prometheus/config/config_test.go
Philippe Laflamme 2aba238f31 Use common HTTPClientConfig for marathon_sd configuration (#4009)
This adds support for basic authentication which closes #3090

The support for specifying the client timeout was removed as discussed in https://github.com/prometheus/common/pull/123. Marathon was the only sd mechanism doing this and configuring the timeout is done through `Context`.

DC/OS uses a custom `Authorization` header for authenticating. This adds 2 new configuration properties to reflect this.

Existing configuration files that use the bearer token will no longer work. More work is required to make this backwards compatible.
2018-04-05 09:08:18 +01:00

793 lines
22 KiB
Go

// Copyright 2015 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 config
import (
"encoding/json"
"io/ioutil"
"net/url"
"path/filepath"
"regexp"
"strings"
"testing"
"time"
"github.com/prometheus/prometheus/discovery/azure"
"github.com/prometheus/prometheus/discovery/consul"
"github.com/prometheus/prometheus/discovery/dns"
"github.com/prometheus/prometheus/discovery/ec2"
"github.com/prometheus/prometheus/discovery/file"
"github.com/prometheus/prometheus/discovery/kubernetes"
"github.com/prometheus/prometheus/discovery/marathon"
"github.com/prometheus/prometheus/discovery/targetgroup"
"github.com/prometheus/prometheus/discovery/triton"
"github.com/prometheus/prometheus/discovery/zookeeper"
config_util "github.com/prometheus/common/config"
"github.com/prometheus/common/model"
sd_config "github.com/prometheus/prometheus/discovery/config"
"github.com/prometheus/prometheus/util/testutil"
"gopkg.in/yaml.v2"
)
func mustParseURL(u string) *config_util.URL {
parsed, err := url.Parse(u)
if err != nil {
panic(err)
}
return &config_util.URL{URL: parsed}
}
var expectedConf = &Config{
GlobalConfig: GlobalConfig{
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
EvaluationInterval: model.Duration(30 * time.Second),
ExternalLabels: model.LabelSet{
"monitor": "codelab",
"foo": "bar",
},
},
RuleFiles: []string{
filepath.FromSlash("testdata/first.rules"),
filepath.FromSlash("testdata/my/*.rules"),
},
RemoteWriteConfigs: []*RemoteWriteConfig{
{
URL: mustParseURL("http://remote1/push"),
RemoteTimeout: model.Duration(30 * time.Second),
WriteRelabelConfigs: []*RelabelConfig{
{
SourceLabels: model.LabelNames{"__name__"},
Separator: ";",
Regex: MustNewRegexp("expensive.*"),
Replacement: "$1",
Action: RelabelDrop,
},
},
QueueConfig: DefaultQueueConfig,
},
{
URL: mustParseURL("http://remote2/push"),
RemoteTimeout: model.Duration(30 * time.Second),
QueueConfig: DefaultQueueConfig,
},
},
RemoteReadConfigs: []*RemoteReadConfig{
{
URL: mustParseURL("http://remote1/read"),
RemoteTimeout: model.Duration(1 * time.Minute),
ReadRecent: true,
},
{
URL: mustParseURL("http://remote3/read"),
RemoteTimeout: model.Duration(1 * time.Minute),
ReadRecent: false,
RequiredMatchers: model.LabelSet{"job": "special"},
},
},
ScrapeConfigs: []*ScrapeConfig{
{
JobName: "prometheus",
HonorLabels: true,
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
HTTPClientConfig: config_util.HTTPClientConfig{
BearerTokenFile: filepath.FromSlash("testdata/valid_token_file"),
},
ServiceDiscoveryConfig: sd_config.ServiceDiscoveryConfig{
StaticConfigs: []*targetgroup.Group{
{
Targets: []model.LabelSet{
{model.AddressLabel: "localhost:9090"},
{model.AddressLabel: "localhost:9191"},
},
Labels: model.LabelSet{
"my": "label",
"your": "label",
},
},
},
FileSDConfigs: []*file.SDConfig{
{
Files: []string{"testdata/foo/*.slow.json", "testdata/foo/*.slow.yml", "testdata/single/file.yml"},
RefreshInterval: model.Duration(10 * time.Minute),
},
{
Files: []string{"testdata/bar/*.yaml"},
RefreshInterval: model.Duration(5 * time.Minute),
},
},
},
RelabelConfigs: []*RelabelConfig{
{
SourceLabels: model.LabelNames{"job", "__meta_dns_name"},
TargetLabel: "job",
Separator: ";",
Regex: MustNewRegexp("(.*)some-[regex]"),
Replacement: "foo-${1}",
