87 lines
1.7 KiB
Go
87 lines
1.7 KiB
Go
package subscriptions
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import (
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"fmt"
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"sync"
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"time"
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"github.com/ethereum/go-ethereum/log"
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gocommon "github.com/status-im/status-go/common"
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)
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type Subscriptions struct {
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mu sync.Mutex
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subs map[SubscriptionID]*Subscription
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checkPeriod time.Duration
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log log.Logger
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}
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func NewSubscriptions(period time.Duration) *Subscriptions {
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return &Subscriptions{
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subs: make(map[SubscriptionID]*Subscription),
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checkPeriod: period,
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log: log.New("package", "status-go/services/subsriptions.Subscriptions"),
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}
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}
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func (s *Subscriptions) Create(namespace string, filter filter) (SubscriptionID, error) {
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s.mu.Lock()
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defer s.mu.Unlock()
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newSub := NewSubscription(namespace, filter)
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go func() {
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defer gocommon.LogOnPanic()
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err := newSub.Start(s.checkPeriod)
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if err != nil {
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s.log.Error("error while starting subscription", "err", err)
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}
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}()
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s.subs[newSub.id] = newSub
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return newSub.id, nil
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}
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func (s *Subscriptions) Remove(id SubscriptionID) error {
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s.mu.Lock()
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defer s.mu.Unlock()
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found, err := s.stopSubscription(id, true)
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if found {
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delete(s.subs, id)
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}
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return err
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}
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func (s *Subscriptions) removeAll() error {
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s.mu.Lock()
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defer s.mu.Unlock()
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unsubscribeErrors := make(map[SubscriptionID]error)
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for id := range s.subs {
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_, err := s.stopSubscription(id, false)
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if err != nil {
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unsubscribeErrors[id] = err
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}
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}
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s.subs = make(map[SubscriptionID]*Subscription)
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if len(unsubscribeErrors) > 0 {
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return fmt.Errorf("errors while cleaning up subscriptions: %+v", unsubscribeErrors)
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}
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return nil
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}
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func (s *Subscriptions) stopSubscription(id SubscriptionID, uninstall bool) (bool, error) {
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sub, found := s.subs[id]
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if !found {
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return false, nil
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}
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return true, sub.Stop(uninstall)
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}
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