fixed voice client for new Bedrock API spec and flowise "quickstart" stack to simplify build process

Author: remi-td

examples/app-flowise/README.md

@@ -13,20 +13,23 @@ Refer to the [Flowise client guide](../../docs/client_guide/Flowise_with_teradat
 ## Quick start
 1. From the repo root run:
    ```bash
-   cd examples/app-flowise
-   cp env .env   
+   # Build the MCP serer docker image (set the ENABLE_FS_MODULE / ENABLE_TDVS_MODULE / ENABLE_TDML_MODULE environment variables to true to enable optional modules)
+   docker compose build
+   # Go to the Flowise stack directory (this) and set the configuration
+   cd examples/app-flowise    
+   cp env .env                
    ```
 
-2. Optional: Edit and update the `.env` file with your preferred configuration details. 
+1. Optional: Edit and update the `.env` file with your preferred configuration details. 
    If you don't the Teradata connection details will be inherited from your current environment variables, at least the DATABASE_URI variable is required.
 
-3. Launch the stack with docker compose (this will build MCP server image from `../Dockerfile`):
+2. Launch the stack with docker compose (this will build MCP server image from `../Dockerfile`):
 :
    ```bash
    export DATABASE_URI=teradata://username:password@host:1025  # Optional - ignore if you have already defined it in your .env file or current profile
    docker compose --env-file .env up  -d --remove-orphans
    ```
-4. Optional: monitor the logs
+1. Optional: monitor the logs
    ```bash
    docker logs teradata-mcp-server -f
    docker logs flowise -f

examples/app-flowise/docker-compose.yaml

@@ -1,6 +1,6 @@
 services:
     flowise:
-        image: flowise:latest
+        image: flowiseai/flowise:latest
         restart: always
         environment:
             - PORT=${PORT}
@@ -13,8 +13,6 @@ services:
             - TD_MCP_SERVER=http://teradata-mcp-server:8001/mcp
         ports:
             - "${PORT}:${PORT}"
-        extra_hosts:
-            - "dbccop1:${DATABASE_HOST}"
         container_name: flowise
         healthcheck:
             test: ['CMD', 'curl', '-f', 'http://localhost:${PORT}/api/v1/ping']
@@ -23,7 +21,7 @@ services:
             retries: 5
             start_period: 30s
         volumes:
-            - ${DATA_DIR}/.flowise:/root/.flowise
+        - ${DATA_DIR:-${PWD}/.flowise}:/root/.flowise
     teradata-mcp-server:
         image: teradata-mcp-server:latest
         restart: always
@@ -40,12 +38,10 @@ services:
             - TD_PEM=${TD_PEM}
             - VS_NAME=${VS_NAME}
         container_name: teradata-mcp-server
-        extra_hosts:
-            - "dbccop1:${DATABASE_HOST}"
         ports:
             - "${MCP_PORT}:${MCP_PORT}"
         volumes:
-            - ${TD_PEM}:${TD_PEM}
+             - ${TD_PEM:-${PWD}}:${TD_PEM:-/root/.td_pem}
         tty: true
 networks:
   default:

examples/app-voice-agent/mcp_voice_client.py

@@ -16,7 +16,7 @@
 from langchain_mcp_adapters.client import MultiServerMCPClient
 from langchain_mcp_adapters.tools import load_mcp_tools
 from langchain_mcp_adapters.prompts import load_mcp_prompt
-from smithy_aws_core.credentials_resolvers.environment import EnvironmentCredentialsResolver
+from smithy_aws_core.identity.environment import EnvironmentCredentialsResolver
 
 # Suppress warnings
 warnings.filterwarnings("ignore")
@@ -554,8 +554,6 @@ def _initialize_client(self):
             endpoint_uri=f"https://bedrock-runtime.{self.region}.amazonaws.com",
             region=self.region,
             aws_credentials_identity_resolver=EnvironmentCredentialsResolver(),
-            http_auth_scheme_resolver=HTTPAuthSchemeResolver(),
-            http_auth_schemes={"aws.auth#sigv4": SigV4AuthScheme()}
         )
         self.bedrock_client = BedrockRuntimeClient(config=config)
 

examples/app-voice-agent/requirements.txt

@@ -2,5 +2,5 @@ pyaudio>=0.2.13
 rx>=3.2.0
 smithy-aws-core>=0.0.1
 pytz
-aws_sdk_bedrock_runtime
+aws_sdk_bedrock_runtime>=0.1.0,<0.2.0
 langchain_mcp_adapters