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luet/pkg/tree/installer_recipe.go
2022-04-27 21:39:55 +02:00

120 lines
3.4 KiB
Go

// Copyright © 2019 Ettore Di Giacinto <mudler@gentoo.org>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, see <http://www.gnu.org/licenses/>.
// InstallerRecipe is a builder imeplementation.
// It reads a Tree and spit it in human readable form (YAML), called recipe,
// It also loads a tree (recipe) from a YAML (to a db, e.g. BoltDB), allowing to query it
// with the solver, using the package object.
package tree
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"github.com/mudler/luet/pkg/api/core/template"
"github.com/mudler/luet/pkg/api/core/types"
fileHelper "github.com/mudler/luet/pkg/helpers/file"
"github.com/pkg/errors"
)
const (
FinalizerFile = "finalize.yaml"
)
var DefaultInstallerParsers = []FileParser{
RuntimeCollectionParser,
RuntimeDefinitionParser,
}
func NewInstallerRecipe(db types.PackageDatabase, fp ...FileParser) Builder {
if len(fp) == 0 {
fp = DefaultInstallerParsers
}
return &InstallerRecipe{Database: db, fileParsers: fp}
}
// InstallerRecipe is the "general" reciper for Trees
type InstallerRecipe struct {
SourcePath []string
Database types.PackageDatabase
fileParsers []FileParser
}
func (r *InstallerRecipe) Save(path string) error {
for _, p := range r.Database.World() {
dir := filepath.Join(path, p.GetCategory(), p.GetName(), p.GetVersion())
os.MkdirAll(dir, os.ModePerm)
data, err := p.Yaml()
if err != nil {
return err
}
err = ioutil.WriteFile(filepath.Join(dir, types.PackageDefinitionFile), data, 0644)
if err != nil {
return err
}
// Instead of rdeps, have a different tree for build deps.
finalizerPath := p.Rel(FinalizerFile)
if fileHelper.Exists(finalizerPath) { // copy finalizer file from the source tree
fileHelper.CopyFile(finalizerPath, filepath.Join(dir, FinalizerFile))
}
}
return nil
}
func (r *InstallerRecipe) Load(path string) error {
if !fileHelper.Exists(path) {
return errors.New(fmt.Sprintf(
"Path %s doesn't exit.", path,
))
}
r.SourcePath = append(r.SourcePath, path)
c, err := template.FilesInDir(template.FindPossibleTemplatesDir(path))
if err != nil {
return err
}
//r.Tree().SetPackageSet(pkg.NewBoltDatabase(tmpfile.Name()))
// TODO: Handle cleaning after? Cleanup implemented in GetPackageSet().Clean()
// the function that handles each file or dir
var ff = func(currentpath string, info os.FileInfo, err error) error {
for _, p := range r.fileParsers {
if err := p(path, currentpath, info.Name(), c, r.Database); err != nil {
return err
}
}
return nil
}
err = filepath.Walk(path, ff)
if err != nil {
return err
}
return nil
}
func (r *InstallerRecipe) GetDatabase() types.PackageDatabase { return r.Database }
func (r *InstallerRecipe) WithDatabase(d types.PackageDatabase) { r.Database = d }
func (r *InstallerRecipe) GetSourcePath() []string { return r.SourcePath }