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pull.go
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pull.go
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// SPDX-License-Identifier: BSD-3-Clause
// Copyright (c) 2022, Unikraft GmbH and The KraftKit Authors.
// Licensed under the BSD-3-Clause License (the "License").
// You may not use this file except in compliance with the License.
package pull
import (
"context"
"fmt"
"os"
"strings"
"github.com/MakeNowJust/heredoc"
"github.com/spf13/cobra"
"kraftkit.sh/cmdfactory"
"kraftkit.sh/config"
"kraftkit.sh/iostreams"
"kraftkit.sh/log"
"kraftkit.sh/machine/platform"
"kraftkit.sh/pack"
"kraftkit.sh/packmanager"
"kraftkit.sh/tui/paraprogress"
"kraftkit.sh/tui/processtree"
"kraftkit.sh/tui/selection"
"kraftkit.sh/unikraft"
"kraftkit.sh/unikraft/app"
"kraftkit.sh/unikraft/arch"
)
type PullOptions struct {
All bool `long:"all" short:"A" usage:"Pull all versions"`
Architecture string `long:"arch" short:"m" usage:"Specify the desired architecture"`
Format string `long:"as" short:"f" usage:"Set the package format" default:"auto"`
KConfig []string `long:"kconfig" short:"k" usage:"Request a package with specific KConfig options."`
Kraftfile string `long:"kraftfile" short:"K" usage:"Set an alternative path of the Kraftfile"`
NoChecksum bool `long:"no-checksum" short:"C" usage:"Do not verify package checksum (if available)"`
Output string `long:"output" short:"o" usage:"Save the package contents to the provided directory"`
Platform string `long:"plat" short:"p" usage:"Specify the desired platform"`
Update bool `long:"update" short:"u" usage:"Perform an update which gathers remote sources"`
Workdir string `long:"workdir" short:"w" usage:"Set a path to working directory to pull components to"`
}
// Pull a Unikraft component.
func Pull(ctx context.Context, opts *PullOptions, args ...string) error {
if opts == nil {
opts = &PullOptions{}
}
return opts.Run(ctx, args)
}
func NewCmd() *cobra.Command {
cmd, err := cmdfactory.New(&PullOptions{}, cobra.Command{
Short: "Pull a Unikraft unikernel and/or its dependencies",
Use: "pull [FLAGS] [PACKAGE|DIR]",
Aliases: []string{"pl"},
Long: heredoc.Doc(`
Pull a Unikraft unikernel, component microlibrary from a remote location
`),
Example: heredoc.Doc(`
# Pull the dependencies for a project in the current working directory
$ kraft pkg pull
# Pull dependencies for a project at a path
$ kraft pkg pull path/to/app
# Pull a source repository
$ kraft pkg pull github.com/unikraft/app-nginx.git
# Pull from a manifest
$ kraft pkg pull nginx:1.21.6
# Pull from a registry
$ kraft pkg pull unikraft.org/nginx:1.21.6
`),
Annotations: map[string]string{
cmdfactory.AnnotationHelpGroup: "pkg",
},
})
if err != nil {
panic(err)
}
return cmd
}
func (opts *PullOptions) Pre(cmd *cobra.Command, _ []string) error {
ctx, err := packmanager.WithDefaultUmbrellaManagerInContext(cmd.Context())
if err != nil {
return err
}
cmd.SetContext(ctx)
if strings.ContainsRune(opts.Platform, '/') && opts.Architecture == "" {
split := strings.SplitN(opts.Platform, "/", 2)
if len(split) != 2 {
return fmt.Errorf("expected the flag in the form --plat=<plat>/<arch>")
}
opts.Platform = split[0]
opts.Architecture = split[1]
}
opts.Platform = platform.PlatformByName(opts.Platform).String()
return nil
}
func (opts *PullOptions) Run(ctx context.Context, args []string) error {
var err error
var project app.Application
var processes []*paraprogress.Process
if len(opts.Workdir) == 0 {
opts.Workdir, err = os.Getwd()
if err != nil {
return err
}
}
if len(opts.Output) == 0 {
opts.Output = opts.Workdir
}
if len(args) == 0 {
args = []string{opts.Workdir}
}
pm := packmanager.G(ctx)
parallel := !config.G[config.KraftKit](ctx).NoParallel
norender := log.LoggerTypeFromString(config.G[config.KraftKit](ctx).Log.Type) != log.FANCY
// Force a particular package manager
if len(opts.Format) > 0 && opts.Format != "auto" {
pm, err = pm.From(pack.PackageFormat(opts.Format))
if err != nil {
return err
}
}
// If `--all` is not set and either `--plat` or `--arch` are not set,
// use the host platform and architecture, as the user is likely trying
// to pull for their system by using "sensible defaults".
