Relay Reference

This is for:

Developer

In this article

Interfaces
Functions
Type Aliases

The Event Protocol and Coveo Relay are currently in open beta. If you’re interested in using the Event Protocol and Relay library, reach out to your Customer Success Manager (CSM).

Interfaces

`EventConfig`

The EventConfig object provides additonal information for the configuration associated with the event.

Properties

trackingId: string

The unique identifier of a web property. See What’s a tracking ID?.

`Meta`

The Meta object provides a structured representation of metadata associated with an emitted event. This object is auto-populated by Relay.

Properties

clientId: string

Persistent unique identifier of a device.
config: EventConfig

Configuration associated with the event.
location: nil | string

Browser Location’s href property if set.
referrer: nil | string

Browser Document’s referrer property if set.
source: string[]

Names and versions of the client side libraries which built and emitted this event.
ts: number

Timestamp when the event was emitted.
type: string

Event’s type that was emitted.
userAgent: nil | string

Browser Navigator’s user agent property if set.

`Relay`

Relay instance. This object provides a comprehensive set of variables and methods for interacting with the Event API.

Functions

emit

Sends an event to the Event API.
- Parameters
  - type: string
    
    Event’s type to be emitted.
  - payload: Record<string> | Record<any>
    
    Payload to include within the event.
- Returns void
getMeta

Gets the client-side generated meta object.
- Parameters
  - type: string
    
    Event’s type that will be included in the meta object.
- Returns Meta
off

Detach callback(s) from events. If only the "type" parameter is set, all callbacks for the specified type will be removed.
- Parameters
  - type: string
    
    Event’s type.
  - callback: EventCallback
    
    Callback that should be removed.
- Returns void
on

Attaches an event callback to either all event types or a specific one. The callback set will be called when an event with the specified type is emitted. It’s not possible to modify the payload of the event sent to Coveo using this listener. Setting type as "*" will trigger the callback for all event types. Returns the "off" function to detach the event callback.
- Parameters
  - type: string
    
    Event’s type.
  - callback: EventCallback
    
    Callback that should be called when the event is emitted.
- Returns Off
updateConfig

Updates Relay’s configuration after its initialization.
- Parameters
  - config: Partial<RelayConfig>
    
    Configuration that should be updated.
- Returns void

Properties

version: string

Current version of the Relay library.

`RelayConfig`

The RelayConfig object defines the configuration options for initializing a Relay instance.

Properties

mode: emit | disabled

Defines the library mode. The available modes are emit and disabled. emit sends analytics events to Coveo to be stored. disabled prevents the emission of events and does not trigger callbacks.

Default: emit
source: string[]

Optionally allows a Relay integration to specify the name(s) of software package(s) relay is being called from. These names will be transmitted with each event, along with Relay’s own version. The recommendation is to specify them using a 'softwarename@softwareversion' string.
token: string

Token to authorize the access to the Event API endpoint.
trackingId: string

The unique identifier of a web property. See What’s a tracking ID?.
url: string

Endpoint defined to communicate with the Event API.