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Golang kv.IsErrNotFound函數代碼示例

本文整理匯總了Golang中github.com/pingcap/tidb/kv.IsErrNotFound函數的典型用法代碼示例。如果您正苦於以下問題：Golang IsErrNotFound函數的具體用法？Golang IsErrNotFound怎麽用？Golang IsErrNotFound使用的例子？那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。


在下文中一共展示了IsErrNotFound函數的14個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Golang代碼示例。

示例1: Inc

func (txn *dbTxn) Inc(k kv.Key, step int64) (int64, error) {
	log.Debugf("Inc %q, step %d txn:%d", k, step, txn.tid)
	k = kv.EncodeKey(k)

	txn.markOrigin(k)
	val, err := txn.UnionStore.Get(k)
	if kv.IsErrNotFound(err) {
		err = txn.UnionStore.Set(k, []byte(strconv.FormatInt(step, 10)))
		if err != nil {
			return 0, errors.Trace(err)
		}

		return step, nil
	}
	if err != nil {
		return 0, errors.Trace(err)
	}

	intVal, err := strconv.ParseInt(string(val), 10, 0)
	if err != nil {
		return intVal, errors.Trace(err)
	}

	intVal += step
	err = txn.UnionStore.Set(k, []byte(strconv.FormatInt(intVal, 10)))
	if err != nil {
		return 0, errors.Trace(err)
	}
	txn.store.compactor.OnSet(k)
	return intVal, nil
}
開發者ID:yzl11，項目名稱:vessel，代碼行數:31，代碼來源:txn.go

示例2: Exist

func (c *index) Exist(rm kv.RetrieverMutator, indexedValues []types.Datum, h int64) (bool, int64, error) {
	key, distinct, err := c.GenIndexKey(indexedValues, h)
	if err != nil {
		return false, 0, errors.Trace(err)
	}

	value, err := rm.Get(key)
	if kv.IsErrNotFound(err) {
		return false, 0, nil
	}
	if err != nil {
		return false, 0, errors.Trace(err)
	}

	// For distinct index, the value of key is handle.
	if distinct {
		handle, err := decodeHandle(value)
		if err != nil {
			return false, 0, errors.Trace(err)
		}

		if handle != h {
			return true, handle, errors.Trace(kv.ErrKeyExists)
		}

		return true, handle, nil
	}

	return true, h, nil
}
開發者ID:anywhy，項目名稱:tidb，代碼行數:30，代碼來源:index.go

示例3: Inc

func (txn *hbaseTxn) Inc(k kv.Key, step int64) (int64, error) {
	log.Debugf("Inc %q, step %d txn:%d", k, step, txn.tid)
	val, err := txn.UnionStore.Get(k)
	if kv.IsErrNotFound(err) {
		err = txn.UnionStore.Set(k, []byte(strconv.FormatInt(step, 10)))
		if err != nil {
			return 0, errors.Trace(err)
		}

		return step, nil
	}

	if err != nil {
		return 0, errors.Trace(err)
	}

	intVal, err := strconv.ParseInt(string(val), 10, 64)
	if err != nil {
		return intVal, errors.Trace(err)
	}

	intVal += step
	err = txn.UnionStore.Set(k, []byte(strconv.FormatInt(intVal, 10)))
	if err != nil {
		return 0, errors.Trace(err)
	}
	return intVal, nil
}
開發者ID:henrylee2cn，項目名稱:tidb，代碼行數:28，代碼來源:txn.go

示例4: Inc

func (txn *dbTxn) Inc(k []byte, step int64) (int64, error) {
	log.Debugf("Inc %s, step %d txn:%d", k, step, txn.tID)
	k = kv.EncodeKey(k)

	if err := txn.markOrigin(k); err != nil {
		return 0, err
	}
	val, err := txn.UnionStore.Get(k)
	if kv.IsErrNotFound(err) {
		err = txn.UnionStore.Set(k, []byte(strconv.FormatInt(step, 10)))
		if err != nil {
			return 0, err
		}

		return step, nil
	}

	if err != nil {
		return 0, err
	}

	intVal, err := strconv.ParseInt(string(val), 10, 0)
	if err != nil {
		return intVal, err
	}

