ref: 8a7ef3cf4ee3c65d4edba17b1608c770b6da1673
dir: /hugolib/hugo_sites.go/
// Copyright 2019 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package hugolib
import (
"context"
"io"
"path/filepath"
"sort"
"strings"
"sync"
"sync/atomic"
"github.com/gohugoio/hugo/identity"
radix "github.com/armon/go-radix"
"github.com/gohugoio/hugo/output"
"github.com/gohugoio/hugo/parser/metadecoders"
"github.com/gohugoio/hugo/common/para"
"github.com/gohugoio/hugo/hugofs"
"github.com/pkg/errors"
"github.com/gohugoio/hugo/source"
"github.com/bep/gitmap"
"github.com/gohugoio/hugo/config"
"github.com/gohugoio/hugo/publisher"
"github.com/gohugoio/hugo/common/herrors"
"github.com/gohugoio/hugo/common/loggers"
"github.com/gohugoio/hugo/deps"
"github.com/gohugoio/hugo/helpers"
"github.com/gohugoio/hugo/langs"
"github.com/gohugoio/hugo/lazy"
"github.com/gohugoio/hugo/langs/i18n"
"github.com/gohugoio/hugo/resources/page"
"github.com/gohugoio/hugo/tpl"
"github.com/gohugoio/hugo/tpl/tplimpl"
)
// HugoSites represents the sites to build. Each site represents a language.
type HugoSites struct {
Sites []*Site
multilingual *Multilingual
// Multihost is set if multilingual and baseURL set on the language level.
multihost bool
// If this is running in the dev server.
running bool
// Serializes rebuilds when server is running.
runningMu sync.Mutex
// Render output formats for all sites.
renderFormats output.Formats
*deps.Deps
gitInfo *gitInfo
// As loaded from the /data dirs
data map[string]interface{}
content *pageMaps
// Keeps track of bundle directories and symlinks to enable partial rebuilding.
ContentChanges *contentChangeMap
init *hugoSitesInit
workers *para.Workers
numWorkers int
*fatalErrorHandler
*testCounters
}
// Only used in tests.
type testCounters struct {
contentRenderCounter uint64
}
func (h *testCounters) IncrContentRender() {
if h == nil {
return
}
atomic.AddUint64(&h.contentRenderCounter, 1)
}
type fatalErrorHandler struct {
mu sync.Mutex
h *HugoSites
err error
done bool
donec chan bool // will be closed when done
}
// FatalError error is used in some rare situations where it does not make sense to
// continue processing, to abort as soon as possible and log the error.
func (f *fatalErrorHandler) FatalError(err error) {
f.mu.Lock()
defer f.mu.Unlock()
if !f.done {
f.done = true
close(f.donec)
}
f.err = err
}
func (f *fatalErrorHandler) getErr() error {
f.mu.Lock()
defer f.mu.Unlock()
return f.err
}
func (f *fatalErrorHandler) Done() <-chan bool {
return f.donec
}
type hugoSitesInit struct {
// Loads the data from all of the /data folders.
data *lazy.Init
// Performs late initialization (before render) of the templates.
layouts *lazy.Init
// Loads the Git info for all the pages if enabled.
gitInfo *lazy.Init
// Maps page translations.
translations *lazy.Init
}
func (h *hugoSitesInit) Reset() {
h.data.Reset()
h.layouts.Reset()
h.gitInfo.Reset()
h.translations.Reset()
}
func (h *HugoSites) Data() map[string]interface{} {
if _, err := h.init.data.Do(); err != nil {
h.SendError(errors.Wrap(err, "failed to load data"))
return nil
}
return h.data
}
func (h *HugoSites) gitInfoForPage(p page.Page) (*gitmap.GitInfo, error) {
if _, err := h.init.gitInfo.Do(); err != nil {
return nil, err
}
if h.gitInfo == nil {
return nil, nil
}
return h.gitInfo.forPage(p), nil
}
func (h *HugoSites) siteInfos() page.Sites {
infos := make(page.Sites, len(h.Sites))
for i, site := range h.Sites {
infos[i] = site.Info
}
return infos
}
func (h *HugoSites) pickOneAndLogTheRest(errors []error) error {
if len(errors) == 0 {
return nil
}
var i int
for j, err := range errors {
// If this is in server mode, we want to return an error to the client
// with a file context, if possible.
