89 lines
1.9 KiB
Go
89 lines
1.9 KiB
Go
package cmd
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import (
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"context"
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"fmt"
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"runtime"
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"github.com/spf13/cobra"
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"github.com/christianselig/apollo-backend/internal/cmdutil"
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"github.com/christianselig/apollo-backend/internal/worker"
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)
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var (
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queues = map[string]worker.NewWorkerFn{
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"notifications": worker.NewNotificationsWorker,
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"stuck-notifications": worker.NewStuckNotificationsWorker,
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"subreddits": worker.NewSubredditsWorker,
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"trending": worker.NewTrendingWorker,
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"users": worker.NewUsersWorker,
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}
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)
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func WorkerCmd(ctx context.Context) *cobra.Command {
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var multiplier int
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var queueID string
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cmd := &cobra.Command{
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Use: "worker",
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Args: cobra.ExactArgs(0),
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Short: "Work through job queues.",
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RunE: func(cmd *cobra.Command, args []string) error {
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if queueID == "" {
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return fmt.Errorf("need a queue to work on")
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}
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logger := cmdutil.NewLogrusLogger(false)
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tag := fmt.Sprintf("worker:%s", queueID)
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statsd, err := cmdutil.NewStatsdClient(tag)
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if err != nil {
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return err
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}
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defer statsd.Close()
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consumers := runtime.NumCPU() * multiplier
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poolSize := multiplier / 4
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db, err := cmdutil.NewDatabasePool(ctx, poolSize)
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if err != nil {
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return err
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}
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defer db.Close()
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redis, err := cmdutil.NewRedisClient(ctx)
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if err != nil {
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return err
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}
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defer redis.Close()
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queue, err := cmdutil.NewQueueClient(logger, redis, "worker")
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if err != nil {
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return err
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}
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workerFn, ok := queues[queueID]
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if !ok {
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return fmt.Errorf("invalid queue: %s", queueID)
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}
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worker := workerFn(ctx, logger, statsd, db, redis, queue, consumers)
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if err := worker.Start(); err != nil {
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return err
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}
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<-ctx.Done()
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worker.Stop()
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return nil
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},
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}
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cmd.Flags().IntVar(&multiplier, "multiplier", 12, "The multiplier (by CPUs) to run")
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cmd.Flags().StringVar(&queueID, "queue", "", "The queue to work on")
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return cmd
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}
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