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318 lines
12 KiB
Go
318 lines
12 KiB
Go
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package importutil
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import (
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"context"
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"encoding/json"
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"fmt"
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"strconv"
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"github.com/cockroachdb/errors"
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"go.uber.org/zap"
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"github.com/milvus-io/milvus/internal/allocator"
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"github.com/milvus-io/milvus/internal/storage"
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"github.com/milvus-io/milvus/pkg/common"
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"github.com/milvus-io/milvus/pkg/log"
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"github.com/milvus-io/milvus/pkg/util/typeutil"
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)
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// JSONRowHandler is the interface to process rows data
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type JSONRowHandler interface {
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Handle(rows []map[storage.FieldID]interface{}) error
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}
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func getKeyValue(obj interface{}, fieldName string, isString bool) (string, error) {
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// varchar type primary field, the value must be a string
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if isString {
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if value, ok := obj.(string); ok {
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return value, nil
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}
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return "", fmt.Errorf("illegal value '%v' for varchar type key field '%s'", obj, fieldName)
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}
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// int64 type primary field, the value must be json.Number
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if num, ok := obj.(json.Number); ok {
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return string(num), nil
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}
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return "", fmt.Errorf("illegal value '%v' for int64 type key field '%s'", obj, fieldName)
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}
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// JSONRowConsumer is row-based json format consumer class
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type JSONRowConsumer struct {
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ctx context.Context // for canceling parse process
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collectionInfo *CollectionInfo // collection details including schema
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rowIDAllocator *allocator.IDAllocator // autoid allocator
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validators map[storage.FieldID]*Validator // validators for each field
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rowCounter int64 // how many rows have been consumed
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shardsData []ShardData // in-memory shards data
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blockSize int64 // maximum size of a read block(unit:byte)
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autoIDRange []int64 // auto-generated id range, for example: [1, 10, 20, 25] means id from 1 to 10 and 20 to 25
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callFlushFunc ImportFlushFunc // call back function to flush segment
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}
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func NewJSONRowConsumer(ctx context.Context,
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collectionInfo *CollectionInfo,
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idAlloc *allocator.IDAllocator,
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blockSize int64,
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flushFunc ImportFlushFunc,
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) (*JSONRowConsumer, error) {
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if collectionInfo == nil {
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log.Warn("JSON row consumer: collection schema is nil")
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return nil, errors.New("collection schema is nil")
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}
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v := &JSONRowConsumer{
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ctx: ctx,
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collectionInfo: collectionInfo,
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rowIDAllocator: idAlloc,
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validators: make(map[storage.FieldID]*Validator),
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blockSize: blockSize,
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rowCounter: 0,
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autoIDRange: make([]int64, 0),
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callFlushFunc: flushFunc,
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}
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err := initValidators(collectionInfo.Schema, v.validators)
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if err != nil {
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log.Warn("JSON row consumer: fail to initialize json row-based consumer", zap.Error(err))
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return nil, fmt.Errorf("fail to initialize json row-based consumer, error: %w", err)
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}
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v.shardsData = make([]ShardData, 0, collectionInfo.ShardNum)
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for i := 0; i < int(collectionInfo.ShardNum); i++ {
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shardData := initShardData(collectionInfo.Schema, collectionInfo.PartitionIDs)
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if shardData == nil {
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log.Warn("JSON row consumer: fail to initialize in-memory segment data", zap.Int("shardID", i))
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return nil, fmt.Errorf("fail to initialize in-memory segment data for shard id %d", i)
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}
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v.shardsData = append(v.shardsData, shardData)
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}
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// primary key is autoid, id generator is required
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if v.collectionInfo.PrimaryKey.GetAutoID() && idAlloc == nil {
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log.Warn("JSON row consumer: ID allocator is nil")
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return nil, errors.New("ID allocator is nil")
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}
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return v, nil
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}
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func (v *JSONRowConsumer) IDRange() []int64 {
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return v.autoIDRange
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}
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func (v *JSONRowConsumer) RowCount() int64 {
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return v.rowCounter
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}
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func (v *JSONRowConsumer) Handle(rows []map[storage.FieldID]interface{}) error {
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if v == nil || v.validators == nil || len(v.validators) == 0 {
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log.Warn("JSON row consumer is not initialized")
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return errors.New("JSON row consumer is not initialized")
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}
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// if rows is nil, that means read to end of file, force flush all data
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if rows == nil {
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err := tryFlushBlocks(v.ctx, v.shardsData, v.collectionInfo.Schema, v.callFlushFunc, v.blockSize, MaxTotalSizeInMemory, true)