if herrors.UnwrapErrorWithFileContext(err) != nil {
i = j
break
}
}
// Log the rest, but add a threshold to avoid flooding the log.
const errLogThreshold = 5
for j, err := range errors {
if j == i || err == nil {
continue
}
if j >= errLogThreshold {
break
}
h.Log.ERROR.Println(err)
}
return errors[i]
}
func (h *HugoSites) IsMultihost() bool {
return h != nil && h.multihost
}
// TODO(bep) consolidate
func (h *HugoSites) LanguageSet() map[string]int {
set := make(map[string]int)
for i, s := range h.Sites {
set[s.language.Lang] = i
}
return set
}
func (h *HugoSites) NumLogErrors() int {
if h == nil {
return 0
}
return int(h.Log.ErrorCounter.Count())
}
func (h *HugoSites) PrintProcessingStats(w io.Writer) {
stats := make([]*helpers.ProcessingStats, len(h.Sites))
for i := 0; i < len(h.Sites); i++ {
stats[i] = h.Sites[i].PathSpec.ProcessingStats
}
helpers.ProcessingStatsTable(w, stats...)
}
// GetContentPage finds a Page with content given the absolute filename.
// Returns nil if none found.
func (h *HugoSites) GetContentPage(filename string) page.Page {
var p page.Page
h.content.walkBundles(func(b *contentNode) bool {
if b.p == nil || b.fi == nil {
return false
}
if b.fi.Meta().Filename() == filename {
p = b.p
return true
}
return false
})
return p
}
// NewHugoSites creates a new collection of sites given the input sites, building
// a language configuration based on those.
func newHugoSites(cfg deps.DepsCfg, sites ...*Site) (*HugoSites, error) {
if cfg.Language != nil {
return nil, errors.New("Cannot provide Language in Cfg when sites are provided")
}
langConfig, err := newMultiLingualFromSites(cfg.Cfg, sites...)
if err != nil {
return nil, errors.Wrap(err, "failed to create language config")
}
var contentChangeTracker *contentChangeMap
numWorkers := config.GetNumWorkerMultiplier()
if numWorkers > len(sites) {
numWorkers = len(sites)
}
var workers *para.Workers
if numWorkers > 1 {
workers = para.New(numWorkers)
}
h := &HugoSites{
running: cfg.Running,
multilingual: langConfig,
multihost: cfg.Cfg.GetBool("multihost"),
Sites: sites,
workers: workers,
numWorkers: numWorkers,
init: &hugoSitesInit{
data: lazy.New(),
layouts: lazy.New(),
gitInfo: lazy.New(),
translations: lazy.New(),
},
}
h.fatalErrorHandler = &fatalErrorHandler{
h: h,
donec: make(chan bool),
}
h.init.data.Add(func() (interface{}, error) {
err := h.loadData(h.PathSpec.BaseFs.Data.Dirs)
if err != nil {
return nil, errors.Wrap(err, "failed to load data")
}
return nil, nil
})
h.init.layouts.Add(func() (interface{}, error) {
for _, s := range h.Sites {
if err := s.Tmpl().(tpl.TemplateManager).MarkReady(); err != nil {
return nil, err
}
}
return nil, nil
})
h.init.translations.Add(func() (interface{}, error) {
if len(h.Sites) > 1 {
allTranslations := pagesToTranslationsMap(h.Sites)
assignTranslationsToPages(allTranslations, h.Sites)
}
return nil, nil
})
h.init.gitInfo.Add(func() (interface{}, error) {
err := h.loadGitInfo()
if err != nil {
return nil, errors.Wrap(err, "failed to load Git info")
}
return nil, nil
})
for _, s := range sites {
s.h = h
}
if err := applyDeps(cfg, sites...); err != nil {
return nil, errors.Wrap(err, "add site dependencies")
}
h.Deps = sites[0].Deps
// Only needed in server mode.
