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package scheduler
import (
"encoding/json"
"sync"
"testing"
"time"
"github.com/docker/distribution/context"
"github.com/docker/distribution/reference"
"github.com/docker/distribution/registry/storage/driver/inmemory"
)
func testRefs(t *testing.T) (reference.Reference, reference.Reference, reference.Reference) {
ref1, err := reference.Parse("testrepo@sha256:aaaaeaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
if err != nil {
t.Fatalf("could not parse reference: %v", err)
}
ref2, err := reference.Parse("testrepo@sha256:bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb")
if err != nil {
t.Fatalf("could not parse reference: %v", err)
}
ref3, err := reference.Parse("testrepo@sha256:cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc")
if err != nil {
t.Fatalf("could not parse reference: %v", err)
}
return ref1, ref2, ref3
}
func TestSchedule(t *testing.T) {
ref1, ref2, ref3 := testRefs(t)
timeUnit := time.Millisecond
remainingRepos := map[string]bool{
ref1.String(): true,
ref2.String(): true,
ref3.String(): true,
}
var mu sync.Mutex
s := New(context.Background(), inmemory.New(), "/ttl")
deleteFunc := func(repoName reference.Reference) error {
if len(remainingRepos) == 0 {
t.Fatalf("Incorrect expiry count")
}
_, ok := remainingRepos[repoName.String()]
if !ok {
t.Fatalf("Trying to remove nonexistent repo: %s", repoName)
}
t.Log("removing", repoName)
mu.Lock()
delete(remainingRepos, repoName.String())
mu.Unlock()
return nil
}
s.onBlobExpire = deleteFunc
err := s.Start()
if err != nil {
t.Fatalf("Error starting ttlExpirationScheduler: %s", err)
}
s.add(ref1, 3*timeUnit, entryTypeBlob)
s.add(ref2, 1*timeUnit, entryTypeBlob)
func() {
s.Lock()
s.add(ref3, 1*timeUnit, entryTypeBlob)
s.Unlock()
}()
// Ensure all repos are deleted
<-time.After(50 * timeUnit)
mu.Lock()
defer mu.Unlock()
if len(remainingRepos) != 0 {
t.Fatalf("Repositories remaining: %#v", remainingRepos)
}
}
func TestRestoreOld(t *testing.T) {
ref1, ref2, _ := testRefs(t)
remainingRepos := map[string]bool{
ref1.String(): true,
ref2.String(): true,
}
var wg sync.WaitGroup
wg.Add(len(remainingRepos))
var mu sync.Mutex
deleteFunc := func(r reference.Reference) error {
mu.Lock()
defer mu.Unlock()
if r.String() == ref1.String() && len(remainingRepos) == 2 {
t.Errorf("ref1 should not be removed first")
}
_, ok := remainingRepos[r.String()]
if !ok {
t.Fatalf("Trying to remove nonexistent repo: %s", r)
}
delete(remainingRepos, r.String())
wg.Done()
return nil
}
timeUnit := time.Millisecond
serialized, err := json.Marshal(&map[string]schedulerEntry{
ref1.String(): {
Expiry: time.Now().Add(10 * timeUnit),
Key: ref1.String(),
EntryType: 0,
},
ref2.String(): {
Expiry: time.Now().Add(-3 * timeUnit), // TTL passed, should be removed first
Key: ref2.String(),
EntryType: 0,
},
})
if err != nil {
t.Fatalf("Error serializing test data: %s", err.Error())
}
ctx := context.Background()
pathToStatFile := "/ttl"
fs := inmemory.New()
err = fs.PutContent(ctx, pathToStatFile, serialized)
if err != nil {
t.Fatal("Unable to write serialized data to fs")
}
s := New(context.Background(), fs, "/ttl")
s.OnBlobExpire(deleteFunc)
err = s.Start()
if err != nil {
t.Fatalf("Error starting ttlExpirationScheduler: %s", err)
}
defer s.Stop()
wg.Wait()
mu.Lock()
defer mu.Unlock()
if len(remainingRepos) != 0 {
t.Fatalf("Repositories remaining: %#v", remainingRepos)
}
}
func TestStopRestore(t *testing.T) {
ref1, ref2, _ := testRefs(t)
timeUnit := time.Millisecond
remainingRepos := map[string]bool{
ref1.String(): true,
ref2.String(): true,
}
var mu sync.Mutex
deleteFunc := func(r reference.Reference) error {
mu.Lock()
delete(remainingRepos, r.String())
mu.Unlock()
return nil
}
fs := inmemory.New()
pathToStateFile := "/ttl"
s := New(context.Background(), fs, pathToStateFile)
s.onBlobExpire = deleteFunc
err := s.Start()
if err != nil {
t.Fatalf(err.Error())
}
s.add(ref1, 300*timeUnit, entryTypeBlob)
s.add(ref2, 100*timeUnit, entryTypeBlob)
// Start and stop before all operations complete
// state will be written to fs
s.Stop()
time.Sleep(10 * time.Millisecond)
// v2 will restore state from fs
s2 := New(context.Background(), fs, pathToStateFile)
s2.onBlobExpire = deleteFunc
err = s2.Start()
if err != nil {
t.Fatalf("Error starting v2: %s", err.Error())
}
<-time.After(500 * timeUnit)
mu.Lock()
defer mu.Unlock()
if len(remainingRepos) != 0 {
t.Fatalf("Repositories remaining: %#v", remainingRepos)
}
}
func TestDoubleStart(t *testing.T) {
s := New(context.Background(), inmemory.New(), "/ttl")
err := s.Start()
if err != nil {
t.Fatalf("Unable to start scheduler")
}
err = s.Start()
if err == nil {
t.Fatalf("Scheduler started twice without error")
}
}
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