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Rename health check URL parameter to path.

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Also improve documentation.
This commit is contained in:
Timo Reimann 2017-03-14 01:22:08 +01:00 • committed by Emile Vauge
parent f324983946
commit a507cb4835
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GPG key ID: D808B4C167352E59
4 changed files with 39 additions and 33 deletions
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52
healthcheck/healthcheck.go
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@ -25,11 +25,11 @@ func GetHealthCheck() *HealthCheck {
// BackendHealthCheck HealthCheck configuration for a backend
type BackendHealthCheck struct {
URL string
Interval time.Duration
DisabledURLs []*url.URL
Path string
Interval time.Duration
DisabledURLs []*url.URL
requestTimeout time.Duration
lb loadBalancer
lb loadBalancer
}
var launch = false
@ -85,12 +85,12 @@ func (hc *HealthCheck) execute(ctx context.Context, backendID string, backend *B
checkBackend(backend)
ticker := time.NewTicker(backend.Interval)
defer ticker.Stop()
for {
select {
case <-ctx.Done():
log.Debugf("Stopping all current Healthcheck goroutines")
return
case <-ticker.C:
for {
select {
case <-ctx.Done():
log.Debugf("Stopping all current Healthcheck goroutines")
return
case <-ticker.C:
log.Debugf("Refreshing healthcheck for currentBackend %s ", backendID)
checkBackend(backend)
}
@ -98,33 +98,33 @@ func (hc *HealthCheck) execute(ctx context.Context, backendID string, backend *B
}
func checkBackend(currentBackend *BackendHealthCheck) {
enabledURLs := currentBackend.lb.Servers()
var newDisabledURLs []*url.URL
for _, url := range currentBackend.DisabledURLs {
enabledURLs := currentBackend.lb.Servers()
var newDisabledURLs []*url.URL
for _, url := range currentBackend.DisabledURLs {
if checkHealth(url, currentBackend) {
log.Debugf("HealthCheck is up [%s]: Upsert in server list", url.String())
currentBackend.lb.UpsertServer(url, roundrobin.Weight(1))
} else {
log.Debugf("HealthCheck is up [%s]: Upsert in server list", url.String())
currentBackend.lb.UpsertServer(url, roundrobin.Weight(1))
} else {
log.Warnf("HealthCheck is still failing [%s]", url.String())
newDisabledURLs = append(newDisabledURLs, url)
}
}
currentBackend.DisabledURLs = newDisabledURLs
newDisabledURLs = append(newDisabledURLs, url)
}
}
currentBackend.DisabledURLs = newDisabledURLs
for _, url := range enabledURLs {
for _, url := range enabledURLs {
if !checkHealth(url, currentBackend) {
log.Warnf("HealthCheck has failed [%s]: Remove from server list", url.String())
currentBackend.lb.RemoveServer(url)
currentBackend.DisabledURLs = append(currentBackend.DisabledURLs, url)
}
}
currentBackend.lb.RemoveServer(url)
currentBackend.DisabledURLs = append(currentBackend.DisabledURLs, url)
}
}
}
func checkHealth(serverURL *url.URL, backend *BackendHealthCheck) bool {
client := http.Client{
Timeout: backend.requestTimeout,
}
resp, err := client.Get(serverURL.String() + backend.URL)
resp, err := client.Get(serverURL.String() + backend.Path)
if err == nil {
defer resp.Body.Close()
}