ExShopifyApp.AppEvents.TokenCache behaviour (ex_shopify_app v1.2.0)

Behaviour for a cached Shopify app events access-token source.

ExShopifyApp.AppEvents resolves the configured implementation via ExShopifyApp.app_events_config/0 and calls fetch/0 on it. The default implementation is ExShopifyApp.AppEvents.TokenServer, a supervised GenServer that serializes token refreshes so concurrent first-callers coalesce onto a single token fetch. Swap it for your own (e.g. a Cachex/ETS TTL cache with non-blocking reads):

config :ex_shopify_app, :app_events,
  token_cache: MyApp.TokenCache

If you supervise your implementation yourself, disable the library's auto-start:

config :ex_shopify_app, :app_events,
  start_token_cache: false

Summary

Types

token()

A Shopify app events access token.

Callbacks

fetch()
fetch(server)

Types

token()

@type token() :: String.t()

A Shopify app events access token.

Callbacks

fetch()

@callback fetch() :: {:ok, token()} | {:error, any()}

fetch(server)

(optional) 
@callback fetch(GenServer.server()) :: {:ok, token()} | {:error, any()}