publishing file

Author: ellisms

appsync-events-lambda-agentcore-cdk/appsync-events-lambda-agentcore-cdk.json

@@ -0,0 +1,113 @@
+{
+    "title": "Streaming chat with AWS AppSync Events and Amazon Bedrock AgentCore",
+    "description": "Stream AI agent responses in real time using AWS AppSync Events WebSockets, two-phase AWS Lambda functions, and Amazon Bedrock AgentCore Runtime.",
+    "language": "Python",
+    "level": "300",
+    "framework": "AWS CDK",
+    "introBox": {
+        "headline": "How it works",
+        "text": [
+            "This pattern deploys a real-time streaming chat service using AWS AppSync Events with a two-phase Lambda architecture to invoke a Strands agent running on Amazon Bedrock AgentCore Runtime.",
+            "The client publishes messages to an inbound channel via HTTP. AppSync Events triggers an agent invoker Lambda via direct Lambda integration (synchronous only), which asynchronously invokes a separate stream relay Lambda function, then returns immediately. Two Lambda functions are needed because AppSync Events requires a synchronous function invocation, so the invoker must return quickly. The stream relay calls the AgentCore Runtime, consumes the Server-Sent Events (SSE) stream, and publishes response chunks back to a separate response channel.",
+            "The client receives agent response tokens in real time via a WebSocket subscription. Separate channel namespaces for inbound and outbound traffic prevent re-invocation loops."
+        ]
+    },
+    "gitHub": {
+        "template": {
+            "repoURL": "https://github.com/aws-samples/serverless-patterns/tree/main/appsync-events-lambda-agentcore-cdk",
+            "templateURL": "serverless-patterns/appsync-events-lambda-agentcore-cdk",
+            "projectFolder": "appsync-events-lambda-agentcore-cdk",
+            "templateFile": "cdk/stack.py"
+        }
+    },
+    "resources": {
+        "bullets": [
+            {
+                "text": "AppSync Events API",
+                "link": "https://docs.aws.amazon.com/appsync/latest/eventapi/event-api-welcome.html"
+            },
+            {
+                "text": "Amazon Bedrock AgentCore",
+                "link": "https://docs.aws.amazon.com/bedrock/latest/userguide/agentcore.html"
+            }
+        ]
+    },
+    "deploy": {
+        "text": [
+            "python -m venv .venv && source .venv/bin/activate",
+            "pip install -r requirements.txt",
+            "cdk bootstrap",
+            "cdk deploy"
+        ]
+    },
+    "testing": {
+        "text": [
+            "See the GitHub repo for detailed testing instructions using the AppSync Pub/Sub Editor and automated tests."
+        ]
+    },
+    "cleanup": {
+        "text": [
+            "Delete the stack: <code>cdk destroy</code>."
+        ]
+    },
+    "authors": [
+        {
+            "name": "Pete Davis",
+            "image": "https://github.com/pjdavis-aws.png",
+            "bio": "Senior Partner Solution Architect at AWS",
+            "linkedin": "peter-davis-2676585"
+        }
+    ],
+    "patternArch": {
+        "icon1": {
+            "x": 5,
+            "y": 50,
+            "service": "icon-internet",
+            "label": "Client"
+        },
+        "icon2": {
+            "x": 30,
+            "y": 50,
+            "service": "appsync",
+            "label": "AWS AppSync Events"
+        },
+        "icon3": {
+            "x": 55,
+            "y": 20,
+            "service": "lambda",
+            "label": "AWS Lambda"
+        },
+        "icon4": {
+            "x": 55,
+            "y": 68,
+            "service": "lambda",
+            "label": "AWS Lambda"
+        },
+        "icon5": {
+            "x": 83,
+            "y": 68,
+            "service": "bedrock-agentcore",
+            "label": "Amazon Bedrock AgentCore"
+        },
+        "line1": {
+            "from": "icon1",
+            "to": "icon2",
+            "label": "Subscribe/chat"
+        },
+        "line2": {
+            "from": "icon2",
+            "to": "icon3",
+            "label": "Invoke chat"
+        },
+        "line4": {
+            "from": "icon4",
+            "to": "icon5",
+            "label": "Invoke agent"
+        },
+        "line5": {
+            "from": "icon2",
+            "to": "icon4",
+            "label": "Results"
+        }
+    }
+}