added helpers to leverage for various libraries

app/helpers/aws_helper.py

@@ -0,0 +1,37 @@
+import boto3
+import os
+import json
+
+session = boto3.Session(
+  aws_access_key_id=os.environ['SOLVER_AWS_ACCESS_KEY_ID'],
+  aws_secret_access_key=os.environ['SOLVER_AWS_SECRET_ACCESS_KEY']
+)
+
+s3 = session.resource('s3', region_name=os.environ['SOLVER_AWS_REGION'])
+sqs = session.client('sqs', region_name=os.environ['SOLVER_AWS_REGION'])
+
+def get_key_from_message(message):
+  body = json.loads(message['Body'])
+  return body['Records'][0]['s3']['object']['key']
+
+def get_object(key, bucket):
+  return s3.Object(
+    bucket_name=bucket,
+    key=key
+  ).get()['Body'].read()
+
+def file_stream_upload(buffer, name, bucket):
+  return s3.Bucket(bucket).upload_fileobj(buffer, name)
+
+def receive_message(queue, message_num=1, wait_time=1):
+  return sqs.receive_message(
+    QueueUrl=queue,
+    MaxNumberOfMessages=message_num,
+    WaitTimeSeconds=wait_time
+  )
+
+def delete_message(queue, receipt):
+  return sqs.delete_message(
+    QueueUrl=queue,
+    ReceiptHandle=receipt
+  )