README.md

@@ -3,8 +3,7 @@
 SMTP gateway accessible from InfluxDB for sending alerts.
 
 # create .env file with following parameters
-server_host = 0.0.0.0
-server_port = 8081
+server_name = smtp.gmail.com
 to_mail = test111@mailinator.com
 from_mail = test@gmail.com
 from_mail_password = test@123

docker-compose.yml

@@ -3,7 +3,7 @@ version: '3.8'
 services:
   web:
     build: .
-    ports:
-      - 8081:8081
+    expose:
+      - "8081"
     env_file:
       - ./.env

main.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 """
-Serve cloud init files
+SMTP webhook server
 """
 
 import os
@@ -13,20 +13,19 @@ from email.mime.text import MIMEText
 import cherrypy
 
 
-class CloudInitApp:
+class SMTPWebhookApp:
     """
-    Serve cloud init files
+    SMTP webhook server
     """
 
     def _send_mail(self):
         try:
-            # pylint: disable=deprecated-lambda
             cl = cherrypy.request.headers['Content-Length']
             rawbody = cherrypy.request.body.read(int(cl))
             req_body = json.loads(rawbody)
             subject = req_body['subject']
             body = req_body['body']
-            client = smtplib.SMTP('smtp.gmail.com')
+            client = smtplib.SMTP(SERVER_NAME)
             msg = MIMEText(body, 'plain', 'utf-8')
             msg['Subject'] = Header(subject, 'utf-8')
             msg['From'] = FROM_MAIL
@@ -45,26 +44,28 @@ class CloudInitApp:
     @cherrypy.expose
     def send_mail(self):
         """
-        v1 api endpoint user-data
+        api endpoint for send mail
         """
         return self._send_mail()
 
 
-ROOT = CloudInitApp()
+ROOT = SMTPWebhookApp()
 
 if __name__ == "__main__":
     try:
-        SERVER_HOST = os.environ["server_host"]
-        SERVER_PORT = int(os.environ["server_port"])
+        SERVER_NAME = os.environ["server_name"]
         TO_MAIL = os.environ["to_mail"]
         FROM_MAIL = os.environ["from_mail"]
         FROM_MAIL_PASSWORD = os.environ["from_mail_password"]
-    except:  # noqa:E722
+        # to_mail = "test111@mailinator.com"
+        # from_mail = "test@gmail.com"
+        # from_mail_password = "test@123"
+    except KeyError:
         raise "Please check missing environment variables: to_mail, from_mail, \
             from_mail_password"
 
-    cherrypy.server.socket_host = SERVER_HOST
-    cherrypy.server.socket_port = SERVER_PORT
+    cherrypy.server.socket_host = "0.0.0.0"
+    cherrypy.server.socket_port = 8081
     ENGINE = cherrypy.engine
 
     cherrypy.tree.mount(ROOT, config={})