hugo/commands/mod.go
Bjørn Erik Pedersen 7285e74090
all: Rework page store, add a dynacache, improve partial rebuilds, and some general spring cleaning
There are some breaking changes in this commit, see #11455.

Closes #11455
Closes #11549

This fixes a set of bugs (see issue list) and it is also paying some technical debt accumulated over the years. We now build with Staticcheck enabled in the CI build.

The performance should be about the same as before for regular sized Hugo sites, but it should perform and scale much better to larger data sets, as objects that uses lots of memory (e.g. rendered Markdown, big JSON files read into maps with transform.Unmarshal etc.) will now get automatically garbage collected if needed. Performance on partial rebuilds when running the server in fast render mode should be the same, but the change detection should be much more accurate.

A list of the notable new features:

* A new dependency tracker that covers (almost) all of Hugo's API and is used to do fine grained partial rebuilds when running the server.
* A new and simpler tree document store which allows fast lookups and prefix-walking in all dimensions (e.g. language) concurrently.
* You can now configure an upper memory limit allowing for much larger data sets and/or running on lower specced PCs.
We have lifted the "no resources in sub folders" restriction for branch bundles (e.g. sections).
Memory Limit
* Hugos will, by default, set aside a quarter of the total system memory, but you can set this via the OS environment variable HUGO_MEMORYLIMIT (in gigabytes). This is backed by a partitioned LRU cache used throughout Hugo. A cache that gets dynamically resized in low memory situations, allowing Go's Garbage Collector to free the memory.

New Dependency Tracker: Hugo has had a rule based coarse grained approach to server rebuilds that has worked mostly pretty well, but there have been some surprises (e.g. stale content). This is now revamped with a new dependency tracker that can quickly calculate the delta given a changed resource (e.g. a content file, template, JS file etc.). This handles transitive relations, e.g. $page -> js.Build -> JS import, or $page1.Content -> render hook -> site.GetPage -> $page2.Title, or $page1.Content -> shortcode -> partial -> site.RegularPages -> $page2.Content -> shortcode ..., and should also handle changes to aggregated values (e.g. site.Lastmod) effectively.

This covers all of Hugo's API with 2 known exceptions (a list that may not be fully exhaustive):

Changes to files loaded with template func os.ReadFile may not be handled correctly. We recommend loading resources with resources.Get
Changes to Hugo objects (e.g. Page) passed in the template context to lang.Translate may not be detected correctly. We recommend having simple i18n templates without too much data context passed in other than simple types such as strings and numbers.
Note that the cachebuster configuration (when A changes then rebuild B) works well with the above, but we recommend that you revise that configuration, as it in most situations should not be needed. One example where it is still needed is with TailwindCSS and using changes to hugo_stats.json to trigger new CSS rebuilds.

Document Store: Previously, a little simplified, we split the document store (where we store pages and resources) in a tree per language. This worked pretty well, but the structure made some operations harder than they needed to be. We have now restructured it into one Radix tree for all languages. Internally the language is considered to be a dimension of that tree, and the tree can be viewed in all dimensions concurrently. This makes some operations re. language simpler (e.g. finding translations is just a slice range), but the idea is that it should also be relatively inexpensive to add more dimensions if needed (e.g. role).

Fixes #10169
Fixes #10364
Fixes #10482
Fixes #10630
Fixes #10656
Fixes #10694
Fixes #10918
Fixes #11262
Fixes #11439
Fixes #11453
Fixes #11457
Fixes #11466
Fixes #11540
Fixes #11551
Fixes #11556
Fixes #11654
Fixes #11661
Fixes #11663
Fixes #11664
Fixes #11669
Fixes #11671
Fixes #11807
Fixes #11808
Fixes #11809
Fixes #11815
Fixes #11840
Fixes #11853
Fixes #11860
Fixes #11883
Fixes #11904
Fixes #7388
Fixes #7425
Fixes #7436
Fixes #7544
Fixes #7882
Fixes #7960
Fixes #8255
Fixes #8307
Fixes #8863
Fixes #8927
Fixes #9192
Fixes #9324
2024-01-27 16:28:14 +01:00

