18102: Fix flapping lock/unlock.

[arvados.git] / lib / dispatchcloud / container / queue.go

diff --git a/lib/dispatchcloud/container/queue.go b/lib/dispatchcloud/container/queue.go
index 7a2727c1e9532271cb5e7df52f1a383e49f2584f..938ef915f251e4d27e1ea4f714b82f10425d4224 100644 (file)
--- a/lib/dispatchcloud/container/queue.go
+++ b/lib/dispatchcloud/container/queue.go
@@ -31,6 +31,7 @@ type QueueEnt struct {
        // populated.
        Container    arvados.Container    `json:"container"`
        InstanceType arvados.InstanceType `json:"instance_type"`
+       FirstSeenAt  time.Time            `json:"first_seen_at"`
 }
 
 // String implements fmt.Stringer by returning the queued container's
@@ -229,6 +230,7 @@ func (cq *Queue) delEnt(uuid string, state arvados.ContainerState) {
        delete(cq.current, uuid)
 }
 
+// Caller must have lock.
 func (cq *Queue) addEnt(uuid string, ctr arvados.Container) {
        it, err := cq.chooseType(&ctr)
        if err != nil && (ctr.State == arvados.ContainerStateQueued || ctr.State == arvados.ContainerStateLocked) {
@@ -284,7 +286,7 @@ func (cq *Queue) addEnt(uuid string, ctr arvados.Container) {
                "Priority":      ctr.Priority,
                "InstanceType":  it.Name,
        }).Info("adding container to queue")
-       cq.current[uuid] = QueueEnt{Container: ctr, InstanceType: it}
+       cq.current[uuid] = QueueEnt{Container: ctr, InstanceType: it, FirstSeenAt: time.Now()}
 }
 
 // Lock acquires the dispatch lock for the given container.