mirror of
https://github.com/wavetermdev/waveterm.git
synced 2024-12-21 16:38:23 +01:00
280 lines
7.9 KiB
Go
280 lines
7.9 KiB
Go
// Copyright 2024, Command Line Inc.
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// SPDX-License-Identifier: Apache-2.0
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package wstore
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import (
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"context"
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"fmt"
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"log"
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"reflect"
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"time"
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"github.com/wavetermdev/thenextwave/pkg/filestore"
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"github.com/wavetermdev/thenextwave/pkg/waveobj"
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"github.com/wavetermdev/waveterm/wavesrv/pkg/dbutil"
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)
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var ErrNotFound = fmt.Errorf("not found")
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func waveObjTableName(w waveobj.WaveObj) string {
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return "db_" + w.GetOType()
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}
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func tableNameFromOType(otype string) string {
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return "db_" + otype
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}
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func tableNameGen[T waveobj.WaveObj]() string {
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var zeroObj T
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return tableNameFromOType(zeroObj.GetOType())
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}
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func getOTypeGen[T waveobj.WaveObj]() string {
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var zeroObj T
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return zeroObj.GetOType()
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}
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func DBGetCount[T waveobj.WaveObj](ctx context.Context) (int, error) {
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return WithTxRtn(ctx, func(tx *TxWrap) (int, error) {
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table := tableNameGen[T]()
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query := fmt.Sprintf("SELECT count(*) FROM %s", table)
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return tx.GetInt(query), nil
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})
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}
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type idDataType struct {
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OId string
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Version int
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Data []byte
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}
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func genericCastWithErr[T any](v any, err error) (T, error) {
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if err != nil {
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var zeroVal T
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return zeroVal, err
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}
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if v == nil {
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var zeroVal T
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return zeroVal, nil
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}
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return v.(T), err
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}
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func DBGetSingleton[T waveobj.WaveObj](ctx context.Context) (T, error) {
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rtn, err := DBGetSingletonByType(ctx, getOTypeGen[T]())
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return genericCastWithErr[T](rtn, err)
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}
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func DBGetSingletonByType(ctx context.Context, otype string) (waveobj.WaveObj, error) {
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return WithTxRtn(ctx, func(tx *TxWrap) (waveobj.WaveObj, error) {
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table := tableNameFromOType(otype)
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query := fmt.Sprintf("SELECT oid, version, data FROM %s LIMIT 1", table)
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var row idDataType
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found := tx.Get(&row, query)
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if !found {
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return nil, ErrNotFound
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}
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rtn, err := waveobj.FromJson(row.Data)
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if err != nil {
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return rtn, err
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}
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waveobj.SetVersion(rtn, row.Version)
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return rtn, nil
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})
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}
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func DBExistsORef(ctx context.Context, oref waveobj.ORef) (bool, error) {
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return WithTxRtn(ctx, func(tx *TxWrap) (bool, error) {
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table := tableNameFromOType(oref.OType)
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query := fmt.Sprintf("SELECT oid FROM %s WHERE oid = ?", table)
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return tx.Exists(query, oref.OID), nil
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})
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}
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func DBGet[T waveobj.WaveObj](ctx context.Context, id string) (T, error) {
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rtn, err := DBGetORef(ctx, waveobj.ORef{OType: getOTypeGen[T](), OID: id})
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return genericCastWithErr[T](rtn, err)
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}
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func DBMustGet[T waveobj.WaveObj](ctx context.Context, id string) (T, error) {
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rtn, err := DBGetORef(ctx, waveobj.ORef{OType: getOTypeGen[T](), OID: id})
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if err != nil {
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var zeroVal T
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return zeroVal, err
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}
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if rtn == nil {
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var zeroVal T
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return zeroVal, ErrNotFound
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}
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return rtn.(T), nil
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}
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func DBGetORef(ctx context.Context, oref waveobj.ORef) (waveobj.WaveObj, error) {
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return WithTxRtn(ctx, func(tx *TxWrap) (waveobj.WaveObj, error) {
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table := tableNameFromOType(oref.OType)
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query := fmt.Sprintf("SELECT oid, version, data FROM %s WHERE oid = ?", table)
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var row idDataType
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found := tx.Get(&row, query, oref.OID)
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if !found {
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return nil, nil
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}
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rtn, err := waveobj.FromJson(row.Data)
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if err != nil {
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return rtn, err
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}
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waveobj.SetVersion(rtn, row.Version)
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return rtn, nil
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})
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}
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func dbSelectOIDs(ctx context.Context, otype string, oids []string) ([]waveobj.WaveObj, error) {
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return WithTxRtn(ctx, func(tx *TxWrap) ([]waveobj.WaveObj, error) {
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table := tableNameFromOType(otype)
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query := fmt.Sprintf("SELECT oid, version, data FROM %s WHERE oid IN (SELECT value FROM json_each(?))", table)
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var rows []idDataType
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tx.Select(&rows, query, dbutil.QuickJson(oids))
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rtn := make([]waveobj.WaveObj, 0, len(rows))
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for _, row := range rows {
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waveObj, err := waveobj.FromJson(row.Data)
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if err != nil {
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return nil, err
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}
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waveobj.SetVersion(waveObj, row.Version)
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rtn = append(rtn, waveObj)
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}
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return rtn, nil
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})
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}
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func DBSelectORefs(ctx context.Context, orefs []waveobj.ORef) ([]waveobj.WaveObj, error) {
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oidsByType := make(map[string][]string)
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for _, oref := range orefs {
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oidsByType[oref.OType] = append(oidsByType[oref.OType], oref.OID)
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}
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return WithTxRtn(ctx, func(tx *TxWrap) ([]waveobj.WaveObj, error) {
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rtn := make([]waveobj.WaveObj, 0, len(orefs))
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for otype, oids := range oidsByType {
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rtnArr, err := dbSelectOIDs(tx.Context(), otype, oids)
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if err != nil {
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return nil, err
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}
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rtn = append(rtn, rtnArr...)
