shcizo
3166874433
Renames last_auto_digest to last_tag_digest. FinishJob sets it to the pinned digest after any successful job whose to_ref had no digest, so a rollback holds however the update was started.
628 lines
18 KiB
Go
628 lines
18 KiB
Go
package poller
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import (
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"context"
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"errors"
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"fmt"
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"io"
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"log/slog"
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"sort"
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"strings"
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"sync"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/shcizo/package-updater/internal/master/events"
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"github.com/shcizo/package-updater/internal/master/jobs"
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"github.com/shcizo/package-updater/internal/master/model"
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)
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type availableCall struct {
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id int64
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a model.Available
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}
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type pollErrorCall struct {
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ids []int64
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msg string
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}
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type lastAutoCall struct {
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id int64
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digest string
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}
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type fakeStore struct {
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mu sync.Mutex
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services []model.Service
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fresh map[int64]model.Service // what GetService returns instead of the listed row
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lastAuto []lastAutoCall
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listErr error
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available []availableCall
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pollErrors []pollErrorCall
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ctxErrs []error // ctx.Err() seen by every write
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}
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func (f *fakeStore) ListServices(context.Context) ([]model.Service, error) {
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return f.services, f.listErr
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}
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func (f *fakeStore) GetService(_ context.Context, id int64) (model.Service, error) {
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f.mu.Lock()
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defer f.mu.Unlock()
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if s, ok := f.fresh[id]; ok {
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return s, nil
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}
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for _, s := range f.services {
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if s.ID == id {
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return s, nil
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}
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}
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return model.Service{}, model.ErrNotFound
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}
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// SetLastTagDigest records the call and, like the database, changes the
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// row the next cycle lists.
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func (f *fakeStore) SetLastTagDigest(_ context.Context, id int64, digest string) error {
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f.mu.Lock()
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defer f.mu.Unlock()
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f.lastAuto = append(f.lastAuto, lastAutoCall{id, digest})
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for i := range f.services {
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if f.services[i].ID == id {
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f.services[i].LastTagDigest = digest
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}
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}
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return nil
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}
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func (f *fakeStore) SetAvailable(ctx context.Context, id int64, a model.Available) error {
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f.mu.Lock()
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defer f.mu.Unlock()
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f.ctxErrs = append(f.ctxErrs, ctx.Err())
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f.available = append(f.available, availableCall{id, a})
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return nil
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}
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func (f *fakeStore) SetPollError(ctx context.Context, ids []int64, msg string) error {
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f.mu.Lock()
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defer f.mu.Unlock()
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f.ctxErrs = append(f.ctxErrs, ctx.Err())
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f.pollErrors = append(f.pollErrors, pollErrorCall{ids, msg})
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return nil
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}
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type startCall struct {
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svcID int64
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req jobs.StartRequest
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}
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type fakeJobs struct {
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mu sync.Mutex
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starts []startCall
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errFor map[int64]error // by service ID
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ctxErrs []error
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}
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func (f *fakeJobs) Start(ctx context.Context, svc model.Service, req jobs.StartRequest) (model.Job, error) {
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f.mu.Lock()
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defer f.mu.Unlock()
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f.ctxErrs = append(f.ctxErrs, ctx.Err())
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f.starts = append(f.starts, startCall{svc.ID, req})
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return model.Job{ID: int64(len(f.starts))}, f.errFor[svc.ID]
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}
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type fakeRegistry struct {
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mu sync.Mutex
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digests map[string]string // ref -> digest
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errs map[string]error // ref -> error
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calls []string
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inFlight int
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maxSeen int
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delay time.Duration
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started chan struct{} // receives a value whenever a lookup starts, if set
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release chan struct{} // lookups wait for it to be closed, if set
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onResult func() // called after a lookup computed its answer
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}
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func (f *fakeRegistry) Digest(ctx context.Context, ref string) (string, error) {
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f.mu.Lock()
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f.calls = append(f.calls, ref)
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f.inFlight++
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if f.inFlight > f.maxSeen {
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f.maxSeen = f.inFlight
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}
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f.mu.Unlock()
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defer func() {
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f.mu.Lock()
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f.inFlight--
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f.mu.Unlock()
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}()
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if f.started != nil {
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f.started <- struct{}{}
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}
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if f.release != nil {
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select {
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case <-f.release:
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case <-ctx.Done():
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return "", ctx.Err()
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}
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}
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if f.delay > 0 {
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time.Sleep(f.delay)
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}
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if f.onResult != nil {
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f.onResult()
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}
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if err := f.errs[ref]; err != nil {
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return "", err
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}
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return f.digests[ref], nil
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}
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func (f *fakeRegistry) sortedCalls() []string {
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f.mu.Lock()
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defer f.mu.Unlock()
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out := append([]string(nil), f.calls...)