// TODO(bep) clean up the running vs watching terms
if cfg.Running {
contentChangeTracker = &contentChangeMap{
pathSpec: h.PathSpec,
symContent: make(map[string]map[string]bool),
leafBundles: radix.New(),
branchBundles: make(map[string]bool),
}
h.ContentChanges = contentChangeTracker
}
return h, nil
}
func (h *HugoSites) loadGitInfo() error {
if h.Cfg.GetBool("enableGitInfo") {
gi, err := newGitInfo(h.Cfg)
if err != nil {
h.Log.ERROR.Println("Failed to read Git log:", err)
} else {
h.gitInfo = gi
}
}
return nil
}
func applyDeps(cfg deps.DepsCfg, sites ...*Site) error {
if cfg.TemplateProvider == nil {
cfg.TemplateProvider = tplimpl.DefaultTemplateProvider
}
if cfg.TranslationProvider == nil {
cfg.TranslationProvider = i18n.NewTranslationProvider()
}
var (
d *deps.Deps
err error
)
for _, s := range sites {
if s.Deps != nil {
continue
}
onCreated := func(d *deps.Deps) error {
s.Deps = d
// Set up the main publishing chain.
pub, err := publisher.NewDestinationPublisher(
d.ResourceSpec,
s.outputFormatsConfig,
s.mediaTypesConfig,
)
if err != nil {
return err
}
s.publisher = pub
if err := s.initializeSiteInfo(); err != nil {
return err
}
d.Site = s.Info
siteConfig, err := loadSiteConfig(s.language)
if err != nil {
return errors.Wrap(err, "load site config")
}
s.siteConfigConfig = siteConfig
pm := &pageMap{
contentMap: newContentMap(contentMapConfig{
lang: s.Lang(),
taxonomyConfig: s.siteCfg.taxonomiesConfig.Values(),
taxonomyDisabled: !s.isEnabled(page.KindTaxonomy),
taxonomyTermDisabled: !s.isEnabled(page.KindTaxonomyTerm),
pageDisabled: !s.isEnabled(page.KindPage),
}),
s: s,
}
s.PageCollections = newPageCollections(pm)
s.siteRefLinker, err = newSiteRefLinker(s.language, s)
return err
}
cfg.Language = s.language
cfg.MediaTypes = s.mediaTypesConfig
cfg.OutputFormats = s.outputFormatsConfig
if d == nil {
cfg.WithTemplate = s.withSiteTemplates(cfg.WithTemplate)
var err error
d, err = deps.New(cfg)
if err != nil {
return errors.Wrap(err, "create deps")
}
d.OutputFormatsConfig = s.outputFormatsConfig
if err := onCreated(d); err != nil {
return errors.Wrap(err, "on created")
}
if err = d.LoadResources(); err != nil {
return errors.Wrap(err, "load resources")
}
} else {
d, err = d.ForLanguage(cfg, onCreated)
if err != nil {
return err
}
d.OutputFormatsConfig = s.outputFormatsConfig
}
}
return nil
}
// NewHugoSites creates HugoSites from the given config.
func NewHugoSites(cfg deps.DepsCfg) (*HugoSites, error) {
sites, err := createSitesFromConfig(cfg)
if err != nil {
return nil, errors.Wrap(err, "from config")
}
return newHugoSites(cfg, sites...)
}
func (s *Site) withSiteTemplates(withTemplates ...func(templ tpl.TemplateManager) error) func(templ tpl.TemplateManager) error {
return func(templ tpl.TemplateManager) error {
for _, wt := range withTemplates {
if wt == nil {
continue
}
if err := wt(templ); err != nil {
return err
}
}
return nil
}
}
func createSitesFromConfig(cfg deps.DepsCfg) ([]*Site, error) {
var (
sites []*Site
)
languages := getLanguages(cfg.Cfg)
for _, lang := range languages {
if lang.Disabled {
continue
}
var s *Site
var err error
cfg.Language = lang
s, err = newSite(cfg)
if err != nil {
return nil, err
}
sites = append(sites, s)
}
return sites, nil
}
// Reset resets the sites and template caches etc., making it ready for a full rebuild.
func (h *HugoSites) reset(config *BuildCfg) {
if config.ResetState {
for i, s := range h.Sites {
h.Sites[i] = s.reset()
if r, ok := s.Fs.Destination.(hugofs.Reseter); ok {
r.Reset()
}
}
}
h.fatalErrorHandler = &fatalErrorHandler{
h: h,
donec: make(chan bool),
}
h.init.Reset()
}
// resetLogs resets the log counters etc. Used to do a new build on the same sites.
