hugo/hugolib/hugo_sites_build.go
2023-06-18 13:03:04 +02:00

489 lines
11 KiB
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 (
"bytes"
"context"
"encoding/json"
"fmt"
"path/filepath"
"strings"
"time"
"github.com/bep/logg"
"github.com/gohugoio/hugo/langs"
"github.com/gohugoio/hugo/publisher"
"github.com/gohugoio/hugo/hugofs"
"github.com/gohugoio/hugo/common/para"
"github.com/gohugoio/hugo/config"
"github.com/gohugoio/hugo/resources/postpub"
"github.com/spf13/afero"
"github.com/gohugoio/hugo/output"
"errors"
"github.com/fsnotify/fsnotify"
"github.com/gohugoio/hugo/helpers"
)
func init() {
// To avoid circular dependencies, we set this here.
langs.DeprecationFunc = helpers.Deprecated
}
// Build builds all sites. If filesystem events are provided,
// this is considered to be a potential partial rebuild.
func (h *HugoSites) Build(config BuildCfg, events ...fsnotify.Event) error {
if h == nil {
return errors.New("cannot build nil *HugoSites")
}
if h.Deps == nil {
return errors.New("cannot build nil *Deps")
}
if !config.NoBuildLock {
unlock, err := h.BaseFs.LockBuild()
if err != nil {
return fmt.Errorf("failed to acquire a build lock: %w", err)
}
defer unlock()
}
infol := h.Log.InfoCommand("build")
errCollector := h.StartErrorCollector()
errs := make(chan error)
go func(from, to chan error) {
var errors []error
i := 0
for e := range from {
i++
if i > 50 {
break
}
errors = append(errors, e)
}
to <- h.pickOneAndLogTheRest(errors)
close(to)
}(errCollector, errs)
if h.Metrics != nil {
h.Metrics.Reset()
}
h.testCounters = config.testCounters
// Need a pointer as this may be modified.
conf := &config
if conf.whatChanged == nil {
// Assume everything has changed
conf.whatChanged = &whatChanged{source: true}
}
var prepareErr error
if !config.PartialReRender {
prepare := func() error {
init := func(conf *BuildCfg) error {
for _, s := range h.Sites {
s.Deps.BuildStartListeners.Notify()
}
if len(events) > 0 {
// Rebuild
if err := h.initRebuild(conf); err != nil {
return fmt.Errorf("initRebuild: %w", err)
}
} else {
if err := h.initSites(conf); err != nil {
return fmt.Errorf("initSites: %w", err)
}
}
return nil
}
if err := h.process(infol, conf, init, events...); err != nil {
return fmt.Errorf("process: %w", err)
}
if err := h.assemble(infol, conf); err != nil {
return fmt.Errorf("assemble: %w", err)
}
return nil
}
if prepareErr = prepare(); prepareErr != nil {
h.SendError(prepareErr)
}
}
if prepareErr == nil {
if err := h.render(infol, conf); err != nil {
h.SendError(fmt.Errorf("render: %w", err))
}
if err := h.postProcess(infol); err != nil {
h.SendError(fmt.Errorf("postProcess: %w", err))
}
}
if h.Metrics != nil {
var b bytes.Buffer
h.Metrics.WriteMetrics(&b)
h.Log.Printf("\nTemplate Metrics:\n\n")
h.Log.Println(b.String())
}
h.StopErrorCollector()
err := <-errs
if err != nil {
return err
}
if err := h.fatalErrorHandler.getErr(); err != nil {
return err
}
errorCount := h.Log.LoggCount(logg.LevelError)
if errorCount > 0 {
return fmt.Errorf("logged %d error(s)", errorCount)
}
return nil
}
// Build lifecycle methods below.
