X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/663bc76408fc7b1a7a02c0f82aa2bf003c30b78a..96d8b9e1afecccae803ec4b956ada745dbe71d9f:/lib/dispatchcloud/scheduler/scheduler.go

diff --git a/lib/dispatchcloud/scheduler/scheduler.go b/lib/dispatchcloud/scheduler/scheduler.go
index 4644dc4ea4..21510ee091 100644
--- a/lib/dispatchcloud/scheduler/scheduler.go
+++ b/lib/dispatchcloud/scheduler/scheduler.go
@@ -48,6 +48,7 @@ type Scheduler struct {
 
 	last503time    time.Time // last time API responded 503
 	maxConcurrency int       // dynamic container limit (0 = unlimited), see runQueue()
+	maxSupervisors int       // maximum number of "supervisor" containers (these are containers who's main job is to launch other containers, e.g. workflow runners)
 
 	mContainersAllocatedNotStarted   prometheus.Gauge
 	mContainersNotAllocatedOverQuota prometheus.Gauge
@@ -60,7 +61,7 @@ type Scheduler struct {
 //
 // Any given queue and pool should not be used by more than one
 // scheduler at a time.
-func New(ctx context.Context, client *arvados.Client, queue ContainerQueue, pool WorkerPool, reg *prometheus.Registry, staleLockTimeout, queueUpdateInterval time.Duration) *Scheduler {
+func New(ctx context.Context, client *arvados.Client, queue ContainerQueue, pool WorkerPool, reg *prometheus.Registry, staleLockTimeout, queueUpdateInterval time.Duration, maxSupervisors int) *Scheduler {
 	sch := &Scheduler{
 		logger:              ctxlog.FromContext(ctx),
 		client:              client,
@@ -73,6 +74,7 @@ func New(ctx context.Context, client *arvados.Client, queue ContainerQueue, pool
 		stop:                make(chan struct{}),
 		stopped:             make(chan struct{}),
 		uuidOp:              map[string]string{},
+		maxSupervisors:      maxSupervisors,
 	}
 	sch.registerMetrics(reg)
 	return sch