From 07c2d886fa9413e208a44b339ca6f97a5a5806c0 Mon Sep 17 00:00:00 2001 From: Ryan McKinley Date: Wed, 17 Jul 2024 07:40:03 -0700 Subject: [PATCH] Storage: prepare in resource bytes in storage.Interface, not the backend (#90513) * prepare in k8s * prepare in k8s * prepare in k8s * simplify event creation * decode the inputs --- pkg/storage/unified/apistore/prepare.go | 89 +++++ pkg/storage/unified/apistore/storage.go | 27 +- pkg/storage/unified/resource/event.go | 56 ---- pkg/storage/unified/resource/resource.pb.go | 353 +++++++++----------- pkg/storage/unified/resource/resource.proto | 6 - pkg/storage/unified/resource/server.go | 95 +++--- pkg/storage/unified/resource/server_test.go | 2 +- 7 files changed, 304 insertions(+), 324 deletions(-) create mode 100644 pkg/storage/unified/apistore/prepare.go diff --git a/pkg/storage/unified/apistore/prepare.go b/pkg/storage/unified/apistore/prepare.go new file mode 100644 index 00000000000..931c6235251 --- /dev/null +++ b/pkg/storage/unified/apistore/prepare.go @@ -0,0 +1,89 @@ +package apistore + +import ( + "bytes" + "context" + "fmt" + "time" + + "k8s.io/apimachinery/pkg/runtime" + + "github.com/grafana/grafana/pkg/apimachinery/identity" + "github.com/grafana/grafana/pkg/apimachinery/utils" +) + +// Called on create +func (s *Storage) prepareObjectForStorage(ctx context.Context, newObject runtime.Object) ([]byte, error) { + user, err := identity.GetRequester(ctx) + if err != nil { + return nil, err + } + + obj, err := utils.MetaAccessor(newObject) + if err != nil { + return nil, err + } + if obj.GetName() == "" { + return nil, fmt.Errorf("new object must have a name") + } + obj.SetGenerateName("") // Clear the random name field + obj.SetResourceVersion("") + obj.SetSelfLink("") + + // Read+write will verify that origin format is accurate + origin, err := obj.GetOriginInfo() + if err != nil { + return nil, err + } + obj.SetOriginInfo(origin) + obj.SetUpdatedBy("") + obj.SetUpdatedTimestamp(nil) + obj.SetCreatedBy(user.GetUID().String()) + + var buf bytes.Buffer + err = s.codec.Encode(newObject, &buf) + if err != nil { + return nil, err + } + return buf.Bytes(), nil +} + +// Called on update +func (s *Storage) prepareObjectForUpdate(ctx context.Context, updateObject runtime.Object, previousObject runtime.Object) ([]byte, error) { + user, err := identity.GetRequester(ctx) + if err != nil { + return nil, err + } + + obj, err := utils.MetaAccessor(updateObject) + if err != nil { + return nil, err + } + if obj.GetName() == "" { + return nil, fmt.Errorf("updated object must have a name") + } + + previous, err := utils.MetaAccessor(previousObject) + if err != nil { + return nil, err + } + obj.SetUID(previous.GetUID()) + obj.SetCreatedBy(previous.GetCreatedBy()) + obj.SetCreationTimestamp(previous.GetCreationTimestamp()) + + // Read+write will verify that origin format is accurate + origin, err := obj.GetOriginInfo() + if err != nil { + return nil, err + } + obj.SetOriginInfo(origin) + obj.SetUpdatedBy(user.GetUID().String()) + obj.SetUpdatedTimestampMillis(time.Now().UnixMilli()) + + var buf bytes.Buffer + err = s.codec.Encode(updateObject, &buf) + if err != nil { + return nil, err + } + return buf.Bytes(), nil +} diff --git a/pkg/storage/unified/apistore/storage.go b/pkg/storage/unified/apistore/storage.go index abca98a89d8..30406ba9623 100644 --- a/pkg/storage/unified/apistore/storage.go +++ b/pkg/storage/unified/apistore/storage.go @@ -6,7 +6,6 @@ package apistore import ( - "bytes" "context" "errors" "fmt" @@ -126,24 +125,15 @@ func (s *Storage) Create(ctx context.Context, key string, obj runtime.Object, ou return err } - err = s.Versioner().PrepareObjectForStorage(obj) + value, err := s.prepareObjectForStorage(ctx, obj) if err != nil { return err } - - var buf bytes.Buffer - err = s.codec.Encode(obj, &buf) - if