prometheus/scrape/target_test.go

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// Copyright 2013 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 scrape
import (
"crypto/tls"
"crypto/x509"
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"fmt"
"io/ioutil"
"net/http"
"net/http/httptest"
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"net/url"
"reflect"
"strings"
"testing"
"time"
"github.com/prometheus/common/model"
config_util "github.com/prometheus/common/config"
"github.com/prometheus/prometheus/pkg/labels"
)
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const (
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caCertPath = "testdata/ca.cer"
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)
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func TestTargetLabels(t *testing.T) {
target := newTestTarget("example.com:80", 0, labels.FromStrings("job", "some_job", "foo", "bar"))
want := labels.FromStrings(model.JobLabel, "some_job", "foo", "bar")
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got := target.Labels()
if !reflect.DeepEqual(want, got) {
t.Errorf("want base labels %v, got %v", want, got)
}
}
func TestTargetOffset(t *testing.T) {
interval := 10 * time.Second
jitter := uint64(0)
offsets := make([]time.Duration, 10000)
// Calculate offsets for 10000 different targets.
for i := range offsets {
target := newTestTarget("example.com:80", 0, labels.FromStrings(
"label", fmt.Sprintf("%d", i),
))
offsets[i] = target.offset(interval, jitter)
}
// Put the offsets into buckets and validate that they are all
// within bounds.
bucketSize := 1 * time.Second
buckets := make([]int, interval/bucketSize)
for _, offset := range offsets {
if offset < 0 || offset >= interval {
t.Fatalf("Offset %v out of bounds", offset)
}
bucket := offset / bucketSize
buckets[bucket]++
}
t.Log(buckets)
// Calculate whether the number of targets per bucket
// does not differ more than a given tolerance.
avg := len(offsets) / len(buckets)
tolerance := 0.15
for _, bucket := range buckets {
diff := bucket - avg
if diff < 0 {
diff = -diff
}
if float64(diff)/float64(avg) > tolerance {
t.Fatalf("Bucket out of tolerance bounds")
}
}
}
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func TestTargetURL(t *testing.T) {
params := url.Values{
"abc": []string{"foo", "bar", "baz"},
"xyz": []string{"hoo"},
}
labels := labels.FromMap(map[string]string{
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model.AddressLabel: "example.com:1234",
model.SchemeLabel: "https",
model.MetricsPathLabel: "/metricz",
"__param_abc": "overwrite",
"__param_cde": "huu",
})
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target := NewTarget(labels, labels, params)
// The reserved labels are concatenated into a full URL. The first value for each
// URL query parameter can be set/modified via labels as well.
expectedParams := url.Values{
"abc": []string{"overwrite", "bar", "baz"},
"cde": []string{"huu"},
"xyz": []string{"hoo"},
}
expectedURL := url.URL{
Scheme: "https",
Host: "example.com:1234",
Path: "/metricz",
RawQuery: expectedParams.Encode(),
}
if u := target.URL(); !reflect.DeepEqual(u.String(), expectedURL.String()) {
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t.Fatalf("Expected URL %q, but got %q", expectedURL.String(), u.String())
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}
}
func newTestTarget(targetURL string, deadline time.Duration, lbls labels.Labels) *Target {
lb := labels.NewBuilder(lbls)
lb.Set(model.SchemeLabel, "http")
lb.Set(model.AddressLabel, strings.TrimPrefix(targetURL, "http://"))
lb.Set(model.MetricsPathLabel, "/metrics")
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return &Target{labels: lb.Labels()}
}
func TestNewHTTPBearerToken(t *testing.T) {
server := httptest.NewServer(
http.HandlerFunc(
func(w http.ResponseWriter, r *http.Request) {
expected := "Bearer 1234"
received := r.Header.Get("Authorization")
if expected != received {
t.Fatalf("Authorization header was not set correctly: expected '%v', got '%v'", expected, received)
}
},
),
)
defer server.Close()
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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cfg := config_util.HTTPClientConfig{
BearerToken: "1234",
}
c, err := config_util.NewClientFromConfig(cfg, "test", false)
if err != nil {
t.Fatal(err)
}
_, err = c.Get(server.URL)
if err != nil {
t.Fatal(err)
}
}
func TestNewHTTPBearerTokenFile(t *testing.T) {
server := httptest.NewServer(
http.HandlerFunc(
func(w http.ResponseWriter, r *http.Request) {
expected := "Bearer 12345"
received := r.Header.Get("Authorization")
if expected != received {
t.Fatalf("Authorization header was not set correctly: expected '%v', got '%v'", expected, received)
}
},
),
)
defer server.Close()
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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cfg := config_util.HTTPClientConfig{
BearerTokenFile: "testdata/bearertoken.txt",
}
c, err := config_util.NewClientFromConfig(cfg, "test", false)
if err != nil {
t.Fatal(err)
}
_, err = c.Get(server.URL)
if err != nil {
t.Fatal(err)
}
}
func TestNewHTTPBasicAuth(t *testing.T) {
server := httptest.NewServer(
http.HandlerFunc(
func(w http.ResponseWriter, r *http.Request) {
username, password, ok := r.BasicAuth()
if !(ok && username == "user" && password == "password123") {
