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Metrics router fix

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Co-authored-by: Michael <michael.matur@gmail.com>
Co-authored-by: Romain <rtribotte@users.noreply.github.com>
This commit is contained in:
Tom Moulard 2021-09-15 17:26:06 +02:00 committed by GitHub
parent a72d124551
commit 6e28db513c
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GPG key ID: 4AEE18F83AFDEB23
4 changed files with 39 additions and 16 deletions
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7
integration/simple_test.go
View file

@ -333,6 +333,8 @@ func (s *SimpleSuite) TestMetricsPrometheusTwoRoutersOneService(c *check.C) {
err = try.GetRequest("http://127.0.0.1:8000/whoami2", 1*time.Second, try.StatusCodeIs(http.StatusOK))
c.Assert(err, checker.IsNil)
// adding a loop to test if metrics are not deleted
for i := 0; i < 10; i++ {
request, err := http.NewRequest(http.MethodGet, "http://127.0.0.1:8080/metrics", nil)
c.Assert(err, checker.IsNil)
@ -344,10 +346,11 @@ func (s *SimpleSuite) TestMetricsPrometheusTwoRoutersOneService(c *check.C) {
c.Assert(err, checker.IsNil)
// Reqs count of 1 for both routers
c.Assert(string(body), checker.Contains, "traefik_router_requests_total{code=\"200\",method=\"GET\",protocol=\"http\",router=\"router1@docker\",service=\"whoami1-integrationtestbase\"} 1")
c.Assert(string(body), checker.Contains, "traefik_router_requests_total{code=\"200\",method=\"GET\",protocol=\"http\",router=\"router2@docker\",service=\"whoami1-integrationtestbase\"} 1")
c.Assert(string(body), checker.Contains, "traefik_router_requests_total{code=\"200\",method=\"GET\",protocol=\"http\",router=\"router1@docker\",service=\"whoami1-integrationtestbase@docker\"} 1")
c.Assert(string(body), checker.Contains, "traefik_router_requests_total{code=\"200\",method=\"GET\",protocol=\"http\",router=\"router2@docker\",service=\"whoami1-integrationtestbase@docker\"} 1")
// Reqs count of 2 for service behind both routers
c.Assert(string(body), checker.Contains, "traefik_service_requests_total{code=\"200\",method=\"GET\",protocol=\"http\",service=\"whoami1-integrationtestbase@docker\"} 2")
}
}
func (s *SimpleSuite) TestMultipleProviderSameBackendName(c *check.C) {

11
pkg/metrics/prometheus.go
View file

@ -380,6 +380,12 @@ func (ps *prometheusState) isOutdated(collector *collector) bool {
return true
}
if routerName, ok := labels["router"]; ok {
if !ps.dynamicConfig.hasRouter(routerName) {
return true
}
}
if serviceName, ok := labels["service"]; ok {
if !ps.dynamicConfig.hasService(serviceName) {
return true
@ -420,6 +426,11 @@ func (d *dynamicConfig) hasService(serviceName string) bool {
return ok
}
func (d *dynamicConfig) hasRouter(routerName string) bool {
_, ok := d.routers[routerName]
return ok
}
func (d *dynamicConfig) hasServerURL(serviceName, serverURL string) bool {
if service, hasService := d.services[serviceName]; hasService {
_, ok := service[serverURL]

15
pkg/metrics/prometheus_test.go
View file

@ -364,7 +364,7 @@ func TestPrometheusMetricRemoval(t *testing.T) {
// Reset state of global promState.
defer promState.reset()
prometheusRegistry := RegisterPrometheus(context.Background(), &types.Prometheus{AddEntryPointsLabels: true, AddServicesLabels: true})
prometheusRegistry := RegisterPrometheus(context.Background(), &types.Prometheus{AddEntryPointsLabels: true, AddServicesLabels: true, AddRoutersLabels: true})
defer promRegistry.Unregister(promState)
conf := dynamic.Configuration{
@ -401,11 +401,14 @@ func TestPrometheusMetricRemoval(t *testing.T) {
ServiceServerUpGauge().
With("service", "service1", "url", "http://localhost:9999").
Set(1)
delayForTrackingCompletion()
prometheusRegistry.
RouterReqsCounter().
With("router", "router2", "service", "service2", "code", strconv.Itoa(http.StatusOK), "method", http.MethodGet, "protocol", "http").
Add(1)
assertMetricsExist(t, mustScrape(), entryPointReqsTotalName, serviceReqsTotalName, serviceServerUpName)
assertMetricsAbsent(t, mustScrape(), entryPointReqsTotalName, serviceReqsTotalName, serviceServerUpName)
assertMetricsAbsent(t, mustScrape(), routerReqsTotalName, routerReqDurationName, routerOpenConnsName)
// To verify that metrics belonging to active configurations are not removed
// here the counter examples.
@ -413,11 +416,17 @@ func TestPrometheusMetricRemoval(t *testing.T) {
EntryPointReqsCounter().
With("entrypoint", "entrypoint1", "code", strconv.Itoa(http.StatusOK), "method", http.MethodGet, "protocol", "http").
Add(1)
prometheusRegistry.
RouterReqsCounter().
With("router", "foo@providerName", "service", "bar@providerName", "code", strconv.Itoa(http.StatusOK), "method", http.MethodGet, "protocol", "http").
Add(1)
delayForTrackingCompletion()
assertMetricsExist(t, mustScrape(), entryPointReqsTotalName)
assertMetricsExist(t, mustScrape(), entryPointReqsTotalName)
assertMetricsExist(t, mustScrape(), routerReqsTotalName)
assertMetricsExist(t, mustScrape(), routerReqsTotalName)
}
func TestPrometheusRemovedMetricsReset(t *testing.T) {

2
pkg/server/router/router.go
View file

@ -184,7 +184,7 @@ func (m *Manager) buildHTTPHandler(ctx context.Context, router *runtime.RouterIn
chain := alice.New()
if m.metricsRegistry != nil && m.metricsRegistry.IsRouterEnabled() {
chain = chain.Append(metricsMiddle.WrapRouterHandler(ctx, m.metricsRegistry, routerName, router.Service))
chain = chain.Append(metricsMiddle.WrapRouterHandler(ctx, m.metricsRegistry, routerName, provider.GetQualifiedName(ctx, router.Service)))
}
return chain.Extend(*mHandler).Append(tHandler).Then(sHandler)