func (h *HugoSites) resetLogs() {
h.Log.Reset()
loggers.GlobalErrorCounter.Reset()
for _, s := range h.Sites {
s.Deps.DistinctErrorLog = helpers.NewDistinctLogger(h.Log.ERROR)
}
}
func (h *HugoSites) withSite(fn func(s *Site) error) error {
if h.workers == nil {
for _, s := range h.Sites {
if err := fn(s); err != nil {
return err
}
}
return nil
}
g, _ := h.workers.Start(context.Background())
for _, s := range h.Sites {
s := s
g.Run(func() error {
return fn(s)
})
}
return g.Wait()
}
func (h *HugoSites) createSitesFromConfig(cfg config.Provider) error {
oldLangs, _ := h.Cfg.Get("languagesSorted").(langs.Languages)
if err := loadLanguageSettings(h.Cfg, oldLangs); err != nil {
return err
}
depsCfg := deps.DepsCfg{Fs: h.Fs, Cfg: cfg}
sites, err := createSitesFromConfig(depsCfg)
if err != nil {
return err
}
langConfig, err := newMultiLingualFromSites(depsCfg.Cfg, sites...)
if err != nil {
return err
}
h.Sites = sites
for _, s := range sites {
s.h = h
}
if err := applyDeps(depsCfg, sites...); err != nil {
return err
}
h.Deps = sites[0].Deps
h.multilingual = langConfig
h.multihost = h.Deps.Cfg.GetBool("multihost")
return nil
}
func (h *HugoSites) toSiteInfos() []*SiteInfo {
infos := make([]*SiteInfo, len(h.Sites))
for i, s := range h.Sites {
infos[i] = s.Info
}
return infos
}
// BuildCfg holds build options used to, as an example, skip the render step.
type BuildCfg struct {
// Reset site state before build. Use to force full rebuilds.
ResetState bool
// If set, we re-create the sites from the given configuration before a build.
// This is needed if new languages are added.
NewConfig config.Provider
// Skip rendering. Useful for testing.
SkipRender bool
// Use this to indicate what changed (for rebuilds).
whatChanged *whatChanged
// This is a partial re-render of some selected pages. This means
// we should skip most of the processing.
PartialReRender bool
// Set in server mode when the last build failed for some reason.
ErrRecovery bool
// Recently visited URLs. This is used for partial re-rendering.
RecentlyVisited map[string]bool
testCounters *testCounters
}
// shouldRender is used in the Fast Render Mode to determine if we need to re-render
// a Page: If it is recently visited (the home pages will always be in this set) or changed.
// Note that a page does not have to have a content page / file.
// For regular builds, this will allways return true.
// TODO(bep) rename/work this.
func (cfg *BuildCfg) shouldRender(p *pageState) bool {
if p.forceRender {
return true
}
if len(cfg.RecentlyVisited) == 0 {
return true
}
if cfg.RecentlyVisited[p.RelPermalink()] {
return true
}
if cfg.whatChanged != nil && !p.File().IsZero() {
return cfg.whatChanged.files[p.File().Filename()]
}
return false
}
func (h *HugoSites) renderCrossSitesArtifacts() error {
if !h.multilingual.enabled() || h.IsMultihost() {
return nil
}
sitemapEnabled := false
for _, s := range h.Sites {
if s.isEnabled(kindSitemap) {
sitemapEnabled = true
break
}
}
if !sitemapEnabled {
return nil
}
s := h.Sites[0]
templ := s.lookupLayouts("sitemapindex.xml", "_default/sitemapindex.xml", "_internal/_default/sitemapindex.xml")
return s.renderAndWriteXML(&s.PathSpec.ProcessingStats.Sitemaps, "sitemapindex",
s.siteCfg.sitemap.Filename, h.toSiteInfos(), templ)
}
func (h *HugoSites) removePageByFilename(filename string) {
h.content.withMaps(func(m *pageMap) error {
m.deleteBundleMatching(func(b *contentNode) bool {
if b.p == nil {
return false
}
if b.fi == nil {
return false
}
return b.fi.Meta().Filename() == filename
})
return nil
})
}
func (h *HugoSites) createPageCollections() error {
allPages := newLazyPagesFactory(func() page.Pages {
var pages page.Pages
for _, s := range h.Sites {
pages = append(pages, s.Pages()...)
