mirror of
https://github.com/prometheus/prometheus.git
synced 2024-12-26 14:09:41 -08:00
427 lines
11 KiB
Go
427 lines
11 KiB
Go
// Copyright 2021 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 http
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"net/http"
|
|
"net/http/httptest"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/go-kit/log"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
dto "github.com/prometheus/client_model/go"
|
|
"github.com/prometheus/common/config"
|
|
"github.com/prometheus/common/model"
|
|
"github.com/stretchr/testify/require"
|
|
|
|
"github.com/prometheus/prometheus/discovery/targetgroup"
|
|
)
|
|
|
|
func TestHTTPValidRefresh(t *testing.T) {
|
|
ts := httptest.NewServer(http.FileServer(http.Dir("./fixtures")))
|
|
t.Cleanup(ts.Close)
|
|
|
|
cfg := SDConfig{
|
|
HTTPClientConfig: config.DefaultHTTPClientConfig,
|
|
URL: ts.URL + "/http_sd.good.json",
|
|
RefreshInterval: model.Duration(30 * time.Second),
|
|
}
|
|
|
|
d, err := NewDiscovery(&cfg, log.NewNopLogger(), nil, prometheus.NewRegistry())
|
|
require.NoError(t, err)
|
|
|
|
ctx := context.Background()
|
|
tgs, err := d.Refresh(ctx)
|
|
require.NoError(t, err)
|
|
|
|
expectedTargets := []*targetgroup.Group{
|
|
{
|
|
Targets: []model.LabelSet{
|
|
{
|
|
model.AddressLabel: model.LabelValue("127.0.0.1:9090"),
|
|
},
|
|
},
|
|
Labels: model.LabelSet{
|
|
model.LabelName("__meta_datacenter"): model.LabelValue("bru1"),
|
|
model.LabelName("__meta_url"): model.LabelValue(ts.URL + "/http_sd.good.json"),
|
|
},
|
|
Source: urlSource(ts.URL+"/http_sd.good.json", 0),
|
|
},
|
|
}
|
|
require.Equal(t, expectedTargets, tgs)
|
|
require.Equal(t, 0.0, getFailureCount(d.failuresCount))
|
|
}
|
|
|
|
func TestHTTPInvalidCode(t *testing.T) {
|
|
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
w.WriteHeader(http.StatusBadRequest)
|
|
}))
|
|
|
|
t.Cleanup(ts.Close)
|
|
|
|
cfg := SDConfig{
|
|
HTTPClientConfig: config.DefaultHTTPClientConfig,
|
|
URL: ts.URL,
|
|
RefreshInterval: model.Duration(30 * time.Second),
|
|
}
|
|
|
|
d, err := NewDiscovery(&cfg, log.NewNopLogger(), nil, prometheus.NewRegistry())
|
|
require.NoError(t, err)
|
|
|
|
ctx := context.Background()
|
|
_, err = d.Refresh(ctx)
|
|
require.EqualError(t, err, "server returned HTTP status 400 Bad Request")
|
|
require.Equal(t, 1.0, getFailureCount(d.failuresCount))
|
|
}
|
|
|
|
func TestHTTPInvalidFormat(t *testing.T) {
|
|
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
fmt.Fprintln(w, "{}")
|
|
}))
|
|
|
|
t.Cleanup(ts.Close)
|
|
|
|
cfg := SDConfig{
|
|
HTTPClientConfig: config.DefaultHTTPClientConfig,
|
|
URL: ts.URL,
|
|
RefreshInterval: model.Duration(30 * time.Second),
|
|
}
|
|
|
|
d, err := NewDiscovery(&cfg, log.NewNopLogger(), nil, prometheus.NewRegistry())
|
|
require.NoError(t, err)
|
|
|
|
ctx := context.Background()
|
|
_, err = d.Refresh(ctx)
|
|
require.EqualError(t, err, `unsupported content type "text/plain; charset=utf-8"`)
|
|
require.Equal(t, 1.0, getFailureCount(d.failuresCount))
|
|
}
|
|
|
|
func getFailureCount(failuresCount prometheus.Counter) float64 {
|
|
failureChan := make(chan prometheus.Metric)
|
|
|
|
go func() {
|
|
failuresCount.Collect(failureChan)
|
|
close(failureChan)
|
|
}()
|
|
|
|
var counter dto.Metric
|
|
for {
|
|
metric, ok := <-failureChan
|
|
if ok == false {
|
|
break
|
|
}
|
|
metric.Write(&counter)
|
|
}
|
|
|
|
return *counter.Counter.Value
|
|
}
|
|
|
|
func TestContentTypeRegex(t *testing.T) {
|
|
