forked from TrueCloudLab/frostfs-node
84 lines
1.7 KiB
Go
84 lines
1.7 KiB
Go
package timers
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import (
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"context"
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"time"
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"github.com/nspcc-dev/neofs-node/pkg/morph/event"
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"github.com/pkg/errors"
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"go.uber.org/zap"
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)
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type (
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localTimer struct {
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duration time.Duration
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timer *time.Timer
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handler event.Handler
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}
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// Timers is a component for local inner ring timers to produce local events.
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Timers struct {
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log *zap.Logger
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alphabet localTimer
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}
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// Params for timers instance constructor.
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Params struct {
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Log *zap.Logger
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EpochDuration time.Duration
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AlphabetDuration time.Duration
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}
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)
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const (
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// AlphabetTimer is a type for HandlerInfo structure.
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AlphabetTimer = "AlphabetTimer"
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)
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// New creates instance of timers component.
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func New(p *Params) *Timers {
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return &Timers{
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log: p.Log,
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alphabet: localTimer{duration: p.AlphabetDuration},
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}
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}
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// Start runs all available local timers.
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func (t *Timers) Start(ctx context.Context) {
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t.alphabet.timer = time.NewTimer(t.alphabet.duration)
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go t.serve(ctx)
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}
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func (t *Timers) serve(ctx context.Context) {
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for {
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select {
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case <-ctx.Done():
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t.log.Info("timers are getting stopped")
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t.alphabet.timer.Stop()
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return
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case <-t.alphabet.timer.C:
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// reset timer so it can tick once again
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t.alphabet.timer.Reset(t.alphabet.duration)
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// call handler, it should be always set
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t.alphabet.handler(NewAlphabetEmitTick{})
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}
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}
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}
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// RegisterHandler of local timers events.
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func (t *Timers) RegisterHandler(h event.HandlerInfo) error {
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if h.Handler() == nil {
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return errors.New("ir/timers: can't register nil handler")
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}
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switch h.GetType() {
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case AlphabetTimer:
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t.alphabet.handler = h.Handler()
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default:
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return errors.New("ir/timers: unknown handler type")
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}
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return nil
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}
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