jschoubben
d13f74df40
An image build node up 24 days had lost its running kernel's modules to a linux-lts upgrade, so tun could not load and every RUN line failed in pasta. mesh-build-image now proves the tun device and, whatever its look refuses, judges its node not eligible (capacity 0 with the reason), so the asks go to a node that can build them. The kernel module loads tun at boot and declares kernel-modules-hook, which keeps the running kernel's modules across an upgrade. Needs mesh-sdk fix/ace-tun (Puller.Eligible).
88 lines
3.4 KiB
Go
88 lines
3.4 KiB
Go
package main
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import (
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"context"
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"strings"
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"testing"
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"time"
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"git.novox.be/novox/mesh-sdk/go/buildstep"
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"git.novox.be/novox/mesh-sdk/go/delivery"
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)
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const askCommit = "0123456789abcdef0123456789abcdef01234567"
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// 1887/A3image: a pulled image ask copies a pinned image with no fetch, then fetches and builds the module's own, and its
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// key <node>.<ask id> names each reference; the seat's verbs are served.
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func TestAPulledImageAskCopiesThenBuilds(t *testing.T) {
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states := newStates()
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m := moduleWith(t, newFake(t), states)
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m.Capacity = func() int { return 1 }
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var calls []string
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answer := func(name string, out any) StepTool {
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return StepTool{Name: name, Run: func(ctx context.Context, args map[string]any) (any, error) {
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calls = append(calls, name)
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return out, nil
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}}
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}
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steps := []StepTool{
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answer("build_image_fetch", map[string]any{"workspace": "ws1"}),
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answer("build_image_build", map[string]any{"digest": "sha256:cc", "reference": "registry/m/server@sha256:cc"}),
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answer("build_image_copy", map[string]any{"digest": "sha256:dd", "reference": "registry/m/base@sha256:dd"}),
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}
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src := buildstep.NewFakeAsks()
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a := delivery.StepAsk{ID: buildstep.NewID(), Kind: delivery.AskDelivery, Language: delivery.AskImage, Asker: "mesh-delivery-builder",
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At: time.Now(), Build: &delivery.BuildJob{Module: "m", Path: "modules/m", Publish: true,
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Fetch: map[string]any{"repository": "novox/mesh-catalog", "commit": askCommit},
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Artifacts: []delivery.AskArtifact{{Artifact: "base", From: "docker.io/library/alpine@sha256:00"}, {Artifact: "server"}}}}
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_ = src.PublishAsk(a)
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p := m.Puller(steps, src)
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p.PullWait = 10 * time.Millisecond
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ctx, stop := context.WithCancel(context.Background())
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defer stop()
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go p.Pull(ctx)
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key, _ := delivery.AskStepKey("ace", a.ID)
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var step delivery.Step
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for deadline := time.Now().Add(3 * time.Second); ; time.Sleep(5 * time.Millisecond) {
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states.mu.Lock()
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v := states.steps[key]
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states.mu.Unlock()
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if len(v) > 0 && v[len(v)-1].State != delivery.StepRunning {
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step = v[len(v)-1]
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break
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}
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if time.Now().After(deadline) {
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t.Fatalf("the ask's step never ended: calls %v", calls)
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}
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}
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if step.State != delivery.StepPassed || !strings.Contains(string(step.Result), "registry/m/server@sha256:cc") ||
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!strings.Contains(string(step.Result), "registry/m/base@sha256:dd") {
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t.Fatalf("the step = %+v", step)
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}
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if got := strings.Join(calls, ","); got != "build_image_copy,build_image_fetch,build_image_build" {
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t.Errorf("calls = %s", got)
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}
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served := map[string]bool{}
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for _, tool := range m.SeatTools(p) {
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served[tool.Name] = true
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}
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for _, verb := range []string{"current", "pause", "resume"} {
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if !served[Seat+"."+verb] {
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t.Errorf("%s.%s is not served", Seat, verb)
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}
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}
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// A node without /dev/net/tun (a build node, 2026-10-28) takes no ask: its capacity is 0 and says why, so the ask goes to a node
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// that can build it instead of failing in buildah's network setup; once it is there again, the capacity is back.
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tun := m.Tun
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m.Tun = t.TempDir() + "/none"
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_ = m.Check(context.Background())
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if c := p.CapacityDetail(); c.Effective != 0 || !strings.Contains(c.Why, "not eligible: "+m.Tun+" cannot be opened") {
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t.Errorf("without /dev/net/tun the capacity = %+v", c)
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}
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m.Tun = tun
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_ = m.Check(context.Background())
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if c := p.CapacityDetail(); c.Effective != 1 || c.Ineligible != "" {
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t.Errorf("with /dev/net/tun again the capacity = %+v", c)
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}
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}
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