mirror of
https://github.com/harness/drone.git
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97 lines
2.7 KiB
Go
97 lines
2.7 KiB
Go
// Copyright 2023 Harness, 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 refcache
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import (
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"context"
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"fmt"
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"strconv"
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"time"
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"github.com/harness/gitness/app/paths"
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"github.com/harness/gitness/app/store"
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"github.com/harness/gitness/cache"
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"github.com/harness/gitness/types"
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)
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// SpaceCache holds Space objects fetched by space reference.
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// Whenever a space object needs be fetched by the full path and used only for read operations,
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// it should be fetched using this cache.
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type SpaceCache cache.Cache[string, *types.Space]
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// spaceCache is a decorator of a Cache required to handle path transformations.
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type spaceCache struct {
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inner SpaceCache
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spacePathTransformation store.SpacePathTransformation
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}
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func (c spaceCache) Get(ctx context.Context, key string) (*types.Space, error) {
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segments := paths.Segments(key)
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uniqueKey := ""
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for i, segment := range segments {
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uniqueKey = paths.Concatenate(uniqueKey, c.spacePathTransformation(segment, i == 0))
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}
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return c.inner.Get(ctx, uniqueKey)
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}
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func (c spaceCache) Stats() (int64, int64) {
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return c.inner.Stats()
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}
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func NewSpaceCache(
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spacePathStore store.SpacePathStore,
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spaceStore store.SpaceStore,
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spacePathTransformation store.SpacePathTransformation,
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) SpaceCache {
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return &spaceCache{
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inner: cache.New[string, *types.Space](
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pathToSpaceCacheGetter{
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spacePathStore: spacePathStore,
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spaceStore: spaceStore,
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},
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1*time.Minute),
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spacePathTransformation: spacePathTransformation,
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}
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}
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type pathToSpaceCacheGetter struct {
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spacePathStore store.SpacePathStore
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spaceStore store.SpaceStore
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}
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func (g pathToSpaceCacheGetter) Find(ctx context.Context, spaceRef string) (*types.Space, error) {
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// ASSUMPTION: digits only is not a valid space path
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id, err := strconv.ParseInt(spaceRef, 10, 64)
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if err != nil {
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var path *types.SpacePath
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path, err = g.spacePathStore.FindByPath(ctx, spaceRef)
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if err != nil {
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return nil, fmt.Errorf("failed to get path: %w", err)
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}
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id = path.SpaceID
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}
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space, err := g.spaceStore.Find(ctx, id)
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if err != nil {
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return nil, fmt.Errorf("failed to find space by id: %w", err)
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}
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space.Version = -1 // destroy the space version so that it can't be used for update
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return space, nil
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}
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