397 lines
8.9 KiB
Go
397 lines
8.9 KiB
Go
package procstat
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import (
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"fmt"
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"io/ioutil"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"strings"
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"testing"
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"time"
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"github.com/influxdata/telegraf/testutil"
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"github.com/shirou/gopsutil/cpu"
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"github.com/shirou/gopsutil/process"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func init() {
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execCommand = mockExecCommand
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}
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func mockExecCommand(arg0 string, args ...string) *exec.Cmd {
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args = append([]string{"-test.run=TestMockExecCommand", "--", arg0}, args...)
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cmd := exec.Command(os.Args[0], args...)
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cmd.Stderr = os.Stderr
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return cmd
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}
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func TestMockExecCommand(t *testing.T) {
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var cmd []string
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for _, arg := range os.Args {
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if string(arg) == "--" {
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cmd = []string{}
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continue
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}
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if cmd == nil {
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continue
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}
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cmd = append(cmd, string(arg))
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}
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if cmd == nil {
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return
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}
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cmdline := strings.Join(cmd, " ")
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if cmdline == "systemctl show TestGather_systemdUnitPIDs" {
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fmt.Printf(`PIDFile=
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GuessMainPID=yes
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MainPID=11408
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ControlPID=0
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ExecMainPID=11408
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`)
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os.Exit(0)
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}
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fmt.Printf("command not found\n")
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os.Exit(1)
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}
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type testPgrep struct {
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pids []PID
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err error
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}
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func pidFinder(pids []PID, err error) func() (PIDFinder, error) {
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return func() (PIDFinder, error) {
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return &testPgrep{
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pids: pids,
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err: err,
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}, nil
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}
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}
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func (pg *testPgrep) PidFile(path string) ([]PID, error) {
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return pg.pids, pg.err
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}
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func (p *testProc) Cmdline() (string, error) {
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return "test_proc", nil
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}
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func (pg *testPgrep) Pattern(pattern string) ([]PID, error) {
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return pg.pids, pg.err
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}
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func (pg *testPgrep) Uid(user string) ([]PID, error) {
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return pg.pids, pg.err
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}
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func (pg *testPgrep) FullPattern(pattern string) ([]PID, error) {
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return pg.pids, pg.err
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}
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type testProc struct {
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pid PID
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tags map[string]string
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}
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func newTestProc(pid PID) (Process, error) {
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proc := &testProc{
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tags: make(map[string]string),
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}
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return proc, nil
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}
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func (p *testProc) PID() PID {
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return p.pid
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}
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func (p *testProc) Username() (string, error) {
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return "testuser", nil
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}
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func (p *testProc) Tags() map[string]string {
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return p.tags
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}
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func (p *testProc) PageFaults() (*process.PageFaultsStat, error) {
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return &process.PageFaultsStat{}, nil
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}
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func (p *testProc) IOCounters() (*process.IOCountersStat, error) {
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return &process.IOCountersStat{}, nil
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}
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func (p *testProc) MemoryInfo() (*process.MemoryInfoStat, error) {
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return &process.MemoryInfoStat{}, nil
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}
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func (p *testProc) Name() (string, error) {
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return "test_proc", nil
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}
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func (p *testProc) NumCtxSwitches() (*process.NumCtxSwitchesStat, error) {
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return &process.NumCtxSwitchesStat{}, nil
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}
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func (p *testProc) NumFDs() (int32, error) {
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return 0, nil
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}
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func (p *testProc) NumThreads() (int32, error) {
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return 0, nil