330 lines
10 KiB
Go

// Copyright 2024 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 (
"context"
"errors"
"os"
"path/filepath"
"github.com/bep/simplecobra"
"github.com/gohugoio/hugo/config"
"github.com/gohugoio/hugo/modules/npm"
"github.com/spf13/cobra"
)
const commonUsageMod = `
Note that Hugo will always start out by resolving the components defined in the site
configuration, provided by a _vendor directory (if no --ignoreVendorPaths flag provided),
Go Modules, or a folder inside the themes directory, in that order.
See https://gohugo.io/hugo-modules/ for more information.
`
// buildConfigCommands creates a new config command and its subcommands.
func newModCommands() *modCommands {
var (
clean bool
pattern string
all bool
)
npmCommand := &simpleCommand{
name: "npm",
short: "Various npm helpers.",
long: `Various npm (Node package manager) helpers.`,
commands: []simplecobra.Commander{
&simpleCommand{
name: "pack",
short: "Experimental: Prepares and writes a composite package.json file for your project.",
long: `Prepares and writes a composite package.json file for your project.
On first run it creates a "package.hugo.json" in the project root if not already there. This file will be used as a template file
with the base dependency set.
This set will be merged with all "package.hugo.json" files found in the dependency tree, picking the version closest to the project.
This command is marked as 'Experimental'. We think it's a great idea, so it's not likely to be
removed from Hugo, but we need to test this out in "real life" to get a feel of it,
so this may/will change in future versions of Hugo.
`,
withc: func(cmd *cobra.Command, r *rootCommand) {
applyLocalFlagsBuildConfig(cmd, r)
},
run: func(ctx context.Context, cd *simplecobra.Commandeer, r *rootCommand, args []string) error {
h, err := r.Hugo(flagsToCfg(cd, nil))
if err != nil {
return err
}
return npm.Pack(h.BaseFs.ProjectSourceFs, h.BaseFs.AssetsWithDuplicatesPreserved.Fs)
},
},
},
}
return &modCommands{
commands: []simplecobra.Commander{
&simpleCommand{
name: "init",
short: "Initialize this project as a Hugo Module.",
long: `Initialize this project as a Hugo Module.
It will try to guess the module path, but you may help by passing it as an argument, e.g:
hugo mod init github.com/gohugoio/testshortcodes
Note that Hugo Modules supports multi-module projects, so you can initialize a Hugo Module
inside a subfolder on GitHub, as one example.
`,
withc: func(cmd *cobra.Command, r *rootCommand) {
applyLocalFlagsBuildConfig(cmd, r)
},
run: func(ctx context.Context, cd *simplecobra.Commandeer, r *rootCommand, args []string) error {
h, err := r.Hugo(flagsToCfg(cd, nil))
if err != nil {
return err
}
var initPath string
if len(args) >= 1 {
initPath = args[0]
}
return h.Configs.ModulesClient.Init(initPath)
},
},
&simpleCommand{
name: "verify",
short: "Verify dependencies.",
long: `Verify checks that the dependencies of the current module, which are stored in a local downloaded source cache, have not been modified since being downloaded.`,
withc: func(cmd *cobra.Command, r *rootCommand) {
applyLocalFlagsBuildConfig(cmd, r)
cmd.Flags().BoolVarP(&clean, "clean", "", false, "delete module cache for dependencies that fail verification")
},
run: func(ctx context.Context, cd *simplecobra.Commandeer, r *rootCommand, args []string) error {
conf, err := r.ConfigFromProvider(r.configVersionID.Load(), flagsToCfg(cd, nil))
if err != nil {
return err
}
client := conf.configs.ModulesClient
return client.Verify(clean)
},
},
&simpleCommand{
name: "graph",
short: "Print a module dependency graph.",
long: `Print a module dependency graph with information about module status (disabled, vendored).
Note that for vendored modules, that is the version listed and not the one from go.mod.
`,
withc: func(cmd *cobra.Command, r *rootCommand) {
applyLocalFlagsBuildConfig(cmd, r)
cmd.Flags().BoolVarP(&clean, "clean", "", false, "delete module cache for dependencies that fail verification")
},
run: func(ctx context.Context, cd *simplecobra.Commandeer, r *rootCommand, args []string) error {
conf, err := r.ConfigFromProvider(r.configVersionID.Load(), flagsToCfg(cd, nil))
if err != nil {
return err
}
client := conf.configs.ModulesClient
return client.Graph(os.Stdout)
},
},
&simpleCommand{
name: "clean",
short: "Delete the Hugo Module cache for the current project.",
long: `Delete the Hugo Module cache for the current project.`,
withc: func(cmd *cobra.Command, r *rootCommand) {
applyLocalFlagsBuildConfig(cmd, r)
cmd.Flags().StringVarP(&pattern, "pattern", "", "", `pattern matching module paths to clean (all if not set), e.g. "**hugo*"`)