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sort.Strings(out)
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return out
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}
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type fakePub struct {
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mu sync.Mutex
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topics []events.Topic
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}
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func (p *fakePub) Publish(t events.Topic) {
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p.mu.Lock()
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defer p.mu.Unlock()
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p.topics = append(p.topics, t)
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}
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const (
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repoA = "gitea.shcizo.se/shcizo/slusk"
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repoB = "gitea/gitea"
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)
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// svc builds a polled service whose running version has digest sha256:old.
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func svc(id int64, actualRef string) model.Service {
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return model.Service{ID: id, Kind: "compose", ActualRef: actualRef, ActualDigest: "sha256:old", UpdateMode: model.ModeManual}
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}
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func newPoller(st *fakeStore, j *fakeJobs, reg *fakeRegistry, cfg Config) (*Poller, *fakePub) {
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pub := &fakePub{}
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if cfg.Workers == 0 {
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cfg.Workers = 4
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}
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p := New(st, j, reg, pub, cfg, slog.New(slog.NewTextHandler(io.Discard, nil)))
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p.now = func() time.Time { return time.Date(2026, 10, 13, 12, 0, 0, 0, time.UTC) }
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return p, pub
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}
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func TestSkipReason(t *testing.T) {
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tests := []struct {
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name string
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svc model.Service
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want string
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}{
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{"tag and digest", model.Service{ActualRef: "r:1", ActualDigest: "sha256:a"}, ""},
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{"bare image follows latest", model.Service{ActualRef: "r", ActualDigest: "sha256:a"}, ""},
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{"digest only follows no tag", model.Service{ActualRef: "r@sha256:a", ActualDigest: "sha256:a"}, model.ReasonNoTag},
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{"built", model.Service{ActualRef: "r:1", ActualDigest: "sha256:a", Built: true}, "built from source"},
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{"no digest", model.Service{ActualRef: "r:1"}, "no registry digest"},
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{"self and container are polled", model.Service{ActualRef: "r:1", ActualDigest: "sha256:a", Self: true, Kind: "container"}, ""},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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assert.Equal(t, tt.want, SkipReason(tt.svc))
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})
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}
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}
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func TestOneHeadPerDistinctRef(t *testing.T) {
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st := &fakeStore{services: []model.Service{
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svc(1, repoA+":1.4"),
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svc(2, repoA+":1.4@sha256:old"),
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svc(3, repoB),
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svc(4, repoB+":latest"),
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svc(5, repoB+":1.27"),
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}}
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reg := &fakeRegistry{digests: map[string]string{}}
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p, _ := newPoller(st, &fakeJobs{}, reg, Config{})
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p.Cycle(context.Background())
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assert.Equal(t, []string{repoA + ":1.4", repoB + ":1.27", repoB + ":latest"}, reg.sortedCalls())
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}
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func TestSkipped(t *testing.T) {
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removed := svc(4, "r:1")
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removed.RemovedAt = ptr(time.Now())
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st := &fakeStore{services: []model.Service{
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{ID: 1, ActualRef: "r@sha256:a", ActualDigest: "sha256:a"},
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{ID: 2, ActualRef: "r:1", ActualDigest: "sha256:a", Built: true},
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{ID: 3, ActualRef: "r:1"},
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removed,
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}}
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reg := &fakeRegistry{}
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j := &fakeJobs{}
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p, pub := newPoller(st, j, reg, Config{})
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p.Cycle(context.Background())
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assert.Empty(t, reg.calls, "no lookups")
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assert.Empty(t, st.available)
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assert.Empty(t, st.pollErrors)
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assert.Empty(t, j.starts)
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assert.Empty(t, pub.topics)
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}
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func TestNewDigest(t *testing.T) {
