Expose timeout property. (#2358)

Author: Kamil Sobol

.changeset/few-oranges-tell.md

@@ -0,0 +1,6 @@
+---
+'@aws-amplify/ai-constructs': minor
+'@aws-amplify/backend-ai': minor
+---
+
+Expose timeout property

packages/ai-constructs/API.md

@@ -57,6 +57,7 @@ type ConversationHandlerFunctionProps = {
         region?: string;
     }>;
     memoryMB?: number;
+    timeoutSeconds?: number;
     logging?: {
         level?: ApplicationLogLevel;
         retention?: RetentionDays;

packages/ai-constructs/src/conversation/conversation_handler_construct.test.ts

@@ -287,6 +287,68 @@ void describe('Conversation Handler Function construct', () => {
     });
   });
 
+  void describe('timeout property', () => {
+    void it('sets valid timeout', () => {
+      const app = new App();
+      const stack = new Stack(app);
+      new ConversationHandlerFunction(stack, 'conversationHandler', {
+        models: [],
+        timeoutSeconds: 124,
+      });
+      const template = Template.fromStack(stack);
+
+      template.hasResourceProperties('AWS::Lambda::Function', {
+        Timeout: 124,
+      });
+    });
+
+    void it('sets default timeout', () => {
+      const app = new App();
+      const stack = new Stack(app);
+      new ConversationHandlerFunction(stack, 'conversationHandler', {
+        models: [],
+      });
+      const template = Template.fromStack(stack);
+
+      template.hasResourceProperties('AWS::Lambda::Function', {
+        Timeout: 60,
+      });
+    });
+
+    void it('throws on timeout below 1', () => {
+      assert.throws(() => {
+        const app = new App();
+        const stack = new Stack(app);
+        new ConversationHandlerFunction(stack, 'conversationHandler', {
+          models: [],
+          timeoutSeconds: 0,
+        });
+      }, new Error('timeoutSeconds must be a whole number between 1 and 900 inclusive'));
+    });
+
+    void it('throws on timeout above 15 minutes', () => {
+      assert.throws(() => {
+        const app = new App();
+        const stack = new Stack(app);
+        new ConversationHandlerFunction(stack, 'conversationHandler', {
+          models: [],
+          timeoutSeconds: 60 * 15 + 1,
+        });
+      }, new Error('timeoutSeconds must be a whole number between 1 and 900 inclusive'));
+    });
+
+    void it('throws on fractional memory', () => {
+      assert.throws(() => {
+        const app = new App();
+        const stack = new Stack(app);
+        new ConversationHandlerFunction(stack, 'conversationHandler', {
+          models: [],
+          memoryMB: 256.2,
+        });
+      }, new Error('memoryMB must be a whole number between 128 and 10240 inclusive'));
+    });
+  });
+
   void describe('logging options', () => {
     void it('sets log level', () => {
       const app = new App();

packages/ai-constructs/src/conversation/conversation_handler_construct.ts

@@ -42,6 +42,13 @@ export type ConversationHandlerFunctionProps = {
    */
   memoryMB?: number;
 
+  /**
+   * An amount of time in seconds between 1 second and 15 minutes.
+   * Must be a whole number.
+   * Default is 60 seconds.
+   */
+  timeoutSeconds?: number;
+
   logging?: {
     level?: ApplicationLogLevel;
     retention?: RetentionDays;
@@ -96,7 +103,7 @@ export class ConversationHandlerFunction
       `conversationHandlerFunction`,
       {
         runtime: LambdaRuntime.NODEJS_18_X,
-        timeout: Duration.seconds(60),
+        timeout: Duration.seconds(this.resolveTimeout()),
         entry: this.props.entry ?? defaultHandlerFilePath,
         handler: 'handler',
         memorySize: this.resolveMemory(),
@@ -185,6 +192,28 @@ export class ConversationHandlerFunction
     }
     return this.props.memoryMB;
   };
+
+  private resolveTimeout = () => {
+    const timeoutMin = 1;
+    const timeoutMax = 60 * 15; // 15 minutes in seconds
+    const timeoutDefault = 60;
+    if (this.props.timeoutSeconds === undefined) {
+      return timeoutDefault;
+    }
+
+    if (
+      !isWholeNumberBetweenInclusive(
+        this.props.timeoutSeconds,
+        timeoutMin,
+        timeoutMax
+      )
+    ) {
+      throw new Error(
+        `timeoutSeconds must be a whole number between ${timeoutMin} and ${timeoutMax} inclusive`
+      );
+    }
+    return this.props.timeoutSeconds;
+  };
 }
 
 const isWholeNumberBetweenInclusive = (

packages/backend-ai/API.md

@@ -71,6 +71,7 @@ type DefineConversationHandlerFunctionProps = {
         region?: string;
     }>;
     memoryMB?: number;
+    timeoutSeconds?: number;
     logging?: ConversationHandlerFunctionLoggingOptions;
 };
 

packages/backend-ai/src/conversation/factory.test.ts

@@ -16,6 +16,7 @@ import { customEntryHandler } from './test-assets/with-custom-entry/resource.js'
 import { Template } from 'aws-cdk-lib/assertions';
 import { defineConversationHandlerFunction } from './factory.js';
 import { ConversationHandlerFunction } from '@aws-amplify/ai-constructs/conversation';
+import { AmplifyError } from '@aws-amplify/platform-core';
 
 const createStackAndSetContext = (): Stack => {
   const app = new App();
@@ -204,6 +205,55 @@ void describe('ConversationHandlerFactory', () => {
     });
   });
 
