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import * as cdk from "aws-cdk-lib";
import { Construct } from "constructs";
import { SystemConfig, ModelInterface, Direction } from "./shared/types";
import { Authentication } from "./authentication";
import { Monitoring } from "./monitoring";
import { UserInterface } from "./user-interface";
import { Shared } from "./shared";
import { ChatBotApi } from "./chatbot-api";
import { RagEngines } from "./rag-engines";
import { Models } from "./models";
import { LangChainInterface } from "./model-interfaces/langchain";
import { IdeficsInterface } from "./model-interfaces/idefics";
import * as subscriptions from "aws-cdk-lib/aws-sns-subscriptions";
import * as sns from "aws-cdk-lib/aws-sns";
import * as iam from "aws-cdk-lib/aws-iam";
import * as cr from "aws-cdk-lib/custom-resources";
import { NagSuppressions } from "cdk-nag";
export interface AwsGenAILLMChatbotStackProps extends cdk.StackProps {
readonly config: SystemConfig;
}
export class AwsGenAILLMChatbotStack extends cdk.Stack {
constructor(
scope: Construct,
id: string,
props: AwsGenAILLMChatbotStackProps
) {
super(scope, id, {
description: "AWS LLM CHATBOT (uksb-1tupboc16)",
...props,
});
const shared = new Shared(this, "Shared", { config: props.config });
const authentication = new Authentication(
this,
"Authentication",
props.config
);
const models = new Models(this, "Models", {
config: props.config,
shared,
});
let ragEngines: RagEngines | undefined = undefined;
if (props.config.rag.enabled) {
ragEngines = new RagEngines(this, "RagEngines", {
shared,
config: props.config,
});
}
const chatBotApi = new ChatBotApi(this, "ChatBotApi", {
shared,
config: props.config,
ragEngines: ragEngines,
userPool: authentication.userPool,
modelsParameter: models.modelsParameter,
bedrockEnabledModelsParameter: models.bedrockEnabledModelsParameter,
models: models.models,
});
// Langchain Interface Construct
// This is the model interface receiving messages from the websocket interface via the message topic
// and interacting with the model via LangChain library
const langchainModels = models.models.filter(
(model) => model.interface === ModelInterface.LangChain
);
// check if any deployed model requires langchain interface or if bedrock is enabled from config
let langchainInterface: LangChainInterface | undefined;
if (langchainModels.length > 0 || props.config.bedrock?.enabled) {
langchainInterface = new LangChainInterface(this, "LangchainInterface", {
shared,
config: props.config,
ragEngines,
messagesTopic: chatBotApi.messagesTopic,
sessionsTable: chatBotApi.sessionsTable,
byUserIdIndex: chatBotApi.byUserIdIndex,
});
// Route all incoming messages targeted to langchain to the langchain model interface queue
chatBotApi.messagesTopic.addSubscription(
new subscriptions.SqsSubscription(langchainInterface.ingestionQueue, {
filterPolicyWithMessageBody: {
direction: sns.FilterOrPolicy.filter(
sns.SubscriptionFilter.stringFilter({
allowlist: [Direction.In],
})
),
modelInterface: sns.FilterOrPolicy.filter(
sns.SubscriptionFilter.stringFilter({
allowlist: [ModelInterface.LangChain],
})
),
},
})
);
for (const model of models.models) {
if (model.interface === ModelInterface.LangChain) {
langchainInterface.addSageMakerEndpoint(model);
}
}
}
// IDEFICS Interface Construct
// This is the model interface receiving messages from the websocket interface via the message topic
// and interacting with IDEFICS visual language models
models.models.filter(
(model) => model.interface === ModelInterface.MultiModal
);
// check if any deployed model requires idefics interface
const ideficsInterface = new IdeficsInterface(this, "IdeficsInterface", {
shared,
config: props.config,
messagesTopic: chatBotApi.messagesTopic,
sessionsTable: chatBotApi.sessionsTable,
byUserIdIndex: chatBotApi.byUserIdIndex,