// The order listed matches the order of execution.
func (h *HugoSites) initSites(config *BuildCfg) error {
h.reset(config)
return nil
}
func (h *HugoSites) initRebuild(config *BuildCfg) error {
if config.ResetState {
return errors.New("rebuild does not support 'ResetState'")
}
if !h.Configs.Base.Internal.Watch {
return errors.New("rebuild called when not in watch mode")
}
for _, s := range h.Sites {
s.resetBuildState(config.whatChanged.source)
}
h.reset(config)
h.resetLogs()
return nil
}
func (h *HugoSites) process(l logg.LevelLogger, config *BuildCfg, init func(config *BuildCfg) error, events ...fsnotify.Event) error {
defer h.timeTrack(l, time.Now(), "process")
// We should probably refactor the Site and pull up most of the logic from there to here,
// but that seems like a daunting task.
// So for now, if there are more than one site (language),
// we pre-process the first one, then configure all the sites based on that.
firstSite := h.Sites[0]
if len(events) > 0 {
// This is a rebuild
return firstSite.processPartial(config, init, events)
}
return firstSite.process(*config)
}
func (h *HugoSites) assemble(l logg.LevelLogger, bcfg *BuildCfg) error {
defer h.timeTrack(l, time.Now(), "assemble")
if !bcfg.whatChanged.source {
return nil
}
if err := h.getContentMaps().AssemblePages(); err != nil {
return err
}
if err := h.createPageCollections(); err != nil {
return err
}
return nil
}
func (h *HugoSites) timeTrack(l logg.LevelLogger, start time.Time, name string) {
elapsed := time.Since(start)
l.WithField("step", name).WithField("duration", elapsed).Logf("running")
}
func (h *HugoSites) render(l logg.LevelLogger, config *BuildCfg) error {
defer h.timeTrack(l, time.Now(), "render")
if _, err := h.init.layouts.Do(context.Background()); err != nil {
return err
}
siteRenderContext := &siteRenderContext{cfg: config, multihost: h.Configs.IsMultihost}
if !config.PartialReRender {
h.renderFormats = output.Formats{}
h.withSite(func(s *Site) error {
s.initRenderFormats()
return nil
})
for _, s := range h.Sites {
h.renderFormats = append(h.renderFormats, s.renderFormats...)
}
}
i := 0
for _, s := range h.Sites {
h.currentSite = s
for siteOutIdx, renderFormat := range s.renderFormats {
siteRenderContext.outIdx = siteOutIdx
siteRenderContext.sitesOutIdx = i
i++
select {
case <-h.Done():
return nil
default:
for _, s2 := range h.Sites {
// We render site by site, but since the content is lazily rendered
// and a site can "borrow" content from other sites, every site
// needs this set.
s2.rc = &siteRenderingContext{Format: renderFormat}
if err := s2.preparePagesForRender(s == s2, siteRenderContext.sitesOutIdx); err != nil {
return err
}
}
if !config.SkipRender {
if config.PartialReRender {
if err := s.renderPages(siteRenderContext); err != nil {
return err
}
} else {
if err := s.render(siteRenderContext); err != nil {
return err
}
}
}
}
}
}
if !config.SkipRender {
if err := h.renderCrossSitesSitemap(); err != nil {
return err
}
if err := h.renderCrossSitesRobotsTXT(); err != nil {
return err
}
}
return nil
}
func (h *HugoSites) postProcess(l logg.LevelLogger) error {
defer h.timeTrack(l, time.Now(), "postProcess")
// Make sure to write any build stats to disk first so it's available
// to the post processors.
if err := h.writeBuildStats(); err != nil {
return err
}
// This will only be set when js.Build have been triggered with
// imports that resolves to the project or a module.
