Update aws.py (#38)

* Update aws.py

add function for users to send message to aws sqs

* Update aws.py

fix the format

* Update aws.py

reformat

zdatasets/utils/aws.py

@@ -37,17 +37,14 @@ def get_aws_session(role_arn: str = None, profile_name: str = None) -> Session:
         role_arn=role_arn,
     )
 
-    # Retrieve crednetials of the assumed role and auto-refresh
-    credentials = DeferredRefreshableCredentials(
-        method="assume-role", refresh_using=fetcher.fetch_credentials
+    # Create new session with assumed role and auto-refresh
+    botocore_session = Session()
+    botocore_session._credentials = DeferredRefreshableCredentials(
+        method="assume-role",
+        refresh_using=fetcher.fetch_credentials,
     )
 
-    return boto3.Session(
-        aws_access_key_id=credentials.access_key,
-        aws_secret_access_key=credentials.secret_key,
-        aws_session_token=credentials.token,
-        region_name=region_name,
-    )
+    return boto3.Session(botocore_session=botocore_session, region_name=region_name)
 
 
 def get_aws_client(role_arn: str, service: str):
@@ -63,6 +60,46 @@ def get_aws_client(role_arn: str, service: str):
     return session.client(service)
 
 
+def send_sqs_message(
+    queue_url: str,
+    message_body: str,
+    *,  # keyword-only parameters
+    role_arn: str = None,
+    profile_name: str = None,
+) -> None:
+    """
+    Args:
+        queue_url: the url of SQS to write messages to,
+            i.e.'https://sqs.<region>.amazonaws.com/<account_id>/<queue_name>'
+        message_body: i.e.  ‘{"date_key": "2023-01-01", "accuracy_threshold": 0.5}'
+        role_arn: optional
+        profile_name: optional, mainly for testing/debugging purposes
+    Returns: None
+    Exceptions:
+        botocore.exceptions.ClientError  # no permissions to assume role or to SendMessage to SQS
+        AWS.SimpleQueueService.NonExistentQueue
+        SQS.Client.exceptions.InvalidMessageContents
+        SQS.Client.exceptions.UnsupportedOperation
+    """
+    # Create session from given iam role and/or aws profile
+    session = get_aws_session(role_arn, profile_name)
+
+    # Create an SQS client from the session
+    sqs = session.client("sqs")
+
+    # Send message to SQS queue
+    try:
+        response = sqs.send_message(QueueUrl=queue_url, MessageBody=message_body)
+
+        _logger.debug(
+            f"Successfully sent the message {message_body} "
+            f"to sqs {queue_url} with MessageId {response['MessageId']}"
+        )
+    except Exception as err:
+        _logger.error(f"Failed to send the message {message_body} to sqs {queue_url}")
+        raise err
+
+
 def get_paginated_list_objects_iterator(
     s3_client: boto3.session.Session.client, search: Optional[str] = "Content", **kwargs
 ) -> Iterable: