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// Copyright 2018 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 commands
import (
"bytes"
"errors"
"github.com/gohugoio/hugo/common/herrors"
"io/ioutil"
jww "github.com/spf13/jwalterweatherman"
"os"
"path/filepath"
"regexp"
"strings"
"sync"
"time"
"github.com/gohugoio/hugo/common/loggers"
"github.com/gohugoio/hugo/config"
"github.com/spf13/cobra"
"github.com/gohugoio/hugo/hugolib"
"github.com/spf13/afero"
"github.com/bep/debounce"
"github.com/gohugoio/hugo/common/types"
"github.com/gohugoio/hugo/deps"
"github.com/gohugoio/hugo/helpers"
"github.com/gohugoio/hugo/hugofs"
"github.com/gohugoio/hugo/langs"
)
type commandeerHugoState struct {
*deps.DepsCfg
hugo *hugolib.HugoSites
fsCreate sync.Once
}
type commandeer struct {
*commandeerHugoState
logger *loggers.Logger
// Currently only set when in "fast render mode". But it seems to
// be fast enough that we could maybe just add it for all server modes.
changeDetector *fileChangeDetector
// We need to reuse this on server rebuilds.
destinationFs afero.Fs
h *hugoBuilderCommon
ftch flagsToConfigHandler
visitedURLs *types.EvictingStringQueue
doWithCommandeer func(c *commandeer) error
// We watch these for changes.
configFiles []string
// Used in cases where we get flooded with events in server mode.
debounce func(f func())
serverPorts []int
languagesConfigured bool
languages langs.Languages
doLiveReload bool
fastRenderMode bool
showErrorInBrowser bool
configured bool
paused bool
// Any error from the last build.
buildErr error
}
func (c *commandeer) errCount() int {
return int(c.logger.ErrorCounter.Count())
}
func (c *commandeer) getErrorWithContext() interface{} {
errCount := c.errCount()
if errCount == 0 {
return nil
}
m := make(map[string]interface{})
m["Error"] = errors.New(removeErrorPrefixFromLog(c.logger.Errors.String()))
m["Version"] = hugoVersionString()
fe := herrors.UnwrapErrorWithFileContext(c.buildErr)
if fe != nil {
m["File"] = fe
}
if c.h.verbose {
var b bytes.Buffer
herrors.FprintStackTrace(&b, c.buildErr)
m["StackTrace"] = b.String()
}
return m
}
func (c *commandeer) Set(key string, value interface{}) {
if c.configured {
panic("commandeer cannot be changed")
}
c.Cfg.Set(key, value)
}
func (c *commandeer) initFs(fs *hugofs.Fs) error {
c.destinationFs = fs.Destination
c.DepsCfg.Fs = fs
return nil
}
func newCommandeer(mustHaveConfigFile, running bool, h *hugoBuilderCommon, f flagsToConfigHandler, doWithCommandeer func(c *commandeer) error, subCmdVs ...*cobra.Command) (*commandeer, error) {
var rebuildDebouncer func(f func())
if running {
// The time value used is tested with mass content replacements in a fairly big Hugo site.
// It is better to wait for some seconds in those cases rather than get flooded
// with rebuilds.
rebuildDebouncer, _, _ = debounce.New(4 * time.Second)
}
c := &commandeer{
h: h,
ftch: f,
commandeerHugoState: &commandeerHugoState{},
doWithCommandeer: doWithCommandeer,
visitedURLs: types.NewEvictingStringQueue(10),
debounce: rebuildDebouncer,
// This will be replaced later, but we need something to log to before the configuration is read.
logger: loggers.NewLogger(jww.LevelError, jww.LevelError, os.Stdout, ioutil.Discard, running),
}
return c, c.loadConfig(mustHaveConfigFile, running)
}
type fileChangeDetector struct {
sync.Mutex
current map[string]string
prev map[string]string
irrelevantRe *regexp.Regexp
}
func (f *fileChangeDetector) OnFileClose(name, md5sum string) {
f.Lock()
defer f.Unlock()
f.current[name] = md5sum
}
func (f *fileChangeDetector) changed() []string {
if f == nil {
return nil
}
f.Lock()
defer f.Unlock()
var c []string
for k, v := range f.current {
vv, found := f.prev[k]
if !found || v != vv {
c = append(c, k)
}
}
return f.filterIrrelevant(c)
}
func (f *fileChangeDetector) filterIrrelevant(in []string) []string {
var filtered []string
for _, v := range in {
if !f.irrelevantRe.MatchString(v) {
filtered = append(filtered, v)
}
}
return filtered
}
func (f *fileChangeDetector) PrepareNew() {
if f == nil {
return
}
f.Lock()
defer f.Unlock()
if f.current == nil {
f.current = make(map[string]string)
f.prev = make(map[string]string)
return
}
f.prev = make(map[string]string)
for k, v := range f.current {
f.prev[k] = v
}
f.current = make(map[string]string)
}
func (c *commandeer) loadConfig(mustHaveConfigFile, running bool) error {
if c.DepsCfg == nil {
c.DepsCfg = &deps.DepsCfg{}
}
cfg := c.DepsCfg
c.configured = false
cfg.Runni
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