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ref := repoA + ":1.4"
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tests := []struct {
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name string
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mode string
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wantStart bool
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}{
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{"auto gets one poll job to repo:tag", model.ModeAuto, true},
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{"manual is only marked", model.ModeManual, false},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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s := svc(1, ref+"@sha256:old")
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s.UpdateMode = tt.mode
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st := &fakeStore{services: []model.Service{s}}
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reg := &fakeRegistry{digests: map[string]string{ref: "sha256:new"}}
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j := &fakeJobs{}
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p, pub := newPoller(st, j, reg, Config{})
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p.Cycle(context.Background())
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require.Len(t, st.available, 1)
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assert.Equal(t, int64(1), st.available[0].id)
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assert.Equal(t, model.Available{Ref: ref, Digest: "sha256:new", Source: model.SourcePoll,
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At: time.Date(2026, 10, 13, 12, 0, 0, 0, time.UTC)}, st.available[0].a)
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if tt.wantStart {
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assert.Equal(t, []startCall{{1, jobs.StartRequest{Trigger: model.TriggerPoll, Ref: ref}}}, j.starts)
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assert.Equal(t, []lastAutoCall{{1, "sha256:new"}}, st.lastAuto)
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} else {
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assert.Empty(t, j.starts)
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assert.Empty(t, st.lastAuto)
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}
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assert.Equal(t, []events.Topic{events.Services}, pub.topics)
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})
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}
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}
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func TestSameSuggestionIsIdempotent(t *testing.T) {
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ref := repoA + ":1.4"
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running := svc(1, ref+"@sha256:old")
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running.UpdateMode = model.ModeAuto
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running.ActualDigest = "sha256:new" // already on the registry's digest
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suggested := svc(2, ref)
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suggested.UpdateMode = model.ModeAuto
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suggested.AvailableRef, suggested.AvailableDigest = ref, "sha256:new"
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suggested.LastTagDigest = "sha256:new" // its job was started in an earlier cycle
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staleSuggestion := svc(3, ref)
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staleSuggestion.AvailableRef, staleSuggestion.AvailableDigest = ref, "sha256:older"
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st := &fakeStore{services: []model.Service{running, suggested, staleSuggestion}}
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reg := &fakeRegistry{digests: map[string]string{ref: "sha256:new"}}
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j := &fakeJobs{}
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p, _ := newPoller(st, j, reg, Config{})
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p.Cycle(context.Background())
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require.Len(t, st.available, 1, "only the service with an older suggestion is updated")
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assert.Equal(t, int64(3), st.available[0].id)
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assert.Empty(t, j.starts, "no new job for an already suggested digest")
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}
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func TestStartErrorsDoNotAbortCycle(t *testing.T) {
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ref := repoA + ":1.4"
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var svcs []model.Service
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for id := int64(1); id <= 3; id++ {
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s := svc(id, ref)
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s.UpdateMode = model.ModeAuto
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svcs = append(svcs, s)
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}
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st := &fakeStore{services: svcs}
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reg := &fakeRegistry{digests: map[string]string{ref: "sha256:new"}}
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j := &fakeJobs{errFor: map[int64]error{
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1: model.ErrJobActive,
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2: &model.NotUpdatableError{Reason: model.ReasonSelf},
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3: errors.New("database down"),
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}}
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p, _ := newPoller(st, j, reg, Config{})
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p.Cycle(context.Background())
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assert.Len(t, st.available, 3)
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assert.Len(t, j.starts, 3)
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assert.Empty(t, st.lastAuto, "a job that was not created is retried next cycle")
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}
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func TestRollbackOfAutoServiceIsNotUndone(t *testing.T) {
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ref := repoA + ":main"
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// Updated to sha256:new automatically, then rolled back to sha256:old by hand.
