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
153
154
155
156
157
158
159
160
161
|
package main
import (
"fmt"
"net/http"
"strings"
pb "go.wit.com/lib/protobuf/virtbuf"
"go.wit.com/lib/virtigoxml"
"go.wit.com/log"
)
// remove '?' part and trailing '/'
func cleanURL(url string) string {
url = "/" + strings.Trim(url, "/")
return url
}
func okHandler(w http.ResponseWriter, r *http.Request) {
var route string
route = cleanURL(r.URL.Path)
// is the cluster running what it should?
if route == "/droplets" {
for _, d := range me.cluster.Droplets {
var msg string
if d.StartState == pb.DropletState_ON {
msg = "(should be on)"
}
switch d.CurrentState {
case pb.DropletState_ON:
fmt.Fprintln(w, d.Hostname, "ON")
case pb.DropletState_OFF:
fmt.Fprintln(w, d.Hostname, msg)
default:
fmt.Fprintln(w, d.Hostname, "? state:", d.CurrentState, msg)
}
}
return
}
// show only what droplets should be running but are missing
if route == "/missing" {
var count int
var missing int
for _, d := range me.cluster.Droplets {
if d.StartState != pb.DropletState_ON {
continue
}
count += 1
if d.CurrentState == pb.DropletState_ON {
continue
}
missing += 1
fmt.Fprintln(w, d.Hostname, "current state:", d.CurrentState)
}
if missing == 0 {
fmt.Fprintln(w, "all", count, "droplets set to run are running")
} else {
fmt.Fprintln(w, missing, "droplets missing")
fmt.Fprintln(w, count, "droplets should be running")
}
return
}
if route == "/favicon.ico" {
// w.Header().Set("Content-Type", "image/svg+xml")
w.Header().Set("Content-Type", "image/png")
writeFile(w, "ipv6.png")
return
}
if route == "/goReference.svg" {
w.Header().Set("Content-Type", "image/svg+xml")
writeFile(w, "goReference.svg")
return
}
if route == "/uptime" {
ok, s := clusterHealthy()
if ok {
log.Info("Handling URL:", route, "cluster is ok", s)
fmt.Fprintln(w, s)
} else {
log.Info("Handling URL:", route, "cluster is not right yet", s)
fmt.Fprintln(w, s)
}
return
}
if route == "/start" {
hostname := r.URL.Query().Get("hostname")
if hostname == "" {
log.Warn("start failed. hostname is blank", cleanURL(r.URL.Path))
fmt.Fprintln(w, "start failed. hostname is blank", cleanURL(r.URL.Path))
return
}
log.Warn("hostname is", hostname)
fmt.Fprintln(w, "hostname is", hostname)
// log.Warn("Handling URL:", tmp, "start droplet", start)
ok, result := Start(hostname)
if ok {
fmt.Fprintln(w, hostname, "started ok")
} else {
fmt.Fprintln(w, result)
fmt.Fprintln(w, hostname, "start failed")
}
return
}
if route == "/dumpcluster" {
dumpCluster(w)
return
}
if route == "/dumpdroplets" {
dumpDroplets(w)
return
}
if route == "/dumplibvirtxml" {
virtigoxml.DumpLibvirtxmlDomainNames()
return
}
log.Warn("BAD URL =", route)
fmt.Fprintln(w, "BAD URL tmp =", route)
}
// write a file out to the http socket
func writeFile(w http.ResponseWriter, filename string) {
fullname := "resources/" + filename
pfile, err := resources.ReadFile(fullname)
if err != nil {
log.Println("ERROR:", err)
// w.Write(pfile)
return
}
var repohtml string
repohtml = string(pfile)
if filename == "goReference.svg" {
w.Header().Set("Content-Type", "image/svg+xml")
}
fmt.Fprintln(w, repohtml)
log.Println("writeFile() found internal file:", filename)
}
// starts and sits waiting for HTTP requests
func startHTTP() {
http.HandleFunc("/", okHandler)
p := fmt.Sprintf(":%d", argv.Port)
log.Println("Running on port", p)
err := http.ListenAndServe(p, nil)
if err != nil {
log.Println("Error starting server:", err)
}
}
|
