func TestTimerFast(t *testing.T) {
h := generic.NewSimpleHistogram()
metrics.NewTimer(h).ObserveDuration()
tolerance := 0.050
if want, have := 0.000, h.ApproximateMovingAverage(); math.Abs(want-have) > tolerance {
t.Errorf("want %.3f, have %.3f", want, have)
}
}
func TestTimerSlow(t *testing.T) {
h := generic.NewSimpleHistogram()
timer := metrics.NewTimer(h)
time.Sleep(250 * time.Millisecond)
timer.ObserveDuration()
tolerance := 0.050
if want, have := 0.250, h.ApproximateMovingAverage(); math.Abs(want-have) > tolerance {
t.Errorf("want %.3f, have %.3f", want, have)
}
}
// Release whatever is in the cloned configuration, without changing anything
func (r *Releaser) releaseWithoutUpdate(method, msg string, inst *instance.Instance, kind flux.ReleaseKind, getServices serviceQuery, updateJob func(string, ...interface{})) (err error) {
var res []ReleaseAction
defer func() {
if err == nil {
err = r.execute(inst, res, kind, updateJob)
}
}()
var (
base = r.metrics.StageDuration.With("method", method)
stage *metrics.Timer
)
defer func() { stage.ObserveDuration() }()
stage = metrics.NewTimer(base.With("stage", "fetch_platform_services"))
services, err := getServices(inst)
if err != nil {
return errors.Wrap(err, "fetching platform services")
}
stage.ObserveDuration()
stage = metrics.NewTimer(base.With("stage", "finalize"))
res = append(res, r.releaseActionPrintf(msg))
res = append(res, r.releaseActionClone())
ids := []flux.ServiceID{}
for _, service := range services {
res = append(res, r.releaseActionFindPodController(service.ID))
ids = append(ids, service.ID)
}
res = append(res, r.releaseActionRegradeServices(ids, msg))
return nil
}
func (r *Releaser) releaseImages(method, msg string, inst *instance.Instance, kind flux.ReleaseKind, getServices serviceQuery, getImages imageCollect, updateJob func(string, ...interface{})) (err error) {
var res []ReleaseAction
defer func() {
if err == nil {
err = r.execute(inst, res, kind, updateJob)
}
}()
res = append(res, r.releaseActionPrintf(msg))
var (
base = r.metrics.StageDuration.With("method", method)
stage *metrics.Timer
)
defer func() { stage.ObserveDuration() }()
stage = metrics.NewTimer(base.With("stage", "fetch_platform_services"))
services, err := getServices(inst)
if err != nil {
return errors.Wrap(err, "fetching platform services")
}
stage.ObserveDuration()
stage = metrics.NewTimer(base.With("stage", "calculate_regrades"))
// Each service is running multiple images.
// Each image may need to be upgraded, and trigger a release.
images, err := getImages(inst, services)
if err != nil {
return errors.Wrap(err, "collecting available images to calculate regrades")
}
regradeMap := map[flux.ServiceID][]containerRegrade{}
for _, service := range services {
containers, err := service.ContainersOrError()
if err != nil {
res = append(res, r.releaseActionPrintf("service %s does not have images associated: %s", service.ID, err))
continue
}
for _, container := range containers {
currentImageID := flux.ParseImageID(container.Image)
latestImage := images.LatestImage(currentImageID.Repository())
if latestImage == nil {
continue
}
if currentImageID == latestImage.ID {
res = append(res, r.releaseActionPrintf("Service %s image %s is already the latest one; skipping.", service.ID, currentImageID))
continue
}
regradeMap[service.ID] = append(regradeMap[service.ID], containerRegrade{
container: container.Name,
current: currentImageID,
target: latestImage.ID,
})
}
}
if len(regradeMap) <= 0 {
res = append(res, r.releaseActionPrintf("All selected services are running the requested images. Nothing to do."))
return nil
}
stage.ObserveDuration()
stage = metrics.NewTimer(base.With("stage", "finalize"))
// We have identified at least 1 release that needs to occur. Releasing
// means cloning the repo, changing the resource file(s), committing and
// pushing, and then making the release(s) to the platform.
res = append(res, r.releaseActionClone())
for service, regrades := range regradeMap {
res = append(res, r.releaseActionUpdatePodController(service, regrades))
}
res = append(res, r.releaseActionCommitAndPush(msg))
var servicesToRegrade []flux.ServiceID
for service := range regradeMap {
servicesToRegrade = append(servicesToRegrade, service)
}
res = append(res, r.releaseActionRegradeServices(servicesToRegrade, msg))
return nil
}