err != nil { - return err - } - cmd := &resource.CreateRequest{ Key: k, - Value: buf.Bytes(), + Value: value, } - // TODO?? blob from context? - rsp, err := s.store.Create(ctx, cmd) if err != nil { return err @@ -157,8 +147,8 @@ func (s *Storage) Create(ctx context.Context, key string, obj runtime.Object, ou return fmt.Errorf("error in status %+v", rsp.Error) } - // Create into the out value - _, _, err = s.codec.Decode(rsp.Value, nil, out) + // Decode into the result (can we just copy?) + _, _, err = s.codec.Decode(cmd.Value, nil, out) if err != nil { return err } @@ -505,13 +495,12 @@ func (s *Storage) GuaranteedUpdate( ) } - var buf bytes.Buffer - err = s.codec.Encode(updatedObj, &buf) + value, err := s.prepareObjectForUpdate(ctx, updatedObj, destination) if err != nil { return err } - req := &resource.UpdateRequest{Key: k, Value: buf.Bytes()} + req := &resource.UpdateRequest{Key: k, Value: value} rsp, err := s.store.Update(ctx, req) if err != nil { return err @@ -521,8 +510,8 @@ func (s *Storage) GuaranteedUpdate( return err } - // Read the mutated fields the response field - _, _, err = s.codec.Decode(rsp.Value, nil, destination) + // Decode into the response (can we just copy?) + _, _, err = s.codec.Decode(value, nil, destination) if err != nil { return err } diff --git a/pkg/storage/unified/resource/event.go b/pkg/storage/unified/resource/event.go index fbc2f76c60f..53d250d1b72 100644 --- a/pkg/storage/unified/resource/event.go +++ b/pkg/storage/unified/resource/event.go @@ -3,9 +3,6 @@ package resource import ( context "context" - "k8s.io/apimachinery/pkg/apis/meta/v1/unstructured" - - "github.com/grafana/grafana/pkg/apimachinery/identity" "github.com/grafana/grafana/pkg/apimachinery/utils" ) @@ -37,56 +34,3 @@ type WrittenEvent struct { // A function to write events type EventAppender = func(context.Context, *WriteEvent) (int64, error) - -type writeEventBuilder struct { - EventID int64 - Key *ResourceKey // the request key - Type WatchEvent_Type - - Requester identity.Requester - Object *unstructured.Unstructured - - // Access the raw metadata values - Meta utils.GrafanaMetaAccessor - OldMeta utils.GrafanaMetaAccessor -} - -func newEventFromBytes(value, oldValue []byte) (*writeEventBuilder, error) { - builder := &writeEventBuilder{ - Object: &unstructured.Unstructured{}, - } - err := builder.Object.UnmarshalJSON(value) - if err != nil { - return nil, err - } - builder.Meta, err = utils.MetaAccessor(builder.Object) - if err != nil { - return nil, err - } - - if oldValue == nil { - builder.Type = WatchEvent_ADDED - } else { - builder.Type = WatchEvent_MODIFIED - - temp := &unstructured.Unstructured{} - err = temp.UnmarshalJSON(oldValue) - if err != nil { - return nil, err - } - builder.OldMeta, err = utils.MetaAccessor(temp) - if err != nil { - return nil, err - } - } - return builder, nil -} - -func (b *writeEventBuilder) toEvent() (event WriteEvent, err error) { - event.Key = b.Key - event.Type = b.Type - event.ObjectOld = b.OldMeta - event.Object = b.Meta - event.Value, err = b.Object.MarshalJSON() - return // includes the named values -} diff --git a/pkg/storage/unified/resource/resource.pb.go b/pkg/storage/unified/resource/resource.pb.go index d0fb40dd44c..8068b0f2fdd 100644 --- a/pkg/storage/unified/resource/resource.pb.go +++ b/pkg/storage/unified/resource/resource.pb.go @@ -736,8 +736,6 @@ type CreateResponse struct { Error *ErrorResult `protobuf:"bytes,1,opt,name=error,proto3" json:"error,omitempty"` // The updated resource version ResourceVersion int64 `protobuf:"varint,2,opt,name=resource_version,json=resourceVersion,proto3" json:"resource_version,omitempty"` - // The resource JSON. With managed annotations included - Value []byte `protobuf:"bytes,3,opt,name=value,proto3" json:"value,omitempty"` } func (x *CreateResponse) Reset() { @@ -786,13 +784,6 @@ func (x *CreateResponse) GetResourceVersion() int64 { return 0 } -func (x *CreateResponse) GetValue() []byte { - if x != nil { - return x.Value - } - return nil -} - type UpdateRequest struct { state protoimpl.MessageState sizeCache protoimpl.SizeCache @@ -868,8 +859,6 @@ type UpdateResponse struct { Error *ErrorResult `protobuf:"bytes,1,opt,name=error,proto3" json:"error,omitempty"` // The updated resource version ResourceVersion int64 `protobuf:"varint,2,opt,name=resource_version,json=resourceVersion,proto3" json:"resource_version,omitempty"` - // The resource JSON. With managed annotations included - Value []byte `protobuf:"bytes,3,opt,name=value,proto3" json:"value,omitempty"` } func (x *UpdateResponse) Reset() { @@ -918,13 +907,6 @@ func (x *UpdateResponse) GetResourceVersion() int64 { return 0 } -func (x *UpdateResponse) GetValue() []byte { - if x != nil { - return x.Value - } - return nil -} - type DeleteRequest struct { state protoimpl.MessageState sizeCache protoimpl.SizeCache @@ -1829,184 +1811,181 @@ var file_resource_proto_rawDesc = []byte{ 0x2e, 0x72, 0x65, 0x73, 0x6f, 0x75, 0x72, 0x63, 0x65, 0x2e, 0x52, 0x65, 0x73, 0x6f, 0x75, 0x72, 0x63, 0x65, 0x4b, 0x65, 0x79, 0x52, 0x03, 0x6b, 0x65, 0x79, 0x12, 0x14, 0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, - 0x22, 0x7e, 0x0a, 0x0e, 0x43, 0x72, 0x65, 0x61, 0x74, 0x65, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, + 0x22, 0x68, 0x0a, 0x0e, 0x43, 0x72, 0x65, 0x61, 0x74, 0x65, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 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With managed annotations included - bytes value = 3; } message UpdateRequest { @@ -170,9 +167,6 @@ message UpdateResponse { // The updated resource version int64 resource_version = 2; - - // The resource JSON. With managed annotations included - bytes value = 3; } message DeleteRequest { diff --git a/pkg/storage/unified/resource/server.go b/pkg/storage/unified/resource/server.go index 367b0a8e458..8cdd5f6498e 100644 --- a/pkg/storage/unified/resource/server.go +++ b/pkg/storage/unified/resource/server.go @@ -10,12 +10,11 @@ import ( "sync" "time" - "github.com/google/uuid" "go.opentelemetry.io/otel/trace" "go.opentelemetry.io/otel/trace/noop" apierrors "k8s.io/apimachinery/pkg/api/errors" metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" - "k8s.io/apimachinery/pkg/types" + "k8s.io/apimachinery/pkg/apis/meta/v1/unstructured" "github.com/grafana/grafana/pkg/apimachinery/identity" "github.com/grafana/grafana/pkg/apimachinery/utils" @@ -179,18 +178,42 @@ func (s *server) Stop() { } // Old value indicates an update -- otherwise a create -func (s *server) newEventBuilder(ctx context.Context, key *ResourceKey, value, oldValue []byte) (*writeEventBuilder, error) { - event, err := newEventFromBytes(value, oldValue) - if err != nil { - return nil, err - } - event.Key = key - event.Requester, err = identity.GetRequester(ctx) +func (s *server) newEvent(ctx context.Context, key *ResourceKey, value, oldValue []byte) (*WriteEvent, error) { + user, err := identity.GetRequester(ctx) if err != nil { return nil, ErrUserNotFoundInContext } + tmp := &unstructured.Unstructured{} + err = tmp.UnmarshalJSON(value) + if err != nil { + return nil, err + } + obj, err := utils.MetaAccessor(tmp) + if err != nil { + return nil, err + } + + event := &WriteEvent{ + Value: value, + Key: key, + Object: obj, + } + if oldValue == nil { + event.Type = WatchEvent_ADDED + } else { + event.Type = WatchEvent_MODIFIED + + temp := &unstructured.Unstructured{} + err = temp.UnmarshalJSON(oldValue) + if err != nil { + return nil, err + } + event.ObjectOld, err = utils.MetaAccessor(temp) + if err != nil { + return nil, err + } + } - obj := event.Meta if key.Namespace != obj.GetNamespace() { return