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packager_kraftfile_runtime.go
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packager_kraftfile_runtime.go
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// SPDX-License-Identifier: BSD-3-Clause
// Copyright (c) 2023, 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 pkg
import (
"context"
"fmt"
"os"
"strings"
"github.com/mattn/go-shellwords"
"kraftkit.sh/config"
"kraftkit.sh/log"
"kraftkit.sh/machine/platform"
"kraftkit.sh/pack"
"kraftkit.sh/packmanager"
"kraftkit.sh/tui/paraprogress"
"kraftkit.sh/tui/processtree"
"kraftkit.sh/unikraft"
ukarch "kraftkit.sh/unikraft/arch"
"kraftkit.sh/unikraft/target"
)
type packagerKraftfileRuntime struct{}
// String implements fmt.Stringer.
func (p *packagerKraftfileRuntime) String() string {
return "runtime"
}
// Packagable implements packager.
func (p *packagerKraftfileRuntime) Packagable(ctx context.Context, opts *PkgOptions, args ...string) (bool, error) {
if opts.Project == nil {
if err := opts.initProject(ctx); err != nil {
return false, err
}
}
if opts.Project.Runtime() == nil {
return false, fmt.Errorf("cannot package without unikraft core specification")
}
return true, nil
}
// Pack implements packager.
func (p *packagerKraftfileRuntime) Pack(ctx context.Context, opts *PkgOptions, args ...string) ([]pack.Package, error) {
var err error
var targ target.Target
targets := opts.Project.Targets()
qopts := []packmanager.QueryOption{
packmanager.WithName(opts.Project.Runtime().Name()),
packmanager.WithVersion(opts.Project.Runtime().Version()),
}
if len(targets) == 1 {
targ = targets[0]
} else if len(targets) > 1 {
// Filter project targets by any provided CLI options
targets = target.Filter(
targets,
opts.Architecture,
opts.Platform,
opts.Target,
)
switch {
case len(targets) == 0:
return nil, fmt.Errorf("could not detect any project targets based on plat=\"%s\" arch=\"%s\"", opts.Platform, opts.Architecture)
case len(targets) == 1:
targ = targets[0]
case config.G[config.KraftKit](ctx).NoPrompt && len(targets) > 1:
return nil, fmt.Errorf("could not determine what to run based on provided CLI arguments")
default:
targ, err = target.Select(targets)
if err != nil {
return nil, fmt.Errorf("could not select target: %v", err)
}
}
}
if targ != nil {
var kconfigs []string
for _, kc := range targ.KConfig() {
kconfigs = append(kconfigs, kc.String())
}
qopts = append(qopts,
packmanager.WithPlatform(targ.Platform().Name()),
packmanager.WithArchitecture(targ.Architecture().Name()),
packmanager.WithKConfig(kconfigs),
)
} else {
if opts.Platform != "" {
qopts = append(qopts,
packmanager.WithPlatform(opts.Platform),
)
}
if opts.Architecture != "" {
qopts = append(qopts,
packmanager.WithArchitecture(opts.Architecture),
)
}
}
packs, err := opts.pm.Catalog(ctx, append(qopts, packmanager.WithUpdate(false))...)
if err != nil {
return nil, fmt.Errorf("could not query catalog: %w", err)
} else if len(packs) == 0 {
// Try again with a remote update request. Save this to qopts in case we
// need to call `Catalog` again.
qopts = append(qopts, packmanager.WithUpdate(true))
packs, err = opts.pm.Catalog(ctx, qopts...)
if err != nil {
return nil, fmt.Errorf("could not query catalog: %w", err)
} else if len(packs) == 0 {
return nil, fmt.Errorf("coud not find runtime '%s'", opts.Project.Runtime().Name())
}
}
if len(packs) > 1 && targ == nil && (opts.Architecture == "" || opts.Platform == "") {
// At this point, we have queried the registry without asking for the
// platform and architecture and received multiple options. Re-query the
// catalog with the host architecture and platform.
