update to aws location services

lambdas/get_location.py

@@ -2,54 +2,90 @@ import logging
 import json
 from typing import Dict, Any
 from http import HTTPStatus
-import urllib.request
+import boto3
+from botocore.exceptions import ClientError
+import os
+
+REGION = os.environ['AWS_REGION']
 
 logger = logging.getLogger()
 logger.setLevel(logging.INFO)
 
+# Replace with the name of your AWS Location Place Index
+PLACE_INDEX_NAME = 'helpngoindex'
+
+def ensure_place_index_exists(index_name: str):
+    client = boto3.client('location', region_name=REGION)
+
+    # Check if index exists
+    try:
+        response = client.list_place_indexes()
+        if any(entry['IndexName'] == index_name for entry in response['Entries']):
+            print(f"✅ Place index '{index_name}' already exists.")
+            return
+    except ClientError as e:
+        print(f"❌ Error listing indexes: {e}")
+        return
+
+    # Create the index
+    try:
+        print(f"🆕 Creating place index '{index_name}' in region '{region}'...")
+        client.create_place_index(
+            IndexName=index_name,
+            DataSource='Here',
+            Description='Auto-created place index for geocoding',
+            PricingPlan='RequestBasedUsage'
+        )
+    except ClientError as e:
+        print(f"❌ Error creating index: {e}")
+        return
+
+    # Wait until ACTIVE
+    print("⏳ Waiting for index to become ACTIVE...")
+    while True:
+        try:
+            status = client.describe_place_index(IndexName=index_name)['Status']
+            print(f"Status: {status}")
+            if status == 'ACTIVE':
+                print(f"✅ Place index '{index_name}' is now ACTIVE.")
+                break
+            time.sleep(2)
+        except ClientError as e:
+            print(f"❌ Error checking status: {e}")
+            break
+
+# Initialize the AWS Location client
+location_client = boto3.client('location', region_name=REGION)
+
 def lambda_handler(event: Dict[str, Any], context: Any) -> Dict[str, Any]:
     """
-    AWS Lambda handler for processing Bedrock agent requests and geocoding location names using Nominatim.
-
-    Args:
-        event (Dict[str, Any]): The Lambda event containing action details
-        context (Any): The Lambda context object
-
-    Returns:
-        Dict[str, Any]: Response formatted for Bedrock Agents
+    AWS Lambda handler for processing Bedrock agent requests and geocoding location names using AWS Location Service.
     """
     try:
         action_group = event['actionGroup']
         function = event['function']
         message_version = event.get('messageVersion', 1)
         parameters = event.get('parameters', [])
-        print(parameters)
-        parameters_dict ={parameter["name"]:parameter["value"] for parameter in parameters}
+
+        parameters_dict = {parameter["name"]: parameter["value"] for parameter in parameters}
         location_name = parameters_dict.get('location_name')
         if not location_name:
             raise KeyError("Missing required parameter: 'location_name'")
 
-        # Call Nominatim API to geocode the location
-        query = urllib.parse.urlencode({
-            "q": location_name,
-            "format": "json",
-            "limit": 1
-        })
-        headers = {
-            "User-Agent": "aws-lambda-geocoder/1.0"
-        }
-        url = f"https://nominatim.openstreetmap.org/search?{query}"
+        # Use AWS Location Service to geocode the location
+        ensure_place_index_exists(PLACE_INDEX_NAME)
+        response = location_client.search_place_index_for_text(
+            IndexName=PLACE_INDEX_NAME,
+            Text=location_name,
+            MaxResults=1
+        )
 
-        req = urllib.request.Request(url, headers=headers)
-        with urllib.request.urlopen(req) as response:
-            response_data = response.read()
-            print(response_data)
-            results = json.loads(response_data)
+        results = response.get("Results", [])
         if not results:
             raise ValueError(f"No coordinates found for '{location_name}'")
 
-        lat = float(results[0]["lat"])
-        lon = float(results[0]["lon"])
+        # Extract coordinates [Longitude, Latitude]
+        lon, lat = results[0]['Place']['Geometry']['Point']
 
         # Prepare Bedrock-compatible response
         response_body = {
@@ -80,6 +116,14 @@ def lambda_handler(event: Dict[str, Any], context: Any) -> Dict[str, Any]:
             'statusCode': HTTPStatus.BAD_REQUEST,
             'body': f'Error: {str(e)}'
         }
+
+    except ClientError as e:
+        logger.error('AWS Location error: %s', str(e))
+        return {
+            'statusCode': HTTPStatus.INTERNAL_SERVER_ERROR,
+            'body': f'AWS Location error: {str(e)}'
+        }
+
     except Exception as e:
         logger.error('Unexpected error: %s', str(e))
         return {