lure-updater/internal/builtins/store.go

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2023-06-09 17:54:15 +00:00
/*
* LURE Updater - Automated updater bot for LURE packages
* Copyright (C) 2023 Elara Musayelyan
*
* 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 3 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/>.
*/
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package builtins
import (
"go.elara.ws/logger/log"
"go.etcd.io/bbolt"
"go.starlark.net/starlark"
"go.starlark.net/starlarkstruct"
)
func storeModule(db *bbolt.DB, bucketName string) *starlarkstruct.Module {
return &starlarkstruct.Module{
Name: "store",
Members: starlark.StringDict{
"set": storeSet(db, bucketName),
"get": storeGet(db, bucketName),
"delete": storeDelete(db, bucketName),
},
}
}
func storeSet(db *bbolt.DB, bucketName string) *starlark.Builtin {
return starlark.NewBuiltin("store.set", func(thread *starlark.Thread, b *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) {
var key, value string
err := starlark.UnpackArgs("store.set", args, kwargs, "key", &key, "value", &value)
if err != nil {
return nil, err
}
err = db.Update(func(tx *bbolt.Tx) error {
bucket, err := tx.CreateBucketIfNotExists([]byte(bucketName))
if err != nil {
return err
}
err = bucket.Put([]byte(key), []byte(value))
if err != nil {
return err
}
return nil
})
if err != nil {
return nil, err
}
log.Debug("Set value").Str("bucket", bucketName).Str("key", key).Str("value", value).Stringer("pos", thread.CallFrame(1).Pos).Send()
return starlark.None, nil
})
}
func storeGet(db *bbolt.DB, bucketName string) *starlark.Builtin {
return starlark.NewBuiltin("store.get", func(thread *starlark.Thread, b *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) {
var key string
err := starlark.UnpackArgs("store.get", args, kwargs, "key", &key)
if err != nil {
return nil, err
}
var value string
err = db.Update(func(tx *bbolt.Tx) error {
bucket, err := tx.CreateBucketIfNotExists([]byte(bucketName))
if err != nil {
return err
}
data := bucket.Get([]byte(key))
value = string(data)
return nil
})
if err != nil {
return nil, err
}
log.Debug("Retrieved value").Str("bucket", bucketName).Str("key", key).Str("value", value).Stringer("pos", thread.CallFrame(1).Pos).Send()
return starlark.String(value), nil
})
}
func storeDelete(db *bbolt.DB, bucketName string) *starlark.Builtin {
return starlark.NewBuiltin("store.delete", func(thread *starlark.Thread, b *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) {
var key string
err := starlark.UnpackArgs("store.delete", args, kwargs, "key", &key)
if err != nil {
return nil, err
}
err = db.Update(func(tx *bbolt.Tx) error {
bucket, err := tx.CreateBucketIfNotExists([]byte(bucketName))
if err != nil {
return err
}
return bucket.Delete([]byte(key))
})
if err != nil {
return nil, err
}
log.Debug("Deleted value").Str("bucket", bucketName).Str("key", key).Stringer("pos", thread.CallFrame(1).Pos).Send()
return starlark.None, nil
})
}