	intVal += step
	err = txn.UnionStore.Set(k, []byte(strconv.FormatInt(intVal, 10)))
	if err != nil {
		return 0, err
	}

	return intVal, nil
}
開發者ID:ninefive，項目名稱:tidb，代碼行數:34，代碼來源:txn.go

示例5: backfillColumnData

func (d *ddl) backfillColumnData(t table.Table, columnInfo *model.ColumnInfo, handles []int64, reorgInfo *reorgInfo) error {
	for _, handle := range handles {
		log.Info("[ddl] backfill column...", handle)

		err := kv.RunInNewTxn(d.store, true, func(txn kv.Transaction) error {
			if err := d.isReorgRunnable(txn); err != nil {
				return errors.Trace(err)
			}

			// First check if row exists.
			exist, err := checkRowExist(txn, t, handle)
			if err != nil {
				return errors.Trace(err)
			} else if !exist {
				// If row doesn't exist, skip it.
				return nil
			}

			backfillKey := t.RecordKey(handle, &column.Col{ColumnInfo: *columnInfo})
			backfillValue, err := txn.Get(backfillKey)
			if err != nil && !kv.IsErrNotFound(err) {
				return errors.Trace(err)
			}
			if backfillValue != nil {
				return nil
			}

			value, _, err := tables.GetColDefaultValue(nil, columnInfo)
			if err != nil {
				return errors.Trace(err)
			}

			// must convert to the column field type.
			v, err := types.Convert(value, &columnInfo.FieldType)
			if err != nil {
				return errors.Trace(err)
			}

			err = lockRow(txn, t, handle)
			if err != nil {
				return errors.Trace(err)
			}

			err = t.SetColValue(txn, backfillKey, v)
			if err != nil {
				return errors.Trace(err)
			}

			return errors.Trace(reorgInfo.UpdateHandle(txn, handle))
		})

		if err != nil {
			return errors.Trace(err)
		}
	}

	return nil
}
開發者ID:youprofit，項目名稱:tidb，代碼行數:58，代碼來源:column.go

示例6: Get

func (txn *hbaseTxn) Get(k kv.Key) ([]byte, error) {
	log.Debugf("get key:%q, txn:%d", k, txn.tid)
	val, err := txn.UnionStore.Get(k)
	if kv.IsErrNotFound(err) || len(val) == 0 {
		return nil, errors.Trace(kv.ErrNotExist)
	}
	if err != nil {
		return nil, errors.Trace(err)
	}
	return val, nil
}
開發者ID:henrylee2cn，項目名稱:tidb，代碼行數:11，代碼來源:txn.go

示例7: GetInt64

func (txn *dbTxn) GetInt64(k kv.Key) (int64, error) {
	val, err := txn.UnionStore.Get(k)
	if kv.IsErrNotFound(err) {
		return 0, nil
	}
	if err != nil {
		return 0, errors.Trace(err)
	}
	intVal, err := strconv.ParseInt(string(val), 10, 0)
	return intVal, errors.Trace(err)
}
開發者ID:henrylee2cn，項目名稱:tidb，代碼行數:11，代碼來源:txn.go

示例8: BatchGet

func (s *dbSnapshot) BatchGet(keys []kv.Key) (map[string][]byte, error) {
	m := make(map[string][]byte)
	for _, k := range keys {
		v, err := s.Get(k)
		if err != nil && !kv.IsErrNotFound(err) {
			return nil, errors.Trace(err)
		}
		if len(v) > 0 {
			m[string(k)] = v
		}
	}
	return m, nil
}
開發者ID:XuHuaiyu，項目名稱:tidb，代碼行數:13，代碼來源:snapshot.go

示例9: Get

func (txn *dbTxn) Get(k kv.Key) ([]byte, error) {
	log.Debugf("get key:%q, txn:%d", k, txn.tid)
	k = kv.EncodeKey(k)
	val, err := txn.UnionStore.Get(k)
	if kv.IsErrNotFound(err) {
		return nil, errors.Trace(kv.ErrNotExist)
	}
	if err != nil {
		return nil, errors.Trace(err)
	}
	if len(val) == 0 {
		return nil, errors.Trace(kv.ErrNotExist)
	}
	txn.store.compactor.OnGet(k)
	return val, nil
}
開發者ID:yzl11，項目名稱:vessel，代碼行數:16，代碼來源:txn.go

