mirror of
https://github.com/pocket-id/pocket-id.git
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113 lines
3.2 KiB
Go
113 lines
3.2 KiB
Go
package appconfig
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import (
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"context"
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"fmt"
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"log/slog"
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"time"
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"github.com/italypaleale/francis/actor"
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"github.com/pocket-id/pocket-id/backend/internal/common"
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)
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// The AppConfig singleton actor maintains the dynamic configuration for the Pocket ID cluster
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// Instances of Pocket ID should bootstrap the AppConfig's actor upon startup to ensure the config is loaded (and migrated if needed)
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// After startup, Peek can be used for read-only operations such as retrieving the config or listing it
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// AppConfigActorType is the actor type for the AppConfig actor
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const AppConfigActorType = "AppConfig"
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// appConfigActor is a singleton actor that manages the dynamic app configuration
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type appConfigActor struct {
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log *slog.Logger
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client actor.Client[*AppConfigModel]
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}
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// appConfigActorBootstrap is the type for the payload of the init method
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type appConfigActorBootstrap struct {
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LegacyConfig map[string]string
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}
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// NewAppConfigActor allocates a new AppConfig actor
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// It satisfies actor.Factory
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func NewAppConfigActor(actorID string, service *actor.Service) actor.Actor {
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log := slog.
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With(
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slog.String("scope", "actor"),
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slog.String("actorType", AppConfigActorType),
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slog.String("actorID", actorID),
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)
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log.Info("AppConfig actor created")
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return &appConfigActor{
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log: log,
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client: actor.NewActorClient[*AppConfigModel](AppConfigActorType, actorID, service),
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}
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}
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// Bootstrap implements actor.ActorBootstrapper for the singleton actor
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func (a *appConfigActor) Bootstrap(parentCtx context.Context, data actor.Envelope) error {
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// Load the actor state
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ctx, cancel := context.WithTimeout(parentCtx, 10*time.Second)
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defer cancel()
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state, err := a.client.GetState(ctx)
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if err != nil {
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return fmt.Errorf("error retrieving actor state: %w", err)
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}
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// If we already have a state, nothing else to do
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if state != nil {
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return nil
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}
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// Check if the request data contains legacy config to init from
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if data != nil {
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payload := appConfigActorBootstrap{}
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err = data.Decode(&payload)
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if err != nil {
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return fmt.Errorf("request body is not valid for method 'init': %w", err)
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}
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if len(payload.LegacyConfig) > 0 {
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state, err = fromLegacyConfig(payload.LegacyConfig)
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if err != nil {
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return fmt.Errorf("request body is not valid for method 'init': LegacyConfig property could not be parsed: %w", err)
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}
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}
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}
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// If we still have no state, generate a new default config
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if state == nil {
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state = getDefaultConfig()
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}
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// Save the updated state
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ctx, cancel = context.WithTimeout(parentCtx, 10*time.Second)
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defer cancel()
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err = a.client.SetState(ctx, state, nil)
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if err != nil {
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return fmt.Errorf("error saving actor state: %w", err)
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}
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return nil
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}
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func (a *appConfigActor) Peek(parentCtx context.Context, method string, data actor.Envelope) (any, error) {
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// Only supported method is "get"
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if method != "get" {
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return nil, common.ErrUnsupportedActorMethod{Method: method}
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}
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// Load the actor state
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ctx, cancel := context.WithTimeout(parentCtx, 10*time.Second)
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defer cancel()
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state, err := a.client.GetState(ctx)
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if err != nil {
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return nil, fmt.Errorf("error retrieving actor state: %w", err)
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}
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// Return the state
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return state, nil
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}
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