mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-21 20:46:30 -05:00
480 lines
9.7 KiB
Go
480 lines
9.7 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 hugolib
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"os"
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"path/filepath"
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"runtime/trace"
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"strings"
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"github.com/gohugoio/hugo/publisher"
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"github.com/gohugoio/hugo/hugofs"
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"github.com/gohugoio/hugo/common/para"
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"github.com/gohugoio/hugo/config"
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"github.com/gohugoio/hugo/resources/postpub"
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"github.com/spf13/afero"
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"github.com/gohugoio/hugo/resources/resource"
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"github.com/gohugoio/hugo/output"
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"github.com/pkg/errors"
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"github.com/fsnotify/fsnotify"
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"github.com/gohugoio/hugo/helpers"
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)
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// Build builds all sites. If filesystem events are provided,
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// this is considered to be a potential partial rebuild.
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func (h *HugoSites) Build(config BuildCfg, events ...fsnotify.Event) error {
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if h.running {
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// Make sure we don't trigger rebuilds in parallel.
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h.runningMu.Lock()
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defer h.runningMu.Unlock()
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}
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ctx, task := trace.NewTask(context.Background(), "Build")
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defer task.End()
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errCollector := h.StartErrorCollector()
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errs := make(chan error)
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go func(from, to chan error) {
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var errors []error
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i := 0
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for e := range from {
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i++
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if i > 50 {
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break
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}
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errors = append(errors, e)
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}
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to <- h.pickOneAndLogTheRest(errors)
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close(to)
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}(errCollector, errs)
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if h.Metrics != nil {
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h.Metrics.Reset()
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}
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h.testCounters = config.testCounters
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// Need a pointer as this may be modified.
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conf := &config
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if conf.whatChanged == nil {
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// Assume everything has changed
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conf.whatChanged = &whatChanged{source: true}
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}
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var prepareErr error
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if !config.PartialReRender {
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prepare := func() error {
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init := func(conf *BuildCfg) error {
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for _, s := range h.Sites {
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s.Deps.BuildStartListeners.Notify()
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}
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if len(events) > 0 {
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// Rebuild
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if err := h.initRebuild(conf); err != nil {
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return errors.Wrap(err, "initRebuild")
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}
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} else {
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if err := h.initSites(conf); err != nil {
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return errors.Wrap(err, "initSites")
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}
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}
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return nil
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}
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var err error
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f := func() {
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err = h.process(conf, init, events...)
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}
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trace.WithRegion(ctx, "process", f)
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if err != nil {
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return errors.Wrap(err, "process")
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}
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f = func() {
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err = h.assemble(conf)
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}
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trace.WithRegion(ctx, "assemble", f)
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if err != nil {
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return err
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}
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return nil
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}
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f := func() {
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prepareErr = prepare()
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}
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trace.WithRegion(ctx, "prepare", f)
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if prepareErr != nil {
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h.SendError(prepareErr)
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}
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}
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if prepareErr == nil {
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var err error
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f := func() {
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err = h.render(conf)
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}
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trace.WithRegion(ctx, "render", f)
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if err != nil {
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h.SendError(err)
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}
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if err = h.postProcess(); err != nil {
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h.SendError(err)
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}
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}
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if h.Metrics != nil {
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var b bytes.Buffer
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h.Metrics.WriteMetrics(&b)
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h.Log.FEEDBACK.Printf("\nTemplate Metrics:\n\n")
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h.Log.FEEDBACK.Print(b.String())
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h.Log.FEEDBACK.Println()
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}
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select {
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// Make sure the channel always gets something.
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case errCollector <- nil:
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default:
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}
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close(errCollector)
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err := <-errs
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if err != nil {
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return err
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}
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if err := h.fatalErrorHandler.getErr(); err != nil {
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return err
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}
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errorCount := h.Log.ErrorCounter.Count()
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if errorCount > 0 {
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return fmt.Errorf("logged %d error(s)", errorCount)
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}
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return nil
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}
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// Build lifecycle methods below.
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// The order listed matches the order of execution.
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func (h *HugoSites) initSites(config *BuildCfg) error {
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h.reset(config)
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if config.NewConfig != nil {
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if err := h.createSitesFromConfig(config.NewConfig); err != nil {
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return err
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}
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}
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return nil
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}
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func (h *HugoSites) initRebuild(config *BuildCfg) error {
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if config.NewConfig != nil {
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return errors.New("rebuild does not support 'NewConfig'")
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}
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if config.ResetState {
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return errors.New("rebuild does not support 'ResetState'")
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}
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if !h.running {
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return errors.New("rebuild called when not in watch mode")
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}
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for _, s := range h.Sites {
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s.resetBuildState(config.whatChanged.source)
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}
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h.reset(config)
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h.resetLogs()
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helpers.InitLoggers()
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return nil
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}
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func (h *HugoSites) process(config *BuildCfg, init func(config *BuildCfg) error, events ...fsnotify.Event) error {
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// We should probably refactor the Site and pull up most of the logic from there to here,
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// but that seems like a daunting task.
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// So for now, if there are more than one site (language),
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// we pre-process the first one, then configure all the sites based on that.