chatbotFilesBucket: chatBotApi.filesBucket,
});
// Route all incoming messages targeted to idefics to the idefics model interface queue
chatBotApi.messagesTopic.addSubscription(
new subscriptions.SqsSubscription(ideficsInterface.ingestionQueue, {
filterPolicyWithMessageBody: {
direction: sns.FilterOrPolicy.filter(
sns.SubscriptionFilter.stringFilter({
allowlist: [Direction.In],
})
),
modelInterface: sns.FilterOrPolicy.filter(
sns.SubscriptionFilter.stringFilter({
allowlist: [ModelInterface.MultiModal],
})
),
},
})
);
for (const model of models.models) {
// if model name contains idefics then add to idefics interface
if (model.interface === ModelInterface.MultiModal) {
ideficsInterface.addSageMakerEndpoint(model);
}
}
const userInterface = new UserInterface(this, "UserInterface", {
shared,
config: props.config,
userPoolId: authentication.userPool.userPoolId,
userPoolClient: authentication.userPoolClient,
userPoolClientId: authentication.userPoolClient.userPoolClientId,
identityPool: authentication.identityPool,
api: chatBotApi,
chatbotFilesBucket: chatBotApi.filesBucket,
crossEncodersEnabled:
typeof ragEngines?.sageMakerRagModels?.model !== "undefined",
sagemakerEmbeddingsEnabled:
typeof ragEngines?.sageMakerRagModels?.model !== "undefined",
});
if (props.config.cognitoFederation?.enabled) {
const oAuthParams = {
scopes: [
"email",
"phone",
"profile",
"openid",
"aws.cognito.signin.user.admin",
],
customProviderName: props.config.cognitoFederation?.customProviderName,
customProviderType: props.config.cognitoFederation?.customProviderType,
callbackUrls: [`https://${userInterface.publishedDomain}`],
logoutUrls: [`https://${userInterface.publishedDomain}`],
};
const lambdaInvokePolicyStatement = new iam.PolicyStatement({
actions: ["lambda:InvokeFunction"],
resources: [authentication.updateUserPoolClient.functionArn],
});
// Create a Custom Resource to trigger the Lambda function
const customResource = new cr.AwsCustomResource(
this,
"UpdateUserPoolClientCustomResource",
{
onUpdate: {
service: "Lambda",
action: "invoke",
parameters: {
FunctionName: authentication.updateUserPoolClient.functionName,
Payload: JSON.stringify({
oAuthV: oAuthParams,
}),
},
physicalResourceId: cr.PhysicalResourceId.of(
authentication.userPoolClient.userPoolClientId
),
},
policy: cr.AwsCustomResourcePolicy.fromStatements([
lambdaInvokePolicyStatement,
]),
}
);
// Ensure the custom resource is created after the UserPoolClient and userInterface and federated provider setup
customResource.node.addDependency(authentication.updateUserPoolClient);
customResource.node.addDependency(userInterface);
if (props.config.cognitoFederation?.customProviderType == "OIDC") {
customResource.node.addDependency(authentication.customOidcProvider);
}
if (props.config.cognitoFederation?.customProviderType == "SAML") {
customResource.node.addDependency(authentication.customSamlProvider);
}
}
const monitoringStack = new cdk.NestedStack(this, "MonitoringStack");
new Monitoring(monitoringStack, "Monitoring", {
appsycnApi: chatBotApi.graphqlApi,
cognito: {
userPoolId: authentication.userPool.userPoolId,
clientId: authentication.userPoolClient.userPoolClientId,
},
tables: [
chatBotApi.sessionsTable,
...(ragEngines
? [ragEngines.workspacesTable, ragEngines.documentsTable]
: []),
],
sqs: [
chatBotApi.outBoundQueue,
ideficsInterface.ingestionQueue,
...(langchainInterface ? [langchainInterface.ingestionQueue] : []),
],
aurora: ragEngines?.auroraPgVector?.database,
opensearch: ragEngines?.openSearchVector?.openSearchCollection,
kendra: ragEngines?.kendraRetrieval?.kendraIndex,
buckets: [chatBotApi.filesBucket],
ragFunctionProcessing: [
...(ragEngines ? [ragEngines.dataImport.rssIngestorFunction] : []),
],
ragStateMachineProcessing: [
...(ragEngines
? [
ragEngines.dataImport.fileImportWorkflow,
ragEngines.dataImport.websiteCrawlingWorkflow,
