268 lines
8.6 KiB
Go
268 lines
8.6 KiB
Go
package proc
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import (
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"github.com/kylelemons/godebug/pretty"
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common "github.com/ncabatoff/process-exporter"
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. "gopkg.in/check.v1"
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"time"
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)
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type namer map[string]struct{}
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func newNamer(names ...string) namer {
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nr := make(namer, len(names))
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for _, name := range names {
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nr[name] = struct{}{}
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}
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return nr
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}
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func (n namer) MatchAndName(nacl common.NameAndCmdline) (bool, string) {
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if _, ok := n[nacl.Name]; ok {
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return true, nacl.Name
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}
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return false, ""
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}
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// Test core group() functionality, i.e things not related to namers or parents
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// or processes that have exited.
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func (s MySuite) TestGrouperBasic(c *C) {
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newProc := func(pid int, name string, m ProcMetrics) ProcIdInfo {
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pis := newProcIdStatic(pid, 0, 0, name, nil)
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return ProcIdInfo{
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ProcId: pis.ProcId,
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ProcStatic: pis.ProcStatic,
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ProcMetrics: m,
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}
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}
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gr := NewGrouper(false, newNamer("g1", "g2"))
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p1 := newProc(1, "g1", ProcMetrics{1, 2, 3, 4, 5, 4, 400})
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p2 := newProc(2, "g2", ProcMetrics{2, 3, 4, 5, 6, 40, 400})
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p3 := newProc(3, "g3", ProcMetrics{})
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_, err := gr.Update(procInfoIter(p1, p2, p3))
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c.Assert(err, IsNil)
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got1 := gr.groups()
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want1 := GroupCountMap{
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"g1": GroupCounts{Counts{0, 0, 0}, 1, 4, 5, time.Time{}, 4, 0.01},
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"g2": GroupCounts{Counts{0, 0, 0}, 1, 5, 6, time.Time{}, 40, 0.1},
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}
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c.Check(got1, DeepEquals, want1, Commentf("diff %s", pretty.Compare(got1, want1)))
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// Now increment counts and memory and make sure group counts updated.
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p1.ProcMetrics = ProcMetrics{2, 3, 4, 5, 6, 4, 400}
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p2.ProcMetrics = ProcMetrics{4, 5, 6, 7, 8, 40, 400}
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_, err = gr.Update(procInfoIter(p1, p2, p3))
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c.Assert(err, IsNil)
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got2 := gr.groups()
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want2 := GroupCountMap{
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"g1": GroupCounts{Counts{1, 1, 1}, 1, 5, 6, time.Time{}, 4, 0.01},
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"g2": GroupCounts{Counts{2, 2, 2}, 1, 7, 8, time.Time{}, 40, 0.1},
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}
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c.Check(got2, DeepEquals, want2, Commentf("diff %s", pretty.Compare(got2, want2)))
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// Now add a new proc and update p2's metrics. The
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// counts for p4 won't be factored into the total yet
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// because we only add to counts starting with the
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// second time we see a proc. Memory and FDs are affected
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// though.
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p4 := newProc(4, "g2", ProcMetrics{1, 1, 1, 1, 1, 80, 400})
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p2.ProcMetrics = ProcMetrics{5, 6, 7, 8, 9, 40, 400}
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_, err = gr.Update(procInfoIter(p1, p2, p3, p4))
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c.Assert(err, IsNil)
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got3 := gr.groups()
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want3 := GroupCountMap{
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"g1": GroupCounts{Counts{0, 0, 0}, 1, 5, 6, time.Time{}, 4, 0.01},
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"g2": GroupCounts{Counts{1, 1, 1}, 2, 9, 10, time.Time{}, 120, 0.2},
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}
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c.Check(got3, DeepEquals, want3, Commentf("diff %s", pretty.Compare(got3, want3)))
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p4.ProcMetrics = ProcMetrics{2, 2, 2, 2, 2, 100, 400}
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p2.ProcMetrics = ProcMetrics{6, 7, 8, 8, 9, 40, 400}
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_, err = gr.Update(procInfoIter(p1, p2, p3, p4))
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c.Assert(err, IsNil)
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got4 := gr.groups()
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want4 := GroupCountMap{
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"g1": GroupCounts{Counts{0, 0, 0}, 1, 5, 6, time.Time{}, 4, 0.01},
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"g2": GroupCounts{Counts{2, 2, 2}, 2, 10, 11, time.Time{}, 140, 0.25},
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}
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c.Check(got4, DeepEquals, want4, Commentf("diff %s", pretty.Compare(got4, want4)))
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}
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// Test that if a proc is tracked, we track its descendants, and if not as
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// before it gets ignored. We won't bother testing metric accumulation since
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// that should be covered by TestGrouperBasic.