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}
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func (p *testProc) Percent(interval time.Duration) (float64, error) {
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return 0, nil
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}
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func (p *testProc) Times() (*cpu.TimesStat, error) {
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return &cpu.TimesStat{}, nil
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}
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func (p *testProc) RlimitUsage(gatherUsage bool) ([]process.RlimitStat, error) {
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return []process.RlimitStat{}, nil
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}
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var pid PID = PID(42)
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var exe string = "foo"
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func TestGather_CreateProcessErrorOk(t *testing.T) {
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var acc testutil.Accumulator
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p := Procstat{
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Exe: exe,
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createPIDFinder: pidFinder([]PID{pid}, nil),
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createProcess: func(PID) (Process, error) {
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return nil, fmt.Errorf("createProcess error")
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},
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}
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require.NoError(t, acc.GatherError(p.Gather))
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}
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func TestGather_CreatePIDFinderError(t *testing.T) {
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var acc testutil.Accumulator
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p := Procstat{
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createPIDFinder: func() (PIDFinder, error) {
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return nil, fmt.Errorf("createPIDFinder error")
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},
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createProcess: newTestProc,
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}
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require.Error(t, acc.GatherError(p.Gather))
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}
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func TestGather_ProcessName(t *testing.T) {
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var acc testutil.Accumulator
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p := Procstat{
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Exe: exe,
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ProcessName: "custom_name",
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createPIDFinder: pidFinder([]PID{pid}, nil),
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createProcess: newTestProc,
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}
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require.NoError(t, acc.GatherError(p.Gather))
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assert.Equal(t, "custom_name", acc.TagValue("procstat", "process_name"))
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}
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func TestGather_NoProcessNameUsesReal(t *testing.T) {
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var acc testutil.Accumulator
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pid := PID(os.Getpid())
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p := Procstat{
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Exe: exe,
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createPIDFinder: pidFinder([]PID{pid}, nil),
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createProcess: newTestProc,
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}
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require.NoError(t, acc.GatherError(p.Gather))
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assert.True(t, acc.HasTag("procstat", "process_name"))
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}
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func TestGather_NoPidTag(t *testing.T) {
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var acc testutil.Accumulator
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p := Procstat{
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Exe: exe,
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createPIDFinder: pidFinder([]PID{pid}, nil),
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createProcess: newTestProc,
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}
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require.NoError(t, acc.GatherError(p.Gather))
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assert.True(t, acc.HasInt32Field("procstat", "pid"))
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assert.False(t, acc.HasTag("procstat", "pid"))
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}
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func TestGather_PidTag(t *testing.T) {
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var acc testutil.Accumulator
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p := Procstat{
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Exe: exe,
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PidTag: true,
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createPIDFinder: pidFinder([]PID{pid}, nil),
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createProcess: newTestProc,
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}
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require.NoError(t, acc.GatherError(p.Gather))
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assert.Equal(t, "42", acc.TagValue("procstat", "pid"))
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assert.False(t, acc.HasInt32Field("procstat", "pid"))
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}
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func TestGather_Prefix(t *testing.T) {
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var acc testutil.Accumulator
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p := Procstat{
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Exe: exe,
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Prefix: "custom_prefix",
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createPIDFinder: pidFinder([]PID{pid}, nil),
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createProcess: newTestProc,
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}
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require.NoError(t, acc.GatherError(p.Gather))
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assert.True(t, acc.HasInt32Field("procstat", "custom_prefix_num_fds"))
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}
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func TestGather_Exe(t *testing.T) {
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var acc testutil.Accumulator
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p := Procstat{
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Exe: exe,
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createPIDFinder: pidFinder([]PID{pid}, nil),
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createProcess: newTestProc,
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}
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require.NoError(t, acc.GatherError(p.Gather))
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assert.Equal(t, exe, acc.TagValue("procstat", "exe"))
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}
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func TestGather_User(t *testing.T) {
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var acc testutil.Accumulator
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user := "ada"
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p := Procstat{
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User: user,
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createPIDFinder: pidFinder([]PID{pid}, nil),
