[GitHub] ashb commented on a change in pull request #4245: [AIRFLOW-3404] Add Amazon SES support

[GitBox <gi...@apache.org>]

ashb commented on a change in pull request #4245: [AIRFLOW-3404] Add Amazon SES support
URL: https://github.com/apache/airflow/pull/4245#discussion_r251232523
 
 

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 File path: airflow/contrib/utils/ses.py
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 @@ -0,0 +1,94 @@
+# -*- coding: utf-8 -*-
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+import logging
+import os
+import boto3
+
+from email.mime.application import MIMEApplication
+from email.mime.multipart import MIMEMultipart
+from email.mime.text import MIMEText
+from email.utils import formatdate
+
+from airflow import configuration
+
+
+def send_email(to, subject, html_content, files=None, dryrun=False, cc=None,
+               bcc=None, mime_subtype='mixed', sandbox_mode=False, **kwargs):
+    """
+    Send an email with html content using Amazon SES.
+
+    To use this plugin:
+    0. include ses subpackage as part of your Airflow installation, e.g.,
+    pip install apache-airflow[ses]
+    1. update [email] backend in airflow.cfg, i.e.,
+    [email]
+    email_backend = airflow.contrib.utils.ses.send_email
+    2. configure SES specific setting in airflow.cfg, e.g.:
+    [ses]
+    aws_region = eu-west-1
+    """
+    mail_from = configuration.get('smtp', 'SMTP_MAIL_FROM')
+    to = _get_email_address_list(to)
+
+    message = MIMEMultipart(mime_subtype)
+    message['Subject'] = subject
+    message['From'] = mail_from
+    message['To'] = ", ".join(to)
+    if cc:
+        cc = _get_email_address_list(cc)
+        message['Cc'] = ", ".join(cc)
+    if bcc:
+        bcc = _get_email_address_list(bcc)
+        message['Bcc'] = ", ".join(bcc)
+
+    message['Date'] = formatdate(localtime=True)
+    mime_text = MIMEText(html_content, 'html')
+    message.attach(mime_text)
+
+    for file_name in files or []:
+        basename = os.path.basename(file_name)
+        with open(file_name, "rb") as f:
+            message.attach(MIMEApplication(
+                f.read(),
+                Content_Disposition='attachment; filename="{}"'.format(basename),
+                Name=basename
+            ))
+
+    if not dryrun:
+        _ses_send_raw_email(message)
+
+
+def _ses_send_raw_email(message):
+        aws_region = configuration.get('ses', 'REGION')
+        ses = boto3.client('ses', region_name=aws_region)
+        data = message.as_string()
+        ses.send_raw_email(RawMessage={'Data': data})
+
+
+def _get_email_address_list(address_string):
 
 Review comment:
   We shouldn't need to duplicate this - -this function already exists elsewhere in the codebase we can reuse.

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