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func (s MySuite) TestGrouperParents(c *C) {
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newProc := func(pid, ppid int, name string) ProcIdInfo {
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pis := newProcIdStatic(pid, ppid, 0, name, nil)
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return ProcIdInfo{
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ProcId: pis.ProcId,
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ProcStatic: pis.ProcStatic,
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ProcMetrics: ProcMetrics{},
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}
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}
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gr := NewGrouper(true, newNamer("g1", "g2"))
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p1 := newProc(1, 0, "g1")
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p2 := newProc(2, 0, "g2")
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p3 := newProc(3, 0, "g3")
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_, err := gr.Update(procInfoIter(p1, p2, p3))
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c.Assert(err, IsNil)
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got1 := gr.groups()
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want1 := GroupCountMap{
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"g1": GroupCounts{Counts{}, 1, 0, 0, time.Time{}, 0, 0},
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"g2": GroupCounts{Counts{}, 1, 0, 0, time.Time{}, 0, 0},
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}
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c.Check(got1, DeepEquals, want1, Commentf("diff %s", pretty.Compare(got1, want1)))
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// Now we'll give each of the procs a child and test that the count of procs
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// in each group is incremented.
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p4 := newProc(4, p1.Pid, "")
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p5 := newProc(5, p2.Pid, "")
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p6 := newProc(6, p3.Pid, "")
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_, err = gr.Update(procInfoIter(p1, p2, p3, p4, p5, p6))
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c.Assert(err, IsNil)
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got2 := gr.groups()
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want2 := GroupCountMap{
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"g1": GroupCounts{Counts{}, 2, 0, 0, time.Time{}, 0, 0},
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"g2": GroupCounts{Counts{}, 2, 0, 0, time.Time{}, 0, 0},
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}
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c.Check(got2, DeepEquals, want2, Commentf("diff %s", pretty.Compare(got2, want2)))
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// Now we'll let p4 die, and give p5 a child and grandchild and great-grandchild.
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p7 := newProc(7, p5.Pid, "")
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p8 := newProc(8, p7.Pid, "")
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p9 := newProc(9, p8.Pid, "")
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_, err = gr.Update(procInfoIter(p1, p2, p3, p5, p6, p7, p8, p9))
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c.Assert(err, IsNil)
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got3 := gr.groups()
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want3 := GroupCountMap{
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"g1": GroupCounts{Counts{}, 1, 0, 0, time.Time{}, 0, 0},
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"g2": GroupCounts{Counts{}, 5, 0, 0, time.Time{}, 0, 0},
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}
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c.Check(got3, DeepEquals, want3, Commentf("diff %s", pretty.Compare(got3, want3)))
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}
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// Test that Groups() reports on new CPU/IO activity, even if some processes in the
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// group have gone away.
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func (s MySuite) TestGrouperGroup(c *C) {
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newProc := func(pid int, name string, m ProcMetrics) ProcIdInfo {
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pis := newProcIdStatic(pid, 0, 0, name, nil)
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return ProcIdInfo{
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ProcId: pis.ProcId,
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ProcStatic: pis.ProcStatic,
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ProcMetrics: m,
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}
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}
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gr := NewGrouper(false, newNamer("g1"))
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// First call should return zero CPU/IO.
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p1 := newProc(1, "g1", ProcMetrics{1, 2, 3, 4, 5, 8, 400})
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_, err := gr.Update(procInfoIter(p1))
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c.Assert(err, IsNil)
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got1 := gr.Groups()
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want1 := GroupCountMap{
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"g1": GroupCounts{Counts{0, 0, 0}, 1, 4, 5, time.Time{}, 8, 0.02},
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}
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c.Check(got1, DeepEquals, want1)
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// Second call should return the delta CPU/IO from first observance,
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// as well as latest memory/proccount.