ragEngines.deleteDocumentWorkflow,
ragEngines.deleteWorkspaceWorkflow,
]
: []),
],
});
/**
* CDK NAG suppression
*/
NagSuppressions.addResourceSuppressionsByPath(
this,
[
`/${this.stackName}/Custom::CDKBucketDeployment8693BB64968944B69AAFB0CC9EB8756C/Resource`,
],
[
{
id: "AwsSolutions-L1",
reason: "Lambda function created implicitly by CDK.",
},
]
);
NagSuppressions.addResourceSuppressionsByPath(
this,
[
`/${this.stackName}/Authentication/IdentityPool/AuthenticatedRole/DefaultPolicy/Resource`,
`/${this.stackName}/Authentication/UserPool/smsRole/Resource`,
`/${this.stackName}/Custom::CDKBucketDeployment8693BB64968944B69AAFB0CC9EB8756C/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/LogRetentionaae0aa3c5b4d4f87b02d85b201efdd8a/ServiceRole/Resource`,
`/${this.stackName}/LogRetentionaae0aa3c5b4d4f87b02d85b201efdd8a/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/LangchainInterface/RequestHandler/ServiceRole/Resource`,
`/${this.stackName}/LangchainInterface/RequestHandler/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/Custom::CDKBucketDeployment8693BB64968944B69AAFB0CC9EB8756C/ServiceRole/Resource`,
`/${this.stackName}/ChatBotApi/ChatbotApi/proxyResolverFunction/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/ChatBotApi/ChatbotApi/realtimeResolverFunction/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/ChatBotApi/RestApi/GraphQLApiHandler/ServiceRole/Resource`,
`/${this.stackName}/ChatBotApi/RestApi/GraphQLApiHandler/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/ChatBotApi/Realtime/Resolvers/lambda-resolver/ServiceRole/Resource`,
`/${this.stackName}/ChatBotApi/Realtime/Resolvers/outgoing-message-handler/ServiceRole/Resource`,
`/${this.stackName}/ChatBotApi/Realtime/Resolvers/outgoing-message-handler/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/IdeficsInterface/IdeficsInterfaceRequestHandler/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/IdeficsInterface/IdeficsInterfaceRequestHandler/ServiceRole/Resource`,
`/${this.stackName}/IdeficsInterface/ChatbotFilesPrivateApi/CloudWatchRole/Resource`,
`/${this.stackName}/IdeficsInterface/S3IntegrationRole/DefaultPolicy/Resource`,
],
[
{
id: "AwsSolutions-IAM4",
reason: "IAM role implicitly created by CDK.",
},
{
id: "AwsSolutions-IAM5",
reason: "IAM role implicitly created by CDK.",
},
]
);
NagSuppressions.addResourceSuppressionsByPath(
this,
`/${this.stackName}/IdeficsInterface/ChatbotFilesPrivateApi/DeploymentStage.prod/Resource`,
[
{
id: "AwsSolutions-APIG3",
reason: "WAF not required due to configured Cognito auth.",
},
]
);
NagSuppressions.addResourceSuppressionsByPath(
this,
[
`/${this.stackName}/IdeficsInterface/ChatbotFilesPrivateApi/Default/{object}/ANY/Resource`,
`/${this.stackName}/IdeficsInterface/ChatbotFilesPrivateApi/Default/{object}/ANY/Resource`,
],
[
{ id: "AwsSolutions-APIG4", reason: "Private API within a VPC." },
{ id: "AwsSolutions-COG4", reason: "Private API within a VPC." },
]
);
// RAG configuration
if (props.config.rag.enabled) {
NagSuppressions.addResourceSuppressionsByPath(
this,
[
`/${this.stackName}/RagEngines/DataImport/FileImportBatchJob/FileImportJobRole/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/DataImport/WebCrawlerBatchJob/WebCrawlerJobRole/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/DataImport/FileImportBatchJob/FileImportContainer/ExecutionRole/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/DataImport/WebCrawlerBatchJob/WebCrawlerContainer/ExecutionRole/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/DataImport/FileImportWorkflow/FileImportStateMachine/Role/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/DataImport/WebsiteCrawlingWorkflow/WebsiteCrawling/Role/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/DataImport/UploadHandler/ServiceRole/Resource`,