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s := svc(1, ref+"@sha256:old")
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s.UpdateMode = model.ModeAuto
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s.LastTagDigest = "sha256:new"
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s.DesiredRef = ref + "@sha256:old"
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st := &fakeStore{services: []model.Service{s}}
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reg := &fakeRegistry{digests: map[string]string{ref: "sha256:new"}}
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j := &fakeJobs{}
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p, _ := newPoller(st, j, reg, Config{})
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p.Cycle(context.Background())
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p.Cycle(context.Background())
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assert.Empty(t, j.starts, "same registry digest: the rollback stays")
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assert.Equal(t, "sha256:new", st.available[0].a.Digest, "the newer version is still offered")
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reg.digests[ref] = "sha256:newer"
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p.Cycle(context.Background())
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assert.Equal(t, []startCall{{1, jobs.StartRequest{Trigger: model.TriggerPoll, Ref: ref}}}, j.starts, "a new digest moves it again")
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assert.Equal(t, []lastAutoCall{{1, "sha256:newer"}}, st.lastAuto)
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}
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func TestActiveJobIsRetriedNextCycle(t *testing.T) {
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ref := repoA + ":1.4"
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s := svc(1, ref)
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s.UpdateMode = model.ModeAuto
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st := &fakeStore{services: []model.Service{s}}
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reg := &fakeRegistry{digests: map[string]string{ref: "sha256:new"}}
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j := &fakeJobs{errFor: map[int64]error{1: model.ErrJobActive}}
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p, _ := newPoller(st, j, reg, Config{})
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p.Cycle(context.Background())
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require.Len(t, j.starts, 1)
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assert.Empty(t, st.lastAuto)
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j.errFor = nil
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p.Cycle(context.Background())
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assert.Len(t, j.starts, 2)
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assert.Equal(t, []lastAutoCall{{1, "sha256:new"}}, st.lastAuto)
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p.Cycle(context.Background())
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assert.Len(t, j.starts, 2, "started once the job exists")
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}
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func TestJobThatAlreadyDeployedTheDigestIsNotStartedAgain(t *testing.T) {
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ref := repoA + ":1.4"
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// FinishJob set desired_ref; the agent has not reported the new digest yet.
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s := svc(1, ref+"@sha256:old")
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s.UpdateMode = model.ModeAuto
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s.DesiredRef = ref + "@sha256:new"
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st := &fakeStore{services: []model.Service{s}}
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reg := &fakeRegistry{digests: map[string]string{ref: "sha256:new"}}
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j := &fakeJobs{}
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p, _ := newPoller(st, j, reg, Config{})
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p.Cycle(context.Background())
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assert.Empty(t, j.starts)
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}
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func TestServiceSwitchedToManualDuringTheCycleIsNotStarted(t *testing.T) {
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ref := repoA + ":1.4"
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s := svc(1, ref)