Action: RelabelReplace,
}, {
SourceLabels: model.LabelNames{"abc"},
TargetLabel: "cde",
Separator: ";",
Regex: DefaultRelabelConfig.Regex,
Replacement: DefaultRelabelConfig.Replacement,
Action: RelabelReplace,
}, {
TargetLabel: "abc",
Separator: ";",
Regex: DefaultRelabelConfig.Regex,
Replacement: "static",
Action: RelabelReplace,
}, {
TargetLabel: "abc",
Separator: ";",
Regex: MustNewRegexp(""),
Replacement: "static",
Action: RelabelReplace,
},
},
},
{
JobName: "service-x",
ScrapeInterval: model.Duration(50 * time.Second),
ScrapeTimeout: model.Duration(5 * time.Second),
SampleLimit: 1000,
HTTPClientConfig: config_util.HTTPClientConfig{
BasicAuth: &config_util.BasicAuth{
Username: "admin_name",
Password: "multiline\nmysecret\ntest",
},
},
MetricsPath: "/my_path",
Scheme: "https",
ServiceDiscoveryConfig: sd_config.ServiceDiscoveryConfig{
DNSSDConfigs: []*dns.SDConfig{
{
Names: []string{
"first.dns.address.domain.com",
"second.dns.address.domain.com",
},
RefreshInterval: model.Duration(15 * time.Second),
Type: "SRV",
},
{
Names: []string{
"first.dns.address.domain.com",
},
RefreshInterval: model.Duration(30 * time.Second),
Type: "SRV",
},
},
},
RelabelConfigs: []*RelabelConfig{
{
SourceLabels: model.LabelNames{"job"},
Regex: MustNewRegexp("(.*)some-[regex]"),
Separator: ";",
Replacement: DefaultRelabelConfig.Replacement,
Action: RelabelDrop,
},
{
SourceLabels: model.LabelNames{"__address__"},
TargetLabel: "__tmp_hash",
Regex: DefaultRelabelConfig.Regex,
Replacement: DefaultRelabelConfig.Replacement,
Modulus: 8,
Separator: ";",
Action: RelabelHashMod,
},
{
SourceLabels: model.LabelNames{"__tmp_hash"},
Regex: MustNewRegexp("1"),
Separator: ";",
Replacement: DefaultRelabelConfig.Replacement,
Action: RelabelKeep,
},
{
Regex: MustNewRegexp("1"),
Separator: ";",
Replacement: DefaultRelabelConfig.Replacement,
Action: RelabelLabelMap,
},
{
Regex: MustNewRegexp("d"),
Separator: ";",
Replacement: DefaultRelabelConfig.Replacement,
Action: RelabelLabelDrop,
},
{
Regex: MustNewRegexp("k"),
Separator: ";",
Replacement: DefaultRelabelConfig.Replacement,
Action: RelabelLabelKeep,
},
},
MetricRelabelConfigs: []*RelabelConfig{
{
SourceLabels: model.LabelNames{"__name__"},
Regex: MustNewRegexp("expensive_metric.*"),
Separator: ";",
Replacement: DefaultRelabelConfig.Replacement,
Action: RelabelDrop,
},
},
},
{
JobName: "service-y",
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
ServiceDiscoveryConfig: sd_config.ServiceDiscoveryConfig{
ConsulSDConfigs: []*consul.SDConfig{
{
Server: "localhost:1234",
Token: "mysecret",
Services: []string{"nginx", "cache", "mysql"},
ServiceTag: "canary",
NodeMeta: map[string]string{"rack": "123"},
TagSeparator: consul.DefaultSDConfig.TagSeparator,
Scheme: "https",
RefreshInterval: consul.DefaultSDConfig.RefreshInterval,
AllowStale: true,
TLSConfig: config_util.TLSConfig{
CertFile: filepath.FromSlash("testdata/valid_cert_file"),
KeyFile: filepath.FromSlash("testdata/valid_key_file"),
CAFile: filepath.FromSlash("testdata/valid_ca_file"),
InsecureSkipVerify: false,
},
},
},
},
RelabelConfigs: []*RelabelConfig{
{
SourceLabels: model.LabelNames{"__meta_sd_consul_tags"},
Regex: MustNewRegexp("label:([^=]+)=([^,]+)"),
Separator: ",",
TargetLabel: "${1}",
Replacement: "${2}",
Action: RelabelReplace,
},
},
},
{
JobName: "service-z",
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: model.Duration(10 * time.Second),
MetricsPath: "/metrics",
Scheme: "http",
HTTPClientConfig: config_util.HTTPClientConfig{
TLSConfig: config_util.TLSConfig{
CertFile: filepath.FromSlash("testdata/valid_cert_file"),
KeyFile: filepath.FromSlash("testdata/valid_key_file"),
},
BearerToken: "mysecret",
},
},
{
JobName: "service-kubernetes",
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
ServiceDiscoveryConfig: sd_config.ServiceDiscoveryConfig{
KubernetesSDConfigs: []*kubernetes.SDConfig{
{
APIServer: kubernetesSDHostURL(),
Role: kubernetes.RoleEndpoint,
BasicAuth: &config_util.BasicAuth{