}
page.SortByDefault(pages)
return pages
})
allRegularPages := newLazyPagesFactory(func() page.Pages {
return h.findPagesByKindIn(page.KindPage, allPages.get())
})
for _, s := range h.Sites {
s.PageCollections.allPages = allPages
s.PageCollections.allRegularPages = allRegularPages
}
return nil
}
func (s *Site) preparePagesForRender(isRenderingSite bool, idx int) error {
var err error
s.pageMap.withEveryBundlePage(func(p *pageState) bool {
if err = p.initOutputFormat(isRenderingSite, idx); err != nil {
return true
}
return false
})
return nil
}
// Pages returns all pages for all sites.
func (h *HugoSites) Pages() page.Pages {
return h.Sites[0].AllPages()
}
func (h *HugoSites) loadData(fis []hugofs.FileMetaInfo) (err error) {
spec := source.NewSourceSpec(h.PathSpec, nil)
h.data = make(map[string]interface{})
for _, fi := range fis {
fileSystem := spec.NewFilesystemFromFileMetaInfo(fi)
files, err := fileSystem.Files()
if err != nil {
return err
}
for _, r := range files {
if err := h.handleDataFile(r); err != nil {
return err
}
}
}
return
}
func (h *HugoSites) handleDataFile(r source.File) error {
var current map[string]interface{}
f, err := r.FileInfo().Meta().Open()
if err != nil {
return errors.Wrapf(err, "data: failed to open %q:", r.LogicalName())
}
defer f.Close()
// Crawl in data tree to insert data
current = h.data
keyParts := strings.Split(r.Dir(), helpers.FilePathSeparator)
for _, key := range keyParts {
if key != "" {
if _, ok := current[key]; !ok {
current[key] = make(map[string]interface{})
}
current = current[key].(map[string]interface{})
}
}
data, err := h.readData(r)
if err != nil {
return h.errWithFileContext(err, r)
}
if data == nil {
return nil
}
// filepath.Walk walks the files in lexical order, '/' comes before '.'
higherPrecedentData := current[r.BaseFileName()]
switch data.(type) {
case nil:
case map[string]interface{}:
switch higherPrecedentData.(type) {
case nil:
current[r.BaseFileName()] = data
case map[string]interface{}:
// merge maps: insert entries from data for keys that
// don't already exist in higherPrecedentData
higherPrecedentMap := higherPrecedentData.(map[string]interface{})
for key, value := range data.(map[string]interface{}) {
if _, exists := higherPrecedentMap[key]; exists {
// this warning could happen if
// 1. A theme uses the same key; the main data folder wins
// 2. A sub folder uses the same key: the sub folder wins
// TODO(bep) figure out a way to detect 2) above and make that a WARN
h.Log.INFO.Printf("Data for key '%s' in path '%s' is overridden by higher precedence data already in the data tree", key, r.Path())
} else {
higherPrecedentMap[key] = value
}
}
default:
// can't merge: higherPrecedentData is not a map
h.Log.WARN.Printf("The %T data from '%s' overridden by "+
"higher precedence %T data already in the data tree", data, r.Path(), higherPrecedentData)
}
case []interface{}:
if higherPrecedentData == nil {
current[r.BaseFileName()] = data
} else {
// we don't merge array data
h.Log.WARN.Printf("The %T data from '%s' overridden by "+
"higher precedence %T data already in the data tree", data, r.Path(), higherPrecedentData)
}
default:
h.Log.ERROR.Printf("unexpected data type %T in file %s", data, r.LogicalName())
}
return nil
}
func (h *HugoSites) errWithFileContext(err error, f source.File) error {
fim, ok := f.FileInfo().(hugofs.FileMetaInfo)
if !ok {
return err
}
realFilename := fim.Meta().Filename()
err, _ = herrors.WithFileContextForFile(
err,
realFilename,
realFilename,
h.SourceSpec.Fs.Source,
herrors.SimpleLineMatcher)
return err
}
func (h *HugoSites) readData(f source.File) (interface{}, error) {
file, err := f.FileInfo().Meta().Open()
if err != nil {
return nil, errors.Wrap(err, "readData: failed to open data file")
