Agent notifications

For details on the notification types, what causes them to be triggered, and the data they provide, see Set up notification listener documentation for the Go SDK.

Configuration

By default, the notifications endpoint is disabled. To enable it, update theconfig.yaml file:

# config.yaml
api:
    enableNotifications: true

Or, enable it by setting an environment variable:

# set an env. variable
export OPTIMIZELY_API_ENABLENOTIFICATIONS=1

Usage

Send a GET request to /v1/notifications/event-stream to subscribe:

curl -N -H "Accept:text/event-stream" -H "X-Optimizely-Sdk-Key:<YOUR SDK KEY>"\
  http://localhost:8080/v1/notifications/event-stream

This connection will remain open, and any notifications triggered by other requests received by Agent are pushed as events to this stream. Try sending requests to /v1/activate or /v1/track to see notifications being triggered.

Filtering

To subscribe only to a particular category of notifications, add a filter query parameter. For example, to subscribe only to Decision notifications:

# filter on decision notifications
curl -N -H "Accept:text/event-stream" -H "X-Optimizely-Sdk-Key:<YOUR SDK KEY>"\
  http://localhost:8080/v1/notifications/event-stream?filter=decision

When the Agent is operating in High Availability (HA) mode, you need to enable notification synchronization to get notifications from the nodes in an HA setup. A PubSub system (Redis) is now used to ensure consistent retrieval of notification events across all nodes in an HA setup.

Here is an example of how you can enable the notification synchronization with Redis:

## synchronization should be enabled when features for multiple nodes like notification streaming are deployed
synchronization:
    pubsub:
        redis:
            host: "localhost:6379"
            password: ""
            database: 0
    ## if notification synchronization is enabled, then the active notification event-stream API
    ## will get the notifications from available replicas
    notification:
        enable: true
        default: "redis"

Example

For a runnable Python example, see examples/notifications.py in GitHub.