use submodule

vendor/github.com/segmentio/kafka-go/rungroup.go

@@ -1,61 +0,0 @@
-package kafka
-
-import (
-	"context"
-	"sync"
-)
-
-// runGroup is a collection of goroutines working together. If any one goroutine
-// stops, then all goroutines will be stopped.
-//
-// A zero runGroup is valid
-type runGroup struct {
-	initOnce sync.Once
-
-	ctx    context.Context
-	cancel context.CancelFunc
-
-	wg sync.WaitGroup
-}
-
-func (r *runGroup) init() {
-	if r.cancel == nil {
-		r.ctx, r.cancel = context.WithCancel(context.Background())
-	}
-}
-
-func (r *runGroup) WithContext(ctx context.Context) *runGroup {
-	ctx, cancel := context.WithCancel(ctx)
-	return &runGroup{
-		ctx:    ctx,
-		cancel: cancel,
-	}
-}
-
-// Wait blocks until all function calls have returned.
-func (r *runGroup) Wait() {
-	r.wg.Wait()
-}
-
-// Stop stops the goroutines and waits for them to complete
-func (r *runGroup) Stop() {
-	r.initOnce.Do(r.init)
-	r.cancel()
-	r.Wait()
-}
-
-// Go calls the given function in a new goroutine.
-//
-// The first call to return a non-nil error cancels the group; its error will be
-// returned by Wait.
-func (r *runGroup) Go(f func(stop <-chan struct{})) {
-	r.initOnce.Do(r.init)
-
-	r.wg.Add(1)
-	go func() {
-		defer r.wg.Done()
-		defer r.cancel()
-
-		f(r.ctx.Done())
-	}()
-}