| // Copyright 2018 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 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 bad transport protocol", |
| s: "device 192.168.1.1:/srv mounted on /mnt/nfs with fstype nfs4 statvers=1.1\nxprt: tcpx 0 0 0 0 0 0 0 0 0 0", |
| invalid: true, |
| }, |
| { |
| name: "NFSv3 device using TCP 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{ |
| Protocol: "tcp", |
| Port: 1, |
| Bind: 2, |
| Connect: 3, |
| ConnectIdleTime: 4, |
| IdleTime: 5 * time.Second, |
| Sends: 6, |
| Receives: 7, |
| BadTransactionIDs: 8, |
| CumulativeActiveRequests: 9, |
| CumulativeBacklog: 10, |
| MaximumRPCSlotsUsed: 0, // these three are not |
| CumulativeSendingQueue: 0, // present in statvers=1.0 |
| CumulativePendingQueue: 0, // |
| }, |
| }, |
| }}, |
| }, |
| { |
| name: "NFSv3 device using UDP 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: udp 1 2 3 4 5 6 7", |
| mounts: []*Mount{{ |
| Device: "192.168.1.1:/srv", |
| Mount: "/mnt/nfs", |
| Type: "nfs", |
| Stats: &MountStatsNFS{ |
| StatVersion: "1.0", |
| Transport: NFSTransportStats{ |
| Protocol: "udp", |
| Port: 1, |
| Bind: 2, |
| Connect: 0, |
| ConnectIdleTime: 0, |
| IdleTime: 0, |
| Sends: 3, |
| Receives: 4, |
| BadTransactionIDs: 5, |
| CumulativeActiveRequests: 6, |
| CumulativeBacklog: 7, |
| MaximumRPCSlotsUsed: 0, // these three are not |
| CumulativeSendingQueue: 0, // present in statvers=1.0 |
| CumulativePendingQueue: 0, // |
| }, |
| }, |
| }}, |
| }, |
| { |
| name: "NFSv3 device using TCP with transport stats version 1.1 OK", |
| s: "device 192.168.1.1:/srv mounted on /mnt/nfs with fstype nfs statvers=1.1\nxprt: tcp 1 2 3 4 5 6 7 8 9 10 11 12 13", |
| mounts: []*Mount{{ |
| Device: "192.168.1.1:/srv", |
| Mount: "/mnt/nfs", |
| Type: "nfs", |
| Stats: &MountStatsNFS{ |
| StatVersion: "1.1", |
| Transport: NFSTransportStats{ |
| Protocol: "tcp", |
| Port: 1, |
| Bind: 2, |
| Connect: 3, |
| ConnectIdleTime: 4, |
| IdleTime: 5 * time.Second, |
| Sends: 6, |
| Receives: 7, |
| BadTransactionIDs: 8, |
| CumulativeActiveRequests: 9, |
| CumulativeBacklog: 10, |
| MaximumRPCSlotsUsed: 11, |
| CumulativeSendingQueue: 12, |
| CumulativePendingQueue: 13, |
| }, |
| }, |
| }}, |
| }, |
| { |
| name: "NFSv3 device using UDP with transport stats version 1.1 OK", |
| s: "device 192.168.1.1:/srv mounted on /mnt/nfs with fstype nfs statvers=1.1\nxprt: udp 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: "1.1", |
| Transport: NFSTransportStats{ |
| Protocol: "udp", |
| Port: 1, |
| Bind: 2, |
| Connect: 0, // these three are not |
| ConnectIdleTime: 0, // present for UDP |
| IdleTime: 0, // |
| Sends: 3, |
| Receives: 4, |
| BadTransactionIDs: 5, |
| CumulativeActiveRequests: 6, |
| CumulativeBacklog: 7, |
| MaximumRPCSlotsUsed: 8, |
| CumulativeSendingQueue: 9, |
| CumulativePendingQueue: 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{ |
| Protocol: "tcp", |
| 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 |
| } |
