-
Notifications
You must be signed in to change notification settings - Fork 1.1k
/
eureka.go
152 lines (137 loc) · 5.67 KB
/
eureka.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
package eureka
import (
"encoding/xml"
"flag"
"fmt"
"strconv"
"time"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/promauth"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/promscrape/discoveryutils"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/proxy"
)
// SDCheckInterval defines interval for targets refresh.
var SDCheckInterval = flag.Duration("promscrape.eurekaSDCheckInterval", 30*time.Second, "Interval for checking for changes in eureka. "+
"This works only if eureka_sd_configs is configured in '-promscrape.config' file. "+
"See https://prometheus.io/docs/prometheus/latest/configuration/configuration/#eureka_sd_config for details")
// SDConfig represents service discovery config for eureka.
//
// See https://prometheus.io/docs/prometheus/latest/configuration/configuration/#eureka
type SDConfig struct {
Server string `yaml:"server,omitempty"`
HTTPClientConfig promauth.HTTPClientConfig `yaml:",inline"`
ProxyURL *proxy.URL `yaml:"proxy_url,omitempty"`
ProxyClientConfig promauth.ProxyClientConfig `yaml:",inline"`
// RefreshInterval time.Duration `yaml:"refresh_interval"`
// refresh_interval is obtained from `-promscrape.ec2SDCheckInterval` command-line option.
}
type applications struct {
Applications []Application `xml:"application"`
}
// Application - eureka application https://github.com/Netflix/eureka/wiki/Eureka-REST-operations/
type Application struct {
Name string `xml:"name"`
Instances []Instance `xml:"instance"`
}
// Port - eureka instance port.
type Port struct {
Port int `xml:",chardata"`
Enabled bool `xml:"enabled,attr"`
}
// Instance - eureka instance https://github.com/Netflix/eureka/wiki/Eureka-REST-operations
type Instance struct {
HostName string `xml:"hostName"`
HomePageURL string `xml:"homePageUrl"`
StatusPageURL string `xml:"statusPageUrl"`
HealthCheckURL string `xml:"healthCheckUrl"`
App string `xml:"app"`
IPAddr string `xml:"ipAddr"`
VipAddress string `xml:"vipAddress"`
SecureVipAddress string `xml:"secureVipAddress"`
Status string `xml:"status"`
Port Port `xml:"port"`
SecurePort Port `xml:"securePort"`
DataCenterInfo DataCenterInfo `xml:"dataCenterInfo"`
Metadata MetaData `xml:"metadata"`
CountryID int `xml:"countryId"`
InstanceID string `xml:"instanceId"`
}
// MetaData - eureka objects metadata.
type MetaData struct {
Items []Tag `xml:",any"`
}
// Tag - eureka metadata tag - list of k/v values.
type Tag struct {
XMLName xml.Name
Content string `xml:",innerxml"`
}
// DataCenterInfo -eureka datacentre metadata
type DataCenterInfo struct {
Name string `xml:"name"`
Metadata MetaData `xml:"metadata"`
}
// GetLabels returns Eureka labels according to sdc.
func (sdc *SDConfig) GetLabels(baseDir string) ([]map[string]string, error) {
cfg, err := getAPIConfig(sdc, baseDir)
if err != nil {
return nil, fmt.Errorf("cannot get API config: %w", err)
}
data, err := getAPIResponse(cfg, "/apps")
if err != nil {
return nil, err
}
apps, err := parseAPIResponse(data)
if err != nil {
return nil, err
}
return addInstanceLabels(apps), nil
}
// MustStop stops further usage for sdc.
func (sdc *SDConfig) MustStop() {
configMap.Delete(sdc)
}
func addInstanceLabels(apps *applications) []map[string]string {
var ms []map[string]string
for _, app := range apps.Applications {
for _, instance := range app.Instances {
instancePort := 80
if instance.Port.Port != 0 {
instancePort = instance.Port.Port
}
targetAddress := discoveryutils.JoinHostPort(instance.HostName, instancePort)
m := map[string]string{
"__address__": targetAddress,
"instance": instance.InstanceID,
"__meta_eureka_app_name": app.Name,
"__meta_eureka_app_instance_hostname": instance.HostName,
"__meta_eureka_app_instance_homepage_url": instance.HomePageURL,
"__meta_eureka_app_instance_statuspage_url": instance.StatusPageURL,
"__meta_eureka_app_instance_healthcheck_url": instance.HealthCheckURL,
"__meta_eureka_app_instance_ip_addr": instance.IPAddr,
"__meta_eureka_app_instance_vip_address": instance.VipAddress,
"__meta_eureka_app_instance_secure_vip_address": instance.SecureVipAddress,
"__meta_eureka_app_instance_status": instance.Status,
"__meta_eureka_app_instance_country_id": strconv.Itoa(instance.CountryID),
"__meta_eureka_app_instance_id": instance.InstanceID,
}
if instance.Port.Port != 0 {
m["__meta_eureka_app_instance_port"] = strconv.Itoa(instance.Port.Port)
m["__meta_eureka_app_instance_port_enabled"] = strconv.FormatBool(instance.Port.Enabled)
}
if instance.SecurePort.Port != 0 {
m["__meta_eureka_app_instance_secure_port"] = strconv.Itoa(instance.SecurePort.Port)
m["__meta_eureka_app_instance_secure_port_enabled"] = strconv.FormatBool(instance.SecurePort.Enabled)
}
if len(instance.DataCenterInfo.Name) > 0 {
m["__meta_eureka_app_instance_datacenterinfo_name"] = instance.DataCenterInfo.Name
for _, tag := range instance.DataCenterInfo.Metadata.Items {
m["__meta_eureka_app_instance_datacenterinfo_metadata_"+discoveryutils.SanitizeLabelName(tag.XMLName.Local)] = tag.Content
}
}
for _, tag := range instance.Metadata.Items {
m["__meta_eureka_app_instance_metadata_"+discoveryutils.SanitizeLabelName(tag.XMLName.Local)] = tag.Content
}
ms = append(ms, m)
}
}
return ms
}