+  void it('maps invalid memory error', () => {
+    const factory = defineConversationHandlerFunction({
+      entry: './test-assets/with-default-entry/handler.ts',
+      name: 'testHandlerName',
+      models: [],
+      memoryMB: -1,
+    });
+    assert.throws(
+      () => factory.getInstance(getInstanceProps),
+      (error: Error) => {
+        assert.ok(AmplifyError.isAmplifyError(error));
+        assert.strictEqual(error.name, 'InvalidMemoryMBError');
+        return true;
+      }
+    );
+  });
+
+  void it('passes timeout setting to construct', () => {
+    const factory = defineConversationHandlerFunction({
+      entry: './test-assets/with-default-entry/handler.ts',
+      name: 'testHandlerName',
+      models: [],
+      timeoutSeconds: 124,
+    });
+    const lambda = factory.getInstance(getInstanceProps);
+    const template = Template.fromStack(Stack.of(lambda.resources.lambda));
+    template.resourceCountIs('AWS::Lambda::Function', 1);
+    template.hasResourceProperties('AWS::Lambda::Function', {
+      Timeout: 124,
+    });
+  });
+
+  void it('maps invalid timeout error', () => {
+    const factory = defineConversationHandlerFunction({
+      entry: './test-assets/with-default-entry/handler.ts',
+      name: 'testHandlerName',
+      models: [],
+      timeoutSeconds: -1,
+    });
+    assert.throws(
+      () => factory.getInstance(getInstanceProps),
+      (error: Error) => {
+        assert.ok(AmplifyError.isAmplifyError(error));
+        assert.strictEqual(error.name, 'InvalidTimeoutError');
+        return true;
+      }
+    );
+  });
+
   void it('passes log level to construct', () => {
     const factory = defineConversationHandlerFunction({
       entry: './test-assets/with-default-entry/handler.ts',

packages/backend-ai/src/conversation/factory.ts

@@ -17,7 +17,10 @@ import {
   ConversationTurnEventVersion,
 } from '@aws-amplify/ai-constructs/conversation';
 import path from 'path';
-import { CallerDirectoryExtractor } from '@aws-amplify/platform-core';
+import {
+  AmplifyUserError,
+  CallerDirectoryExtractor,
+} from '@aws-amplify/platform-core';
 import { AiModel } from '@aws-amplify/data-schema-types';
 import {
   LogLevelConverter,
@@ -52,6 +55,7 @@ class ConversationHandlerFunctionGenerator
       }),
       outputStorageStrategy: this.outputStorageStrategy,
       memoryMB: this.props.memoryMB,
+      timeoutSeconds: this.props.timeoutSeconds,
     };
     const logging: typeof constructProps.logging = {};
     if (this.props.logging?.level) {
@@ -65,12 +69,34 @@ class ConversationHandlerFunctionGenerator
       );
     }
     constructProps.logging = logging;
-    const conversationHandlerFunction = new ConversationHandlerFunction(
-      scope,
-      this.props.name,
-      constructProps
-    );
-    return conversationHandlerFunction;
+    try {
+      return new ConversationHandlerFunction(
+        scope,
+        this.props.name,
+        constructProps
+      );
+    } catch (e) {
+      throw this.mapConstructErrors(e);
+    }
+  };
+
+  private mapConstructErrors = (e: unknown) => {
+    if (!(e instanceof Error)) {
+      return e;
+    }
+    if (e.message.startsWith('memoryMB must be')) {
+      return new AmplifyUserError('InvalidMemoryMBError', {
+        message: `Invalid memoryMB of ${this.props.memoryMB}`,
+        resolution: e.message,
+      });
+    }
+    if (e.message.startsWith('timeoutSeconds must be')) {
+      return new AmplifyUserError('InvalidTimeoutError', {
+        message: `Invalid timeout of ${this.props.timeoutSeconds} seconds`,
+        resolution: e.message,
+      });
+    }
+    return e;
   };
 }
 
@@ -155,6 +181,12 @@ export type DefineConversationHandlerFunctionProps = {
    * Default is 512MB.
    */
   memoryMB?: number;
+  /**
+   * An amount of time in seconds between 1 second and 15 minutes.
+   * Must be a whole number.
+   * Default is 60 seconds.
+   */
+  timeoutSeconds?: number;
   logging?: ConversationHandlerFunctionLoggingOptions;
 };