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Storage: prepare in resource bytes in storage.Interface, not the backend (#90513)

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* prepare in k8s

* prepare in k8s

* prepare in k8s

* simplify event creation

* decode the inputs
This commit is contained in:
Ryan McKinley 2024-07-17 07:40:03 -07:00 committed by GitHub
parent 2616366a0a
commit 07c2d886fa
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
7 changed files with 304 additions and 324 deletions
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89
pkg/storage/unified/apistore/prepare.go Normal file
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@ -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
}

27
pkg/storage/unified/apistore/storage.go
View File

@ -6,7 +6,6 @@
package apistore package apistore
import ( import (
"bytes"
"context" "context"
"errors" "errors"
"fmt" "fmt"
@ -126,24 +125,15 @@ func (s *Storage) Create(ctx context.Context, key string, obj runtime.Object, ou
return err return err
} }
err = s.Versioner().PrepareObjectForStorage(obj) value, err := s.prepareObjectForStorage(ctx, obj)
if err != nil { if err != nil {
return err return err
} }
var buf bytes.Buffer
err = s.codec.Encode(obj, &buf)
if err != nil {
return err
}
cmd := &resource.CreateRequest{ cmd := &resource.CreateRequest{
Key: k, Key: k,
Value: buf.Bytes(), Value: value,
} }
// TODO?? blob from context?
rsp, err := s.store.Create(ctx, cmd) rsp, err := s.store.Create(ctx, cmd)
if err != nil { if err != nil {
return err 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) return fmt.Errorf("error in status %+v", rsp.Error)
} }
// Create into the out value // Decode into the result (can we just copy?)
_, _, err = s.codec.Decode(rsp.Value, nil, out) _, _, err = s.codec.Decode(cmd.Value, nil, out)
if err != nil { if err != nil {
return err return err
} }
@ -505,13 +495,12 @@ func (s *Storage) GuaranteedUpdate(
) )
} }
var buf bytes.Buffer value, err := s.prepareObjectForUpdate(ctx, updatedObj, destination)
err = s.codec.Encode(updatedObj, &buf)
if err != nil { if err != nil {
return err return err
} }
req := &resource.UpdateRequest{Key: k, Value: buf.Bytes()} req := &resource.UpdateRequest{Key: k, Value: value}
rsp, err := s.store.Update(ctx, req) rsp, err := s.store.Update(ctx, req)
if err != nil { if err != nil {
return err return err
@ -521,8 +510,8 @@ func (s *Storage) GuaranteedUpdate(
return err return err
} }
// Read the mutated fields the response field // Decode into the response (can we just copy?)
_, _, err = s.codec.Decode(rsp.Value, nil, destination) _, _, err = s.codec.Decode(value, nil, destination)
if err != nil { if err != nil {
return err return err
} }

56
pkg/storage/unified/resource/event.go
View File

@ -3,9 +3,6 @@ package resource
import ( import (
context "context" context "context"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"github.com/grafana/grafana/pkg/apimachinery/identity"
"github.com/grafana/grafana/pkg/apimachinery/utils" "github.com/grafana/grafana/pkg/apimachinery/utils"
) )
@ -37,56 +34,3 @@ type WrittenEvent struct {
// A function to write events // A function to write events
type EventAppender = func(context.Context, *WriteEvent) (int64, error) 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
}

353
pkg/storage/unified/resource/resource.pb.go
View File

@ -736,8 +736,6 @@ type CreateResponse struct {
Error *ErrorResult `protobuf:"bytes,1,opt,name=error,proto3" json:"error,omitempty"` Error *ErrorResult `protobuf:"bytes,1,opt,name=error,proto3" json:"error,omitempty"`
// The updated resource version // The updated resource version
ResourceVersion int64 `protobuf:"varint,2,opt,name=resource_version,json=resourceVersion,proto3" json:"resource_version,omitempty"` 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() { func (x *CreateResponse) Reset() {
@ -786,13 +784,6 @@ func (x *CreateResponse) GetResourceVersion() int64 {
return 0 return 0
} }
func (x *CreateResponse) GetValue() []byte {
if x != nil {
return x.Value
}
return nil
}
type UpdateRequest struct { type UpdateRequest struct {
state protoimpl.MessageState state protoimpl.MessageState
sizeCache protoimpl.SizeCache sizeCache protoimpl.SizeCache
@ -868,8 +859,6 @@ type UpdateResponse struct {
Error *ErrorResult `protobuf:"bytes,1,opt,name=error,proto3" json:"error,omitempty"` Error *ErrorResult `protobuf:"bytes,1,opt,name=error,proto3" json:"error,omitempty"`
// The updated resource version // The updated resource version
ResourceVersion int64 `protobuf:"varint,2,opt,name=resource_version,json=resourceVersion,proto3" json:"resource_version,omitempty"` 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() { func (x *UpdateResponse) Reset() {
@ -918,13 +907,6 @@ func (x *UpdateResponse) GetResourceVersion() int64 {
return 0 return 0
} }
func (x *UpdateResponse) GetValue() []byte {
if x != nil {
return x.Value
}
return nil
}
type DeleteRequest struct { type DeleteRequest struct {
state protoimpl.MessageState state protoimpl.MessageState
sizeCache protoimpl.SizeCache 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, 0x2e, 0x72, 0x65, 0x73, 0x6f, 0x75, 0x72, 0x63, 0x65, 0x2e, 0x52, 0x65, 0x73, 0x6f, 0x75, 0x72,
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} }
var ( var (