示例10: markOrigin

func (txn *dbTxn) markOrigin(k []byte) error {
	keystr := string(k)

	// Already exist, no nothing
	if _, ok := txn.snapshotVals[keystr]; ok {
		return nil
	}

	val, err := txn.Snapshot.Get(k)
	if err != nil && !kv.IsErrNotFound(err) {
		return err
	}

	//log.Debugf("markOrigin, key:%s, value:%s", keystr, val)
	txn.snapshotVals[keystr] = val
	return nil
}
開發者ID:ninefive，項目名稱:tidb，代碼行數:17，代碼來源:txn.go

示例11: Get

func (txn *dbTxn) Get(k []byte) ([]byte, error) {
	log.Debugf("get key:%s, txn:%d", k, txn.tID)
	k = kv.EncodeKey(k)
	val, err := txn.UnionStore.Get(k)
	if kv.IsErrNotFound(err) {
		return nil, kv.ErrNotExist
	}
	if err != nil {
		return nil, err
	}

	if len(val) == 0 {
		return nil, kv.ErrNotExist
	}

	return val, nil
}
開發者ID:ninefive，項目名稱:tidb，代碼行數:17，代碼來源:txn.go

示例12: newScanner

func newScanner(snapshot *tikvSnapshot, startKey []byte, batchSize int) (*Scanner, error) {
	// It must be > 1. Otherwise scanner won't skipFirst.
	if batchSize <= 1 {
		batchSize = scanBatchSize
	}
	scanner := &Scanner{
		snapshot:     snapshot,
		batchSize:    batchSize,
		valid:        true,
		nextStartKey: startKey,
	}
	err := scanner.Next()
	if kv.IsErrNotFound(err) {
		return scanner, nil
	}
	return scanner, errors.Trace(err)
}
開發者ID:anywhy，項目名稱:tidb，代碼行數:17，代碼來源:scan.go

示例13: Create

// Create creates a new entry in the kvIndex data.
// If the index is unique and there is an existing entry with the same key, Create will return ErrKeyExists.
func (c *index) Create(rm kv.RetrieverMutator, indexedValues []types.Datum, h int64) error {
	key, distinct, err := c.GenIndexKey(indexedValues, h)
	if err != nil {
		return errors.Trace(err)
	}
	if !distinct {
		// TODO: reconsider value
		err = rm.Set(key, []byte("timestamp?"))
		return errors.Trace(err)
	}

	_, err = rm.Get(key)
	if kv.IsErrNotFound(err) {
		err = rm.Set(key, encodeHandle(h))
		return errors.Trace(err)
	}

	return errors.Trace(kv.ErrKeyExists)
}
開發者ID:anywhy，項目名稱:tidb，代碼行數:21，代碼來源:index.go

示例14: Create

// Create creates a new entry in the kvIndex data.
// If the index is unique and there is an existing entry with the same key,
// Create will return the existing entry's handle as the first return value, ErrKeyExists as the second return value.
func (c *index) Create(rm kv.RetrieverMutator, indexedValues []types.Datum, h int64) (int64, error) {
	key, distinct, err := c.GenIndexKey(indexedValues, h)
	if err != nil {
		return 0, errors.Trace(err)
	}
	if !distinct {
		// non-unique index doesn't need store value, write a '0' to reduce space
		err = rm.Set(key, []byte{'0'})
		return 0, errors.Trace(err)
	}

	value, err := rm.Get(key)
	if kv.IsErrNotFound(err) {
		err = rm.Set(key, encodeHandle(h))
		return 0, errors.Trace(err)
	}
	handle, err := decodeHandle(value)
	if err != nil {
		return 0, errors.Trace(err)
	}
	return handle, errors.Trace(kv.ErrKeyExists)
}
開發者ID:pingcap，項目名稱:tidb，代碼行數:25，代碼來源:index.go


注：本文中的github.com/pingcap/tidb/kv.IsErrNotFound函數示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。