mirror of
https://github.com/gohugoio/hugo.git
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243 lines
7.6 KiB
Go
243 lines
7.6 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 create contains functions for to create Resource objects. This will
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// typically non-files.
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package create
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import (
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"net/http"
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"os"
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"path"
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"path/filepath"
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"strings"
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"time"
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"github.com/bep/logg"
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"github.com/gohugoio/httpcache"
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hhttpcache "github.com/gohugoio/hugo/cache/httpcache"
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"github.com/gohugoio/hugo/helpers"
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"github.com/gohugoio/hugo/hugofs/glob"
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"github.com/gohugoio/hugo/identity"
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"github.com/gohugoio/hugo/hugofs"
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"github.com/gohugoio/hugo/cache/dynacache"
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"github.com/gohugoio/hugo/cache/filecache"
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"github.com/gohugoio/hugo/common/hcontext"
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"github.com/gohugoio/hugo/common/hugio"
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"github.com/gohugoio/hugo/common/tasks"
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"github.com/gohugoio/hugo/resources"
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"github.com/gohugoio/hugo/resources/resource"
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)
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// Client contains methods to create Resource objects.
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// tasks to Resource objects.
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type Client struct {
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rs *resources.Spec
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httpClient *http.Client
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httpCacheConfig hhttpcache.ConfigCompiled
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cacheGetResource *filecache.Cache
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resourceIDDispatcher hcontext.ContextDispatcher[string]
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// Set when watching.
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remoteResourceChecker *tasks.RunEvery
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remoteResourceLogger logg.LevelLogger
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}
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type contextKey string
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// New creates a new Client with the given specification.
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func New(rs *resources.Spec) *Client {
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fileCache := rs.FileCaches.GetResourceCache()
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resourceIDDispatcher := hcontext.NewContextDispatcher[string](contextKey("resourceID"))
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httpCacheConfig := rs.Cfg.GetConfigSection("httpCacheCompiled").(hhttpcache.ConfigCompiled)
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var remoteResourceChecker *tasks.RunEvery
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if rs.Cfg.Watching() && !httpCacheConfig.IsPollingDisabled() {
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remoteResourceChecker = &tasks.RunEvery{
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HandleError: func(name string, err error) {
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rs.Logger.Warnf("Failed to check remote resource: %s", err)
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},
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RunImmediately: false,
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}
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if err := remoteResourceChecker.Start(); err != nil {
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panic(err)
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}
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rs.BuildClosers.Add(remoteResourceChecker)
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}
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httpTimeout := 2 * time.Minute // Need to cover retries.
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if httpTimeout < (rs.Cfg.Timeout() + 30*time.Second) {
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httpTimeout = rs.Cfg.Timeout() + 30*time.Second
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}
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return &Client{
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rs: rs,
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httpCacheConfig: httpCacheConfig,
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resourceIDDispatcher: resourceIDDispatcher,
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remoteResourceChecker: remoteResourceChecker,
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remoteResourceLogger: rs.Logger.InfoCommand("remote"),
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httpClient: &http.Client{
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Timeout: httpTimeout,
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Transport: &httpcache.Transport{
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Cache: fileCache.AsHTTPCache(),
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CacheKey: func(req *http.Request) string {
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return resourceIDDispatcher.Get(req.Context())
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},
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Around: func(req *http.Request, key string) func() {
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return fileCache.NamedLock(key)
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},
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AlwaysUseCachedResponse: func(req *http.Request, key string) bool {
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return !httpCacheConfig.For(req.URL.String())
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},
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ShouldCache: func(req *http.Request, resp *http.Response, key string) bool {
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return shouldCache(resp.StatusCode)
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},
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MarkCachedResponses: true,
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EnableETagPair: true,
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Transport: &transport{
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Cfg: rs.Cfg,
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Logger: rs.Logger,
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},
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},
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},
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cacheGetResource: fileCache,
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}
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}
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// Copy copies r to the new targetPath.
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func (c *Client) Copy(r resource.Resource, targetPath string) (resource.Resource, error) {
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key := dynacache.CleanKey(targetPath) + "__copy"
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return c.rs.ResourceCache.GetOrCreate(key, func() (resource.Resource, error) {
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return resources.Copy(r, targetPath), nil
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})
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}
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// Get creates a new Resource by opening the given pathname in the assets filesystem.
