wehub-resource-sync
135 lines
4.5 KiB
Go
135 lines
4.5 KiB
Go
// Copyright 2025 Dolthub, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package extensions
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import (
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"context"
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"github.com/cockroachdb/errors"
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"github.com/dolthub/dolt/go/libraries/doltcore/doltdb"
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"github.com/dolthub/dolt/go/libraries/doltcore/merge"
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"github.com/dolthub/dolt/go/store/hash"
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"github.com/dolthub/dolt/go/store/prolly"
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"github.com/dolthub/doltgresql/core/id"
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"github.com/dolthub/doltgresql/core/rootobject/objinterface"
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"github.com/dolthub/doltgresql/flatbuffers/gen/serial"
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)
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// storage is used to read from and write to the root.
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var storage = objinterface.RootObjectSerializer{
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Bytes: (*serial.RootValue).ExtensionsBytes,
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RootValueAdd: serial.RootValueAddExtensions,
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}
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// HandleMerge implements the interface objinterface.Collection.
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func (*Collection) HandleMerge(ctx context.Context, mro merge.MergeRootObject) (doltdb.RootObject, *merge.MergeStats, error) {
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ourExt := mro.OurRootObj.(Extension)
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theirExt := mro.TheirRootObj.(Extension)
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// Ensure that they have the same ID
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if ourExt.ExtName != theirExt.ExtName {
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return nil, nil, errors.Newf("attempted to merge different extensions: `%s` and `%s`",
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ourExt.Name().String(), theirExt.Name().String())
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}
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ourHash, err := ourExt.HashOf(ctx)
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if err != nil {
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return nil, nil, err
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}
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theirHash, err := theirExt.HashOf(ctx)
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if err != nil {
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return nil, nil, err
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}
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// We always keep the newest extension. I don't think this is actually valid since old extensions are very likely
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// to have invalid function signatures, but this is a start for now.
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// TODO: figure out a better method
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if ourHash.Equal(theirHash) || ourExt.CompareVersions(theirExt) >= 0 {
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return mro.OurRootObj, &merge.MergeStats{
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Operation: merge.TableUnmodified,
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Adds: 0,
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Deletes: 0,
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Modifications: 0,
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DataConflicts: 0,
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SchemaConflicts: 0,
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ConstraintViolations: 0,
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}, nil
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} else {
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return mro.TheirRootObj, &merge.MergeStats{
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Operation: merge.TableModified,
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Adds: 0,
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Deletes: 0,
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Modifications: 1,
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DataConflicts: 0,
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SchemaConflicts: 0,
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ConstraintViolations: 0,
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}, nil
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}
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}
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// LoadCollection implements the interface objinterface.Collection.
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func (*Collection) LoadCollection(ctx context.Context, root objinterface.RootValue) (objinterface.Collection, error) {
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return LoadExtensions(ctx, root)
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}
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// LoadCollectionHash implements the interface objinterface.Collection.
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func (*Collection) LoadCollectionHash(ctx context.Context, root objinterface.RootValue) (hash.Hash, error) {
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m, ok, err := storage.GetProllyMap(ctx, root)
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if err != nil || !ok {
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return hash.Hash{}, err
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}
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return m.HashOf(), nil
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}
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// LoadExtensions loads the extensions collection from the given root.
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func LoadExtensions(ctx context.Context, root objinterface.RootValue) (*Collection, error) {
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m, ok, err := storage.GetProllyMap(ctx, root)
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if err != nil {
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return nil, err
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}
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if !ok {
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m, err = prolly.NewEmptyAddressMap(root.NodeStore())
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if err != nil {
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return nil, err
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}
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}
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return NewCollection(ctx, m, root.NodeStore())
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}
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// ResolveNameFromObjects implements the interface objinterface.Collection.
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func (*Collection) ResolveNameFromObjects(ctx context.Context, name doltdb.TableName, rootObjects []objinterface.RootObject) (doltdb.TableName, id.Id, error) {
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tempCollection := Collection{
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accessCache: make(map[id.Extension]Extension),
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}
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for _, rootObject := range rootObjects {
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if obj, ok := rootObject.(Extension); ok {
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tempCollection.accessCache[obj.ExtName] = obj
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}
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}
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return tempCollection.ResolveName(ctx, name)
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}
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// Serializer implements the interface objinterface.Collection.
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func (*Collection) Serializer() objinterface.RootObjectSerializer {
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return storage
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}
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// UpdateRoot implements the interface objinterface.Collection.
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func (pge *Collection) UpdateRoot(ctx context.Context, root objinterface.RootValue) (objinterface.RootValue, error) {
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m, err := pge.Map(ctx)
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if err != nil {
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return nil, err
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}
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return storage.WriteProllyMap(ctx, root, m)
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}
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