cases := []struct {
|
|
header string
|
|
match bool
|
|
}{
|
|
{
|
|
header: "application/json;charset=utf-8",
|
|
match: true,
|
|
},
|
|
{
|
|
header: "application/json;charset=UTF-8",
|
|
match: true,
|
|
},
|
|
{
|
|
header: "Application/JSON;Charset=\"utf-8\"",
|
|
match: true,
|
|
},
|
|
{
|
|
header: "application/json; charset=\"utf-8\"",
|
|
match: true,
|
|
},
|
|
{
|
|
header: "application/json",
|
|
match: true,
|
|
},
|
|
{
|
|
header: "application/jsonl; charset=\"utf-8\"",
|
|
match: false,
|
|
},
|
|
{
|
|
header: "application/json;charset=UTF-9",
|
|
match: false,
|
|
},
|
|
{
|
|
header: "application /json;charset=UTF-8",
|
|
match: false,
|
|
},
|
|
{
|
|
header: "application/ json;charset=UTF-8",
|
|
match: false,
|
|
},
|
|
{
|
|
header: "application/json;",
|
|
match: false,
|
|
},
|
|
{
|
|
header: "charset=UTF-8",
|
|
match: false,
|
|
},
|
|
}
|
|
|
|
for _, test := range cases {
|
|
t.Run(test.header, func(t *testing.T) {
|
|
require.Equal(t, test.match, matchContentType.MatchString(test.header))
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestSourceDisappeared(t *testing.T) {
|
|
var stubResponse string
|
|
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
w.Header().Set("Content-Type", "application/json")
|
|
fmt.Fprintln(w, stubResponse)
|
|
}))
|
|
t.Cleanup(ts.Close)
|
|
|
|
cases := []struct {
|
|
responses []string
|
|
expectedTargets [][]*targetgroup.Group
|
|
}{
|
|
{
|
|
responses: []string{
|
|
`[]`,
|
|
`[]`,
|
|
},
|
|
expectedTargets: [][]*targetgroup.Group{{}, {}},
|
|
},
|
|
{
|
|
responses: []string{
|
|
`[{"labels": {"k": "1"}, "targets": ["127.0.0.1"]}]`,
|
|
`[{"labels": {"k": "1"}, "targets": ["127.0.0.1"]}, {"labels": {"k": "2"}, "targets": ["127.0.0.1"]}]`,
|
|
},
|
|
expectedTargets: [][]*targetgroup.Group{
|
|
{
|
|
{
|
|
Targets: []model.LabelSet{
|
|
{
|
|
model.AddressLabel: model.LabelValue("127.0.0.1"),
|
|
},
|
|
},
|
|
Labels: model.LabelSet{
|
|
model.LabelName("k"): model.LabelValue("1"),
|
|
model.LabelName("__meta_url"): model.LabelValue(ts.URL),
|
|
},
|
|
Source: urlSource(ts.URL, 0),
|
|
},
|
|
},
|
|
{
|
|
{
|
|
Targets: []model.LabelSet{
|
|
{
|
|
model.AddressLabel: model.LabelValue("127.0.0.1"),
|
|
},
|
|
},
|
|
Labels: model.LabelSet{
|
|
model.LabelName("k"): model.LabelValue("1"),
|
|
model.LabelName("__meta_url"): model.LabelValue(ts.URL),
|
|
},
|
|
Source: urlSource(ts.URL, 0),
|
|
},
|
|
{
|
|
Targets: []model.LabelSet{
|
|
{
|
|
model.AddressLabel: model.LabelValue("127.0.0.1"),
|
|
},
|
|
},
|
|
Labels: model.LabelSet{
|
|
model.LabelName("k"): model.LabelValue("2"),
|
|
model.LabelName("__meta_url"): model.LabelValue(ts.URL),
|
|
},
|
|
Source: urlSource(ts.URL, 1),
|
|
},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
responses: []string{
|
|
`[{"labels": {"k": "1"}, "targets": ["127.0.0.1"]}, {"labels": {"k": "2"}, "targets": ["127.0.0.1"]}]`,
|
|
`[{"labels": {"k": "1"}, "targets": ["127.0.0.1"]}]`,
|
|
},
|
|
expectedTargets: [][]*targetgroup.Group{
|
|
{
|
|
{
|
|
Targets: []model.LabelSet{
|
|
{
|
|
model.AddressLabel: model.LabelValue("127.0.0.1"),
|
|
},
|
|
},
|
|
Labels: model.LabelSet{
|
|
model.LabelName("k"): model.LabelValue("1"),
|
|
model.LabelName("__meta_url"): model.LabelValue(ts.URL),
|
|
},
|
|
Source: urlSource(ts.URL, 0),
|
|
},
|
|
{
|
|
Targets: []model.LabelSet{
|
|
{
|
|
model.AddressLabel: model.LabelValue("127.0.0.1"),
|
|
},
|
|
},
|
|
Labels: model.LabelSet{
|
|
model.LabelName("k"): model.LabelValue("2"),
|
|