Username: "myusername",
Password: "mysecret",
},
NamespaceDiscovery: kubernetes.NamespaceDiscovery{},
},
},
},
},
{
JobName: "service-kubernetes-namespaces",
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
ServiceDiscoveryConfig: sd_config.ServiceDiscoveryConfig{
KubernetesSDConfigs: []*kubernetes.SDConfig{
{
APIServer: kubernetesSDHostURL(),
Role: kubernetes.RoleEndpoint,
NamespaceDiscovery: kubernetes.NamespaceDiscovery{
Names: []string{
"default",
},
},
},
},
},
},
{
JobName: "service-marathon",
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
ServiceDiscoveryConfig: sd_config.ServiceDiscoveryConfig{
MarathonSDConfigs: []*marathon.SDConfig{
{
Servers: []string{
"https://marathon.example.com:443",
},
RefreshInterval: model.Duration(30 * time.Second),
AuthToken: config_util.Secret("mysecret"),
HTTPClientConfig: config_util.HTTPClientConfig{
TLSConfig: config_util.TLSConfig{
CertFile: filepath.FromSlash("testdata/valid_cert_file"),
KeyFile: filepath.FromSlash("testdata/valid_key_file"),
},
},
},
},
},
},
{
JobName: "service-ec2",
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
ServiceDiscoveryConfig: sd_config.ServiceDiscoveryConfig{
EC2SDConfigs: []*ec2.SDConfig{
{
Region: "us-east-1",
AccessKey: "access",
SecretKey: "mysecret",
Profile: "profile",
RefreshInterval: model.Duration(60 * time.Second),
Port: 80,
Filters: []*ec2.Filter{
{
Name: "tag:environment",
Values: []string{"prod"},
},
{
Name: "tag:service",
Values: []string{"web", "db"},
},
},
},
},
},
},
{
JobName: "service-azure",
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
ServiceDiscoveryConfig: sd_config.ServiceDiscoveryConfig{
AzureSDConfigs: []*azure.SDConfig{
{
SubscriptionID: "11AAAA11-A11A-111A-A111-1111A1111A11",
TenantID: "BBBB222B-B2B2-2B22-B222-2BB2222BB2B2",
ClientID: "333333CC-3C33-3333-CCC3-33C3CCCCC33C",
ClientSecret: "mysecret",
RefreshInterval: model.Duration(5 * time.Minute),
Port: 9100,
},
},
},
},
{
JobName: "service-nerve",
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
ServiceDiscoveryConfig: sd_config.ServiceDiscoveryConfig{
NerveSDConfigs: []*zookeeper.NerveSDConfig{
{
Servers: []string{"localhost"},
Paths: []string{"/monitoring"},
Timeout: model.Duration(10 * time.Second),
},
},
},
},
{
JobName: "0123service-xxx",
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
ServiceDiscoveryConfig: sd_config.ServiceDiscoveryConfig{
StaticConfigs: []*targetgroup.Group{
{
Targets: []model.LabelSet{
{model.AddressLabel: "localhost:9090"},
},
},
},
},
},
{
JobName: "測試",
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
ServiceDiscoveryConfig: sd_config.ServiceDiscoveryConfig{
StaticConfigs: []*targetgroup.Group{
{
Targets: []model.LabelSet{
{model.AddressLabel: "localhost:9090"},
},
},
},
},
},
{
JobName: "service-triton",
ScrapeInterval: model.Duration(15 * time.Second),
ScrapeTimeout: DefaultGlobalConfig.ScrapeTimeout,
MetricsPath: DefaultScrapeConfig.MetricsPath,
Scheme: DefaultScrapeConfig.Scheme,
ServiceDiscoveryConfig: sd_config.ServiceDiscoveryConfig{
TritonSDConfigs: []*triton.SDConfig{
{
Account: "testAccount",
DNSSuffix: "triton.example.com",
Endpoint: "triton.example.com",
Port: 9163,
RefreshInterval: model.Duration(60 * time.Second),
Version: 1,
TLSConfig: config_util.TLSConfig{
CertFile: "testdata/valid_cert_file",
KeyFile: "testdata/valid_key_file",
},
},
},
},
},
},
AlertingConfig: AlertingConfig{
AlertmanagerConfigs: []*AlertmanagerConfig{
{
Scheme: "https",
Timeout: 10 * time.Second,
ServiceDiscoveryConfig: sd_config.ServiceDiscoveryConfig{
StaticConfigs: []*targetgroup.Group{
{
Targets: []model.LabelSet{
{model.AddressLabel: "1.2.3.4:9093"},
{model.AddressLabel: "1.2.3.5:9093"},
{model.AddressLabel: "1.2.3.6:9093"},
},
},
},
},
},
},
},
original: "",
}
func TestLoadConfig(t *testing.T) {
// Parse a valid file that sets a global scrape timeout. This tests whether parsing
// an overwritten default field in the global config permanently changes the default.