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firstSite := h.Sites[0]
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if len(events) > 0 {
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// This is a rebuild
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return firstSite.processPartial(config, init, events)
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}
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return firstSite.process(*config)
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}
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func (h *HugoSites) assemble(bcfg *BuildCfg) error {
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if len(h.Sites) > 1 {
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// The first is initialized during process; initialize the rest
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for _, site := range h.Sites[1:] {
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if err := site.initializeSiteInfo(); err != nil {
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return err
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}
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}
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}
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if !bcfg.whatChanged.source {
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return nil
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}
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if err := h.getContentMaps().AssemblePages(); err != nil {
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return err
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}
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if err := h.createPageCollections(); err != nil {
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return err
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}
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return nil
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}
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func (h *HugoSites) render(config *BuildCfg) error {
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if _, err := h.init.layouts.Do(); err != nil {
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return err
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}
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siteRenderContext := &siteRenderContext{cfg: config, multihost: h.multihost}
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if !config.PartialReRender {
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h.renderFormats = output.Formats{}
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h.withSite(func(s *Site) error {
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s.initRenderFormats()
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return nil
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})
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for _, s := range h.Sites {
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h.renderFormats = append(h.renderFormats, s.renderFormats...)
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}
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}
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i := 0
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for _, s := range h.Sites {
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for siteOutIdx, renderFormat := range s.renderFormats {
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siteRenderContext.outIdx = siteOutIdx
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siteRenderContext.sitesOutIdx = i
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i++
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select {
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case <-h.Done():
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return nil
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default:
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for _, s2 := range h.Sites {
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// We render site by site, but since the content is lazily rendered
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// and a site can "borrow" content from other sites, every site
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// needs this set.
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s2.rc = &siteRenderingContext{Format: renderFormat}
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if err := s2.preparePagesForRender(s == s2, siteRenderContext.sitesOutIdx); err != nil {
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return err
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}
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}
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if !config.SkipRender {
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if config.PartialReRender {
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if err := s.renderPages(siteRenderContext); err != nil {
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return err
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}
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} else {
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if err := s.render(siteRenderContext); err != nil {
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return err
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}
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}
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}
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}
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}
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}
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if !config.SkipRender {
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if err := h.renderCrossSitesArtifacts(); err != nil {
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return err
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}
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}
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return nil
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}
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func (h *HugoSites) postProcess() error {
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// Make sure to write any build stats to disk first so it's available
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// to the post processors.
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if err := h.writeBuildStats(); err != nil {
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return err
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}
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var toPostProcess []resource.OriginProvider
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for _, s := range h.Sites {
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for _, v := range s.ResourceSpec.PostProcessResources {
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toPostProcess = append(toPostProcess, v)
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}
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}
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if len(toPostProcess) == 0 {
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return nil
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}
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workers := para.New(config.GetNumWorkerMultiplier())
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g, _ := workers.Start(context.Background())
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handleFile := func(filename string) error {
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content, err := afero.ReadFile(h.BaseFs.PublishFs, filename)
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if err != nil {
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return err
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}
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k := 0
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changed := false
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for {
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l := bytes.Index(content[k:], []byte(postpub.PostProcessPrefix))
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if l == -1 {
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break
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}
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m := bytes.Index(content[k+l:], []byte(postpub.PostProcessSuffix)) + len(postpub.PostProcessSuffix)
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low, high := k+l, k+l+m
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field := content[low:high]
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forward := l + m
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for i, r := range toPostProcess {
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if r == nil {
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panic(fmt.Sprintf("resource %d to post process is nil", i+1))
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}
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v, ok := r.GetFieldString(string(field))
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if ok {
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content = append(content[:low], append([]byte(v), content[high:]...)...)
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changed = true
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forward = len(v)
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break
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}
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}
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k += forward
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}
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if changed {
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return afero.WriteFile(h.BaseFs.PublishFs, filename, content, 0666)
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}
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return nil
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}
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_ = afero.Walk(h.BaseFs.PublishFs, "", func(path string, info os.FileInfo, err error) error {
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if info == nil || info.IsDir() {
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return nil
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}
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if !strings.HasSuffix(path, "html") {
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return nil
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}
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g.Run(func() error {
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return handleFile(path)
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})
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return nil
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})
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// Prepare for a new build.
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for _, s := range h.Sites {
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s.ResourceSpec.PostProcessResources = make(map[string]postpub.PostPublishedResource)
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}
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return g.Wait()
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}
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type publishStats struct {
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CSSClasses string `json:"cssClasses"`
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}
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func (h *HugoSites) writeBuildStats() error {
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if !h.ResourceSpec.BuildConfig.WriteStats {
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return nil
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}
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htmlElements := &publisher.HTMLElements{}
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for _, s := range h.Sites {
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stats := s.publisher.PublishStats()
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htmlElements.Merge(stats.HTMLElements)
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}
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htmlElements.Sort()
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stats := publisher.PublishStats{
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HTMLElements: *htmlElements,
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}
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js, err := json.MarshalIndent(stats, "", " ")
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if err != nil {
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return err
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}
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filename := filepath.Join(h.WorkingDir, "hugo_stats.json")
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// Make sure it's always written to the OS fs.
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if err := afero.WriteFile(hugofs.Os, filename, js, 0666); err != nil {
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return err
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}
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// Write to the destination, too, if a mem fs is in play.
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if h.Fs.Source != hugofs.Os {
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if err := afero.WriteFile(h.Fs.Destination, filename, js, 0666); err != nil {
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return err
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}
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}
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return nil
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}
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