}
defer file.Close()
content := helpers.ReaderToBytes(file)
format := metadecoders.FormatFromString(f.Extension())
return metadecoders.Default.Unmarshal(content, format)
}
func (h *HugoSites) findPagesByKindIn(kind string, inPages page.Pages) page.Pages {
return h.Sites[0].findPagesByKindIn(kind, inPages)
}
func (h *HugoSites) resetPageState() {
h.content.walkBundles(func(n *contentNode) bool {
if n.p == nil {
return false
}
p := n.p
for _, po := range p.pageOutputs {
if po.cp == nil {
continue
}
po.cp.Reset()
}
return false
})
}
func (h *HugoSites) resetPageStateFromEvents(idset identity.Identities) {
h.content.walkBundles(func(n *contentNode) bool {
if n.p == nil {
return false
}
p := n.p
OUTPUTS:
for _, po := range p.pageOutputs {
if po.cp == nil {
continue
}
for id := range idset {
if po.cp.dependencyTracker.Search(id) != nil {
po.cp.Reset()
continue OUTPUTS
}
}
}
if p.shortcodeState == nil {
return false
}
for _, s := range p.shortcodeState.shortcodes {
for id := range idset {
if idm, ok := s.info.(identity.Manager); ok && idm.Search(id) != nil {
for _, po := range p.pageOutputs {
if po.cp != nil {
po.cp.Reset()
}
}
return false
}
}
}
return false
})
}
// Used in partial reloading to determine if the change is in a bundle.
type contentChangeMap struct {
mu sync.RWMutex
// Holds directories with leaf bundles.
leafBundles *radix.Tree
// Holds directories with branch bundles.
branchBundles map[string]bool
pathSpec *helpers.PathSpec
// Hugo supports symlinked content (both directories and files). This
// can lead to situations where the same file can be referenced from several
// locations in /content -- which is really cool, but also means we have to
// go an extra mile to handle changes.
// This map is only used in watch mode.
// It maps either file to files or the real dir to a set of content directories
// where it is in use.
symContentMu sync.Mutex
symContent map[string]map[string]bool
}
func (m *contentChangeMap) add(dirname string, tp bundleDirType) {
m.mu.Lock()
if !strings.HasSuffix(dirname, helpers.FilePathSeparator) {
dirname += helpers.FilePathSeparator
}
switch tp {
case bundleBranch:
m.branchBundles[dirname] = true
case bundleLeaf:
m.leafBundles.Insert(dirname, true)
default:
m.mu.Unlock()
panic("invalid bundle type")
}
m.mu.Unlock()
}
func (m *contentChangeMap) resolveAndRemove(filename string) (string, bundleDirType) {
m.mu.RLock()
defer m.mu.RUnlock()
// Bundles share resources, so we need to start from the virtual root.
relFilename := m.pathSpec.RelContentDir(filename)
dir, name := filepath.Split(relFilename)
if !strings.HasSuffix(dir, helpers.FilePathSeparator) {
dir += helpers.FilePathSeparator
}
if _, found := m.branchBundles[dir]; found {
delete(m.branchBundles, dir)
return dir, bundleBranch
}
if key, _, found := m.leafBundles.LongestPrefix(dir); found {
m.leafBundles.Delete(key)
dir = string(key)
return dir, bundleLeaf
}
fileTp, isContent := classifyBundledFile(name)
if isContent && fileTp != bundleNot {
// A new bundle.
return dir, fileTp
}
return dir, bundleNot
}
func (m *contentChangeMap) addSymbolicLinkMapping(fim hugofs.FileMetaInfo) {
meta := fim.Meta()
if !meta.IsSymlink() {
return
}
m.symContentMu.Lock()
from, to := meta.Filename(), meta.OriginalFilename()
if fim.IsDir() {
if !strings.HasSuffix(from, helpers.FilePathSeparator) {
from += helpers.FilePathSeparator
}
}
mm, found := m.symContent[from]
if !found {
mm = make(map[string]bool)
m.symContent[from] = mm
}
mm[to] = true
m.symContentMu.Unlock()
}
func (m *contentChangeMap) GetSymbolicLinkMappings(dir string) []string {
mm, found := m.symContent[dir]
if !found {
return nil
}
dirs := make([]string, len(mm))
i := 0
for dir := range mm {
dirs[i] = dir
i++
}
sort.Strings(dirs)
return dirs
}