prometheus/web/web_test.go

184 lines
4.9 KiB
Go

// Copyright 2016 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package web
import (
"net/http"
"net/http/httptest"
"net/url"
"testing"
"time"
)
func TestGlobalURL(t *testing.T) {
opts := &Options{
ListenAddress: ":9090",
ExternalURL: &url.URL{
Scheme: "https",
Host: "externalhost:80",
Path: "/path/prefix",
},
}
tests := []struct {
inURL string
outURL string
}{
{
// Nothing should change if the input URL is not on localhost, even if the port is our listening port.
inURL: "http://somehost:9090/metrics",
outURL: "http://somehost:9090/metrics",
},
{
// Port and host should change if target is on localhost and port is our listening port.
inURL: "http://localhost:9090/metrics",
outURL: "https://externalhost:80/metrics",
},
{
// Only the host should change if the port is not our listening port, but the host is localhost.
inURL: "http://localhost:8000/metrics",
outURL: "http://externalhost:8000/metrics",
},
{
// Alternative localhost representations should also work.
inURL: "http://127.0.0.1:9090/metrics",
outURL: "https://externalhost:80/metrics",
},
}
for i, test := range tests {
inURL, err := url.Parse(test.inURL)
if err != nil {
t.Fatalf("%d. Error parsing input URL: %s", i, err)
}
globalURL := tmplFuncs("", opts)["globalURL"].(func(u *url.URL) *url.URL)
outURL := globalURL(inURL)
if outURL.String() != test.outURL {
t.Fatalf("%d. got %s, want %s", i, outURL.String(), test.outURL)
}
}
}
func TestReadyAndHealthy(t *testing.T) {
opts := &Options{
ListenAddress: ":9090",
ReadTimeout: 30 * time.Second,
MaxConnections: 512,
Context: nil,
Storage: nil,
QueryEngine: nil,
TargetManager: nil,
RuleManager: nil,
Notifier: nil,
RoutePrefix: "/",
MetricsPath: "/metrics/",
}
opts.Flags = map[string]string{}
webHandler := New(opts)
go webHandler.Run()
// Give some time for the web goroutine to run since we need the server
// to be up before starting tests.
time.Sleep(5 * time.Second)
resp, err := http.Get("http://localhost:9090/-/healthy")
if err != nil {
t.Fatalf("Unexpected HTTP error %s", err)
}
if resp.StatusCode != http.StatusOK {
t.Fatalf("Path /-/healthy with server unready test, Expected status 200 got: %s", resp.Status)
}
resp, err = http.Get("http://localhost:9090/-/ready")
if err != nil {
t.Fatalf("Unexpected HTTP error %s", err)
}
if resp.StatusCode != http.StatusServiceUnavailable {
t.Fatalf("Path /-/ready with server unready test, Expected status 503 got: %s", resp.Status)
}
resp, err = http.Get("http://localhost:9090/version")
if err != nil {
t.Fatalf("Unexpected HTTP error %s", err)
}
if resp.StatusCode != http.StatusServiceUnavailable {
t.Fatalf("Path /version with server unready test, Expected status 503 got: %s", resp.Status)
}
// Set to ready.
webHandler.Ready()
resp, err = http.Get("http://localhost:9090/-/healthy")
if err != nil {
t.Fatalf("Unexpected HTTP error %s", err)
}
if resp.StatusCode != http.StatusOK {
t.Fatalf("Path /-/healthy with server ready test, Expected status 200 got: %s", resp.Status)
}
resp, err = http.Get("http://localhost:9090/-/ready")
if err != nil {
t.Fatalf("Unexpected HTTP error %s", err)
}
if resp.StatusCode != http.StatusOK {
t.Fatalf("Path /-/ready with server ready test, Expected status 200 got: %s", resp.Status)
}
resp, err = http.Get("http://localhost:9090/version")
if err != nil {
t.Fatalf("Unexpected HTTP error %s", err)
}
if resp.StatusCode != http.StatusOK {
t.Fatalf("Path /version with server ready test, Expected status 200 got: %s", resp.Status)
}
}
func TestDebugHandler(t *testing.T) {
for _, tc := range []struct {
prefix, url string
code int
}{
{"/", "/debug/pprof/cmdline", 200},
{"/foo", "/foo/debug/pprof/cmdline", 200},
{"/", "/debug/pprof/goroutine", 200},
{"/foo", "/foo/debug/pprof/goroutine", 200},
{"/", "/debug/pprof/foo", 404},
{"/foo", "/bar/debug/pprof/goroutine", 404},
} {
opts := &Options{
RoutePrefix: tc.prefix,
MetricsPath: "/metrics",
}
handler := New(opts)
handler.Ready()
w := httptest.NewRecorder()
req, err := http.NewRequest("GET", tc.url, nil)
if err != nil {
t.Fatalf("Unexpected error %s", err)
}
handler.router.ServeHTTP(w, req)
if w.Code != tc.code {
t.Fatalf("Unexpected status code %d: %s", w.Code, w.Body.String())
}
}
}