focalboard/mattermost-plugin/server/boards/configuration.go
Miguel de la Cruz 4b0fb92fba
Multi product architecture (#3381)
- provides support for compiling Boards directly into the Mattermost suite server
- a ServicesAPI interface replaces the PluginAPI to allow for implementations coming from pluginAPI and suite server.
- a new product package provides a place to register Boards as a suite product and handles life-cycle events
- a new boards package replaces much of the mattermost-plugin logic, allowing this to be shared between plugin and product
- Boards now uses module workspaces; run make setup-go-work
2022-07-18 13:21:57 -04:00

104 lines
3.8 KiB
Go

package boards
import (
"reflect"
)
// configuration captures the plugin's external configuration as exposed in the Mattermost server
// configuration, as well as values computed from the configuration. Any public fields will be
// deserialized from the Mattermost server configuration in OnConfigurationChange.
//
// As plugins are inherently concurrent (hooks being called asynchronously), and the plugin
// configuration can change at any time, access to the configuration must be synchronized. The
// strategy used in this plugin is to guard a pointer to the configuration, and clone the entire
// struct whenever it changes. You may replace this with whatever strategy you choose.
//
// If you add non-reference types to your configuration struct, be sure to rewrite Clone as a deep
// copy appropriate for your types.
type configuration struct {
EnablePublicSharedBoards bool
}
// Clone shallow copies the configuration. Your implementation may require a deep copy if
// your configuration has reference types.
func (c *configuration) Clone() *configuration {
var clone = *c
return &clone
}
// getConfiguration retrieves the active configuration under lock, making it safe to use
// concurrently. The active configuration may change underneath the client of this method, but
// the struct returned by this API call is considered immutable.
func (b *BoardsApp) getConfiguration() *configuration {
b.configurationLock.RLock()
defer b.configurationLock.RUnlock()
if b.configuration == nil {
return &configuration{}
}
return b.configuration
}
// setConfiguration replaces the active configuration under lock.
//
// Do not call setConfiguration while holding the configurationLock, as sync.Mutex is not
// reentrant. In particular, avoid using the plugin API entirely, as this may in turn trigger a
// hook back into the plugin. If that hook attempts to acquire this lock, a deadlock may occur.
//
// This method panics if setConfiguration is called with the existing configuration. This almost
// certainly means that the configuration was modified without being cloned and may result in
// an unsafe access.
func (b *BoardsApp) setConfiguration(configuration *configuration) {
b.configurationLock.Lock()
defer b.configurationLock.Unlock()
if configuration != nil && b.configuration == configuration {
// Ignore assignment if the configuration struct is empty. Go will optimize the
// allocation for same to point at the same memory address, breaking the check
// above.
if reflect.ValueOf(*configuration).NumField() == 0 {
return
}
panic("setConfiguration called with the existing configuration")
}
b.configuration = configuration
}
// OnConfigurationChange is invoked when configuration changes may have been made.
func (b *BoardsApp) OnConfigurationChange() error {
// Have we been setup by OnActivate?
if b.server == nil {
return nil
}
mmconfig := b.servicesAPI.GetConfig()
// handle plugin configuration settings
enableShareBoards := false
if mmconfig.PluginSettings.Plugins[PluginName][SharedBoardsName] == true {
enableShareBoards = true
}
configuration := &configuration{
EnablePublicSharedBoards: enableShareBoards,
}
b.setConfiguration(configuration)
b.server.Config().EnablePublicSharedBoards = enableShareBoards
// handle feature flags
b.server.Config().FeatureFlags = parseFeatureFlags(mmconfig.FeatureFlags.ToMap())
// handle Data Retention settings
enableBoardsDeletion := false
if mmconfig.DataRetentionSettings.EnableBoardsDeletion != nil {
enableBoardsDeletion = true
}
b.server.Config().EnableDataRetention = enableBoardsDeletion
b.server.Config().DataRetentionDays = *mmconfig.DataRetentionSettings.BoardsRetentionDays
b.server.Config().TeammateNameDisplay = *mmconfig.TeamSettings.TeammateNameDisplay
b.server.UpdateAppConfig()
b.wsPluginAdapter.BroadcastConfigChange(*b.server.App().GetClientConfig())
return nil
}