mirror of https://github.com/gohugoio/hugo.git
132 lines
3.9 KiB
Go
132 lines
3.9 KiB
Go
// Copyright 2019 The Hugo Authors. All rights reserved.
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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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// 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 resources
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import (
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"context"
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"encoding/json"
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"io"
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"path"
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"path/filepath"
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"strings"
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"sync"
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"github.com/gohugoio/hugo/resources/resource"
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"github.com/gohugoio/hugo/cache/dynacache"
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"github.com/gohugoio/hugo/cache/filecache"
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)
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func newResourceCache(rs *Spec, memCache *dynacache.Cache) *ResourceCache {
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return &ResourceCache{
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fileCache: rs.FileCaches.AssetsCache(),
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cacheResource: dynacache.GetOrCreatePartition[string, resource.Resource](
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memCache,
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"/res1",
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dynacache.OptionsPartition{ClearWhen: dynacache.ClearOnChange, Weight: 40},
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),
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cacheResources: dynacache.GetOrCreatePartition[string, resource.Resources](
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memCache,
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"/ress",
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dynacache.OptionsPartition{ClearWhen: dynacache.ClearOnRebuild, Weight: 40},
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),
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cacheResourceTransformation: dynacache.GetOrCreatePartition[string, *resourceAdapterInner](
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memCache,
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"/res1/tra",
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dynacache.OptionsPartition{ClearWhen: dynacache.ClearOnChange, Weight: 40},
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),
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}
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}
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type ResourceCache struct {
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sync.RWMutex
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cacheResource *dynacache.Partition[string, resource.Resource]
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cacheResources *dynacache.Partition[string, resource.Resources]
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cacheResourceTransformation *dynacache.Partition[string, *resourceAdapterInner]
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fileCache *filecache.Cache
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}
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func (c *ResourceCache) cleanKey(key string) string {
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return strings.TrimPrefix(path.Clean(strings.ToLower(filepath.ToSlash(key))), "/")
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}
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func (c *ResourceCache) Get(ctx context.Context, key string) (resource.Resource, bool) {
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return c.cacheResource.Get(ctx, key)
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}
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func (c *ResourceCache) GetOrCreate(key string, f func() (resource.Resource, error)) (resource.Resource, error) {
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return c.cacheResource.GetOrCreate(key, func(key string) (resource.Resource, error) {
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return f()
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})
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}
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func (c *ResourceCache) GetOrCreateResources(key string, f func() (resource.Resources, error)) (resource.Resources, error) {
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return c.cacheResources.GetOrCreate(key, func(key string) (resource.Resources, error) {
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return f()
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})
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}
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func (c *ResourceCache) getFilenames(key string) (string, string) {
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filenameMeta := key + ".json"
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filenameContent := key + ".content"
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return filenameMeta, filenameContent
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}
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func (c *ResourceCache) getFromFile(key string) (filecache.ItemInfo, io.ReadCloser, transformedResourceMetadata, bool) {
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c.RLock()
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defer c.RUnlock()
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var meta transformedResourceMetadata
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filenameMeta, filenameContent := c.getFilenames(key)
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_, jsonContent, _ := c.fileCache.GetBytes(filenameMeta)
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if jsonContent == nil {
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return filecache.ItemInfo{}, nil, meta, false
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}
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if err := json.Unmarshal(jsonContent, &meta); err != nil {
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return filecache.ItemInfo{}, nil, meta, false
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}
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fi, rc, _ := c.fileCache.Get(filenameContent)
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return fi, rc, meta, rc != nil
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}
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// writeMeta writes the metadata to file and returns a writer for the content part.
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func (c *ResourceCache) writeMeta(key string, meta transformedResourceMetadata) (filecache.ItemInfo, io.WriteCloser, error) {
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filenameMeta, filenameContent := c.getFilenames(key)
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raw, err := json.Marshal(meta)
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if err != nil {
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return filecache.ItemInfo{}, nil, err
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}
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_, fm, err := c.fileCache.WriteCloser(filenameMeta)
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if err != nil {
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return filecache.ItemInfo{}, nil, err
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}
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defer fm.Close()
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if _, err := fm.Write(raw); err != nil {
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return filecache.ItemInfo{}, nil, err
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}
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fi, fc, err := c.fileCache.WriteCloser(filenameContent)
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return fi, fc, err
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}
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