_, err := LoadFile("testdata/global_timeout.good.yml")
testutil.Ok(t, err)
c, err := LoadFile("testdata/conf.good.yml")
testutil.Ok(t, err)
expectedConf.original = c.original
testutil.Equals(t, expectedConf, c)
}
// YAML marshalling must not reveal authentication credentials.
func TestElideSecrets(t *testing.T) {
c, err := LoadFile("testdata/conf.good.yml")
testutil.Ok(t, err)
secretRe := regexp.MustCompile(`\\u003csecret\\u003e|<secret>`)
config, err := yaml.Marshal(c)
testutil.Ok(t, err)
yamlConfig := string(config)
matches := secretRe.FindAllStringIndex(yamlConfig, -1)
testutil.Assert(t, len(matches) == 7, "wrong number of secret matches found")
testutil.Assert(t, !strings.Contains(yamlConfig, "mysecret"),
"yaml marshal reveals authentication credentials.")
}
func TestLoadConfigRuleFilesAbsolutePath(t *testing.T) {
// Parse a valid file that sets a rule files with an absolute path
c, err := LoadFile(ruleFilesConfigFile)
testutil.Ok(t, err)
ruleFilesExpectedConf.original = c.original
testutil.Equals(t, ruleFilesExpectedConf, c)
}
var expectedErrors = []struct {
filename string
errMsg string
}{
{
filename: "jobname.bad.yml",
errMsg: `job_name is empty`,
}, {
filename: "jobname_dup.bad.yml",
errMsg: `found multiple scrape configs with job name "prometheus"`,
}, {
filename: "scrape_interval.bad.yml",
errMsg: `scrape timeout greater than scrape interval`,
}, {
filename: "labelname.bad.yml",
errMsg: `"not$allowed" is not a valid label name`,
}, {
filename: "labelname2.bad.yml",
errMsg: `"not:allowed" is not a valid label name`,
}, {
filename: "regex.bad.yml",
errMsg: "error parsing regexp",
}, {
filename: "modulus_missing.bad.yml",
errMsg: "relabel configuration for hashmod requires non-zero modulus",
}, {
filename: "labelkeep.bad.yml",
errMsg: "labelkeep action requires only 'regex', and no other fields",
}, {
filename: "labelkeep2.bad.yml",
errMsg: "labelkeep action requires only 'regex', and no other fields",
}, {
filename: "labelkeep3.bad.yml",
errMsg: "labelkeep action requires only 'regex', and no other fields",
}, {
filename: "labelkeep4.bad.yml",
errMsg: "labelkeep action requires only 'regex', and no other fields",
}, {
filename: "labelkeep5.bad.yml",
errMsg: "labelkeep action requires only 'regex', and no other fields",
}, {
filename: "labeldrop.bad.yml",
errMsg: "labeldrop action requires only 'regex', and no other fields",
}, {
filename: "labeldrop2.bad.yml",
errMsg: "labeldrop action requires only 'regex', and no other fields",
}, {
filename: "labeldrop3.bad.yml",
errMsg: "labeldrop action requires only 'regex', and no other fields",
}, {
filename: "labeldrop4.bad.yml",
errMsg: "labeldrop action requires only 'regex', and no other fields",
}, {
filename: "labeldrop5.bad.yml",
errMsg: "labeldrop action requires only 'regex', and no other fields",
}, {
filename: "labelmap.bad.yml",
errMsg: "\"l-$1\" is invalid 'replacement' for labelmap action",
}, {
filename: "rules.bad.yml",
errMsg: "invalid rule file path",
}, {
filename: "unknown_attr.bad.yml",
errMsg: "field consult_sd_configs not found in type config.plain",
}, {
filename: "bearertoken.bad.yml",
errMsg: "at most one of bearer_token & bearer_token_file must be configured",
}, {
filename: "bearertoken_basicauth.bad.yml",
errMsg: "at most one of basic_auth, bearer_token & bearer_token_file must be configured",
}, {
filename: "kubernetes_bearertoken.bad.yml",
errMsg: "at most one of bearer_token & bearer_token_file must be configured",
}, {
