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Remove apply v2 logic that is no longer used
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v2 store is no longer available in v3.6.

Only v2 PUT is neeeded as it applies to v3 storage and etcd v3.5 uses it for setting member
attributes and cluster version.

We can ignore all other requests.

Signed-off-by: Marek Siarkowicz <[email protected]>
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@serathius
serathius committed Nov 22, 2023
1 parent fd0882b commit 5c2e498
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34 changes: 0 additions & 34 deletions server/etcdserver/apply_v2.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -37,11 +37,7 @@ const v2Version = "v2"

// ApplierV2 is the interface for processing V2 raft messages
type ApplierV2 interface {
Delete(r *RequestV2) Response
Post(r *RequestV2) Response
Put(r *RequestV2, shouldApplyV3 membership.ShouldApplyV3) Response
QGet(r *RequestV2) Response
Sync(r *RequestV2) Response
}

func NewApplierV2(lg *zap.Logger, s v2store.Store, c *membership.RaftCluster) ApplierV2 {
Expand All @@ -57,19 +53,6 @@ type applierV2store struct {
cluster *membership.RaftCluster
}

func (a *applierV2store) Delete(r *RequestV2) Response {
switch {
case r.PrevIndex > 0 || r.PrevValue != "":
return toResponse(a.store.CompareAndDelete(r.Path, r.PrevValue, r.PrevIndex))
default:
return toResponse(a.store.Delete(r.Path, r.Dir, r.Recursive))
}
}

func (a *applierV2store) Post(r *RequestV2) Response {
return toResponse(a.store.Create(r.Path, r.Dir, r.Val, true, r.TTLOptions()))
}

func (a *applierV2store) Put(r *RequestV2, shouldApplyV3 membership.ShouldApplyV3) Response {
ttlOptions := r.TTLOptions()
exists, existsSet := pbutil.GetBool(r.PrevExist)
Expand Down Expand Up @@ -109,15 +92,6 @@ func (a *applierV2store) Put(r *RequestV2, shouldApplyV3 membership.ShouldApplyV
}
}

func (a *applierV2store) QGet(r *RequestV2) Response {
return toResponse(a.store.Get(r.Path, r.Recursive, r.Sorted))
}

func (a *applierV2store) Sync(r *RequestV2) Response {
a.store.DeleteExpiredKeys(time.Unix(0, r.Time))
return Response{}
}

// applyV2Request interprets r as a call to v2store.X
// and returns a Response interpreted from v2store.Event
func (s *EtcdServer) applyV2Request(r *RequestV2, shouldApplyV3 membership.ShouldApplyV3) (resp Response) {
Expand All @@ -136,16 +110,8 @@ func (s *EtcdServer) applyV2Request(r *RequestV2, shouldApplyV3 membership.Shoul
}(time.Now())

switch r.Method {
case "POST":
return s.applyV2.Post(r)
case "PUT":
return s.applyV2.Put(r, shouldApplyV3)
case "DELETE":
return s.applyV2.Delete(r)
case "QGET":
return s.applyV2.QGet(r)
case "SYNC":
return s.applyV2.Sync(r)
default:
// This should never be reached, but just in case:
return Response{Err: errors.ErrUnknownMethod}
Expand Down
243 changes: 0 additions & 243 deletions server/etcdserver/server_test.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -133,249 +133,6 @@ func TestApplyRepeat(t *testing.T) {
}
}