6
pkg/storage/unified/resource/resource.proto
View File

@ -148,9 +148,6 @@ message CreateResponse {
// The updated resource version // The updated resource version
int64 resource_version = 2; int64 resource_version = 2;
// The resource JSON. With managed annotations included
bytes value = 3;
} }
message UpdateRequest { message UpdateRequest {
@ -170,9 +167,6 @@ message UpdateResponse {
// The updated resource version // The updated resource version
int64 resource_version = 2; int64 resource_version = 2;
// The resource JSON. With managed annotations included
bytes value = 3;
} }
message DeleteRequest { message DeleteRequest {

95
pkg/storage/unified/resource/server.go
View File

@ -10,12 +10,11 @@ import (
"sync" "sync"
"time" "time"
"github.com/google/uuid"
"go.opentelemetry.io/otel/trace" "go.opentelemetry.io/otel/trace"
"go.opentelemetry.io/otel/trace/noop" "go.opentelemetry.io/otel/trace/noop"
apierrors "k8s.io/apimachinery/pkg/api/errors" apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" 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/identity"
"github.com/grafana/grafana/pkg/apimachinery/utils" "github.com/grafana/grafana/pkg/apimachinery/utils"
@ -179,18 +178,42 @@ func (s *server) Stop() {
} }
// Old value indicates an update -- otherwise a create // Old value indicates an update -- otherwise a create
func (s *server) newEventBuilder(ctx context.Context, key *ResourceKey, value, oldValue []byte) (*writeEventBuilder, error) { func (s *server) newEvent(ctx context.Context, key *ResourceKey, value, oldValue []byte) (*WriteEvent, error) {
event, err := newEventFromBytes(value, oldValue) user, err := identity.GetRequester(ctx)
if err != nil {
return nil, err
}
event.Key = key
event.Requester, err = identity.GetRequester(ctx)
if err != nil { if err != nil {
return nil, ErrUserNotFoundInContext 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() { if key.Namespace != obj.GetNamespace() {
return nil, apierrors.NewBadRequest("key/namespace do not match") 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( return nil, apierrors.NewBadRequest(
fmt.Sprintf("key/name do not match (key: %s, name: %s)", key.Name, obj.GetName())) fmt.Sprintf("key/name do not match (key: %s, name: %s)", key.Name, obj.GetName()))
} }
obj.SetGenerateName("")
err = validateName(obj.GetName()) err = validateName(obj.GetName())
if err != nil { if err != nil {
return nil, err return nil, err
@ -226,7 +248,7 @@ func (s *server) newEventBuilder(ctx context.Context, key *ResourceKey, value, o
folder := obj.GetFolder() folder := obj.GetFolder()
if folder != "" { if folder != "" {
err = s.access.CanWriteFolder(ctx, event.Requester, folder) err = s.access.CanWriteFolder(ctx, user, folder)
if err != nil { if err != nil {
return nil, err 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") return nil, apierrors.NewBadRequest("invalid origin info")
} }
if origin != nil { if origin != nil {
err = s.access.CanWriteOrigin(ctx, event.Requester, origin.Name) err = s.access.CanWriteOrigin(ctx, user, origin.Name)
if err != nil { if err != nil {
return nil, err 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 return event, nil
} }
@ -272,30 +284,15 @@ func (s *server) Create(ctx context.Context, req *CreateRequest) (*CreateRespons
return rsp, nil 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 { if err != nil {
rsp.Error, err = errToStatus(err) rsp.Error, err = errToStatus(err)
return rsp, err return rsp, err
} }
obj := builder.Meta rsp.ResourceVersion, err = s.backend.WriteEvent(ctx, *event)
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()
if err != nil { if err != nil {
rsp.Error, err = errToStatus(err) 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 return rsp, err
} }
@ -367,17 +364,7 @@ func (s *server) Update(ctx context.Context, req *UpdateRequest) (*UpdateRespons
return nil, ErrOptimisticLockingFailed return nil, ErrOptimisticLockingFailed
} }
builder, err := s.newEventBuilder(ctx, req.Key, req.Value, latest.Value) event, err := s.newEvent(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()
if err != nil { if err != nil {
rsp.Error, err = errToStatus(err) rsp.Error, err = errToStatus(err)
return rsp, err return rsp, err
@ -386,11 +373,9 @@ func (s *server) Update(ctx context.Context, req *UpdateRequest) (*UpdateRespons
event.Type = WatchEvent_MODIFIED event.Type = WatchEvent_MODIFIED
event.PreviousRV = latest.ResourceVersion 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) rsp.Error, err = errToStatus(err)
if err == nil { if err != nil {
rsp.Value = event.Value // with mutated fields
} else {
rsp.Error, err = errToStatus(err) rsp.Error, err = errToStatus(err)
} }
return rsp, err return rsp, err

2
pkg/storage/unified/resource/server_test.go
View File

@ -108,7 +108,7 @@ func TestSimpleServer(t *testing.T) {
// Now update the value // Now update the value
tmp := &unstructured.Unstructured{} tmp := &unstructured.Unstructured{}
err = json.Unmarshal(created.Value, tmp) err = json.Unmarshal(found.Value, tmp)
require.NoError(t, err) require.NoError(t, err)
now := time.Now().UnixMilli() now := time.Now().UnixMilli()