// 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 }