Add Telegram webhook integration to plugin

plugins/telegram/alerta_telegram.py

@@ -10,6 +10,8 @@ LOG = app.logger
 
 TELEGRAM_TOKEN = os.environ.get('TELEGRAM_TOKEN') or app.config['TELEGRAM_TOKEN']
 TELEGRAM_CHAT_ID = os.environ.get('TELEGRAM_CHAT_ID') or app.config['TELEGRAM_CHAT_ID']
+TELEGRAM_WEBHOOK_URL = os.environ.get('TELEGRAM_WEBHOOK_URL') or app.config.get('TELEGRAM_WEBHOOK_URL', None)
+
 DASHBOARD_URL = os.environ.get('DASHBOARD_URL') or app.config.get('DASHBOARD_URL', '')
 
 
@@ -20,6 +22,10 @@ class TelegramBot(PluginBase):
         self.bot = telepot.Bot(TELEGRAM_TOKEN)
         LOG.debug('Telegram: %s', self.bot.getMe())
 
+        if TELEGRAM_WEBHOOK_URL:
+            self.bot.setWebhook(TELEGRAM_WEBHOOK_URL)
+            LOG.debug('Telegram: %s', self.bot.getWebhookInfo())
+
         super(TelegramBot, self).__init__(name)
 
     def pre_receive(self, alert):
@@ -42,8 +48,21 @@ class TelegramBot(PluginBase):
 
         LOG.debug('Telegram: message=%s', text)
 
+        if TELEGRAM_WEBHOOK_URL:
+            keyboard = {
+                'inline_keyboard': [
+                    [
+                        {'text':'ack', 'callback_data': '/ack ' + alert.id},
+                        {'text':'close', 'callback_data': '/close ' + alert.id},
+                        {'text':'blackout', 'callback_data': '/blackout %s|%s|%s' % (alert.environment, alert.resource, alert.event)}
+                    ]
+                ]
+            }
+        else:
+            keyboard = None
+
         try:
-            r = self.bot.sendMessage(TELEGRAM_CHAT_ID, text, parse_mode='Markdown')
+            r = self.bot.sendMessage(TELEGRAM_CHAT_ID, text, parse_mode='Markdown', reply_markup=keyboard)
         except Exception as e:
             raise RuntimeError("Telegram: ERROR - %s", e)