package procfs
import (
"fmt"
"reflect"
"strings"
"testing"
"time"
)
func TestMountStats(t *testing.T) {
tests := []struct {
name string
s string
mounts []*Mount
invalid bool
}{
{
name: "no devices",
s: `hello`,
},
{
name: "device has too few fields",
s: `device foo`,
invalid: true,
},
{
name: "device incorrect format",
s: `device rootfs BAD on / with fstype rootfs`,
invalid: true,
},
{
name: "device incorrect format",
s: `device rootfs mounted BAD / with fstype rootfs`,
invalid: true,
},
{
name: "device incorrect format",
s: `device rootfs mounted on / BAD fstype rootfs`,
invalid: true,
},
{
name: "device incorrect format",
s: `device rootfs mounted on / with BAD rootfs`,
invalid: true,
},
{
name: "device rootfs cannot have stats",
s: `device rootfs mounted on / with fstype rootfs stats`,
invalid: true,
},
{
name: "NFSv4 device with too little info",
s: "device 192.168.1.1:/srv mounted on /mnt/nfs with fstype nfs4 statvers=1.1\nhello",
invalid: true,
},
{
name: "NFSv4 device with bad bytes",
s: "device 192.168.1.1:/srv mounted on /mnt/nfs with fstype nfs4 statvers=1.1\nbytes: 0",
invalid: true,
},
{
name: "NFSv4 device with bad events",
s: "device 192.168.1.1:/srv mounted on /mnt/nfs with fstype nfs4 statvers=1.1\nevents: 0",
invalid: true,
},
{
name: "NFSv4 device with bad per-op stats",
s: "device 192.168.1.1:/srv mounted on /mnt/nfs with fstype nfs4 statvers=1.1\nper-op statistics\nFOO 0",
invalid: true,
},
{
name: "NFSv4 device with bad transport stats",
s: "device 192.168.1.1:/srv mounted on /mnt/nfs with fstype nfs4 statvers=1.1\nxprt: tcp",
invalid: true,
},
{
name: "NFSv4 device with bad transport version",
s: "device 192.168.1.1:/srv mounted on /mnt/nfs with fstype nfs4 statvers=foo\nxprt: tcp 0",
invalid: true,
},
{
name: "NFSv4 device with bad transport stats version 1.0",
s: "device 192.168.1.1:/srv mounted on /mnt/nfs with fstype nfs4 statvers=1.0\nxprt: tcp 0 0 0 0 0 0 0 0 0 0 0 0 0",
invalid: true,
},
{
name: "NFSv4 device with bad transport stats version 1.1",
s: "device 192.168.1.1:/srv mounted on /mnt/nfs with fstype nfs4 statvers=1.1\nxprt: tcp 0 0 0 0 0 0 0 0 0 0",
invalid: true,
},
{
name: "NFSv3 device with transport stats version 1.0 OK",
s: "device 192.168.1.1:/srv mounted on /mnt/nfs with fstype nfs statvers=1.0\nxprt: tcp 1 2 3 4 5 6 7 8 9 10",
mounts: []*Mount{{
Device: "192.168.1.1:/srv",
Mount: "/mnt/nfs",
Type: "nfs",
Stats: &MountStatsNFS{
StatVersion: "1.0",
Transport: NFSTransportStats{
Port: 1,
Bind: 2,
Connect: 3,
ConnectIdleTime: 4,
IdleTime: 5 * time.Second,
Sends: 6,
Receives: 7,
BadTransactionIDs: 8,
CumulativeActiveRequests: 9,
CumulativeBacklog: 10,
},
},
}},
},
{
name: "device rootfs OK",
s: `device rootfs mounted on / with fstype rootfs`,
mounts: []*Mount{{
Device: "rootfs",
Mount: "/",
Type: "rootfs",
}},
},
{
name: "NFSv3 device with minimal stats OK",
s: `device 192.168.1.1:/srv mounted on /mnt/nfs with fstype nfs statvers=1.1`,
mounts: []*Mount{{
Device: "192.168.1.1:/srv",
Mount: "/mnt/nfs",
Type: "nfs",
Stats: &MountStatsNFS{
StatVersion: "1.1",
},
}},
},
{
name: "fixtures OK",
mounts: []*Mount{
{
Device: "rootfs",
Mount: "/",
Type: "rootfs",
},
{
Device: "sysfs",
Mount: "/sys",
Type: "sysfs",
},
{
Device: "proc",
Mount: "/proc",
Type: "proc",
},
{
Device: "/dev/sda1",
Mount: "/",
Type: "ext4",
},
{
Device: "192.168.1.1:/srv/test",
Mount: "/mnt/nfs/test",
Type: "nfs4",
Stats: &MountStatsNFS{
StatVersion: "1.1",
Age: 13968 * time.Second,
Bytes: NFSBytesStats{
Read: 1207640230,
ReadTotal: 1210214218,
ReadPages: 295483,
},
Events: NFSEventsStats{
InodeRevalidate: 52,
DnodeRevalidate: 226,
VFSOpen: 1,
VFSLookup: 13,
VFSAccess: 398,
VFSReadPages: 331,
VFSWritePages: 47,
VFSFlush: 77,
VFSFileRelease: 77,
},
Operations: []NFSOperationStats{
{
Operation: "NULL",
},
{
Operation: "READ",
Requests: 1298,
Transmissions: 1298,
BytesSent: 207680,
BytesReceived: 1210292152,
CumulativeQueueTime: 6 * time.Millisecond,
CumulativeTotalResponseTime: 79386 * time.Millisecond,
CumulativeTotalRequestTime: 79407 * time.Millisecond,
},
{
Operation: "WRITE",
},
},
Transport: NFSTransportStats{
Port: 832,
Connect: 1,
IdleTime: 11 * time.Second,
Sends: 6428,
Receives: 6428,
CumulativeActiveRequests: 12154,
MaximumRPCSlotsUsed: 24,
CumulativeSendingQueue: 26,
CumulativePendingQueue: 5726,
},
},
},
},
},
}
for i, tt := range tests {
t.Logf("[%02d] test %q", i, tt.name)
var mounts []*Mount
var err error
if tt.s != "" {
mounts, err = parseMountStats(strings.NewReader(tt.s))
} else {
proc, e := FS("fixtures").NewProc(26231)
if e != nil {
t.Fatalf("failed to create proc: %v", err)
}
mounts, err = proc.MountStats()
}
if tt.invalid && err == nil {
t.Error("expected an error, but none occurred")
}
if !tt.invalid && err != nil {
t.Errorf("unexpected error: %v", err)
}
if want, have := tt.mounts, mounts; !reflect.DeepEqual(want, have) {
t.Errorf("mounts:\nwant:\n%v\nhave:\n%v", mountsStr(want), mountsStr(have))
}
}
}
func mountsStr(mounts []*Mount) string {
var out string
for i, m := range mounts {
out += fmt.Sprintf("[%d] %q on %q (%q)", i, m.Device, m.Mount, m.Type)
stats, ok := m.Stats.(*MountStatsNFS)
if !ok {
out += "\n"
continue
}
out += fmt.Sprintf("\n\t- v%s, age: %s", stats.StatVersion, stats.Age)
out += fmt.Sprintf("\n\t- bytes: %v", stats.Bytes)
out += fmt.Sprintf("\n\t- events: %v", stats.Events)
out += fmt.Sprintf("\n\t- transport: %v", stats.Transport)
out += fmt.Sprintf("\n\t- per-operation stats:")
for _, o := range stats.Operations {
out += fmt.Sprintf("\n\t\t- %v", o)
}
out += "\n"
}
return out
}