From f1faca41d1b9ff55f0faa88ab1fec858d9ebe360 Mon Sep 17 00:00:00 2001
From: Adam Rabjerg <git@rabjerg.de>
Date: Sat, 19 Jun 2021 13:40:53 +0200
Subject: [PATCH] initial commit

---
 .gitignore              |  4 ++++
 flask_webhook_server.py | 25 +++++++++++++++++++++++++
 requirements.txt        |  2 ++
 run.sh                  | 17 +++++++++++++++++
 secrets.env.sample      |  5 +++++
 setup.sh                | 12 ++++++++++++
 twilio_send.py          | 24 ++++++++++++++++++++++++
 7 files changed, 89 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 flask_webhook_server.py
 create mode 100644 requirements.txt
 create mode 100755 run.sh
 create mode 100644 secrets.env.sample
 create mode 100755 setup.sh
 create mode 100644 twilio_send.py

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..d3e8a76
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+.git
+.idea
+venv
+__pycache__
diff --git a/flask_webhook_server.py b/flask_webhook_server.py
new file mode 100644
index 0000000..2dfa885
--- /dev/null
+++ b/flask_webhook_server.py
@@ -0,0 +1,25 @@
+#!/usr/bin/env python3
+from flask import Flask, request, Response
+from twilio_send import send_sms
+import datetime
+
+app = Flask(__name__)
+
+@app.route('/grafana_webhook', methods=['POST'])
+def respond_2_grafana():
+    print(request.json)
+    allowed_Url = 'https://grafana.home:443/'    # Basic source authentication, fill with the URL of your Grafana server
+    allowed_remote_addr = ["127.0.0.1"]          # Only webhooks form these addresses are allowed to send SMS
+    payload = f"Grafana alert: {datetime.datetime.now().strftime('%d-%m-%Y %H:%M:%S')}\n\n" \
+              f"Alert type: \"{request.json['ruleName']}\"\n\n" \
+              f"Alert state: \"{request.json['state']}\"\n\n" \
+              f"Message: \"{request.json['message']}\"\n\n" \
+              f"Metric.     Value.\n"
+    for metric in request.json['evalMatches']:
+        payload += f"{metric['metric']}     {metric['value']}\n"
+    if request.json["ruleUrl"].startswith(allowed_Url) and request.remote_addr in allowed_remote_addr:
+        send_sms(payload)
+    else:
+        print(f"Bad request source. {request.remote_addr} / {request.json['ruleUrl']}")
+        return Response(status=418)
+    return Response(status=200)
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..9c80e47
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+twilio
+flask
\ No newline at end of file
diff --git a/run.sh b/run.sh
new file mode 100755
index 0000000..ecf3517
--- /dev/null
+++ b/run.sh
@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+source ./venv/bin/activate
+export FLASK_APP=flask_webhook_server.py
+
+if [[ -z "$APP_DEPLOYMENT_TYPE" ]]; then
+  export APP_DEPLOYMENT_TYPE=private
+  echo -e "APP_DEPLOYMENT_TYPE not set \nIn order to set it to public: \"export APP_DEPLOYMENT_TYPE=public\""
+fi
+
+if [[ "$APP_DEPLOYMENT_TYPE" == "public" ]]; then
+  echo -e "Running app in \"Public mode\", app is exposed to the network!"
+  /usr/bin/env python -m flask run --host=0.0.0.0
+else
+  echo -e "Running app in \"Private mode\", app is NOT exposed to the network and only available to localhost."
+  /usr/bin/env python -m flask run
+fi
\ No newline at end of file
diff --git a/secrets.env.sample b/secrets.env.sample
new file mode 100644
index 0000000..de57f27
--- /dev/null
+++ b/secrets.env.sample
@@ -0,0 +1,5 @@
+[TWILIO]
+account_sid = YOUR_ACCOUNT_SID
+auth_token = YOUR_ACCOUNT_TOKEN
+from_nr = YOUR_SENDER_NUMBER
+to_nr = RECIVER_NUMBER
\ No newline at end of file
diff --git a/setup.sh b/setup.sh
new file mode 100755
index 0000000..58eaceb
--- /dev/null
+++ b/setup.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+echo "Creating virtual environment."
+python3 -m venv ./venv
+
+echo "Activating virtual environment."
+source ./venv/bin/activate
+
+echo "Installing packages to virtual environment."
+pip3 install -r ./requirements.txt
+
+echo "We are done here."
diff --git a/twilio_send.py b/twilio_send.py
new file mode 100644
index 0000000..987018f
--- /dev/null
+++ b/twilio_send.py
@@ -0,0 +1,24 @@
+#!/usr/bin/env python3
+import os
+from twilio.rest import Client
+import configparser
+
+config = configparser.ConfigParser()
+config.read("secrets.env")
+
+account_sid = config["TWILIO"]["account_sid"]
+auth_token = config["TWILIO"]["auth_token"]
+reciver_number = config["TWILIO"]["to_nr"]
+sender_number = config["TWILIO"]["from_nr"]
+client = Client(account_sid, auth_token)
+
+
+def send_sms(payload):
+    message = client.messages \
+                    .create(
+                         body=payload,
+                         from_=sender_number,
+                         to=reciver_number
+                     )
+
+    print(message.status)