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}
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return rtn, nil
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})
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}
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func DBResolveEasyOID(ctx context.Context, oid string) (*waveobj.ORef, error) {
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return WithTxRtn(ctx, func(tx *TxWrap) (*waveobj.ORef, error) {
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for _, rtype := range AllWaveObjTypes() {
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otype := reflect.Zero(rtype).Interface().(waveobj.WaveObj).GetOType()
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table := tableNameFromOType(otype)
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var fullOID string
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if len(oid) == 8 {
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query := fmt.Sprintf("SELECT oid FROM %s WHERE oid LIKE ?", table)
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fullOID = tx.GetString(query, oid+"%")
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} else {
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query := fmt.Sprintf("SELECT oid FROM %s WHERE oid = ?", table)
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fullOID = tx.GetString(query, oid)
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}
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if fullOID != "" {
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oref := waveobj.MakeORef(otype, fullOID)
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return &oref, nil
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}
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}
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return nil, ErrNotFound
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})
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}
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func DBSelectMap[T waveobj.WaveObj](ctx context.Context, ids []string) (map[string]T, error) {
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rtnArr, err := dbSelectOIDs(ctx, getOTypeGen[T](), ids)
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if err != nil {
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return nil, err
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}
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rtnMap := make(map[string]T)
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for _, obj := range rtnArr {
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rtnMap[waveobj.GetOID(obj)] = obj.(T)
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}
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return rtnMap, nil
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}
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func DBDelete(ctx context.Context, otype string, id string) error {
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err := WithTx(ctx, func(tx *TxWrap) error {
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table := tableNameFromOType(otype)
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query := fmt.Sprintf("DELETE FROM %s WHERE oid = ?", table)
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tx.Exec(query, id)
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ContextAddUpdate(ctx, WaveObjUpdate{UpdateType: UpdateType_Delete, OType: otype, OID: id})
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return nil
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})
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if err != nil {
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return err
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}
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go func() {
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// we spawn a go routine here because we don't want to reuse the DB connection
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// since DBDelete is called in a transaction from DeleteTab
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deleteCtx, cancelFn := context.WithTimeout(context.Background(), 2*time.Second)
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defer cancelFn()
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err := filestore.WFS.DeleteZone(deleteCtx, id)
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if err != nil {
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log.Printf("error deleting filestore zone (after deleting block): %v", err)
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}
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}()
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return nil
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}
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func DBUpdate(ctx context.Context, val waveobj.WaveObj) error {
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oid := waveobj.GetOID(val)
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if oid == "" {
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return fmt.Errorf("cannot update %T value with empty id", val)
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}
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jsonData, err := waveobj.ToJson(val)
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if err != nil {
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return err
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}
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return WithTx(ctx, func(tx *TxWrap) error {
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table := waveObjTableName(val)
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query := fmt.Sprintf("UPDATE %s SET data = ?, version = version+1 WHERE oid = ? RETURNING version", table)
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newVersion := tx.GetInt(query, jsonData, oid)
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waveobj.SetVersion(val, newVersion)
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ContextAddUpdate(ctx, WaveObjUpdate{UpdateType: UpdateType_Update, OType: val.GetOType(), OID: oid, Obj: val})
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return nil
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})
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}
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func DBInsert(ctx context.Context, val waveobj.WaveObj) error {
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oid := waveobj.GetOID(val)
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if oid == "" {
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return fmt.Errorf("cannot insert %T value with empty id", val)
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}
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jsonData, err := waveobj.ToJson(val)
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if err != nil {
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return err
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}
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return WithTx(ctx, func(tx *TxWrap) error {
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table := waveObjTableName(val)
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waveobj.SetVersion(val, 1)
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query := fmt.Sprintf("INSERT INTO %s (oid, version, data) VALUES (?, ?, ?)", table)
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tx.Exec(query, oid, 1, jsonData)
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ContextAddUpdate(ctx, WaveObjUpdate{UpdateType: UpdateType_Update, OType: val.GetOType(), OID: oid, Obj: val})
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return nil
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})
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}
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func DBFindWindowForTabId(ctx context.Context, tabId string) (string, error) {
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return WithTxRtn(ctx, func(tx *TxWrap) (string, error) {
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query := "SELECT oid FROM db_window WHERE data->>'activetabid' = ?"
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return tx.GetString(query, tabId), nil
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})
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}
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func DBFindTabForBlockId(ctx context.Context, blockId string) (string, error) {
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return WithTxRtn(ctx, func(tx *TxWrap) (string, error) {
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query := `
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SELECT t.oid
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FROM db_tab t, json_each(data->'blockids') je
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WHERE je.value = ?;`
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return tx.GetString(query, blockId), nil
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})
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}
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