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p1.ProcMetrics = ProcMetrics{2, 3, 4, 5, 6, 12, 400}
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_, err = gr.Update(procInfoIter(p1))
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c.Assert(err, IsNil)
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got2 := gr.Groups()
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want2 := GroupCountMap{
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"g1": GroupCounts{Counts{1, 1, 1}, 1, 5, 6, time.Time{}, 12, 0.03},
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}
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c.Check(got2, DeepEquals, want2)
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// Third call: process hasn't changed, nor should our group stats.
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_, err = gr.Update(procInfoIter(p1))
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c.Assert(err, IsNil)
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got3 := gr.Groups()
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want3 := GroupCountMap{
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"g1": GroupCounts{Counts{1, 1, 1}, 1, 5, 6, time.Time{}, 12, 0.03},
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}
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c.Check(got3, DeepEquals, want3, Commentf("diff %s", pretty.Compare(got3, want3)))
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}
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// Test that Groups() reports on new CPU/IO activity, even if some processes in the
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// group have gone away.
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func (s MySuite) TestGrouperNonDecreasing(c *C) {
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newProc := func(pid int, name string, m ProcMetrics) ProcIdInfo {
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pis := newProcIdStatic(pid, 0, 0, name, nil)
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return ProcIdInfo{
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ProcId: pis.ProcId,
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ProcStatic: pis.ProcStatic,
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ProcMetrics: m,
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}
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}
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gr := NewGrouper(false, newNamer("g1", "g2"))
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p1 := newProc(1, "g1", ProcMetrics{1, 2, 3, 4, 5, 4, 400})
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p2 := newProc(2, "g2", ProcMetrics{2, 3, 4, 5, 6, 40, 400})
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_, err := gr.Update(procInfoIter(p1, p2))
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c.Assert(err, IsNil)
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got1 := gr.Groups()
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want1 := GroupCountMap{
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"g1": GroupCounts{Counts{0, 0, 0}, 1, 4, 5, time.Time{}, 4, 0.01},
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"g2": GroupCounts{Counts{0, 0, 0}, 1, 5, 6, time.Time{}, 40, 0.1},
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}
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c.Check(got1, DeepEquals, want1, Commentf("diff %s", pretty.Compare(got1, want1)))
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// Now add a new proc p3 to g2, and increment p1/p2's metrics.
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p1.ProcMetrics = ProcMetrics{2, 3, 4, 5, 6, 8, 400}
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p2.ProcMetrics = ProcMetrics{4, 5, 6, 7, 8, 80, 400}
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p3 := newProc(3, "g2", ProcMetrics{1, 1, 1, 1, 1, 8, 400})
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_, err = gr.Update(procInfoIter(p1, p2, p3))
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c.Assert(err, IsNil)
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got2 := gr.Groups()
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want2 := GroupCountMap{
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"g1": GroupCounts{Counts{1, 1, 1}, 1, 5, 6, time.Time{}, 8, 0.02},
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"g2": GroupCounts{Counts{2, 2, 2}, 2, 8, 9, time.Time{}, 88, 0.2},
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}
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c.Check(got2, DeepEquals, want2, Commentf("diff %s", pretty.Compare(got2, want2)))
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// Now update p3's metrics and kill p2.
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p3.ProcMetrics = ProcMetrics{2, 3, 4, 5, 6, 8, 400}
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_, err = gr.Update(procInfoIter(p1, p3))
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c.Assert(err, IsNil)
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got3 := gr.Groups()
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want3 := GroupCountMap{
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"g1": GroupCounts{Counts{1, 1, 1}, 1, 5, 6, time.Time{}, 8, 0.02},
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"g2": GroupCounts{Counts{3, 4, 5}, 1, 5, 6, time.Time{}, 8, 0.02},
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}
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c.Check(got3, DeepEquals, want3, Commentf("diff %s", pretty.Compare(got3, want3)))
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// Now update p3's metrics and kill p1.
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p3.ProcMetrics = ProcMetrics{4, 4, 4, 2, 1, 4, 400}
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_, err = gr.Update(procInfoIter(p3))
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c.Assert(err, IsNil)
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got4 := gr.Groups()
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want4 := GroupCountMap{
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"g1": GroupCounts{Counts{1, 1, 1}, 0, 0, 0, time.Time{}, 0, 0},
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"g2": GroupCounts{Counts{5, 5, 5}, 1, 2, 1, time.Time{}, 4, 0.01},
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}
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c.Check(got4, DeepEquals, want4, Commentf("diff %s\n%s", pretty.Compare(got4, want4), pretty.Sprint(gr)))
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}
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