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
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
|
package guestmetric
import (
xenstoreclient "../xenstoreclient"
"bufio"
"bytes"
"fmt"
"os"
"path/filepath"
"regexp"
"sort"
"strconv"
"strings"
)
type Collector struct {
Client xenstoreclient.XenStoreClient
Ballon bool
Debug bool
}
func (c *Collector) CollectOS() (GuestMetric, error) {
current := make(GuestMetric, 0)
f, err := os.OpenFile("/var/cache/xe-linux-distribution", os.O_RDONLY, 0666)
if err != nil {
return nil, err
}
defer f.Close()
scanner := bufio.NewScanner(f)
for scanner.Scan() {
line := scanner.Text()
if strings.Contains(line, "=") {
parts := strings.SplitN(line, "=", 2)
k := strings.TrimSpace(parts[0])
v := strings.TrimSpace(strings.Trim(strings.TrimSpace(parts[1]), "\""))
current[k] = v
}
}
return prefixKeys("data/", current), nil
}
func (c *Collector) CollectMisc() (GuestMetric, error) {
current := make(GuestMetric, 0)
if c.Ballon {
current["control/feature-balloon"] = "1"
} else {
current["control/feature-balloon"] = "0"
}
current["attr/PVAddons/Installed"] = "1"
current["attr/PVAddons/MajorVersion"] = "@PRODUCT_MAJOR_VERSION@"
current["attr/PVAddons/MinorVersion"] = "@PRODUCT_MINOR_VERSION@"
current["attr/PVAddons/MicroVersion"] = "@PRODUCT_MICRO_VERSION@"
current["attr/PVAddons/BuildVersion"] = "@NUMERIC_BUILD_NUMBER@"
return current, nil
}
func (c *Collector) CollectMemory() (GuestMetric, error) {
current := make(GuestMetric, 0)
f, err := os.OpenFile("/proc/meminfo", os.O_RDONLY, 0666)
if err != nil {
return nil, err
}
defer f.Close()
scanner := bufio.NewScanner(f)
for scanner.Scan() {
parts := regexp.MustCompile(`\w+`).FindAllString(scanner.Text(), -1)
switch parts[0] {
case "MemTotal":
current["meminfo_total"] = parts[1]
case "MemFree":
current["meminfo_free"] = parts[1]
}
}
return prefixKeys("data/", current), nil
}
func EnumNetworkAddresses(iface string) (GuestMetric, error) {
const (
IP_RE string = `(\d{1,3}\.){3}\d{1,3}`
IPV6_RE string = `[\da-f:]+[\da-f]`
MAC_RE string = `[\da-fA-F:]+`
)
var (
IP_MAC_ADDR_RE = regexp.MustCompile(`link\/ether\s*(` + MAC_RE + `)`)
IP_IPV4_ADDR_RE = regexp.MustCompile(`inet\s*(` + IP_RE + `).*\se[a-zA-Z0-9]+[\s\n]`)
IP_IPV6_ADDR_RE = regexp.MustCompile(`inet6\s*(` + IPV6_RE + `)`)
IFCONFIG_IPV4_ADDR_RE = regexp.MustCompile(`inet addr:\s*(` + IP_RE + `)`)
IFCONFIG_IPV6_ADDR_RE = regexp.MustCompile(`inet6 addr:\s*(` + IPV6_RE + `)`)
IFCONFIG_MAC_ADDR_RE = regexp.MustCompile(`HWaddr\s*(` + MAC_RE + `)`)
)
d := make(GuestMetric, 0)
var v4re, v6re, macre *regexp.Regexp
var out string
var err error
if out, err = runCmd("ip", "addr", "show", iface); err == nil {
v4re = IP_IPV4_ADDR_RE
v6re = IP_IPV6_ADDR_RE
macre = IP_MAC_ADDR_RE
} else if out, err = runCmd("ifconfig", iface); err == nil {
v4re = IFCONFIG_IPV4_ADDR_RE
v6re = IFCONFIG_IPV6_ADDR_RE
macre = IFCONFIG_MAC_ADDR_RE
} else {
return nil, fmt.Errorf("Cannot find ip/ifconfig command")
}
m := v4re.FindAllStringSubmatch(out, -1)
if m != nil {
for _, parts := range m {
d["ip"] = parts[1]
}
}
m = v6re.FindAllStringSubmatch(out, -1)
if m != nil {
for i, parts := range m {
d[fmt.Sprintf("ipv6/%d/addr", i)] = parts[1]
}
}
m = macre.FindAllStringSubmatch(out, -1)
if m != nil {
for i, parts := range m {
d[fmt.Sprintf("mac/%d", i)] = parts[1]
}
}
return d, nil
