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

114 lines
3.0 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/>.
// Recipe 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/types"
pkg "github.com/mudler/luet/pkg/database"
fileHelper "github.com/mudler/luet/pkg/helpers/file"
spectooling "github.com/mudler/luet/pkg/spectooling"
"github.com/pkg/errors"
)
func NewGeneralRecipe(db types.PackageDatabase, fp ...FileParser) Builder {
if len(fp) == 0 {
fp = DefaultInstallerParsers
}
return &Recipe{Database: db, fileParsers: fp}
}
// Recipe is the "general" reciper for Trees
type Recipe struct {
fileParsers []FileParser
SourcePath []string
Database types.PackageDatabase
}
func WriteDefinitionFile(p *types.Package, definitionFilePath string) error {
data, err := spectooling.NewDefaultPackageSanitized(p).Yaml()
if err != nil {
return err
}
err = ioutil.WriteFile(definitionFilePath, data, 0644)
if err != nil {
return err
}
return nil
}
func (r *Recipe) 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)
err := WriteDefinitionFile(p, filepath.Join(dir, types.PackageDefinitionFile))
if err != nil {
return err
}
}
return nil
}
func (r *Recipe) Load(path string) error {
// tmpfile, err := ioutil.TempFile("", "luet")
// if err != nil {
// return err
// }
if !fileHelper.Exists(path) {
return errors.New(fmt.Sprintf(
"Path %s doesn't exit.", path,
))
}
r.SourcePath = append(r.SourcePath, path)
if r.Database == nil {
r.Database = pkg.NewInMemoryDatabase(false)
}
var ff = func(currentpath string, info os.FileInfo, err error) error {
for _, p := range r.fileParsers {
if err := p(path, currentpath, info.Name(), []string{}, r.Database); err != nil {
return err
}
}
return nil
}
err := filepath.Walk(path, ff)
if err != nil {
return err
}
return nil
}
func (r *Recipe) GetDatabase() types.PackageDatabase { return r.Database }
func (r *Recipe) WithDatabase(d types.PackageDatabase) { r.Database = d }
func (r *Recipe) GetSourcePath() []string { return r.SourcePath }