nil, apierrors.NewBadRequest("key/namespace do not match") } @@ -218,7 +241,6 @@ func (s *server) newEventBuilder(ctx context.Context, key *ResourceKey, value, o return nil, apierrors.NewBadRequest( fmt.Sprintf("key/name do not match (key: %s, name: %s)", key.Name, obj.GetName())) } - obj.SetGenerateName("") err = validateName(obj.GetName()) if err != nil { return nil, err @@ -226,7 +248,7 @@ func (s *server) newEventBuilder(ctx context.Context, key *ResourceKey, value, o folder := obj.GetFolder() if folder != "" { - err = s.access.CanWriteFolder(ctx, event.Requester, folder) + err = s.access.CanWriteFolder(ctx, user, folder) if err != nil { return nil, err } @@ -236,21 +258,11 @@ func (s *server) newEventBuilder(ctx context.Context, key *ResourceKey, value, o return nil, apierrors.NewBadRequest("invalid origin info") } if origin != nil { - err = s.access.CanWriteOrigin(ctx, event.Requester, origin.Name) + err = s.access.CanWriteOrigin(ctx, user, origin.Name) if err != nil { return nil, err } } - obj.SetOriginInfo(origin) - - // Ensure old values do not mutate things they should not - if event.OldMeta != nil { - old := event.OldMeta - - obj.SetUID(old.GetUID()) - obj.SetCreatedBy(old.GetCreatedBy()) - obj.SetCreationTimestamp(old.GetCreationTimestamp()) - } return event, nil } @@ -272,30 +284,15 @@ func (s *server) Create(ctx context.Context, req *CreateRequest) (*CreateRespons return rsp, nil } - builder, err := s.newEventBuilder(ctx, req.Key, req.Value, nil) + event, err := s.newEvent(ctx, req.Key, req.Value, nil) if err != nil { rsp.Error, err = errToStatus(err) return rsp, err } - obj := builder.Meta - obj.SetCreatedBy(builder.Requester.GetUID().String()) - obj.SetUpdatedBy("") - obj.SetUpdatedTimestamp(nil) - obj.SetCreationTimestamp(metav1.NewTime(time.UnixMilli(s.now()))) - obj.SetUID(types.UID(uuid.New().String())) - - event, err := builder.toEvent() + rsp.ResourceVersion, err = s.backend.WriteEvent(ctx, *event) if err != nil { rsp.Error, err = errToStatus(err) - return rsp, err - } - - rsp.ResourceVersion, err = s.backend.WriteEvent(ctx, event) - if err == nil { - rsp.Value = event.Value // with mutated fields - } else { - rsp.Error, err = errToStatus(err) } return rsp, err } @@ -367,17 +364,7 @@ func (s *server) Update(ctx context.Context, req *UpdateRequest) (*UpdateRespons return nil, ErrOptimisticLockingFailed } - builder, err := s.newEventBuilder(ctx, req.Key, req.Value, latest.Value) - if err != nil { - rsp.Error, err = errToStatus(err) - return rsp, err - } - - obj := builder.Meta - obj.SetUpdatedBy(builder.Requester.GetUID().String()) - obj.SetUpdatedTimestampMillis(time.Now().UnixMilli()) - - event, err := builder.toEvent() + event, err := s.newEvent(ctx, req.Key, req.Value, latest.Value) if err != nil { rsp.Error, err = errToStatus(err) return rsp, err @@ -386,11 +373,9 @@ func (s *server) Update(ctx context.Context, req *UpdateRequest) (*UpdateRespons event.Type = WatchEvent_MODIFIED event.PreviousRV = latest.ResourceVersion - rsp.ResourceVersion, err = s.backend.WriteEvent(ctx, event) + rsp.ResourceVersion, err = s.backend.WriteEvent(ctx, *event) rsp.Error, err = errToStatus(err) - if err == nil { - rsp.Value = event.Value // with mutated fields - } else { + if err != nil { rsp.Error, err = errToStatus(err) } return rsp, err diff --git a/pkg/storage/unified/resource/server_test.go b/pkg/storage/unified/resource/server_test.go index 37993255779..62c2a85e77d 100644 --- a/pkg/storage/unified/resource/server_test.go +++ b/pkg/storage/unified/resource/server_test.go @@ -108,7 +108,7 @@ func TestSimpleServer(t *testing.T) { // Now update the value tmp := &unstructured.Unstructured{} - err = json.Unmarshal(created.Value, tmp) + err = json.Unmarshal(found.Value, tmp) require.NoError(t, err) now := time.Now().UnixMilli()