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s.UpdateMode = model.ModeAuto
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manual := s
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manual.UpdateMode = model.ModeManual
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st := &fakeStore{services: []model.Service{s}, fresh: map[int64]model.Service{1: manual}}
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reg := &fakeRegistry{digests: map[string]string{ref: "sha256:new"}}
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j := &fakeJobs{}
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p, _ := newPoller(st, j, reg, Config{})
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p.Cycle(context.Background())
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assert.Len(t, st.available, 1, "still suggested")
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assert.Empty(t, j.starts)
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assert.Empty(t, st.lastAuto)
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}
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func TestErrorIsPerRef(t *testing.T) {
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bad, good := repoA+":1.4", repoB+":1.27"
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badOld := svc(1, bad)
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badSame := svc(2, bad)
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badSame.LastPollError = "head: 401 unauthorized"
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goodSvc := svc(3, good)
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st := &fakeStore{services: []model.Service{badOld, badSame, goodSvc}}
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reg := &fakeRegistry{
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errs: map[string]error{bad: errors.New("head: 401 unauthorized")},
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digests: map[string]string{good: "sha256:new"},
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}
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p, pub := newPoller(st, &fakeJobs{}, reg, Config{})
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p.Cycle(context.Background())
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assert.Equal(t, []pollErrorCall{{[]int64{1}, "head: 401 unauthorized"}}, st.pollErrors,
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"only the service whose stored error differs is written")
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require.Len(t, st.available, 1, "the other ref is still processed")
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assert.Equal(t, int64(3), st.available[0].id)
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assert.Equal(t, []events.Topic{events.Services}, pub.topics)
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}
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func TestErrorTextIsTruncated(t *testing.T) {
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ref := repoA + ":1.4"
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st := &fakeStore{services: []model.Service{svc(1, ref)}}
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reg := &fakeRegistry{errs: map[string]error{ref: errors.New(strings.Repeat("é", 400) + "\x00")}}
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p, _ := newPoller(st, &fakeJobs{}, reg, Config{})
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p.Cycle(context.Background())
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require.Len(t, st.pollErrors, 1)
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msg := st.pollErrors[0].msg
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assert.LessOrEqual(t, len(msg), maxErrorBytes)
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assert.Equal(t, strings.Repeat("é", 250), msg, "cut on a character boundary, NUL removed")
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}
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func TestErrorClearedOnSuccess(t *testing.T) {
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ref := repoA + ":1.4"
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failing := svc(1, ref)
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failing.LastPollError = "head: boom"
|
|
fine := svc(2, ref)
|
|
failing.ActualDigest, fine.ActualDigest = "sha256:new", "sha256:new"
|
|
st := &fakeStore{services: []model.Service{failing, fine}}
|
|
reg := &fakeRegistry{digests: map[string]string{ref: "sha256:new"}}
|
|
p, pub := newPoller(st, &fakeJobs{}, reg, Config{})
|
|
|
|
p.Cycle(context.Background())
|
|
|
|
assert.Equal(t, []pollErrorCall{{[]int64{1}, ""}}, st.pollErrors)
|
|
assert.Empty(t, st.available)
|
|
assert.Equal(t, []events.Topic{events.Services}, pub.topics)
|
|
}
|
|
|
|
