538 lines
9.9 KiB
Go
538 lines
9.9 KiB
Go
package nomad
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import (
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"testing"
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"time"
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"github.com/hashicorp/nomad/nomad/structs"
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)
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var (
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defaultSched = []string{
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structs.JobTypeService,
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structs.JobTypeBatch,
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}
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)
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func testBroker(t *testing.T, timeout time.Duration) *EvalBroker {
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if timeout == 0 {
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timeout = 5 * time.Second
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}
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b, err := NewEvalBroker(timeout)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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return b
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}
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func TestEvalBroker_Enqueue_Dequeue_Nack_Ack(t *testing.T) {
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b := testBroker(t, 0)
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// Enqueue, but broker is disabled!
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eval := mockEval()
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err := b.Enqueue(eval)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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// Verify nothing was done
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stats := b.Stats()
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if stats.TotalReady != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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if b.Enabled() {
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t.Fatalf("should not be enabled")
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}
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// Enable the broker, and enqueue
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b.SetEnabled(true)
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err = b.Enqueue(eval)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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// Double enqueue is a no-op
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err = b.Enqueue(eval)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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if !b.Enabled() {
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t.Fatalf("should be enabled")
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}
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// Verify enqueue is done
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stats = b.Stats()
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if stats.TotalReady != 1 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.ByScheduler[eval.Type].Ready != 1 {
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t.Fatalf("bad: %#v", stats)
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}
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// Dequeue should work
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out, err := b.Dequeue(defaultSched, time.Second)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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if out != eval {
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t.Fatalf("bad : %#v", out)
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}
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if !b.Outstanding(out.ID) {
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t.Fatalf("should be outstanding")
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}
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// Check the stats
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stats = b.Stats()
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if stats.TotalReady != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.TotalUnacked != 1 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.ByScheduler[eval.Type].Ready != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.ByScheduler[eval.Type].Unacked != 1 {
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t.Fatalf("bad: %#v", stats)
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}
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// Nack back into the queue
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err = b.Nack(eval.ID)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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if b.Outstanding(out.ID) {
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t.Fatalf("should not be outstanding")
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}
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// Check the stats
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stats = b.Stats()
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if stats.TotalReady != 1 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.TotalUnacked != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.ByScheduler[eval.Type].Ready != 1 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.ByScheduler[eval.Type].Unacked != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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// Dequeue should work again
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out2, err := b.Dequeue(defaultSched, time.Second)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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if out2 != eval {
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t.Fatalf("bad : %#v", out2)
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}
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if !b.Outstanding(out.ID) {
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t.Fatalf("should be outstanding")
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}
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// Ack finally
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err = b.Ack(eval.ID)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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if b.Outstanding(out.ID) {
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t.Fatalf("should not be outstanding")
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}
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// Check the stats
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stats = b.Stats()
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if stats.TotalReady != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.TotalUnacked != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.ByScheduler[eval.Type].Ready != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.ByScheduler[eval.Type].Unacked != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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}
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func TestEvalBroker_Serialize_DuplicateJobID(t *testing.T) {
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b := testBroker(t, 0)
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b.SetEnabled(true)
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eval := mockEval()
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err := b.Enqueue(eval)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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eval2 := mockEval()
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eval2.JobID = eval.JobID
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eval2.CreateIndex = eval.CreateIndex + 1
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err = b.Enqueue(eval2)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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eval3 := mockEval()
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eval3.JobID = eval.JobID
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eval3.CreateIndex = eval.CreateIndex + 2
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err = b.Enqueue(eval3)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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stats := b.Stats()
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if stats.TotalReady != 1 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.TotalBlocked != 2 {
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t.Fatalf("bad: %#v", stats)
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}
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// Dequeue should work
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out, err := b.Dequeue(defaultSched, time.Second)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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if out != eval {
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t.Fatalf("bad : %#v", out)
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}
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// Check the stats
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stats = b.Stats()
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if stats.TotalReady != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.TotalUnacked != 1 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.TotalBlocked != 2 {
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t.Fatalf("bad: %#v", stats)
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}
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// Ack out
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err = b.Ack(eval.ID)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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// Check the stats
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stats = b.Stats()
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if stats.TotalReady != 1 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.TotalUnacked != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.TotalBlocked != 1 {
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t.Fatalf("bad: %#v", stats)
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}
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// Dequeue should work
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out, err = b.Dequeue(defaultSched, time.Second)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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if out != eval2 {
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t.Fatalf("bad : %#v", out)
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}
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// Check the stats
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stats = b.Stats()
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if stats.TotalReady != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.TotalUnacked != 1 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.TotalBlocked != 1 {
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t.Fatalf("bad: %#v", stats)
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}
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// Ack out
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err = b.Ack(eval2.ID)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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// Check the stats
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stats = b.Stats()
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if stats.TotalReady != 1 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.TotalUnacked != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.TotalBlocked != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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// Dequeue should work
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out, err = b.Dequeue(defaultSched, time.Second)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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if out != eval3 {
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t.Fatalf("bad : %#v", out)
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}
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// Check the stats
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stats = b.Stats()
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if stats.TotalReady != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.TotalUnacked != 1 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.TotalBlocked != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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// Ack out
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err = b.Ack(eval3.ID)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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// Check the stats
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stats = b.Stats()
