# AIVA: Implement Alerting for Email Throttling

This PRD focuses on implementing alerting based on email throttling metrics, allowing proactive response to potential email delivery issues.

### GPM-064: Define Email Throttling Alert Thresholds
**Goal:** Establish specific thresholds for email throttling metrics that trigger alerts.
**Acceptance Criteria:**
- A configuration file (e.g., `config/email_throttling_alerts.yaml`) exists containing thresholds for:
    - Email queue length (number of emails waiting to be sent)
    - Email sending rate (emails sent per minute/hour)
    - Number of failed email sending attempts.
- Thresholds are configurable per environment (e.g., development, staging, production).
- Default thresholds are defined and reasonable.
**Files:** `config/email_throttling_alerts.yaml`, `docs/email_throttling_alerts.md` (documenting the config file)
**Spawns:** Implement a mechanism to dynamically update alert thresholds without requiring a service restart.

### GPM-065: Implement Email Queue Length Alert
**Goal:** Trigger an alert when the email queue length exceeds the defined threshold.
**Acceptance Criteria:**
- A function/module is created to check the current email queue length against the configured threshold.
- An alert is triggered (logged with specific severity, e.g., WARNING or ERROR) when the threshold is exceeded.
- The alert message includes the current queue length and the configured threshold.
- The alert is only triggered once per threshold breach, until the queue length falls below the threshold and then exceeds it again.  This prevents alert spam.
**Files:** `aiva/alerts/email_queue_length.py`, `aiva/utils/queue_length.py` (or similar)
**Spawns:** Implement a similar alert for exceeding the email sending rate threshold.

### GPM-066: Implement Email Sending Rate Alert
**Goal:** Trigger an alert when the email sending rate exceeds the defined threshold.
**Acceptance Criteria:**
- A function/module is created to check the current email sending rate against the configured threshold.
- The email sending rate is calculated over a configurable time window (e.g., 1 minute, 5 minutes).
- An alert is triggered (logged with specific severity, e.g., WARNING or ERROR) when the threshold is exceeded.
- The alert message includes the current sending rate, the configured threshold, and the time window used for calculation.
- The alert is only triggered once per threshold breach until the rate falls below the threshold and exceeds it again.
**Files:** `aiva/alerts/email_sending_rate.py`, `aiva/utils/sending_rate.py` (or similar)
**Spawns:** Implement an alert for a high number of failed email sending attempts.

### GPM-067: Implement Failed Email Sending Attempts Alert
**Goal:** Trigger an alert when the number of failed email sending attempts exceeds the defined threshold.
**Acceptance Criteria:**
- A function/module is created to check the number of failed email sending attempts against the configured threshold.
- The number of failed attempts is calculated over a configurable time window (e.g., 1 minute, 5 minutes).
- An alert is triggered (logged with specific severity, e.g., WARNING or ERROR) when the threshold is exceeded.
- The alert message includes the number of failed attempts, the configured threshold, and the time window used for calculation.
- The alert is only triggered once per threshold breach until the count falls below the threshold and exceeds it again.
**Files:** `aiva/alerts/email_failure_rate.py`, `aiva/utils/failure_rate.py` (or similar)
**Spawns:** Allow configuration of the severity level of each alert type (e.g., WARNING, ERROR, CRITICAL).

### GPM-068: Integrate Alerts with a Notification System
**Goal:** Send email throttling alerts to a specified notification channel (e.g., Slack, PagerDuty).
**Acceptance Criteria:**
- A configuration option exists to enable/disable sending alerts to the notification channel.
- A configuration option exists to specify the notification channel endpoint (e.g., Slack webhook URL).
- When an alert is triggered, a message is sent to the configured notification channel.
- The message includes relevant information about the alert (e.g., metric name, current value, threshold value, timestamp).
- Ensure the notification system integration is robust and handles potential errors gracefully (e.g., retries if the notification channel is temporarily unavailable).
**Files:** `aiva/notifications/slack.py` (or similar), `aiva/alerts/alert_handler.py` (general alert handling)
**Spawns:** Implement different notification channels (e.g., PagerDuty, SMS).

### GPM-069: Implement Alert Suppression
**Goal:** Prevent redundant alerts from overwhelming the notification channel.
**Acceptance Criteria:**
- A mechanism is implemented to suppress alerts for a configurable period of time after an alert of the same type has been sent.
- The suppression period is configurable per alert type.
- The suppression mechanism uses a caching or similar approach to track recent alerts.
**Files:** `aiva/alerts/alert_suppression.py`, updates to `aiva/alerts/alert_handler.py`
**Spawns:** Implement dynamic alert thresholds based on historical data and anomaly detection.

### GPM-070: Add Unit Tests for Alerting Logic
**Goal:** Ensure the reliability and correctness of the alerting logic.
**Acceptance Criteria:**
- Unit tests are created for each alerting module (e.g., `email_queue_length.py`, `email_sending_rate.py`, `email_failure_rate.py`).
- Unit tests cover various scenarios, including:
    - Exceeding the threshold
    - Not exceeding the threshold
    - Edge cases (e.g., zero values, very high values)
    - Alert suppression is working as expected.
- Code coverage for the alerting modules is above 80%.
**Files:** `tests/aiva/alerts/test_email_queue_length.py`, `tests/aiva/alerts/test_email_sending_rate.py`, `tests/aiva/alerts/test_email_failure_rate.py`, `tests/aiva/alerts/test_alert_suppression.py`
**Spawns:** Implement integration tests that verify the end-to-end alerting flow (from metric collection to notification).
