hs-test: container logging improvements

- Reduced the amount of error messages while obtaining container logs
  when a test fails by keeping track of started containers. NginxPerf
  tests still have those error messages, because wrk/ab containers shut
  themselves down before the test ends.

Type: test

Change-Id: I40a193345e5b46aec1834774f23aebc822eee885
Signed-off-by: Adrian Villin <avillin@cisco.com>

extras/hs-test/container.go

@@ -162,7 +162,7 @@ func (c *Container) create() error {
 }
 
 func (c *Container) allocateCpus() {
-	c.suite.containerCount += 1
+	c.suite.startedContainers = append(c.suite.startedContainers, c)
 	c.allocatedCpus = c.suite.AllocateCpus()
 	c.suite.log("Allocated CPUs " + fmt.Sprint(c.allocatedCpus) + " to container " + c.name)
 }

extras/hs-test/hst_suite.go

@@ -31,7 +31,7 @@ var vppSourceFileDir = flag.String("vppsrc", "", "vpp source file directory")
 
 type HstSuite struct {
 	containers        map[string]*Container
-	containerCount   int
+	startedContainers []*Container
 	volumes           []string
 	netConfigs        []NetConfig
 	netInterfaces     map[string]*NetInterface
@@ -62,7 +62,7 @@ func (s *HstSuite) SetupSuite() {
 }
 
 func (s *HstSuite) AllocateCpus() []int {
-	cpuCtx, err := s.cpuAllocator.Allocate(s.containerCount, s.cpuPerVpp)
+	cpuCtx, err := s.cpuAllocator.Allocate(len(s.startedContainers), s.cpuPerVpp)
 	s.assertNil(err)
 	s.AddCpuContext(cpuCtx)
 	return cpuCtx.cpus
@@ -96,7 +96,7 @@ func (s *HstSuite) skipIfUnconfiguring() {
 
 func (s *HstSuite) SetupTest() {
 	s.log("Test Setup")
-	s.containerCount = 0
+	s.startedContainers = s.startedContainers[:0]
 	s.skipIfUnconfiguring()
 	s.setupVolumes()
 	s.setupContainers()
@@ -152,11 +152,11 @@ func (s *HstSuite) logVppInstance(container *Container, maxLines int) {
 }
 
 func (s *HstSuite) hstFail() {
-	s.log("Containers: " + fmt.Sprint(s.containers))
+	for _, container := range s.startedContainers {
-	for _, container := range s.containers {
 		out, err := container.log(20)
 		if err != nil {
 			s.log("An error occured while obtaining '" + container.name + "' container logs: " + fmt.Sprint(err))
+			s.log("The container might not be running - check logs in " + container.getLogDirPath())
 			continue
 		}
 		s.log("\nvvvvvvvvvvvvvvv " +

extras/hs-test/http_test.go

@@ -257,7 +257,6 @@ func runNginxPerf(s *NoTopoSuite, mode, ab_or_wrk string) error {
 		args += " -r"
 		args += " http://" + serverAddress + ":80/64B.json"
 		abCont.extraRunningArgs = args
-		time.Sleep(time.Second * 10)
 		o, err := abCont.combinedOutput()
 		rps := parseString(o, "Requests per second:")
 		s.log(rps)