cmd.Flags().BoolVarP(&all, "all", "", false, "clean entire module cache")
},
run: func(ctx context.Context, cd *simplecobra.Commandeer, r *rootCommand, args []string) error {
h, err := r.Hugo(flagsToCfg(cd, nil))
if err != nil {
return err
}
if all {
modCache := h.ResourceSpec.FileCaches.ModulesCache()
count, err := modCache.Prune(true)
r.Printf("Deleted %d files from module cache.", count)
return err
}
return h.Configs.ModulesClient.Clean(pattern)
},
},
&simpleCommand{
name: "tidy",
short: "Remove unused entries in go.mod and go.sum.",
withc: func(cmd *cobra.Command, r *rootCommand) {
applyLocalFlagsBuildConfig(cmd, r)
},
run: func(ctx context.Context, cd *simplecobra.Commandeer, r *rootCommand, args []string) error {
h, err := r.Hugo(flagsToCfg(cd, nil))
if err != nil {
return err
}
return h.Configs.ModulesClient.Tidy()
},
},
&simpleCommand{
name: "vendor",
short: "Vendor all module dependencies into the _vendor directory.",
long: `Vendor all module dependencies into the _vendor directory.
If a module is vendored, that is where Hugo will look for it's dependencies.
`,
withc: func(cmd *cobra.Command, r *rootCommand) {
applyLocalFlagsBuildConfig(cmd, r)
},
run: func(ctx context.Context, cd *simplecobra.Commandeer, r *rootCommand, args []string) error {
h, err := r.Hugo(flagsToCfg(cd, nil))
if err != nil {
return err
}
return h.Configs.ModulesClient.Vendor()
},
},
&simpleCommand{
name: "get",
short: "Resolves dependencies in your current Hugo Project.",
long: `
Resolves dependencies in your current Hugo Project.
Some examples:
Install the latest version possible for a given module:
hugo mod get github.com/gohugoio/testshortcodes
Install a specific version:
hugo mod get github.com/gohugoio/testshortcodes@v0.3.0
Install the latest versions of all direct module dependencies:
hugo mod get
hugo mod get ./... (recursive)
Install the latest versions of all module dependencies (direct and indirect):
hugo mod get -u
hugo mod get -u ./... (recursive)
Run "go help get" for more information. All flags available for "go get" is also relevant here.
` + commonUsageMod,
withc: func(cmd *cobra.Command, r *rootCommand) {
cmd.DisableFlagParsing = true
},
run: func(ctx context.Context, cd *simplecobra.Commandeer, r *rootCommand, args []string) error {
// We currently just pass on the flags we get to Go and
// need to do the flag handling manually.
if len(args) == 1 && (args[0] == "-h" || args[0] == "--help") {
return errHelp
}
var lastArg string
if len(args) != 0 {
lastArg = args[len(args)-1]
}
if lastArg == "./..." {
args = args[:len(args)-1]
// Do a recursive update.
dirname, err := os.Getwd()
if err != nil {
return err
}
// Sanity chesimplecobra. We do recursive walking and want to avoid
// accidents.
if len(dirname) < 5 {
return errors.New("must not be run from the file system root")
}
filepath.Walk(dirname, func(path string, info os.FileInfo, err error) error {
if info.IsDir() {
return nil
}
if info.Name() == "go.mod" {
// Found a module.
dir := filepath.Dir(path)
r.Println("Update module in", dir)
cfg := config.New()
cfg.Set("workingDir", dir)
conf, err := r.ConfigFromProvider(r.configVersionID.Load(), flagsToCfg(cd, cfg))
if err != nil {
return err
}
client := conf.configs.ModulesClient
return client.Get(args...)
}
return nil
})
return nil
} else {
conf, err := r.ConfigFromProvider(r.configVersionID.Load(), flagsToCfg(cd, nil))
if err != nil {
return err
}
client := conf.configs.ModulesClient
return client.Get(args...)
}
},
},
npmCommand,
},
}
}
type modCommands struct {
r *rootCommand
commands []simplecobra.Commander
}
func (c *modCommands) Commands() []simplecobra.Commander {
return c.commands
}
func (c *modCommands) Name() string {
return "mod"
}
func (c *modCommands) Run(ctx context.Context, cd *simplecobra.Commandeer, args []string) error {
_, err := c.r.ConfigFromProvider(c.r.configVersionID.Load(), nil)
if err != nil {
return err
}
// config := conf.configs.Base
return nil
}
func (c *modCommands) Init(cd *simplecobra.Commandeer) error {
cmd := cd.CobraCommand
cmd.Short = "Various Hugo Modules helpers."
cmd.Long = `Various helpers to help manage the modules in your project's dependency graph.
Most operations here requires a Go version installed on your system (>= Go 1.12) and the relevant VCS client (typically Git).
This is not needed if you only operate on modules inside /themes or if you have vendored them via "hugo mod vendor".
` + commonUsageMod
cmd.RunE = nil
return nil
}
func (c *modCommands) PreRun(cd, runner *simplecobra.Commandeer) error {
c.r = cd.Root.Command.(*rootCommand)
return nil
}