if opts.Architecture == "" {
opts.Architecture, err = ukarch.HostArchitecture()
if err != nil {
return nil, fmt.Errorf("could not get host architecture: %w", err)
}
}
if opts.Platform == "" {
plat, _, err := platform.Detect(ctx)
if err != nil {
return nil, fmt.Errorf("could not get host platform: %w", err)
}
opts.Platform = plat.String()
}
qopts = append(qopts,
packmanager.WithPlatform(opts.Platform),
packmanager.WithArchitecture(opts.Architecture),
)
packs, err = opts.pm.Catalog(ctx, qopts...)
if err != nil {
return nil, fmt.Errorf("could not query catalog: %w", err)
} else if len(packs) == 0 {
return nil, fmt.Errorf("coud not find runtime '%s'", opts.Project.Runtime().Name())
} else if len(packs) > 1 {
return nil, fmt.Errorf("could not find runtime: too many options")
}
log.G(ctx).
WithField("arch", opts.Architecture).
WithField("plat", opts.Platform).
Info("using")
}
// Create a temporary directory we can use to store the artifacts from
// pulling and extracting the identified package.
tempDir, err := os.MkdirTemp("", "kraft-pkg-")
if err != nil {
return nil, fmt.Errorf("could not create temporary directory: %w", err)
}
defer func() {
os.RemoveAll(tempDir)
}()
paramodel, err := paraprogress.NewParaProgress(
ctx,
[]*paraprogress.Process{paraprogress.NewProcess(
fmt.Sprintf("pulling %s", packs[0].String()),
func(ctx context.Context, w func(progress float64)) error {
popts := []pack.PullOption{
pack.WithPullWorkdir(tempDir),
}
if log.LoggerTypeFromString(config.G[config.KraftKit](ctx).Log.Type) == log.FANCY {
popts = append(popts, pack.WithPullProgressFunc(w))
}
return packs[0].Pull(
ctx,
popts...,
)
},
)},
paraprogress.IsParallel(false),
paraprogress.WithRenderer(
log.LoggerTypeFromString(config.G[config.KraftKit](ctx).Log.Type) != log.FANCY,
),
paraprogress.WithFailFast(true),
)
if err != nil {
return nil, err
}
if err := paramodel.Start(); err != nil {
return nil, err
}
// Crucially, the catalog should return an interface that also implements
// target.Target. This demonstrates that the implementing package can
// resolve application kernels.
targ, ok := packs[0].(target.Target)
if !ok {
return nil, fmt.Errorf("package does not convert to target")
}
// If no arguments have been specified, use the ones which are default and
// that have been included in the package.
if len(opts.Args) == 0 {
opts.Args = targ.Command()
}
cmdShellArgs, err := shellwords.Parse(strings.Join(opts.Args, " "))
if err != nil {
return nil, err
}
var result []pack.Package
norender := log.LoggerTypeFromString(config.G[config.KraftKit](ctx).Log.Type) != log.FANCY
model, err := processtree.NewProcessTree(
ctx,
[]processtree.ProcessTreeOption{
processtree.IsParallel(false),
processtree.WithRenderer(norender),
},
processtree.NewProcessTreeItem(
"packaging "+opts.Name+" ("+opts.Format+")",
targ.Platform().Name()+"/"+targ.Architecture().Name(),
func(ctx context.Context) error {
popts := append(opts.packopts,
packmanager.PackArgs(cmdShellArgs...),
packmanager.PackInitrd(opts.Rootfs),
packmanager.PackKConfig(!opts.NoKConfig),
packmanager.PackName(opts.Name),
packmanager.PackOutput(opts.Output),
)
if ukversion, ok := targ.KConfig().Get(unikraft.UK_FULLVERSION); ok {
popts = append(popts,
packmanager.PackWithKernelVersion(ukversion.Value),
)
}
more, err := opts.pm.Pack(ctx, targ, popts...)
if err != nil {
return err
}
result = append(result, more...)
return nil
},
),
)
if err != nil {
return nil, err
}
if err := model.Start(); err != nil {
return nil, err
}
return result, nil
}