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// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package app
import (
"github.com/mattermost/mattermost-server/model"
"github.com/mattermost/mattermost-server/store"
)
type Option func(a *App)
// By default, the app will use a global configuration file. This allows you to override all or part
// of that configuration.
//
// The override parameter must be a *model.Config, func(*model.Config), or func(*model.Config) *model.Config.
//
// XXX: Most code will not respect this at the moment. (We need to eliminate utils.Cfg first.)
func ConfigOverride(override interface{}) Option {
return func(a *App) {
switch o := override.(type) {
case *model.Config:
a.configOverride = func(*model.Config) *model.Config {
return o
}
case func(*model.Config):
a.configOverride = func(cfg *model.Config) *model.Config {
ret := *cfg
o(&ret)
return &ret
}
case func(*model.Config) *model.Config:
a.configOverride = o
default:
panic("invalid ConfigOverride")
}
}
}
// By default, the app will use the store specified by the configuration. This allows you to
// construct an app with a different store.
//
// The override parameter must be either a store.Store or func(App) store.Store.
func StoreOverride(override interface{}) Option {
return func(a *App) {
switch o := override.(type) {
case store.Store:
a.newStore = func() store.Store {
return o
}
case func(*App) store.Store:
a.newStore = func() store.Store {
return o(a)
}
default:
panic("invalid StoreOverride")
}
}
}
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