# Notification System Documentation
## Overview
The notification system provides a flexible way to receive alerts about API usage and system events through multiple channels. It supports email, webhook, Slack, and Microsoft Teams notifications, with configurable templates and delivery options.
## Notification Types
### 1. Email Notifications
Email notifications are sent to specified recipients when alerts are triggered. They include:
- Configurable recipient list
- Customizable subject template
- HTML-formatted message body
- Alert details and context
Configuration options:
```json
{
"recipients": ["user@example.com", "team@example.com"],
"subject_template": "Alert: {{alert.type}} - {{alert.level}}"
}
```
### 2. Webhook Notifications
Webhook notifications send HTTP requests to specified endpoints with alert data. Features:
- Configurable HTTP method (POST/PUT)
- Customizable payload format
- Retry mechanism for failed deliveries
- Authentication support
Configuration options:
```json
{
"url": "https://example.com/webhook",
"method": "POST",
"headers": {
"Authorization": "Bearer token"
}
}
```
### 3. Slack Notifications
Slack notifications post messages to specified channels using Slack's webhook API. Features:
- Channel selection
- Rich message formatting
- Interactive buttons
- Thread support
Configuration options:
```json
{
"webhook_url": "https://hooks.slack.com/services/...",
"channel": "#alerts"
}
```
### 4. Microsoft Teams Notifications
Teams notifications post messages to specified channels using Microsoft Teams' webhook API. Features:
- Channel selection
- Rich card formatting
- Action buttons
- Adaptive cards support
Configuration options:
```json
{
"webhook_url": "https://outlook.office.com/webhook/..."
}
```
## Alert Templates
Each notification type supports customizable templates for alert messages:
### Email Template
```html
<h2>Alert: {{alert.type}}</h2>
<p><strong>Level:</strong> {{alert.level}}</p>
<p><strong>Message:</strong> {{alert.message}}</p>
<p><strong>Value:</strong> {{alert.value}}</p>
<p><strong>Threshold:</strong> {{alert.threshold}}</p>
<p><strong>Timestamp:</strong> {{alert.timestamp}}</p>
```
### Webhook Payload
```json
{
"type": "{{alert.type}}",
"level": "{{alert.level}}",
"message": "{{alert.message}}",
"value": {{alert.value}},
"threshold": {{alert.threshold}},
"timestamp": "{{alert.timestamp}}"
}
```
### Slack Message
```json
{
"blocks": [
{
"type": "header",
"text": {
"type": "plain_text",
"text": "Alert: {{alert.type}}"
}
},
{
"type": "section",
"fields": [
{
"type": "mrkdwn",
"text": "*Level:*\n{{alert.level}}"
},
{
"type": "mrkdwn",
"text": "*Value:*\n{{alert.value}}"
}
]
}
]
}
```
### Teams Card
```json
{
"type": "message",
"attachments": [
{
"contentType": "application/vnd.microsoft.card.adaptive",
"content": {
"type": "AdaptiveCard",
"body": [
{
"type": "TextBlock",
"size": "Medium",
"weight": "Bolder",
"text": "Alert: {{alert.type}}"
},
{
"type": "FactSet",
"facts": [
{
"title": "Level:",
"value": "{{alert.level}}"
},
{
"title": "Value:",
"value": "{{alert.value}}"
}
]
}
]
}
}
]
}
```
## Configuration
### Environment Variables
```env
# Email Configuration
SMTP_HOST=smtp.example.com
SMTP_PORT=587
SMTP_USER=user@example.com
SMTP_PASSWORD=password
SMTP_FROM=noreply@example.com
# Webhook Configuration
WEBHOOK_TIMEOUT=5
WEBHOOK_RETRY_ATTEMPTS=3
WEBHOOK_RETRY_DELAY=1
# Slack Configuration
SLACK_TIMEOUT=5
SLACK_RETRY_ATTEMPTS=3
# Teams Configuration
TEAMS_TIMEOUT=5
TEAMS_RETRY_ATTEMPTS=3
```
### API Endpoints
1. **List Notifications**
```
GET /api/notifications
```
2. **Create Notification**
```
POST /api/notifications
```
3. **Get Notification**
```
GET /api/notifications/{id}
```
4. **Update Notification**
```
PUT /api/notifications/{id}
```
5. **Delete Notification**
```
DELETE /api/notifications/{id}
```
6. **Get Notification Logs**
```
GET /api/notifications/{id}/logs
```
7. **Test Notification**
```
POST /api/notifications/{id}/test
```
## Best Practices
1. **Configuration**
- Use environment variables for sensitive data
- Configure appropriate timeouts and retry attempts
- Enable notifications only when needed
- Use descriptive names for notification configurations
2. **Templates**
- Keep templates simple and readable
- Include essential information only
- Use consistent formatting
- Test templates with different alert types
3. **Monitoring**
- Regularly check notification logs
- Monitor delivery success rates
- Set up alerts for notification failures
- Review and update configurations periodically
4. **Security**
- Use secure connections (HTTPS)
- Implement proper authentication
- Rotate credentials regularly
- Limit access to notification settings
## Troubleshooting
### Common Issues
1. **Email Notifications Not Sent**
- Check SMTP configuration
- Verify recipient addresses
- Check spam filters
- Review email server logs
2. **Webhook Failures**
- Verify endpoint URL
- Check authentication
- Review network connectivity
- Check payload format
3. **Slack/Teams Integration Issues**
- Verify webhook URLs
- Check channel permissions
- Review message formatting
- Check rate limits
### Debugging Steps
1. Check notification logs
2. Verify configuration settings
3. Test with simple messages
4. Review network connectivity
5. Check authentication
6. Verify template formatting
## Integration Examples
### Python
```python
import requests
# Create email notification
email_config = {
"name": "API Alerts",
"type": "email",
"enabled": True,
"config": {
"recipients": ["team@example.com"],
"subject_template": "Alert: {{alert.type}}"
}
}
response = requests.post(
"http://api.example.com/notifications",
json=email_config,
headers={"Authorization": "Bearer token"}
)
```
### JavaScript
```javascript
// Create webhook notification
const webhookConfig = {
name: "API Monitoring",
type: "webhook",
enabled: true,
config: {
url: "https://example.com/webhook",
method: "POST"
}
};
fetch("http://api.example.com/notifications", {
method: "POST",
headers: {
"Authorization": "Bearer token",
"Content-Type": "application/json"
},
body: JSON.stringify(webhookConfig)
});
```
## Maintenance
### Regular Tasks
1. Review notification configurations
2. Check delivery success rates
3. Update templates as needed
4. Rotate credentials
5. Clean up old logs
### Backup and Recovery
1. Export notification configurations
2. Backup templates
3. Document integration settings
4. Test recovery procedures
5. Maintain contact lists