t.Fatalf("Basic authorization header was not set correctly: expected '%v:%v', got '%v:%v'", "user", "password123", username, password)
}
},
),
)
defer server.Close()
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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cfg := config_util.HTTPClientConfig{
BasicAuth: &config_util.BasicAuth{
Username: "user",
Password: "password123",
},
}
c, err := config_util.NewClientFromConfig(cfg, "test", false)
if err != nil {
t.Fatal(err)
}
_, err = c.Get(server.URL)
if err != nil {
t.Fatal(err)
}
}
func TestNewHTTPCACert(t *testing.T) {
server := httptest.NewUnstartedServer(
http.HandlerFunc(
func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", `text/plain; version=0.0.4`)
w.Write([]byte{})
},
),
)
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server.TLS = newTLSConfig("server", t)
server.StartTLS()
defer server.Close()
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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cfg := config_util.HTTPClientConfig{
TLSConfig: config_util.TLSConfig{
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CAFile: caCertPath,
},
}
c, err := config_util.NewClientFromConfig(cfg, "test", false)
if err != nil {
t.Fatal(err)
}
_, err = c.Get(server.URL)
if err != nil {
t.Fatal(err)
}
}
func TestNewHTTPClientCert(t *testing.T) {
server := httptest.NewUnstartedServer(
http.HandlerFunc(
func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", `text/plain; version=0.0.4`)
w.Write([]byte{})
},
),
)
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tlsConfig := newTLSConfig("server", t)
tlsConfig.ClientAuth = tls.RequireAndVerifyClientCert
tlsConfig.ClientCAs = tlsConfig.RootCAs
tlsConfig.BuildNameToCertificate()
server.TLS = tlsConfig
server.StartTLS()
defer server.Close()
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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cfg := config_util.HTTPClientConfig{
TLSConfig: config_util.TLSConfig{
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CAFile: caCertPath,
CertFile: "testdata/client.cer",
KeyFile: "testdata/client.key",
},
}
c, err := config_util.NewClientFromConfig(cfg, "test", false)
if err != nil {
t.Fatal(err)
}
_, err = c.Get(server.URL)
if err != nil {
t.Fatal(err)
}
}
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func TestNewHTTPWithServerName(t *testing.T) {
server := httptest.NewUnstartedServer(
http.HandlerFunc(
func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", `text/plain; version=0.0.4`)
w.Write([]byte{})
},
),
)
server.TLS = newTLSConfig("servername", t)
server.StartTLS()
defer server.Close()
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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cfg := config_util.HTTPClientConfig{
TLSConfig: config_util.TLSConfig{
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CAFile: caCertPath,
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ServerName: "prometheus.rocks",
},
}
c, err := config_util.NewClientFromConfig(cfg, "test", false)
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if err != nil {
t.Fatal(err)
}
_, err = c.Get(server.URL)
if err != nil {
t.Fatal(err)
}
}
func TestNewHTTPWithBadServerName(t *testing.T) {
server := httptest.NewUnstartedServer(
http.HandlerFunc(
func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", `text/plain; version=0.0.4`)
w.Write([]byte{})
},
),
)
server.TLS = newTLSConfig("servername", t)
server.StartTLS()
defer server.Close()
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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cfg := config_util.HTTPClientConfig{
TLSConfig: config_util.TLSConfig{
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CAFile: caCertPath,
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ServerName: "badname",
},
}
c, err := config_util.NewClientFromConfig(cfg, "test", false)
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if err != nil {
t.Fatal(err)
}
_, err = c.Get(server.URL)
if err == nil {
t.Fatal("Expected error, got nil.")
}
}
func newTLSConfig(certName string, t *testing.T) *tls.Config {
tlsConfig := &tls.Config{}
caCertPool := x509.NewCertPool()
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caCert, err := ioutil.ReadFile(caCertPath)
if err != nil {
t.Fatalf("Couldn't set up TLS server: %v", err)
}
caCertPool.AppendCertsFromPEM(caCert)
tlsConfig.RootCAs = caCertPool
tlsConfig.ServerName = "127.0.0.1"
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certPath := fmt.Sprintf("testdata/%s.cer", certName)
keyPath := fmt.Sprintf("testdata/%s.key", certName)
cert, err := tls.LoadX509KeyPair(certPath, keyPath)
if err != nil {
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t.Errorf("Unable to use specified server cert (%s) & key (%v): %s", certPath, keyPath, err)
}
tlsConfig.Certificates = []tls.Certificate{cert}
tlsConfig.BuildNameToCertificate()
return tlsConfig
}
func TestNewClientWithBadTLSConfig(t *testing.T) {
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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cfg := config_util.HTTPClientConfig{
TLSConfig: config_util.TLSConfig{
CAFile: "testdata/nonexistent_ca.cer",
CertFile: "testdata/nonexistent_client.cer",
KeyFile: "testdata/nonexistent_client.key",
},
}
_, err := config_util.NewClientFromConfig(cfg, "test", false)
if err == nil {
t.Fatalf("Expected error, got nil.")
}
}