`/${this.stackName}/RagEngines/DataImport/UploadHandler/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/Workspaces/DeleteWorkspace/DeleteWorkspaceFunction/ServiceRole/Resource`,
`/${this.stackName}/RagEngines/Workspaces/DeleteWorkspace/DeleteWorkspaceFunction/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/Workspaces/DeleteWorkspace/DeleteWorkspace/Role/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/Workspaces/DeleteDocument/DeleteDocumentFunction/ServiceRole/Resource`,
`/${this.stackName}/RagEngines/Workspaces/DeleteDocument/DeleteDocumentFunction/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/Workspaces/DeleteDocument/DeleteDocument/Role/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/DataImport/FileImportBatchJob/ManagedEc2EcsComputeEnvironment/InstanceProfileRole/Resource`,
`/${this.stackName}/RagEngines/DataImport/WebCrawlerBatchJob/WebCrawlerManagedEc2EcsComputeEnvironment/InstanceProfileRole/Resource`,
`/${this.stackName}/BucketNotificationsHandler050a0587b7544547bf325f094a3db834/Role/Resource`,
`/${this.stackName}/BucketNotificationsHandler050a0587b7544547bf325f094a3db834/Role/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/DataImport/RssSubscription/RssIngestor/ServiceRole/Resource`,
`/${this.stackName}/RagEngines/DataImport/RssSubscription/RssIngestor/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/DataImport/RssSubscription/triggerRssIngestorsFunction/ServiceRole/Resource`,
`/${this.stackName}/RagEngines/DataImport/RssSubscription/triggerRssIngestorsFunction/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/DataImport/RssSubscription/crawlQueuedRssPostsFunction/ServiceRole/Resource`,
`/${this.stackName}/RagEngines/DataImport/RssSubscription/crawlQueuedRssPostsFunction/ServiceRole/DefaultPolicy/Resource`,
],
[
{
id: "AwsSolutions-IAM4",
reason: "IAM role implicitly created by CDK.",
},
{
id: "AwsSolutions-IAM5",
reason: "IAM role implicitly created by CDK.",
},
]
);
if (
props.config.rag.engines.aurora.enabled ||
props.config.rag.engines.opensearch.enabled
) {
NagSuppressions.addResourceSuppressionsByPath(
this,
[
`/${this.stackName}/RagEngines/SageMaker/Model/MultiAB24A/CodeBuildRole/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/SageMaker/Model/MultiAB24A/OnEventHandler/ServiceRole/Resource`,
`/${this.stackName}/RagEngines/SageMaker/Model/MultiAB24A/IsCompleteHandler/ServiceRole/Resource`,
`/${this.stackName}/RagEngines/SageMaker/Model/MultiAB24A/Provider/framework-onEvent/ServiceRole/Resource`,
`/${this.stackName}/RagEngines/SageMaker/Model/MultiAB24A/Provider/framework-onEvent/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/SageMaker/Model/MultiAB24A/Provider/framework-isComplete/ServiceRole/Resource`,
`/${this.stackName}/RagEngines/SageMaker/Model/MultiAB24A/Provider/framework-isComplete/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/SageMaker/Model/MultiAB24A/Provider/framework-onTimeout/ServiceRole/Resource`,
`/${this.stackName}/RagEngines/SageMaker/Model/MultiAB24A/Provider/framework-onTimeout/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/SageMaker/Model/MultiAB24A/Provider/waiter-state-machine/Role/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/SageMaker/Model/MultiAB24A/Provider/waiter-state-machine/Resource`,
`/${this.stackName}/RagEngines/SageMaker/Model/MultiAB24A/SageMakerExecutionRole/DefaultPolicy/Resource`,
],
[
{
id: "AwsSolutions-SF1",
reason: "SFN implicitly created by CDK.",
},
{
id: "AwsSolutions-SF2",
reason: "SFN implicitly created by CDK.",
},
{
id: "AwsSolutions-IAM4",
reason: "IAM role implicitly created by CDK.",
},
{
id: "AwsSolutions-IAM5",
reason: "IAM role implicitly created by CDK.",
},
]
);
if (props.config.rag.engines.aurora.enabled) {
NagSuppressions.addResourceSuppressionsByPath(
this,
`/${this.stackName}/RagEngines/AuroraPgVector/AuroraDatabase/Secret/Resource`,
[
{
