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Notification Dispatcher

$19

Multi-channel notification system for email, Slack webhooks, generic webhooks, and desktop notifications.

📁 9 files

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📁 File Structure 9 files

notification-dispatcher/ ├── LICENSE ├── README.md ├── examples/ │ └── notifications_config.json ├── free-sample.zip ├── guide/ │ ├── 01_features.md │ ├── 02_quick-start.md │ └── 03_faq.md ├── index.html └── src/ └── notification_dispatcher.py

📖 Documentation Preview README excerpt

Notification Dispatcher

A multi-channel notification system built on Python stdlib. Send alerts via email (SMTP), Slack-compatible webhooks, generic HTTP webhooks, and SMS gateways. Supports template rendering, priority levels, retry logic, and delivery logging to SQLite.

Features

Multi-channel dispatch — Email (SMTP), Slack webhooks, HTTP webhooks, SMS gateways, console
Template rendering — Python string.Template placeholders in messages
Priority levels — low, normal, high, critical with per-channel routing
Retry with backoff — Exponential backoff on delivery failures (3 retries default)
Delivery logging — Track every send attempt in SQLite
Batch dispatch — Send multiple notifications from a single config file
Config-driven — Define channels, templates, and recipients in JSON

Requirements

Python 3.10+
No external dependencies (stdlib only)
SMTP server access for email delivery
Webhook URLs for Slack/webhook channels

Quick Start


# Send a quick email
python src/notification_dispatcher.py --channel email \
    --to user@example.com --subject "Alert" --message "Server CPU at 95%"

# Send a Slack notification
python src/notification_dispatcher.py --channel slack \
    --to "#ops-alerts" --message "Deploy complete" \
    --webhook-url https://hooks.example.com/services/T00/B00/xxx

# Send a webhook notification
python src/notification_dispatcher.py --channel webhook \
    --to https://api.example.com/v1/alerts --message '{"event": "deploy"}'

# Batch dispatch from config
python src/notification_dispatcher.py --config examples/notifications_config.json

Configuration Reference


{
    "channels": {
        "email": {
            "smtp_host": "smtp.example.com",
            "smtp_port": 587,
            "smtp_user": "alerts@example.com",
            "smtp_pass": "YOUR_SMTP_PASSWORD_HERE",
            "from_address": "alerts@example.com"
        },
        "slack": {
            "webhook_url": "https://hooks.example.com/services/T00/B00/YOUR_TOKEN"
        },
        "webhook": {
            "default_url": "https://api.example.com/v1/notifications"
        }
    },

*... continues with setup instructions, usage examples, and more.*

📄 Code Sample .py preview

src/notification_dispatcher.py #!/usr/bin/env python3 """ Notification Dispatcher — Automation Hub (DataNest) A multi-channel notification system built on Python stdlib. Supports email (SMTP), webhook (HTTP POST), Slack-compatible webhooks, and SMS gateway dispatch. Features template rendering, scheduling, retry logic, and delivery logging. Usage: python notification_dispatcher.py --channel email --to user@example.com --message "Hello!" python notification_dispatcher.py --config notifications_config.json python notification_dispatcher.py --channel slack --message "Deploy complete" --webhook-url https://hooks.example.com/services/T00/B00/xxx Dependencies: Python 3.10+ stdlib only (no pip packages) License: MIT """ from __future__ import annotations import argparse import email.mime.multipart import email.mime.text import json import logging import re import smtplib import sqlite3 import string import threading import time import urllib.error import urllib.request from dataclasses import dataclass, field from datetime import datetime, timezone from enum import Enum from pathlib import Path from typing import Any # --------------------------------------------------------------------------- # Constants # --------------------------------------------------------------------------- LOG_FORMAT = "%(asctime)s [%(levelname)s] %(name)s: %(message)s" MAX_RETRIES = 3 RETRY_DELAY_S = 2.0 BACKOFF_MULTIPLIER = 2.0 logger = logging.getLogger("notification_dispatcher") # ... 695 more lines ...

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