}
func (c *Collector) CollectNetworkAddr() (GuestMetric, error) {
current := make(GuestMetric, 0)
paths, err := filepath.Glob("/sys/class/net/e*")
if err != nil {
return nil, err
}
for _, path := range paths {
iface := filepath.Base(path)
if addrs, err := EnumNetworkAddresses(iface); err == nil {
for tag, addr := range addrs {
current[fmt.Sprintf("%s/%s", iface, tag)] = addr
}
}
}
return prefixKeys("attr/", current), nil
}
func readSysfs(filename string) (string, error) {
f, err := os.OpenFile(filename, os.O_RDONLY, 0666)
if err != nil {
return "", err
}
defer f.Close()
scanner := bufio.NewScanner(f)
scanner.Scan()
return scanner.Text(), nil
}
func (c *Collector) CollectDisk() (GuestMetric, error) {
pi := make(GuestMetric, 0)
disks := make([]string, 0)
paths, err := filepath.Glob("/sys/block/*/device")
if err != nil {
return nil, err
}
for _, path := range paths {
disk := filepath.Base(strings.TrimSuffix(filepath.Dir(path), "/"))
disks = append(disks, disk)
}
var sortedDisks sort.StringSlice = disks
sortedDisks.Sort()
part_idx := 0
for _, disk := range sortedDisks[:] {
paths, err = filepath.Glob(fmt.Sprintf("/dev/%s?*", disk))
if err != nil {
return nil, err
}
for _, path := range paths {
p := filepath.Base(path)
line, err := readSysfs(fmt.Sprintf("/sys/block/%s/%s/size", disk, p))
if err != nil {
return nil, err
}
size, err := strconv.ParseInt(line, 10, 64)
if err != nil {
return nil, err
}
blocksize := 512
if bs, err := readSysfs(fmt.Sprintf("/sys/block/%s/queue/physical_block_size", p)); err == nil {
if bs1, err := strconv.Atoi(bs); err == nil {
blocksize = bs1
}
}
real_dev := ""
if c.Client != nil {
nodename, err := readSysfs(fmt.Sprintf("/sys/block/%s/device/nodename", disk))
if err == nil {
backend, err := c.Client.Read(fmt.Sprintf("%s/backend", nodename))
if err != nil {
return nil, err
}
real_dev, err = c.Client.Read(fmt.Sprintf("%s/dev", backend))
if err != nil {
return nil, err
}
}
}
name := path
blkid, err := runCmd("blkid", "-s", "UUID", path)
if err != nil {
// ignore blkid errors
blkid = ""
}
if strings.Contains(blkid, "=") {
parts := strings.SplitN(strings.TrimSpace(blkid), "=", 2)
name = fmt.Sprintf("%s(%s)", name, strings.Trim(parts[1], "\""))
}
i := map[string]string{
"extents/0": real_dev,
"name": name,
"size": strconv.FormatInt(size*int64(blocksize), 10),
}
output, err := runCmd("pvs", "--noheadings", "--units", "b", path)
if err == nil && output != "" {
parts := regexp.MustCompile(`\s+`).Split(output, -1)[1:]
i["free"] = strings.TrimSpace(parts[5])[:len(parts[5])-1]
i["filesystem"] = strings.TrimSpace(parts[2])
i["mount_points/0"] = "[LVM]"
} else {
output, err = runCmd("mount")
if err == nil {
m := regexp.MustCompile(`(?m)^(\S+) on (\S+) type (\S+)`).FindAllStringSubmatch(output, -1)
if m != nil {
for _, parts := range m {
if parts[1] == path {
i["mount_points/0"] = parts[2]
i["filesystem"] = parts[3]
break
}
}
}
}
output, err = runCmd("df", path)
if err == nil {
scanner := bufio.NewScanner(bytes.NewReader([]byte(output)))
scanner.Scan()
scanner.Scan()
parts := regexp.MustCompile(`\s+`).Split(scanner.Text(), -1)
free, err := strconv.ParseInt(parts[3], 10, 64)
if err == nil {
i["free"] = strconv.FormatInt(free*1024, 10)
}
}
}
for k, v := range i {
pi[fmt.Sprintf("data/volumes/%d/%s", part_idx, k)] = v
}
part_idx += 1
}
}
return pi, nil
}
|