filename: "kubernetes_role.bad.yml",
errMsg: "role",
}, {
filename: "kubernetes_namespace_discovery.bad.yml",
errMsg: "field foo not found in type kubernetes.plain",
}, {
filename: "kubernetes_bearertoken_basicauth.bad.yml",
errMsg: "at most one of basic_auth, bearer_token & bearer_token_file must be configured",
}, {
filename: "marathon_no_servers.bad.yml",
errMsg: "marathon_sd: must contain at least one Marathon server",
}, {
filename: "marathon_authtoken_authtokenfile.bad.yml",
errMsg: "marathon_sd: at most one of auth_token & auth_token_file must be configured",
}, {
filename: "marathon_authtoken_basicauth.bad.yml",
errMsg: "marathon_sd: at most one of basic_auth, auth_token & auth_token_file must be configured",
}, {
filename: "marathon_authtoken_bearertoken.bad.yml",
errMsg: "marathon_sd: at most one of bearer_token, bearer_token_file, auth_token & auth_token_file must be configured",
}, {
filename: "url_in_targetgroup.bad.yml",
errMsg: "\"http://bad\" is not a valid hostname",
}, {
filename: "target_label_missing.bad.yml",
errMsg: "relabel configuration for replace action requires 'target_label' value",
}, {
filename: "target_label_hashmod_missing.bad.yml",
errMsg: "relabel configuration for hashmod action requires 'target_label' value",
}, {
filename: "unknown_global_attr.bad.yml",
errMsg: "field nonexistent_field not found in type config.plain",
}, {
filename: "remote_read_url_missing.bad.yml",
errMsg: `url for remote_read is empty`,
}, {
filename: "remote_write_url_missing.bad.yml",
errMsg: `url for remote_write is empty`,
},
{
filename: "ec2_filters_empty_values.bad.yml",
errMsg: `EC2 SD configuration filter values cannot be empty`,
},
{
filename: "section_key_dup.bad.yml",
errMsg: "field scrape_configs already set in type config.plain",
},
}
func TestBadConfigs(t *testing.T) {
for _, ee := range expectedErrors {
_, err := LoadFile("testdata/" + ee.filename)
testutil.NotOk(t, err, "%s", ee.filename)
testutil.Assert(t, strings.Contains(err.Error(), ee.errMsg),
"Expected error for %s to contain %q but got: %s", ee.filename, ee.errMsg, err)
}
}
func TestBadStaticConfigsJSON(t *testing.T) {
content, err := ioutil.ReadFile("testdata/static_config.bad.json")
testutil.Ok(t, err)
var tg targetgroup.Group
err = json.Unmarshal(content, &tg)
testutil.NotOk(t, err, "")
}
func TestBadStaticConfigsYML(t *testing.T) {
content, err := ioutil.ReadFile("testdata/static_config.bad.yml")
testutil.Ok(t, err)
var tg targetgroup.Group
err = yaml.UnmarshalStrict(content, &tg)
testutil.NotOk(t, err, "")
}
func TestEmptyConfig(t *testing.T) {
c, err := Load("")
testutil.Ok(t, err)
exp := DefaultConfig
testutil.Equals(t, exp, *c)
}
func TestEmptyGlobalBlock(t *testing.T) {
c, err := Load("global:\n")
testutil.Ok(t, err)
exp := DefaultConfig
exp.original = "global:\n"
testutil.Equals(t, exp, *c)
}
func TestTargetLabelValidity(t *testing.T) {
tests := []struct {
str string
valid bool
}{
{"-label", false},
{"label", true},
{"label${1}", true},
{"${1}label", true},
{"${1}", true},
{"${1}label", true},
{"${", false},
{"$", false},
{"${}", false},
{"foo${", false},
{"$1", true},
{"asd$2asd", true},
{"-foo${1}bar-", false},
{"_${1}_", true},
{"foo${bar}foo", true},
}
for _, test := range tests {
testutil.Assert(t, relabelTarget.Match([]byte(test.str)) == test.valid,
"Expected %q to be %v", test.str, test.valid)
}
}
func kubernetesSDHostURL() config_util.URL {
tURL, _ := url.Parse("https://localhost:1234")
return config_util.URL{URL: tURL}
}