model.LabelName("__meta_url"): model.LabelValue(ts.URL),
|
|
},
|
|
Source: urlSource(ts.URL, 1),
|
|
},
|
|
},
|
|
{
|
|
{
|
|
Targets: []model.LabelSet{
|
|
{
|
|
model.AddressLabel: model.LabelValue("127.0.0.1"),
|
|
},
|
|
},
|
|
Labels: model.LabelSet{
|
|
model.LabelName("k"): model.LabelValue("1"),
|
|
model.LabelName("__meta_url"): model.LabelValue(ts.URL),
|
|
},
|
|
Source: urlSource(ts.URL, 0),
|
|
},
|
|
{
|
|
Targets: nil,
|
|
Labels: nil,
|
|
Source: urlSource(ts.URL, 1),
|
|
},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
responses: []string{
|
|
`[{"labels": {"k": "1"}, "targets": ["127.0.0.1"]}, {"labels": {"k": "2"}, "targets": ["127.0.0.1"]}, {"labels": {"k": "3"}, "targets": ["127.0.0.1"]}]`,
|
|
`[{"labels": {"k": "1"}, "targets": ["127.0.0.1"]}]`,
|
|
`[{"labels": {"k": "v"}, "targets": ["127.0.0.2"]}, {"labels": {"k": "vv"}, "targets": ["127.0.0.3"]}]`,
|
|
},
|
|
expectedTargets: [][]*targetgroup.Group{
|
|
{
|
|
{
|
|
Targets: []model.LabelSet{
|
|
{
|
|
model.AddressLabel: model.LabelValue("127.0.0.1"),
|
|
},
|
|
},
|
|
Labels: model.LabelSet{
|
|
model.LabelName("k"): model.LabelValue("1"),
|
|
model.LabelName("__meta_url"): model.LabelValue(ts.URL),
|
|
},
|
|
Source: urlSource(ts.URL, 0),
|
|
},
|
|
{
|
|
Targets: []model.LabelSet{
|
|
{
|
|
model.AddressLabel: model.LabelValue("127.0.0.1"),
|
|
},
|
|
},
|
|
Labels: model.LabelSet{
|
|
model.LabelName("k"): model.LabelValue("2"),
|
|
model.LabelName("__meta_url"): model.LabelValue(ts.URL),
|
|
},
|
|
Source: urlSource(ts.URL, 1),
|
|
},
|
|
{
|
|
Targets: []model.LabelSet{
|
|
{
|
|
model.AddressLabel: model.LabelValue("127.0.0.1"),
|
|
},
|
|
},
|
|
Labels: model.LabelSet{
|
|
model.LabelName("k"): model.LabelValue("3"),
|
|
model.LabelName("__meta_url"): model.LabelValue(ts.URL),
|
|
},
|
|
Source: urlSource(ts.URL, 2),
|
|
},
|
|
},
|
|
{
|
|
{
|
|
Targets: []model.LabelSet{
|
|
{
|
|
model.AddressLabel: model.LabelValue("127.0.0.1"),
|
|
},
|
|
},
|
|
Labels: model.LabelSet{
|
|
model.LabelName("k"): model.LabelValue("1"),
|
|
model.LabelName("__meta_url"): model.LabelValue(ts.URL),
|
|
},
|
|
Source: urlSource(ts.URL, 0),
|
|
},
|
|
{
|
|
Targets: nil,
|
|
Labels: nil,
|
|
Source: urlSource(ts.URL, 1),
|
|
},
|
|
{
|
|
Targets: nil,
|
|
Labels: nil,
|
|
Source: urlSource(ts.URL, 2),
|
|
},
|
|
},
|
|
{
|
|
{
|
|
Targets: []model.LabelSet{
|
|
{
|
|
model.AddressLabel: model.LabelValue("127.0.0.2"),
|
|
},
|
|
},
|
|
Labels: model.LabelSet{
|
|
model.LabelName("k"): model.LabelValue("v"),
|
|
model.LabelName("__meta_url"): model.LabelValue(ts.URL),
|
|
},
|
|
Source: urlSource(ts.URL, 0),
|
|
},
|
|
{
|
|
Targets: []model.LabelSet{
|
|
{
|
|
model.AddressLabel: model.LabelValue("127.0.0.3"),
|
|
},
|
|
},
|
|
Labels: model.LabelSet{
|
|
model.LabelName("k"): model.LabelValue("vv"),
|
|
model.LabelName("__meta_url"): model.LabelValue(ts.URL),
|
|
},
|
|
Source: urlSource(ts.URL, 1),
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
|
|
cfg := SDConfig{
|
|
HTTPClientConfig: config.DefaultHTTPClientConfig,
|
|
URL: ts.URL,
|
|
RefreshInterval: model.Duration(1 * time.Second),
|
|
}
|
|
d, err := NewDiscovery(&cfg, log.NewNopLogger(), nil, prometheus.NewRegistry())
|
|
require.NoError(t, err)
|
|
for _, test := range cases {
|
|
ctx := context.Background()
|
|
for i, res := range test.responses {
|
|
stubResponse = res
|
|
tgs, err := d.Refresh(ctx)
|
|
require.NoError(t, err)
|
|
require.Equal(t, test.expectedTargets[i], tgs)
|
|
}
|
|
}
|
|
}
|