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createProcess: newTestProc,
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}
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require.NoError(t, acc.GatherError(p.Gather))
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assert.Equal(t, user, acc.TagValue("procstat", "user"))
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}
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func TestGather_Pattern(t *testing.T) {
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var acc testutil.Accumulator
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pattern := "foo"
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p := Procstat{
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Pattern: pattern,
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createPIDFinder: pidFinder([]PID{pid}, nil),
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createProcess: newTestProc,
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}
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require.NoError(t, acc.GatherError(p.Gather))
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assert.Equal(t, pattern, acc.TagValue("procstat", "pattern"))
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}
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func TestGather_MissingPidMethod(t *testing.T) {
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var acc testutil.Accumulator
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p := Procstat{
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createPIDFinder: pidFinder([]PID{pid}, nil),
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createProcess: newTestProc,
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}
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require.Error(t, acc.GatherError(p.Gather))
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}
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func TestGather_PidFile(t *testing.T) {
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var acc testutil.Accumulator
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pidfile := "/path/to/pidfile"
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p := Procstat{
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PidFile: pidfile,
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createPIDFinder: pidFinder([]PID{pid}, nil),
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createProcess: newTestProc,
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}
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require.NoError(t, acc.GatherError(p.Gather))
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assert.Equal(t, pidfile, acc.TagValue("procstat", "pidfile"))
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}
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func TestGather_PercentFirstPass(t *testing.T) {
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var acc testutil.Accumulator
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pid := PID(os.Getpid())
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p := Procstat{
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Pattern: "foo",
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PidTag: true,
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createPIDFinder: pidFinder([]PID{pid}, nil),
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createProcess: NewProc,
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}
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require.NoError(t, acc.GatherError(p.Gather))
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assert.True(t, acc.HasFloatField("procstat", "cpu_time_user"))
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assert.False(t, acc.HasFloatField("procstat", "cpu_usage"))
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}
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func TestGather_PercentSecondPass(t *testing.T) {
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var acc testutil.Accumulator
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pid := PID(os.Getpid())
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p := Procstat{
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Pattern: "foo",
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PidTag: true,
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createPIDFinder: pidFinder([]PID{pid}, nil),
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createProcess: NewProc,
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}
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require.NoError(t, acc.GatherError(p.Gather))
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require.NoError(t, acc.GatherError(p.Gather))
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assert.True(t, acc.HasFloatField("procstat", "cpu_time_user"))
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assert.True(t, acc.HasFloatField("procstat", "cpu_usage"))
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}
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func TestGather_systemdUnitPIDs(t *testing.T) {
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p := Procstat{
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createPIDFinder: pidFinder([]PID{}, nil),
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SystemdUnit: "TestGather_systemdUnitPIDs",
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}
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var acc testutil.Accumulator
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pids, tags, err := p.findPids(&acc)
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require.NoError(t, err)
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assert.Equal(t, []PID{11408}, pids)
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assert.Equal(t, "TestGather_systemdUnitPIDs", tags["systemd_unit"])
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}
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func TestGather_cgroupPIDs(t *testing.T) {
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//no cgroups in windows
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if runtime.GOOS == "windows" {
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t.Skip("no cgroups in windows")
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}
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td, err := ioutil.TempDir("", "")
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require.NoError(t, err)
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defer os.RemoveAll(td)
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err = ioutil.WriteFile(filepath.Join(td, "cgroup.procs"), []byte("1234\n5678\n"), 0644)
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require.NoError(t, err)
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p := Procstat{
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createPIDFinder: pidFinder([]PID{}, nil),
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CGroup: td,
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}
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var acc testutil.Accumulator
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pids, tags, err := p.findPids(&acc)
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require.NoError(t, err)
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assert.Equal(t, []PID{1234, 5678}, pids)
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assert.Equal(t, td, tags["cgroup"])
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}
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func TestProcstatLookupMetric(t *testing.T) {
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p := Procstat{
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createPIDFinder: pidFinder([]PID{543}, nil),
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Exe: "-Gsys",
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}
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var acc testutil.Accumulator
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err := acc.GatherError(p.Gather)
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require.NoError(t, err)
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require.Equal(t, len(p.procs)+1, len(acc.Metrics))
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}
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