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if stats.TotalReady != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.TotalUnacked != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.TotalBlocked != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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}
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func TestEvalBroker_Enqueue_Disable(t *testing.T) {
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b := testBroker(t, 0)
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// Enqueue
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eval := mockEval()
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b.SetEnabled(true)
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err := b.Enqueue(eval)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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// Flush via SetEnabled
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b.SetEnabled(false)
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// Check the stats
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stats := b.Stats()
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if stats.TotalReady != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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if stats.TotalUnacked != 0 {
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t.Fatalf("bad: %#v", stats)
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}
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if _, ok := stats.ByScheduler[eval.Type]; ok {
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t.Fatalf("bad: %#v", stats)
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}
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}
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func TestEvalBroker_Dequeue_Timeout(t *testing.T) {
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b := testBroker(t, 0)
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b.SetEnabled(true)
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start := time.Now()
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out, err := b.Dequeue(defaultSched, 5*time.Millisecond)
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end := time.Now()
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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if out != nil {
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t.Fatalf("unexpected: %#v", out)
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}
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if diff := end.Sub(start); diff < 5*time.Millisecond {
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t.Fatalf("bad: %#v", diff)
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}
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}
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// Ensure higher priority dequeued first
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func TestEvalBroker_Dequeue_Priority(t *testing.T) {
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b := testBroker(t, 0)
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b.SetEnabled(true)
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eval1 := mockEval()
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eval1.Priority = 10
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b.Enqueue(eval1)
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eval2 := mockEval()
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eval2.Priority = 30
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b.Enqueue(eval2)
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eval3 := mockEval()
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eval3.Priority = 20
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b.Enqueue(eval3)
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out1, _ := b.Dequeue(defaultSched, time.Second)
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if out1 != eval2 {
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t.Fatalf("bad: %#v", out1)
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}
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out2, _ := b.Dequeue(defaultSched, time.Second)
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if out2 != eval3 {
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t.Fatalf("bad: %#v", out2)
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}
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out3, _ := b.Dequeue(defaultSched, time.Second)
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if out3 != eval1 {
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t.Fatalf("bad: %#v", out3)
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}
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}
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// Ensure FIFO at fixed priority
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func TestEvalBroker_Dequeue_FIFO(t *testing.T) {
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b := testBroker(t, 0)
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b.SetEnabled(true)
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NUM := 100
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for i := 0; i < NUM; i++ {
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eval1 := mockEval()
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eval1.CreateIndex = uint64(i)
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eval1.ModifyIndex = uint64(i)
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b.Enqueue(eval1)
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}
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for i := 0; i < NUM; i++ {
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out1, _ := b.Dequeue(defaultSched, time.Second)
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if out1.CreateIndex != uint64(i) {
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t.Fatalf("bad: %d %#v", i, out1)
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}
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}
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}
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// Ensure fairness between schedulers
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func TestEvalBroker_Dequeue_Fairness(t *testing.T) {
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b := testBroker(t, 0)
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b.SetEnabled(true)
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NUM := 100
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for i := 0; i < NUM; i++ {
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eval1 := mockEval()
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if i < (NUM / 2) {
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eval1.Type = structs.JobTypeService
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} else {
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eval1.Type = structs.JobTypeBatch
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}
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b.Enqueue(eval1)
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}
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counter := 0
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for i := 0; i < NUM; i++ {
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out1, _ := b.Dequeue(defaultSched, time.Second)
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switch out1.Type {
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case structs.JobTypeService:
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if counter < 0 {
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counter = 0
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}
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counter += 1
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case structs.JobTypeBatch:
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if counter > 0 {
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counter = 0
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}
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counter -= 1
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}
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// This will fail randomly at times. It is very hard to
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// test deterministically that its acting randomly.
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if counter >= 25 || counter <= -25 {
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t.Fatalf("unlikely sequence: %d", counter)
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}
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}
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}
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// Ensure we get unblocked
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func TestEvalBroker_Dequeue_Blocked(t *testing.T) {
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b := testBroker(t, 0)
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b.SetEnabled(true)
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// Start with a blocked dequeue
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outCh := make(chan *structs.Evaluation, 1)
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go func() {
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start := time.Now()
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out, err := b.Dequeue(defaultSched, time.Second)
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end := time.Now()
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outCh <- out
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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if d := end.Sub(start); d < 5*time.Millisecond {
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t.Fatalf("bad: %v", d)
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}
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}()
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// Wait for a bit
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time.Sleep(5 * time.Millisecond)
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// Enqueue
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eval := mockEval()
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err := b.Enqueue(eval)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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// Ensure dequeue
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select {
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case out := <-outCh:
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if out != eval {
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t.Fatalf("bad: %v", out)
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}
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case <-time.After(time.Second):
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t.Fatalf("timeout")
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}
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}
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// Ensure we nack in a timely manner
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func TestEvalBroker_Nack_Timeout(t *testing.T) {
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b := testBroker(t, 5*time.Millisecond)
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b.SetEnabled(true)
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// Enqueue
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eval := mockEval()
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err := b.Enqueue(eval)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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// Dequeue
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out, err := b.Dequeue(defaultSched, time.Second)
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start := time.Now()
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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if out != eval {
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t.Fatalf("bad: %v", out)
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}
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// Dequeue, should block on Nack timer
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out, err = b.Dequeue(defaultSched, time.Second)
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end := time.Now()
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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if out != eval {
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t.Fatalf("bad: %v", out)
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}
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// Check the nack timer
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if diff := end.Sub(start); diff < 5*time.Millisecond {
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t.Fatalf("bad: %#v", diff)
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}
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}
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