Add code to publish messages to sns topic

api-lambda/requirements.txt

@@ -0,0 +1,8 @@
+boto3==1.18.31
+botocore==1.21.31
+jmespath==0.10.0
+python-dateutil==2.8.2
+s3transfer==0.5.0
+six==1.16.0
+urllib3==1.26.6
+python-decouple==3.4

api-lambda/src/request_handler.py

@@ -0,0 +1,25 @@
+import json
+
+from boto3 import Session
+from decouple import config
+
+
+def event_handler(event, context):
+    session: Session = configure_boto3_session()
+    client = session.client("sns")
+
+    client.publish(
+        TargetArn=config("sns_topic_arn"),
+        Message=json.dumps({'default': json.dumps(event)}),
+        MessageStructure='json'
+    )
+
+    return "Tweet Successfully Sent"
+
+
+def configure_boto3_session() -> Session:
+    return Session(
+        aws_access_key_id=config("aws_access_key_id"),
+        aws_secret_access_key=config("aws_secret_access_key"),
+        region_name="eu-west-1"
+    )