mirror of
https://github.com/chrislusf/seaweedfs
synced 2024-06-21 01:52:50 +02:00
76 lines
2.5 KiB
Go
76 lines
2.5 KiB
Go
//go:build ydb
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// +build ydb
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package ydb
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import (
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"context"
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"fmt"
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"github.com/chrislusf/seaweedfs/weed/filer"
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"github.com/chrislusf/seaweedfs/weed/filer/abstract_sql"
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"github.com/chrislusf/seaweedfs/weed/util"
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"github.com/ydb-platform/ydb-go-sdk/v3/table"
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"github.com/ydb-platform/ydb-go-sdk/v3/table/result/named"
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"github.com/ydb-platform/ydb-go-sdk/v3/table/types"
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)
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func (store *YdbStore) KvPut(ctx context.Context, key []byte, value []byte) (err error) {
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dirStr, dirHash, name := abstract_sql.GenDirAndName(key)
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fileMeta := FileMeta{dirHash, name, dirStr, value}
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return store.DB.Table().Do(ctx, func(ctx context.Context, s table.Session) (err error) {
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_, _, err = s.Execute(ctx, rwTX, *withPragma(&store.tablePathPrefix, upsertQuery),
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fileMeta.queryParameters(0))
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if err != nil {
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return fmt.Errorf("kv put execute %s: %v", util.NewFullPath(dirStr, name).Name(), err)
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}
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return nil
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})
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}
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func (store *YdbStore) KvGet(ctx context.Context, key []byte) (value []byte, err error) {
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dirStr, dirHash, name := abstract_sql.GenDirAndName(key)
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valueFound := false
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err = store.DB.Table().Do(ctx, func(ctx context.Context, s table.Session) error {
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_, res, err := s.Execute(ctx, roTX, *withPragma(&store.tablePathPrefix, findQuery),
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table.NewQueryParameters(
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table.ValueParam("$dir_hash", types.Int64Value(dirHash)),
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table.ValueParam("$name", types.UTF8Value(name))))
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if err != nil {
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return fmt.Errorf("kv get execute %s: %v", util.NewFullPath(dirStr, name).Name(), err)
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}
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defer func() { _ = res.Close() }()
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if !res.NextResultSet(ctx) || !res.HasNextRow() {
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return nil
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}
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for res.NextRow() {
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if err := res.ScanNamed(named.OptionalWithDefault("meta", &value)); err != nil {
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return fmt.Errorf("scanNamed %s : %v", util.NewFullPath(dirStr, name).Name(), err)
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}
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valueFound = true
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return nil
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}
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return res.Err()
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})
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if !valueFound {
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return nil, filer.ErrKvNotFound
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}
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return value, nil
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}
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func (store *YdbStore) KvDelete(ctx context.Context, key []byte) (err error) {
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dirStr, dirHash, name := abstract_sql.GenDirAndName(key)
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return store.DB.Table().Do(ctx, func(ctx context.Context, s table.Session) (err error) {
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_, _, err = s.Execute(ctx, rwTX, *withPragma(&store.tablePathPrefix, deleteQuery),
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table.NewQueryParameters(
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table.ValueParam("$dir_hash", types.Int64Value(dirHash)),
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table.ValueParam("$name", types.UTF8Value(name))))
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if err != nil {
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return fmt.Errorf("kv delete %s: %v", util.NewFullPath(dirStr, name).Name(), err)
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}
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return nil
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})
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}
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