if !opts.All {
if opts.Architecture == "" {
opts.Architecture, err = arch.HostArchitecture()
if err != nil {
return fmt.Errorf("could not determine host architecture: %w", err)
}
}
if opts.Platform == "" {
platform, _, err := platform.Detect(ctx)
if err != nil {
return fmt.Errorf("could not detect host platform: %w", err)
}
opts.Platform = platform.String()
}
}
var queries [][]packmanager.QueryOption
// Are we pulling an application directory? If so, interpret the application
// so we can get a list of components
if f, err := os.Stat(args[0]); err == nil && f.IsDir() {
log.G(ctx).Debug("ignoring -w|--workdir")
opts.Workdir = args[0]
popts := []app.ProjectOption{}
if len(opts.Kraftfile) > 0 {
popts = append(popts, app.WithProjectKraftfile(opts.Kraftfile))
} else {
popts = append(popts, app.WithProjectDefaultKraftfiles())
}
project, err := app.NewProjectFromOptions(
ctx,
append(popts, app.WithProjectWorkdir(opts.Workdir))...,
)
if err != nil {
return err
}
if _, err = project.Components(ctx); err != nil {
var pullPack pack.Package
var packages []pack.Package
// Pull the template from the package manager
if project.Template() != nil {
search := processtree.NewProcessTreeItem(
fmt.Sprintf("finding %s",
unikraft.TypeNameVersion(project.Template()),
), "",
func(ctx context.Context) error {
qopts := []packmanager.QueryOption{
packmanager.WithName(project.Template().Name()),
packmanager.WithTypes(unikraft.ComponentTypeApp),
packmanager.WithVersion(project.Template().Version()),
packmanager.WithRemote(opts.Update),
packmanager.WithPlatform(opts.Platform),
packmanager.WithArchitecture(opts.Architecture),
packmanager.WithLocal(true),
}
packages, err = pm.Catalog(ctx, qopts...)
if err != nil {
return err
}
if len(packages) == 0 {
return fmt.Errorf("could not find: %s based on %s", unikraft.TypeNameVersion(project.Template()), packmanager.NewQuery(qopts...).String())
}
return nil
},
)
treemodel, err := processtree.NewProcessTree(
ctx,
[]processtree.ProcessTreeOption{
processtree.IsParallel(parallel),
processtree.WithRenderer(norender),
processtree.WithFailFast(true),
},
[]*processtree.ProcessTreeItem{search}...,
)
if err != nil {
return err
}
if err := treemodel.Start(); err != nil {
return fmt.Errorf("could not complete search: %v", err)
}
if len(packages) == 1 {
pullPack = packages[0]
} else if len(packages) > 1 {
if config.G[config.KraftKit](ctx).NoPrompt {
for _, p := range packages {
log.G(ctx).
WithField("template", p.String()).
Warn("possible")
}
return fmt.Errorf("too many options for %s and prompting has been disabled",
project.Template().String(),
)
}
selected, err := selection.Select[pack.Package]("select possible template", packages...)
if err != nil {
return err
}
pullPack = *selected
}
proc := paraprogress.NewProcess(
fmt.Sprintf("pulling %s",
unikraft.TypeNameVersion(pullPack),
),
func(ctx context.Context, w func(progress float64)) error {
return pullPack.Pull(
ctx,
pack.WithPullProgressFunc(w),
pack.WithPullWorkdir(opts.Output),
// pack.WithPullChecksum(!opts.NoChecksum),
// pack.WithPullCache(!opts.NoCache),
)
},
)
processes = append(processes, proc)
paramodel, err := paraprogress.NewParaProgress(
ctx,
processes,
paraprogress.IsParallel(parallel),
paraprogress.WithRenderer(norender),
paraprogress.WithFailFast(true),
)
if err != nil {
return err
}
if err := paramodel.Start(); err != nil {
return fmt.Errorf("could not pull all components: %v", err)
}
}
templateWorkdir, err := unikraft.PlaceComponent(opts.Output, project.Template().Type(), project.Template().Name())
if err != nil {
return err
}
templateProject, err := app.NewProjectFromOptions(
ctx,
append(popts, app.WithProjectWorkdir(templateWorkdir))...,
)
if err != nil {
return err
}
project, err = templateProject.MergeTemplate(ctx, project)
if err != nil {
return err
}
}
// List the components
components, err := project.Components(ctx)
if err != nil {
return err
}
for _, c := range components {
queries = append(queries, []packmanager.QueryOption{
packmanager.WithName(c.Name()),
packmanager.WithVersion(c.Version()),
packmanager.WithSource(c.Source()),
packmanager.WithTypes(c.Type()),
packmanager.WithRemote(opts.Update),
packmanager.WithPlatform(opts.Platform),
packmanager.WithArchitecture(opts.Architecture),
})
}
if project.Runtime() != nil {
queries = append(queries, []packmanager.QueryOption{
packmanager.WithName(project.Runtime().Name()),
packmanager.WithVersion(project.Runtime().Version()),
packmanager.WithRemote(opts.Update),
packmanager.WithPlatform(opts.Platform),
packmanager.WithArchitecture(opts.Architecture),
})
}
// Is this a list (space delimetered) of packages to pull?