// Write a jsconfig.json file to the project's /asset directory
// to help JS intellisense in VS Code etc.
if !h.ResourceSpec.BuildConfig().NoJSConfigInAssets && h.BaseFs.Assets.Dirs != nil {
fi, err := h.BaseFs.Assets.Fs.Stat("")
if err != nil {
h.Log.Warnf("Failed to resolve jsconfig.json dir: %s", err)
} else {
m := fi.(hugofs.FileMetaInfo).Meta()
assetsDir := m.SourceRoot
if strings.HasPrefix(assetsDir, h.Configs.LoadingInfo.BaseConfig.WorkingDir) {
if jsConfig := h.ResourceSpec.JSConfigBuilder.Build(assetsDir); jsConfig != nil {
b, err := json.MarshalIndent(jsConfig, "", " ")
if err != nil {
h.Log.Warnf("Failed to create jsconfig.json: %s", err)
} else {
filename := filepath.Join(assetsDir, "jsconfig.json")
if h.Configs.Base.Internal.Running {
h.skipRebuildForFilenamesMu.Lock()
h.skipRebuildForFilenames[filename] = true
h.skipRebuildForFilenamesMu.Unlock()
}
// Make sure it's written to the OS fs as this is used by
// editors.
if err := afero.WriteFile(hugofs.Os, filename, b, 0666); err != nil {
h.Log.Warnf("Failed to write jsconfig.json: %s", err)
}
}
}
}
}
}
var toPostProcess []postpub.PostPublishedResource
for _, r := range h.ResourceSpec.PostProcessResources {
toPostProcess = append(toPostProcess, r)
}
if len(toPostProcess) == 0 {
// Nothing more to do.
return nil
}
workers := para.New(config.GetNumWorkerMultiplier())
g, _ := workers.Start(context.Background())
handleFile := func(filename string) error {
content, err := afero.ReadFile(h.BaseFs.PublishFs, filename)
if err != nil {
return err
}
k := 0
changed := false
for {
l := bytes.Index(content[k:], []byte(postpub.PostProcessPrefix))
if l == -1 {
break
}
m := bytes.Index(content[k+l:], []byte(postpub.PostProcessSuffix)) + len(postpub.PostProcessSuffix)
low, high := k+l, k+l+m
field := content[low:high]
forward := l + m
for i, r := range toPostProcess {
if r == nil {
panic(fmt.Sprintf("resource %d to post process is nil", i+1))
}
v, ok := r.GetFieldString(string(field))
if ok {
content = append(content[:low], append([]byte(v), content[high:]...)...)
changed = true
forward = len(v)
break
}
}
k += forward
}
if changed {
return afero.WriteFile(h.BaseFs.PublishFs, filename, content, 0666)
}
return nil
}
filenames := h.Deps.BuildState.GetFilenamesWithPostPrefix()
for _, filename := range filenames {
filename := filename
g.Run(func() error {
return handleFile(filename)
})
}
// Prepare for a new build.
for _, s := range h.Sites {
s.ResourceSpec.PostProcessResources = make(map[string]postpub.PostPublishedResource)
}
return g.Wait()
}
type publishStats struct {
CSSClasses string `json:"cssClasses"`
}
func (h *HugoSites) writeBuildStats() error {
if h.ResourceSpec == nil {
panic("h.ResourceSpec is nil")
}
if !h.ResourceSpec.BuildConfig().WriteStats {
return nil
}
htmlElements := &publisher.HTMLElements{}
for _, s := range h.Sites {
stats := s.publisher.PublishStats()
htmlElements.Merge(stats.HTMLElements)
}
htmlElements.Sort()
stats := publisher.PublishStats{
HTMLElements: *htmlElements,
}
const hugoStatsName = "hugo_stats.json"
js, err := json.MarshalIndent(stats, "", " ")
if err != nil {
return err
}
filename := filepath.Join(h.Configs.LoadingInfo.BaseConfig.WorkingDir, hugoStatsName)
if existingContent, err := afero.ReadFile(hugofs.Os, filename); err == nil {
// Check if the content has changed.
if bytes.Equal(existingContent, js) {
return nil
}
}
// Make sure it's always written to the OS fs.
if err := afero.WriteFile(hugofs.Os, filename, js, 0666); err != nil {
return err
}
// Write to the destination as well if it's a in-memory fs.
if !hugofs.IsOsFs(h.Fs.Source) {
if err := afero.WriteFile(h.Fs.WorkingDirWritable, filename, js, 0666); err != nil {
return err
}
}
return nil
}