81 lines
1.8 KiB
Go
81 lines
1.8 KiB
Go
package database
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import (
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"bytes"
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"database.orly/indexes/types"
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"encoders.orly/filter"
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"encoders.orly/tag"
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"encoders.orly/hex"
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"github.com/dgraph-io/badger/v4"
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"lol.mleku.dev/chk"
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"lol.mleku.dev/errorf"
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"lol.mleku.dev/log"
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)
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func (d *D) GetSerialById(id []byte) (ser *types.Uint40, err error) {
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log.T.F("GetSerialById: input id=%s", hex.Enc(id))
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var idxs []Range
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if idxs, err = GetIndexesFromFilter(&filter.F{Ids: tag.NewFromBytesSlice(id)}); chk.E(err) {
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return
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}
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if len(idxs) == 0 {
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err = errorf.E("no indexes found for id %0x", id)
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}
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if err = d.View(
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func(txn *badger.Txn) (err error) {
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it := txn.NewIterator(badger.DefaultIteratorOptions)
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var key []byte
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defer it.Close()
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it.Seek(idxs[0].Start)
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if it.ValidForPrefix(idxs[0].Start) {
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item := it.Item()
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key = item.Key()
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ser = new(types.Uint40)
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buf := bytes.NewBuffer(key[len(key)-5:])
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if err = ser.UnmarshalRead(buf); chk.E(err) {
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return
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}
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} else {
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// just don't return what we don't have? others may be
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// found tho.
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}
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return
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},
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); chk.E(err) {
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return
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}
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return
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}
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//
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// func (d *D) GetSerialBytesById(id []byte) (ser []byte, err error) {
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// var idxs []Range
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// if idxs, err = GetIndexesFromFilter(&filter.F{Ids: tag.New(id)}); chk.E(err) {
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// return
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// }
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// if len(idxs) == 0 {
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// err = errorf.E("no indexes found for id %0x", id)
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// }
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// if err = d.View(
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// func(txn *badger.Txn) (err error) {
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// it := txn.NewIterator(badger.DefaultIteratorOptions)
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// var key []byte
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// defer it.Close()
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// it.Seek(idxs[0].Start)
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// if it.ValidForPrefix(idxs[0].Start) {
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// item := it.Item()
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// key = item.Key()
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// ser = key[len(key)-5:]
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// } else {
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// // just don't return what we don't have? others may be
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// // found tho.
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// }
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// return
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// },
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// ); chk.E(err) {
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// return
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// }
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// return
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// }
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