} else if len(args) > 0 {
for _, arg := range args {
queries = append(queries, []packmanager.QueryOption{
packmanager.WithRemote(opts.Update),
packmanager.WithName(arg),
packmanager.WithArchitecture(opts.Architecture),
packmanager.WithPlatform(opts.Platform),
packmanager.WithKConfig(opts.KConfig),
})
}
}
if len(queries) == 0 {
return fmt.Errorf("no components to pull")
}
var found []pack.Package
var treeItems []*processtree.ProcessTreeItem
for _, qopts := range queries {
qopts := qopts
query := packmanager.NewQuery(qopts...)
treeItems = append(treeItems,
processtree.NewProcessTreeItem(
fmt.Sprintf("finding %s", query.String()),
"",
func(ctx context.Context) error {
more, err := pm.Catalog(ctx, qopts...)
if err != nil {
log.G(ctx).
WithField("format", pm.Format().String()).
WithField("name", query.Name()).
Warn(err)
return nil
}
if len(more) == 0 {
opts.Update = true
return fmt.Errorf("could not find local reference for %s", query.String())
}
found = append(found, more...)
return nil
},
),
)
}
tree, err := processtree.NewProcessTree(
ctx,
[]processtree.ProcessTreeOption{
processtree.IsParallel(parallel),
processtree.WithRenderer(norender),
processtree.WithFailFast(false),
processtree.WithHideOnSuccess(true),
processtree.WithHideError(!opts.Update),
},
treeItems...,
)
if err != nil {
return err
}
// Try again with a remote search
if err := tree.Start(); err != nil && (len(found) == 0 || !opts.Update) {
treeItems = []*processtree.ProcessTreeItem{}
for _, qopts := range queries {
qopts := qopts
query := packmanager.NewQuery(qopts...)
treeItems = append(treeItems,
processtree.NewProcessTreeItem(
fmt.Sprintf("finding %s", query.String()),
"",
func(ctx context.Context) error {
more, err := pm.Catalog(ctx, append(
qopts,
packmanager.WithRemote(true),
)...)
if err != nil {
log.G(ctx).
WithField("format", pm.Format().String()).
WithField("name", query.Name()).
Warn(err)
return nil
}
if len(more) == 0 {
return fmt.Errorf("could not find %s", query.String())
}
found = append(found, more...)
return nil
},
),
)
}
tree, err = processtree.NewProcessTree(
ctx,
[]processtree.ProcessTreeOption{
processtree.IsParallel(parallel),
processtree.WithRenderer(norender),
processtree.WithFailFast(false),
processtree.WithHideOnSuccess(true),
},
treeItems...,
)
if err != nil {
return err
}
if err := tree.Start(); err != nil {
return err
}
}
for _, p := range found {
p := p
processes = append(processes, paraprogress.NewProcess(
fmt.Sprintf("pulling %s", p.String()),
func(ctx context.Context, w func(progress float64)) error {
return p.Pull(
ctx,
pack.WithPullProgressFunc(w),
pack.WithPullWorkdir(opts.Output),
pack.WithPullChecksum(!opts.NoChecksum),
pack.WithPullCache(!opts.Update),
)
},
))
}
model, err := paraprogress.NewParaProgress(
ctx,
processes,
paraprogress.IsParallel(parallel),
paraprogress.WithRenderer(norender),
paraprogress.WithFailFast(false),
)
if err != nil {
return err
}
if err := model.Start(); err != nil {
return err
}
if project != nil {
fmt.Fprint(iostreams.G(ctx).Out, project.PrintInfo(ctx))
}
return nil
}