocketapi.attrApiId,
routeKey: "$default",
apiKeyRequired: false,
authorizationType: "NONE",
operationName: 'default',
target: `integrations/${cfnIntegration.ref}`,
});
new apigatewayv2.CfnStage(this, `api-stage-for-${projectName}`, {
apiId: websocketapi.attrApiId,
stageName: stage
});
new cdk.CfnOutput(this, `FAQ-Update-for-${projectName}`, {
value: 'aws kendra create-faq --index-id '+kendraIndex+' --name faq-banking --s3-path \'{\"Bucket\":\"'+s3Bucket.bucketName+'\", \"Key\":\"faq/faq-banking.csv\"}\' --role-arn '+roleLambdaWebsocket.roleArn+' --language-code ko --region '+kendra_region+' --file-format CSV',
description: 'The commend for uploading contents of FAQ',
});
// S3 - Lambda(S3 event) - SQS(Satandard) - Lambda(S3 event manager) - SQS(fifo) - Lambda(document)
/*
// SQS for S3 event
const queueS3event = new sqs.Queue(this, `queue-s3-event-for-${projectName}`, {
visibilityTimeout: cdk.Duration.seconds(600),
//queueName: `queue-s3-event-for-${projectName}.fifo`, # fifo
//fifo: true,
//contentBasedDeduplication: false,
queueName: `queue-s3-event-for-${projectName}`,
deliveryDelay: cdk.Duration.millis(0),
retentionPeriod: cdk.Duration.days(2),
});
// Lambda for s3 event
const lambdaS3event = new lambda.Function(this, `lambda-s3-event-for-${projectName}`, {
description: 'lambda for s3 event',
functionName: `lambda-s3-event-for-${projectName}`,
handler: 'lambda_function.lambda_handler',
runtime: lambda.Runtime.PYTHON_3_11,
code: lambda.Code.fromAsset(path.join(__dirname, '../../lambda-s3-event')),
timeout: cdk.Duration.seconds(120),
environment: {
queueS3event: queueS3event.queueUrl
}
});
queueS3event.grantSendMessages(lambdaS3event); // permision for SQS putItem
// SQS for S3 event (fifo)
let queueUrl:string[] = [];
let queue:any[] = [];
for(let i=0;i<LLM_for_chat.length;i++) {
queue[i] = new sqs.Queue(this, 'QueueS3EventFifo'+i, {
visibilityTimeout: cdk.Duration.seconds(600),
queueName: `queue-s3-event-for-${projectName}-${i}.fifo`,
fifo: true,
contentBasedDeduplication: false,
deliveryDelay: cdk.Duration.millis(0),
retentionPeriod: cdk.Duration.days(2),
});
queueUrl.push(queue[i].queueUrl);
}
// Lambda for s3 event manager
const lambdaS3eventManager = new lambda.Function(this, `lambda-s3-event-manager-for-${projectName}`, {
description: 'lambda for s3 event manager',
functionName: `lambda-s3-event-manager-for-${projectName}`,
handler: 'lambda_function.lambda_handler',
runtime: lambda.Runtime.PYTHON_3_11,
code: lambda.Code.fromAsset(path.join(__dirname, '../../lambda-s3-event-manager')),
timeout: cdk.Duration.seconds(60),
environment: {
sqsUrl: queueS3event.queueUrl,
sqsFifoUrl: JSON.stringify(queueUrl),
nqueue: String(LLM_for_chat.length)
}
});
lambdaS3eventManager.addEventSource(new SqsEventSource(queueS3event)); // permission for SQS
for(let i=0;i<LLM_for_chat.length;i++) {
queue[i].grantSendMessages(lambdaS3eventManager); // permision for SQS putItem
}
// Lambda for document manager
let lambdDocumentManager:any[] = [];
for(let i=0;i<LLM_for_chat.length;i++) {
lambdDocumentManager[i] = new lambda.DockerImageFunction(this, `lambda-document-manager-for-${projectName}-${i}`, {
description: 'S3 document manager',
functionName: `lambda-document-manager-for-${projectName}-${i}`,
role: roleLambdaWebsocket,
code: lambda.DockerImageCode.fromImageAsset(path.join(__dirname, '../../lambda-document-manager')),
timeout: cdk.Duration.seconds(600),
memorySize: 2048,
environment: {
bedrock_region: LLM_for_chat[i].bedrock_region,
s3_bucket: s3Bucket.bucketName,
s3_prefix: s3_prefix,
kendra_region: String(kendra_region),
opensearch_account: opensearch_account,
opensearch_passwd: opensearch_passwd,
opensearch_url: opensearch_url,
kendraIndex: kendraIndex,
roleArn: roleLambdaWebsocket.roleArn,
path: 'https://'+distribution.domainName+'/',
capabilities: capabilities,
sqsUrl: queueUrl[i],
max_object_size: String(max_object_size),
enableHybridSearch: enableHybridSearch,
supportedFormat: supportedFormat,
LLM_for_chat: JSON.stringify(LLM_for_chat),
enableParallelSummary: enableParallelSummary
}
});
s3Bucket.grantReadWrite(lambdDocumentManager[i]); // permission for s3
lambdDocumentManager[i].addEventSource(new SqsEventSource(queue[i])); // permission for SQS
}
// s3 event source
const s3PutEventSource = new lambdaEventSources.S3EventSource(s3Bucket, {
events: [
s3.EventType.OBJECT_CREATED_PUT,
s3.EventType.OBJECT_REMOVED_DELETE,
s3.EventType.OBJECT_CREATED_COMPLETE_MULTIPART_UPLOAD
],
filters: [
{ prefix: s3_prefix+'/' },
]
});
lambdaS3event.addEventSource(s3PutEventSource); */
// S3 - Lambda(S3 event) - SQS(fifo) - Lambda(document)
// DLQ
let dlq:any[] = [];
for(let i=0;i<LLM_embedding.length;i++) {
dlq[i] = new sqs.Queue(this, 'DlqS3EventFifo'+i, {
visibilityTimeout: cdk.Duration.seconds(600),
queueName: `dlq-s3-event-for-${projectName}-${i}.fifo`,
fifo: true,
contentBasedDeduplication: false,
deliveryDelay: cdk.Duration.millis(0),
retentionPeriod: cdk.Duration.days(14),
});
}
// SQS for S3 event (fifo)
let queueUrl:string[] = [];
let queue:any[] = [];
for(let i=0;i<LLM_embedding.length;i++) {
queue[i] = new sqs.Queue(this, 'QueueS3EventFifo'+i, {
visibilityTimeout: cdk.Duration.seconds(600),
queueName: `queue-s3-event-for-${projectName}-${i}.fifo`,
fifo: true,
contentBasedDeduplication: false,
deliveryDelay: cdk.Duration.millis(0),
retentionPeriod: cdk.Duration.days(2),
deadLetterQueue: {
maxReceiveCount: 4,
queue: dlq[i]
}
});
queueUrl.push(queue[i].queueUrl);
}