ref: 02eaddc2fbe92c26e67d9f82dd9aabecbbf2106c
dir: /hugolib/hugo_sites_build.go/
// Copyright 2016-present 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"
"fmt"
"errors"
"github.com/fsnotify/fsnotify"
"github.com/gohugoio/hugo/helpers"
)
// 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 {
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()
}
// Need a pointer as this may be modified.
conf := &config
if conf.whatChanged == nil {
// Assume everything has changed
conf.whatChanged = &whatChanged{source: true, other: true}
}
var prepareErr error
if !config.PartialReRender {
prepare := func() error {
for _, s := range h.Sites {
s.Deps.BuildStartListeners.Notify()
}
if len(events) > 0 {
// Rebuild
if err := h.initRebuild(conf); err != nil {
return err
}
} else {
if err := h.init(conf); err != nil {
return err
}
}
if err := h.process(conf, events...); err != nil {
return err
}
if err := h.assemble(conf); err != nil {
return err
}
return nil
}
prepareErr = prepare()
if prepareErr != nil {
h.SendError(prepareErr)
}
}
if prepareErr == nil {
if err := h.render(conf); err != nil {
h.SendError(err)
}
}
if h.Metrics != nil {
var b bytes.Buffer
h.Metrics.WriteMetrics(&b)
h.Log.FEEDBACK.Printf("\nTemplate Metrics:\n\n")
h.Log.FEEDBACK.Print(b.String())
h.Log.FEEDBACK.Println()
}
select {
// Make sure the channel always gets something.
case errCollector <- nil:
default:
}
close(errCollector)
err := <-errs
if err != nil {
return err
}
errorCount := h.Log.ErrorCounter.Count()
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) init(config *BuildCfg) error {
for _, s := range h.Sites {
if s.PageCollections == nil {
s.PageCollections = newPageCollections()
}
}
if config.ResetState {
h.reset()
}
if config.NewConfig != nil {
if err := h.createSitesFromConfig(config.NewConfig); err != nil {
return err
}
}
return nil
}
func (h *HugoSites) initRebuild(config *BuildCfg) error {
if config.NewConfig != nil {
return errors.New("Rebuild does not support 'NewConfig'.")
}
if config.ResetState {
return errors.New("Rebuild does not support 'ResetState'.")
}
if !h.running {
return errors.New("Rebuild called when not in watch mode")
}
if config.whatChanged.source {
// This is for the non-renderable content pages (rarely used, I guess).
// We could maybe detect if this is really needed, but it should be
// pretty fast.
h.TemplateHandler().RebuildClone()
}
for _, s := range h.Sites {
s.resetBuildState()
}
h.resetLogs()
helpers.InitLoggers()
return nil
}
func (h *HugoSites) process(config *BuildCfg, events ...fsnotify.Event) error {
// 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
changed, err := firstSite.processPartial(events)
config.whatChanged = &changed
return err
}
return firstSite.process(*config)
}
func (h *HugoSites) assemble(config *BuildCfg) error {
if config.whatChanged.source {
for _, s := range h.Sites {
s.createTaxonomiesEntries()
}
}
// TODO(bep) we could probably wait and do this in one go later
h.setupTranslations()
if len(h.Sites) > 1 {
// The first is initialized during process; initialize the rest
for _, site := range h.Sites[1:] {
if err := site.initializeSiteInfo(); err != nil {
return err
}
}
}
if config.whatChanged.source {
for _, s := range h.Sites {
if err := s.buildSiteMeta(); err != nil {
return err
}
}
}
if err := h.createMissingPages(); err != nil {
return err
}
for _, s := range h.Sites {
for _, pages := range []Pages{s.Pages, s.headlessPages} {
for _, p := range pages {
// May have been set in front matter
if len(p.outputFormats) == 0 {
p.outputFormats = s.outputFormats[p.Kind]
}
if p.headless {
// headless = 1 output format only
p.outputFormats = p.outputFormats[:1]
}
for _, r := range p.Resources.ByType(pageResourceType) {
r.(*Page).outputFormats = p.outputFormats
}
if err := p.initPaths(); err != nil {
return err
}
}
}
s.assembleMenus()
s.refreshPageCaches()
s.setupSitePages()
}
if err := h.assignMissingTranslations(); err != nil {
return err
}
return nil
}
func (h *HugoSites) render(config *BuildCfg) error {
if !config.PartialReRender {
for _, s := range h.Sites {
s.initRenderFormats()
}
}
for _, s := range h.Sites {
for i, rf := range s.renderFormats {
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: rf}
isRenderingSite := s == s2
if !config.PartialReRender {
if err := s2.preparePagesForRender(isRenderingSite && i == 0); err != nil {
return err
}
}
}
if !config.SkipRender {
if config.PartialReRender {
if err := s.renderPages(config); err != nil {
return err
}
} else {
if err := s.render(config, i); err != nil {
return err
}
}
}
}
}
if !config.SkipRender {
if err := h.renderCrossSitesArtifacts(); err != nil {
return err
}
}
return nil
}