jochen
7b5e1d3362
A live restart of the system bus during an upgrade hung every login on a workstation until a reboot. The module owns the bus's packages, declares the bus running with no restart or reload trigger, publishes only curated events (health, services, denials; never traffic) and serves tools to look at both buses.
68 lines
1.9 KiB
Go
68 lines
1.9 KiB
Go
package main
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import (
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"context"
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"encoding/json"
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"os"
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"path/filepath"
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"testing"
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"time"
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)
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// Run on a real machine with MESH_LIVE=1: every tool reads this machine's buses, and the watcher's
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// connection answers. Nothing is changed.
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func TestLiveTools(t *testing.T) {
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if os.Getenv("MESH_LIVE") == "" {
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t.Skip("set MESH_LIVE=1 on a machine with a system bus")
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}
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ctx := context.Background()
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m := Here()
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b, err := DialSystemBus()
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if err != nil {
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t.Fatal(err)
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}
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defer b.Close()
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if err := b.Ping(ctx); err != nil {
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t.Fatal(err)
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}
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id, _ := b.ID(ctx)
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pid, _ := b.PID(ctx, busName)
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t.Logf("bus %s, driver pid %d in %s", id, pid, m.UnitOf(pid))
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show := func(name string, v any, err error) {
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raw, _ := json.Marshal(v)
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if len(raw) > 1500 {
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raw = append(raw[:1500], "…"...)
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}
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t.Logf("%s: %v\n%s", name, err, raw)
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}
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n, err := m.Names(ctx, "system")
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show("names system", n, err)
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n, err = m.Names(ctx, "session")
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show("names session", n, err)
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o, err := m.Introspect(ctx, "system", "org.freedesktop.login1", "/org/freedesktop/login1")
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show("introspect", o, err)
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w, err := m.Monitor(ctx, "system", 2, "", nil)
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show("monitor", w, err)
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show("health", m.Health(ctx, nil), nil)
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show("check", m.Check(ctx, nil), nil)
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}
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// Run with MESH_LIVE=1: the watcher connects, pings and baselines the names, and says nothing.
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func TestLiveWatcher(t *testing.T) {
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if os.Getenv("MESH_LIVE") == "" {
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t.Skip("set MESH_LIVE=1 on a machine with a system bus")
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}
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m := Here()
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var said []string
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w := NewWatcher(m, func(e string, b any) error { said = append(said, e); return nil }, DialSystemBus, m.Denials)
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w.state = filepath.Join(t.TempDir(), "bus")
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ctx, cancel := context.WithTimeout(context.Background(), PingEvery+2*time.Second)
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defer cancel()
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w.Run(ctx)
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s := w.Snapshot()
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t.Logf("%+v said %v", s, said)
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if s.BusID == "" || s.LastPingAt == "" || s.Stalled || s.Services == 0 {
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t.Fatalf("%+v", s)
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}
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}
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