func TestNothingWrittenNothingPublished(t *testing.T) {
|
|
ref := repoA + ":1.4"
|
|
s := svc(1, ref)
|
|
s.ActualDigest = "sha256:new"
|
|
st := &fakeStore{services: []model.Service{s}}
|
|
reg := &fakeRegistry{digests: map[string]string{ref: "sha256:new"}}
|
|
p, pub := newPoller(st, &fakeJobs{}, reg, Config{})
|
|
|
|
p.Cycle(context.Background())
|
|
|
|
assert.Empty(t, st.pollErrors)
|
|
assert.Empty(t, st.available)
|
|
assert.Empty(t, pub.topics)
|
|
}
|
|
|
|
func TestListErrorEndsTheCycle(t *testing.T) {
|
|
st := &fakeStore{listErr: errors.New("db down")}
|
|
reg := &fakeRegistry{}
|
|
p, _ := newPoller(st, &fakeJobs{}, reg, Config{})
|
|
|
|
p.Cycle(context.Background())
|
|
|
|
assert.Empty(t, reg.calls)
|
|
}
|
|
|
|
func TestConcurrencyLimit(t *testing.T) {
|
|
const workers = 3
|
|
var svcs []model.Service
|
|
for i := 0; i < 8; i++ {
|
|
svcs = append(svcs, svc(int64(i+1), fmt.Sprintf("%s%d:1", repoA, i)))
|
|
}
|
|
st := &fakeStore{services: svcs}
|
|
reg := &fakeRegistry{release: make(chan struct{}), started: make(chan struct{}, 8)}
|
|
p, _ := newPoller(st, &fakeJobs{}, reg, Config{Workers: workers})
|
|
done := make(chan struct{})
|
|
go func() { p.Cycle(context.Background()); close(done) }()
|
|
|
|
for i := 0; i < workers; i++ {
|
|
select {
|
|
case <-reg.started:
|
|
case <-time.After(2 * time.Second):
|
|
t.Fatalf("only %d lookups started, want %d", i, workers)
|
|
}
|
|
}
|
|
select {
|
|
case <-reg.started:
|
|
t.Fatal("more lookups in flight than Workers")
|
|
case <-time.After(100 * time.Millisecond):
|
|
}
|
|
close(reg.release)
|
|
|
|
select {
|
|
case <-done:
|
|
case <-time.After(2 * time.Second):
|
|
t.Fatal("Cycle did not finish")
|
|
}
|
|
assert.Len(t, reg.calls, 8)
|
|
}
|
|
|
|
func TestCycleStopsOnCancel(t *testing.T) {
|
|
var svcs []model.Service
|
|
for i := 0; i < 6; i++ {
|
|
svcs = append(svcs, svc(int64(i+1), fmt.Sprintf("%s%d:1", repoA, i)))
|
|
}
|
|
st := &fakeStore{services: svcs}
|
|
reg := &fakeRegistry{release: make(chan struct{}), started: make(chan struct{}, 6)}
|
|
p, pub := newPoller(st, &fakeJobs{}, reg, Config{Workers: 2})
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
done := make(chan struct{})
|
|
go func() { p.Cycle(ctx); close(done) }()
|
|
<-reg.started
|
|
<-reg.started
|
|
|
|
cancel()
|
|
|
|
select {
|
|
case <-done:
|
|
case <-time.After(2 * time.Second):
|
|
t.Fatal("Cycle did not return after cancel")
|
|
}
|
|
assert.Len(t, reg.calls, 2, "no new lookups after cancel")
|
|
assert.Empty(t, st.pollErrors, "cancelled lookups are not recorded as registry errors")
|
|
assert.Empty(t, st.available)
|
|
assert.Empty(t, pub.topics)
|
|
}
|
|
|
|
func TestMarkedJobsAreStartedEvenIfCancelledDuringTheCycle(t *testing.T) {
|
|
ref := repoA + ":1.4"
|
|
s := svc(1, ref)
|
|
s.UpdateMode = model.ModeAuto
|
|
st := &fakeStore{services: []model.Service{s}}
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
reg := &fakeRegistry{digests: map[string]string{ref: "sha256:new"}, onResult: cancel}
|
|
j := &fakeJobs{}
|
|
p, _ := newPoller(st, j, reg, Config{})
|
|
|
|
p.Cycle(ctx)
|
|
|
|
require.Len(t, st.available, 1)
|
|
require.Len(t, j.starts, 1)
|
|
assert.NoError(t, st.ctxErrs[0], "writes do not see the cancelled context")
|
|
assert.NoError(t, j.ctxErrs[0])
|
|
}
|
|
|
|
func TestRun(t *testing.T) {
|
|
ref := repoA + ":1.4"
|
|
st := &fakeStore{services: []model.Service{svc(1, ref)}}
|
|
reg := &fakeRegistry{digests: map[string]string{ref: "sha256:old"}, delay: 30 * time.Millisecond}
|
|
p, _ := newPoller(st, &fakeJobs{}, reg, Config{Interval: 5 * time.Millisecond, FirstDelay: 60 * time.Millisecond, Workers: 1})
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
done := make(chan struct{})
|
|
began := time.Now()
|
|
go func() { p.Run(ctx); close(done) }()
|
|
|
|
require.Eventually(t, func() bool {
|
|
reg.mu.Lock()
|
|
defer reg.mu.Unlock()
|
|
return len(reg.calls) >= 3
|
|
}, 5*time.Second, 5*time.Millisecond)
|
|
cancel()
|
|
|
|
select {
|
|
case <-done:
|
|
case <-time.After(2 * time.Second):
|
|
t.Fatal("Run did not return after cancel")
|
|
}
|
|
assert.GreaterOrEqual(t, time.Since(began), 60*time.Millisecond+2*30*time.Millisecond, "first cycle waits FirstDelay")
|
|
assert.Equal(t, 1, reg.maxSeen, "cycles never overlap")
|
|
}
|
|
|
|
func TestRunReturnsDuringFirstDelay(t *testing.T) {
|
|
p, _ := newPoller(&fakeStore{}, &fakeJobs{}, &fakeRegistry{}, Config{Interval: time.Hour, FirstDelay: time.Hour})
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
done := make(chan struct{})
|
|
go func() { p.Run(ctx); close(done) }()
|
|
|
|
cancel()
|
|
|
|
select {
|
|
case <-done:
|
|
case <-time.After(2 * time.Second):
|
|
t.Fatal("Run did not return after cancel")
|
|
}
|
|
}
|
|
|
|
func ptr[T any](v T) *T { return &v }
|