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func (c *Client) Get(pathname string) (resource.Resource, error) {
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pathname = path.Clean(pathname)
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key := dynacache.CleanKey(pathname) + "__get"
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return c.rs.ResourceCache.GetOrCreate(key, func() (resource.Resource, error) {
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// The resource file will not be read before it gets used (e.g. in .Content),
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// so we need to check that the file exists here.
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filename := filepath.FromSlash(pathname)
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fi, err := c.rs.BaseFs.Assets.Fs.Stat(filename)
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if err != nil {
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if os.IsNotExist(err) {
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return nil, nil
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}
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// A real error.
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return nil, err
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}
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pi := fi.(hugofs.FileMetaInfo).Meta().PathInfo
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return c.rs.NewResource(resources.ResourceSourceDescriptor{
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LazyPublish: true,
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OpenReadSeekCloser: func() (hugio.ReadSeekCloser, error) {
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return c.rs.BaseFs.Assets.Fs.Open(filename)
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},
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Path: pi,
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GroupIdentity: pi,
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TargetPath: pathname,
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})
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})
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}
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// Match gets the resources matching the given pattern from the assets filesystem.
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func (c *Client) Match(pattern string) (resource.Resources, error) {
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return c.match("__match", pattern, nil, false)
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}
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func (c *Client) ByType(tp string) resource.Resources {
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res, err := c.match(path.Join("_byType", tp), "**", func(r resource.Resource) bool { return r.ResourceType() == tp }, false)
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if err != nil {
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panic(err)
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}
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return res
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}
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// GetMatch gets first resource matching the given pattern from the assets filesystem.
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func (c *Client) GetMatch(pattern string) (resource.Resource, error) {
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res, err := c.match("__get-match", pattern, nil, true)
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if err != nil || len(res) == 0 {
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return nil, err
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}
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return res[0], err
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}
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func (c *Client) match(name, pattern string, matchFunc func(r resource.Resource) bool, firstOnly bool) (resource.Resources, error) {
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pattern = glob.NormalizePath(pattern)
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partitions := glob.FilterGlobParts(strings.Split(pattern, "/"))
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key := path.Join(name, path.Join(partitions...))
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key = path.Join(key, pattern)
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return c.rs.ResourceCache.GetOrCreateResources(key, func() (resource.Resources, error) {
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var res resource.Resources
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handle := func(info hugofs.FileMetaInfo) (bool, error) {
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meta := info.Meta()
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r, err := c.rs.NewResource(resources.ResourceSourceDescriptor{
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LazyPublish: true,
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OpenReadSeekCloser: func() (hugio.ReadSeekCloser, error) {
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return meta.Open()
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},
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NameNormalized: meta.PathInfo.Path(),
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NameOriginal: meta.PathInfo.Unnormalized().Path(),
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GroupIdentity: meta.PathInfo,
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TargetPath: meta.PathInfo.Unnormalized().Path(),
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})
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if err != nil {
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return true, err
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}
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if matchFunc != nil && !matchFunc(r) {
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return false, nil
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}
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res = append(res, r)
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return firstOnly, nil
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}
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if err := hugofs.Glob(c.rs.BaseFs.Assets.Fs, pattern, handle); err != nil {
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return nil, err
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}
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return res, nil
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})
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}
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// FromString creates a new Resource from a string with the given relative target path.
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// TODO(bep) see #10912; we currently emit a warning for this config scenario.
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func (c *Client) FromString(targetPath, content string) (resource.Resource, error) {
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targetPath = path.Clean(targetPath)
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key := dynacache.CleanKey(targetPath) + helpers.MD5String(content)
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r, err := c.rs.ResourceCache.GetOrCreate(key, func() (resource.Resource, error) {
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return c.rs.NewResource(
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resources.ResourceSourceDescriptor{
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LazyPublish: true,
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GroupIdentity: identity.Anonymous, // All usage of this resource are tracked via its string content.
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OpenReadSeekCloser: func() (hugio.ReadSeekCloser, error) {
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return hugio.NewReadSeekerNoOpCloserFromString(content), nil
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},
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TargetPath: targetPath,
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})
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})
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return r, err
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}
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