67 lines
1.0 KiB
Go
67 lines
1.0 KiB
Go
package scheduler
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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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)
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type Scheduler struct {
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logger *slog.Logger
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}
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func NewScheduler(logger *slog.Logger) *Scheduler {
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return &Scheduler{
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logger: logger,
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}
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}
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func (s *Scheduler) Execute(ctx context.Context) error {
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acquiredLeader, err := s.acquireLeader(ctx)
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if err != nil {
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return err
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}
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if !acquiredLeader {
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s.logger.Info("gracefully shutting down non-elected scheduler")
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return nil
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}
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for {
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select {
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case <-ctx.Done():
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s.logger.Info("gracefully shutting down elected scheduler")
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return nil
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default:
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if err := s.process(ctx); err != nil {
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return fmt.Errorf("scheduler failed: %w", err)
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}
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}
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}
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}
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func (s *Scheduler) acquireLeader(ctx context.Context) (bool, error) {
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for {
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select {
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case <-ctx.Done():
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return false, nil
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default:
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// Attempt to acquire leader
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//
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return true, nil
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}
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}
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}
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func (s *Scheduler) process(ctx context.Context) error {
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s.logger.Debug("scheduler processing items")
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// FIXME: simulate work
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time.Sleep(time.Second * 2)
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return nil
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}
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