// compactionCommandFunc executes the "compaction" command.
func compactionCommandFunc(cmd *cobra.Command, args []string) {
if len(args) != 1 {
ExitWithError(ExitBadArgs, fmt.Errorf("compaction command needs 1 argument."))
}
rev, err := strconv.ParseInt(args[0], 10, 64)
if err != nil {
ExitWithError(ExitError, err)
}
var opts []clientv3.CompactOption
if compactPhysical {
opts = append(opts, clientv3.WithCompactPhysical())
}
c := mustClientFromCmd(cmd)
ctx, cancel := commandCtx(cmd)
cerr := c.Compact(ctx, rev, opts...)
cancel()
if cerr != nil {
ExitWithError(ExitError, cerr)
return
}
fmt.Println("compacted revision", rev)
}
// TestWatchFromZero tests that
// - watch from 0 should sync up and grab the object added before
// - watch from 0 is able to return events for objects whose previous version has been compacted
// - watch from non-0 should just watch changes after given version
func TestWatchFromZero(t *testing.T) {
ctx, store, cluster := testSetup(t)
defer cluster.Terminate(t)
key, storedObj := testPropogateStore(ctx, t, store, &api.Pod{ObjectMeta: api.ObjectMeta{Name: "foo", Namespace: "ns"}})
w, err := store.Watch(ctx, key, "0", storage.Everything)
if err != nil {
t.Fatalf("Watch failed: %v", err)
}
testCheckResult(t, 0, watch.Added, w, storedObj)
w.Stop()
// Update
out := &api.Pod{}
err = store.GuaranteedUpdate(ctx, key, out, true, nil, storage.SimpleUpdate(
func(runtime.Object) (runtime.Object, error) {
return &api.Pod{ObjectMeta: api.ObjectMeta{Name: "foo", Namespace: "ns", Annotations: map[string]string{"a": "1"}}}, nil
}))
if err != nil {
t.Fatalf("GuaranteedUpdate failed: %v", err)
}
// Make sure when we watch from 0 we receive an ADDED event
w, err = store.Watch(ctx, key, "0", storage.Everything)
if err != nil {
t.Fatalf("Watch failed: %v", err)
}
testCheckResult(t, 1, watch.Added, w, out)
w.Stop()
// Update again
out = &api.Pod{}
err = store.GuaranteedUpdate(ctx, key, out, true, nil, storage.SimpleUpdate(
func(runtime.Object) (runtime.Object, error) {
return &api.Pod{ObjectMeta: api.ObjectMeta{Name: "foo", Namespace: "ns"}}, nil
}))
if err != nil {
t.Fatalf("GuaranteedUpdate failed: %v", err)
}
// Compact previous versions
revToCompact, err := strconv.Atoi(out.ResourceVersion)
if err != nil {
t.Fatalf("Error converting %q to an int: %v", storedObj.ResourceVersion, err)
}
_, err = cluster.RandClient().Compact(ctx, int64(revToCompact), clientv3.WithCompactPhysical())
if err != nil {
t.Fatalf("Error compacting: %v", err)
}
// Make sure we can still watch from 0 and receive an ADDED event
w, err = store.Watch(ctx, key, "0", storage.Everything)
if err != nil {
t.Fatalf("Watch failed: %v", err)
}
testCheckResult(t, 2, watch.Added, w, out)
}
func (p *kvProxy) Compact(ctx context.Context, r *pb.CompactionRequest) (*pb.CompactionResponse, error) {
var opts []clientv3.CompactOption
if r.Physical {
opts = append(opts, clientv3.WithCompactPhysical())
}
resp, err := p.client.KV.Compact(ctx, r.Revision, opts...)
if err == nil {
p.cache.Compact(r.Revision)
}
return (*pb.CompactionResponse)(resp), err
}