id: "AwsSolutions-SMG4",
reason: "Secret created implicitly by CDK.",
},
]
);
NagSuppressions.addResourceSuppressionsByPath(
this,
[
`/${this.stackName}/RagEngines/AuroraPgVector/DatabaseSetupFunction/ServiceRole/Resource`,
`/${this.stackName}/RagEngines/AuroraPgVector/DatabaseSetupProvider/framework-onEvent/ServiceRole/Resource`,
`/${this.stackName}/RagEngines/AuroraPgVector/DatabaseSetupProvider/framework-onEvent/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/AuroraPgVector/CreateAuroraWorkspace/CreateAuroraWorkspaceFunction/ServiceRole/Resource`,
`/${this.stackName}/RagEngines/AuroraPgVector/CreateAuroraWorkspace/CreateAuroraWorkspaceFunction/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/AuroraPgVector/CreateAuroraWorkspace/CreateAuroraWorkspace/Role/DefaultPolicy/Resource`,
],
[
{
id: "AwsSolutions-IAM4",
reason: "IAM role implicitly created by CDK.",
},
{
id: "AwsSolutions-IAM5",
reason: "IAM role implicitly created by CDK.",
},
]
);
}
if (props.config.rag.engines.opensearch.enabled) {
NagSuppressions.addResourceSuppressionsByPath(
this,
[
`/${this.stackName}/RagEngines/OpenSearchVector/CreateOpenSearchWorkspace/CreateOpenSearchWorkspaceFunction/ServiceRole/Resource`,
`/${this.stackName}/RagEngines/OpenSearchVector/CreateOpenSearchWorkspace/CreateOpenSearchWorkspaceFunction/ServiceRole/DefaultPolicy/Resource`,
`/${this.stackName}/RagEngines/OpenSearchVector/CreateOpenSearchWorkspace/CreateOpenSearchWorkspace/Role/DefaultPolicy/Resource`,
],
[
{
id: "AwsSolutions-IAM4",
reason: "IAM role implicitly created by CDK.",
},
{
id: "AwsSolutions-IAM5",
reason: "IAM role implicitly created by CDK.",
},
]
);
}
}
if (props.config.rag.engines.kendra.enabled) {
NagSuppressions.addResourceSuppressionsByPath(
this,
[
`/${this.stackName}/RagEngines/KendraRetrieval/CreateKendraWorkspace/CreateKendraWorkspace/Role/DefaultPolicy/Resource`,
],
[
{
id: "AwsSolutions-IAM4",
reason: "IAM role implicitly created by CDK.",
},
{
id: "AwsSolutions-IAM5",
reason: "IAM role implicitly created by CDK.",
},
]
);
if (props.config.rag.engines.kendra.createIndex) {
NagSuppressions.addResourceSuppressionsByPath(
this,
[
`/${this.stackName}/RagEngines/KendraRetrieval/KendraRole/DefaultPolicy/Resource`,
],
[
{
id: "AwsSolutions-IAM5",
reason:
"Access to all log groups required for CloudWatch log group creation.",
},
]
);
}
}
}
// Implicitly created resources with changing paths
NagSuppressions.addStackSuppressions(this, [
{
id: "CdkNagValidationFailure",
reason: "Intrinstic function references.",
},
]);
// Lambda functions still using Python 3.11 even though latest runtime is 3.12. Can be removed after upgrade.
NagSuppressions.addStackSuppressions(this, [
{
id: "AwsSolutions-L1",
reason: "Not yet upgraded from Python 3.11 to 3.12.",
},
]);
if (props.config.privateWebsite) {
const paths = [];
for (
let index = 0;
index < shared.vpc.availabilityZones.length;
index++
) {
paths.push(
`/${this.stackName}/UserInterface/PrivateWebsite/DescribeNetworkInterfaces-${index}/CustomResourcePolicy/Resource`
);
}
paths.push(
`/${this.stackName}/UserInterface/PrivateWebsite/describeVpcEndpoints/CustomResourcePolicy/Resource`
);
NagSuppressions.addResourceSuppressionsByPath(this, paths, [
{
id: "AwsSolutions-IAM5",
reason:
"Custom Resource requires permissions to Describe VPC Endpoint Network Interfaces",
},
]);
NagSuppressions.addResourceSuppressionsByPath(
this,
[
`/${this.stackName}/AWS679f53fac002430cb0da5b7982bd2287/ServiceRole/Resource`,
],
[
{
id: "AwsSolutions-IAM4",
reason: "IAM role implicitly created by CDK.",
},
]
);
}
if (props.config.cognitoFederation?.enabled) {
NagSuppressions.addResourceSuppressionsByPath(
this,
[
`/${this.stackName}/AWS679f53fac002430cb0da5b7982bd2287/ServiceRole/Resource`,
],
[
{
id: "AwsSolutions-IAM4",
reason: "IAM role implicitly created by CDK.",
},
]
);
}
}
}