func TestApplyRequest(t *testing.T) {
tests := []struct {
req pb.Request

wresp Response
wactions []testutil.Action
}{
// POST ==> Create
{
pb.Request{Method: "POST", ID: 1},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Create",
Params: []any{"", false, "", true, v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// POST ==> Create, with expiration
{
pb.Request{Method: "POST", ID: 1, Expiration: 1337},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Create",
Params: []any{"", false, "", true, v2store.TTLOptionSet{ExpireTime: time.Unix(0, 1337)}},
},
},
},
// POST ==> Create, with dir
{
pb.Request{Method: "POST", ID: 1, Dir: true},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Create",
Params: []any{"", true, "", true, v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT ==> Set
{
pb.Request{Method: "PUT", ID: 1},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Set",
Params: []any{"", false, "", v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT ==> Set, with dir
{
pb.Request{Method: "PUT", ID: 1, Dir: true},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Set",
Params: []any{"", true, "", v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevExist=true ==> Update
{
pb.Request{Method: "PUT", ID: 1, PrevExist: pbutil.Boolp(true)},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Update",
Params: []any{"", "", v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevExist=false ==> Create
{
pb.Request{Method: "PUT", ID: 1, PrevExist: pbutil.Boolp(false)},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Create",
Params: []any{"", false, "", false, v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevExist=true *and* PrevIndex set ==> CompareAndSwap
{
pb.Request{Method: "PUT", ID: 1, PrevExist: pbutil.Boolp(true), PrevIndex: 1},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "CompareAndSwap",
Params: []any{"", "", uint64(1), "", v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevExist=false *and* PrevIndex set ==> Create
{
pb.Request{Method: "PUT", ID: 1, PrevExist: pbutil.Boolp(false), PrevIndex: 1},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Create",
Params: []any{"", false, "", false, v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevIndex set ==> CompareAndSwap
{
pb.Request{Method: "PUT", ID: 1, PrevIndex: 1},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "CompareAndSwap",
Params: []any{"", "", uint64(1), "", v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevValue set ==> CompareAndSwap
{
pb.Request{Method: "PUT", ID: 1, PrevValue: "bar"},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "CompareAndSwap",
Params: []any{"", "bar", uint64(0), "", v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevIndex and PrevValue set ==> CompareAndSwap
{
pb.Request{Method: "PUT", ID: 1, PrevIndex: 1, PrevValue: "bar"},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "CompareAndSwap",
Params: []any{"", "bar", uint64(1), "", v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// DELETE ==> Delete
{
pb.Request{Method: "DELETE", ID: 1},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Delete",
Params: []any{"", false, false},
},
},
},
// DELETE with PrevIndex set ==> CompareAndDelete
{
pb.Request{Method: "DELETE", ID: 1, PrevIndex: 1},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "CompareAndDelete",
Params: []any{"", "", uint64(1)},
},
},
},
// DELETE with PrevValue set ==> CompareAndDelete
{
pb.Request{Method: "DELETE", ID: 1, PrevValue: "bar"},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "CompareAndDelete",
Params: []any{"", "bar", uint64(0)},
},
},
},
// DELETE with PrevIndex *and* PrevValue set ==> CompareAndDelete
{
pb.Request{Method: "DELETE", ID: 1, PrevIndex: 5, PrevValue: "bar"},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "CompareAndDelete",
Params: []any{"", "bar", uint64(5)},
},
},
},
// QGET ==> Get
{
pb.Request{Method: "QGET", ID: 1},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Get",
Params: []any{"", false, false},
},
},
},
// SYNC ==> DeleteExpiredKeys
{
pb.Request{Method: "SYNC", ID: 1},
Response{},
[]testutil.Action{
{
Name: "DeleteExpiredKeys",
Params: []any{time.Unix(0, 0)},
},
},
},
{
pb.Request{Method: "SYNC", ID: 1, Time: 12345},
Response{},
[]testutil.Action{
{
Name: "DeleteExpiredKeys",
Params: []any{time.Unix(0, 12345)},
},
},
},
// Unknown method - error
{
pb.Request{Method: "BADMETHOD", ID: 1},
Response{Err: errors.ErrUnknownMethod},
[]testutil.Action{},
},
}

for i, tt := range tests {
st := mockstore.NewRecorder()
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zaptest.NewLogger(t),
v2store: st,
}
srv.applyV2 = &applierV2store{store: srv.v2store, cluster: srv.cluster}
resp := srv.applyV2Request((*RequestV2)(&tt.req), membership.ApplyBoth)

if !reflect.DeepEqual(resp, tt.wresp) {
t.Errorf("#%d: resp = %+v, want %+v", i, resp, tt.wresp)
}
gaction := st.Action()
if !reflect.DeepEqual(gaction, tt.wactions) {
t.Errorf("#%d: action = %#v, want %#v", i, gaction, tt.wactions)
}
}
}

func TestApplyRequestOnAdminMemberAttributes(t *testing.T) {
be, _ := betesting.NewDefaultTmpBackend(t)
defer betesting.Close(t, be)
Expand Down

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