add user-management

user-management/app/events/email_receiving.py

@@ -0,0 +1,45 @@
+import urllib.parse as urllib_parse
+from email.utils import parseaddr
+from typing import Any, Iterator
+
+from aws_lambda_powertools import Logger
+from aws_lambda_powertools.utilities.data_classes import SESEvent, event_source
+from aws_lambda_powertools.utilities.typing import LambdaContext
+
+logger = Logger(__name__)
+
+
+@logger.inject_lambda_context
+@event_source(data_class=SESEvent)
+def lambda_handler(event: SESEvent, context: LambdaContext) -> dict:
+    ses = event.record.ses
+    to = urllib_parse.unquote(ses.receipt.recipients[0]).lower()
+    name, email_from = parseaddr(get_header_value(ses.mail.headers, 'from'))
+    subject = get_header_value(
+        ses.mail.headers,
+        'subject',
+        default='',
+        raise_on_missing=False,
+    )
+
+    if email_from == 'sergio@somosbeta.com.br':
+        return {'disposition': 'CONTINUE'}
+
+    return {'disposition': 'STOP_RULE_SET'}
+
+
+def get_header_value(
+    headers: Iterator,
+    header_name: str,
+    *,
+    default: Any = None,
+    raise_on_missing: bool = True,
+) -> str:
+    for header in headers:
+        if header.name.lower() == header_name:
+            return header.value
+
+    if raise_on_missing:
+        raise ValueError(f'{header_name} not found.')
+
+    return default