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package ydb
import (
"context"
"fmt"
"github.com/ydb-platform/ydb-go-sdk/v3/table/options"
"github.com/chrislusf/seaweedfs/weed/filer"
"github.com/chrislusf/seaweedfs/weed/filer/abstract_sql"
"github.com/chrislusf/seaweedfs/weed/util"
"github.com/ydb-platform/ydb-go-sdk/v3/table"
"github.com/ydb-platform/ydb-go-sdk/v3/table/result/named"
"github.com/ydb-platform/ydb-go-sdk/v3/table/types"
)
func (store *YdbStore) KvPut(ctx context.Context, key []byte, value []byte) (err error) {
dirStr, dirHash, name := abstract_sql.GenDirAndName(key)
fileMeta := FileMeta{dirHash, name, dirStr, value}
return store.DB.Table().Do(ctx, func(ctx context.Context, s table.Session) (err error) {
_, _, err = s.Execute(ctx, rwTX, *withPragma(&store.tablePathPrefix, insertQuery),
fileMeta.queryParameters(0),
options.WithQueryCachePolicy(options.WithQueryCachePolicyKeepInCache()))
if err != nil {
return fmt.Errorf("kv put execute %s: %v", util.NewFullPath(dirStr, name).Name(), err)
}
return nil
})
}
func (store *YdbStore) KvGet(ctx context.Context, key []byte) (value []byte, err error) {
dirStr, dirHash, name := abstract_sql.GenDirAndName(key)
valueFound := false
err = store.DB.Table().Do(ctx, func(ctx context.Context, s table.Session) error {
_, res, err := s.Execute(ctx, roTX, *withPragma(&store.tablePathPrefix, findQuery),
table.NewQueryParameters(
table.ValueParam("$dir_hash", types.Int64Value(dirHash)),
table.ValueParam("$name", types.UTF8Value(name))),
options.WithQueryCachePolicy(options.WithQueryCachePolicyKeepInCache()))
if err != nil {
return fmt.Errorf("kv get execute %s: %v", util.NewFullPath(dirStr, name).Name(), err)
}
defer func() { _ = res.Close() }()
for res.NextResultSet(ctx) {
for res.NextRow() {
if err := res.ScanNamed(named.OptionalWithDefault("meta", &value)); err != nil {
return fmt.Errorf("scanNamed %s : %v", util.NewFullPath(dirStr, name).Name(), err)
}
valueFound = true
return nil
}
}
return res.Err()
})
if !valueFound {
return nil, filer.ErrKvNotFound
}
return value, nil
}
func (store *YdbStore) KvDelete(ctx context.Context, key []byte) (err error) {
dirStr, dirHash, name := abstract_sql.GenDirAndName(key)
return store.DB.Table().Do(ctx, func(ctx context.Context, s table.Session) (err error) {
_, _, err = s.Execute(ctx, rwTX, *withPragma(&store.tablePathPrefix, insertQuery),
table.NewQueryParameters(
table.ValueParam("$dir_hash", types.Int64Value(dirHash)),
table.ValueParam("$name", types.UTF8Value(name))),
options.WithQueryCachePolicy(options.WithQueryCachePolicyKeepInCache()))
if err != nil {
return fmt.Errorf("kv delete %s: %v", util.NewFullPath(dirStr, name).Name(), err)
}
return nil
})
}
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