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log.Info("JSON row consumer finished")
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return err
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}
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// rows is not nil, flush in necessary:
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// 1. data block size larger than v.blockSize will be flushed
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// 2. total data size exceeds MaxTotalSizeInMemory, the largest data block will be flushed
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err := tryFlushBlocks(v.ctx, v.shardsData, v.collectionInfo.Schema, v.callFlushFunc, v.blockSize, MaxTotalSizeInMemory, false)
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if err != nil {
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log.Warn("JSON row consumer: try flush data but failed", zap.Error(err))
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return fmt.Errorf("try flush data but failed, error: %w", err)
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}
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// prepare autoid, no matter int64 or varchar pk, we always generate autoid since the hidden field RowIDField requires them
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primaryKeyID := v.collectionInfo.PrimaryKey.FieldID
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primaryValidator := v.validators[primaryKeyID]
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var rowIDBegin typeutil.UniqueID
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var rowIDEnd typeutil.UniqueID
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if primaryValidator.autoID {
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if v.rowIDAllocator == nil {
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log.Warn("JSON row consumer: primary keys is auto-generated but IDAllocator is nil")
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return fmt.Errorf("primary keys is auto-generated but IDAllocator is nil")
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}
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var err error
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rowIDBegin, rowIDEnd, err = v.rowIDAllocator.Alloc(uint32(len(rows)))
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if err != nil {
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log.Warn("JSON row consumer: failed to generate primary keys", zap.Int("count", len(rows)), zap.Error(err))
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return fmt.Errorf("failed to generate %d primary keys, error: %w", len(rows), err)
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}
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if rowIDEnd-rowIDBegin != int64(len(rows)) {
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log.Warn("JSON row consumer: try to generate primary keys but allocated ids are not enough",
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zap.Int("count", len(rows)), zap.Int64("generated", rowIDEnd-rowIDBegin))
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return fmt.Errorf("try to generate %d primary keys but only %d keys were allocated", len(rows), rowIDEnd-rowIDBegin)
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}
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log.Info("JSON row consumer: auto-generate primary keys", zap.Int64("begin", rowIDBegin), zap.Int64("end", rowIDEnd))
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if !primaryValidator.isString {
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// if pk is varchar, no need to record auto-generated row ids
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v.autoIDRange = append(v.autoIDRange, rowIDBegin, rowIDEnd)
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}
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}
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// consume rows
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for i := 0; i < len(rows); i++ {
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row := rows[i]
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rowNumber := v.rowCounter + int64(i)
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// hash to a shard number
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var shard uint32
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var partitionID int64
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if primaryValidator.isString {
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if primaryValidator.autoID {
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log.Warn("JSON row consumer: string type primary key cannot be auto-generated")
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return errors.New("string type primary key cannot be auto-generated")
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}
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value := row[primaryKeyID]
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pk, err := getKeyValue(value, primaryValidator.fieldName, primaryValidator.isString)
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if err != nil {
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log.Warn("JSON row consumer: failed to parse primary key at the row",
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zap.Int64("rowNumber", rowNumber), zap.Error(err))
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return fmt.Errorf("failed to parse primary key at the row %d, error: %w", rowNumber, err)
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}
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// hash to shard based on pk, hash to partition if partition key exist
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hash := typeutil.HashString2Uint32(pk)
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shard = hash % uint32(v.collectionInfo.ShardNum)
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partitionID, err = v.hashToPartition(row, rowNumber)
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if err != nil {
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return err
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}
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pkArray := v.shardsData[shard][partitionID][primaryKeyID].(*storage.StringFieldData)
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pkArray.Data = append(pkArray.Data, pk)
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} else {
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// get/generate the row id
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var pk int64
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if primaryValidator.autoID {
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pk = rowIDBegin + int64(i)
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} else {
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value := row[primaryKeyID]
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strValue, err := getKeyValue(value, primaryValidator.fieldName, primaryValidator.isString)
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if err != nil {
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log.Warn("JSON row consumer: failed to parse primary key at the row",
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zap.Int64("rowNumber", rowNumber), zap.Error(err))
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return fmt.Errorf("failed to parse primary key at the row %d, error: %w", rowNumber, err)
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}
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// parse the pk from a string
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pk, err = strconv.ParseInt(strValue, 10, 64)
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if err != nil {
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log.Warn("JSON row consumer: failed to parse primary key at the row",
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zap.String("value", strValue), zap.Int64("rowNumber", rowNumber), zap.Error(err))
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return fmt.Errorf("failed to parse primary key '%s' at the row %d, error: %w",
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strValue, rowNumber, err)
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}
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}
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hash, err := typeutil.Hash32Int64(pk)
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if err != nil {
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log.Warn("JSON row consumer: failed to hash primary key at the row",
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zap.Int64("key", pk), zap.Int64("rowNumber", rowNumber), zap.Error(err))
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return fmt.Errorf("failed to hash primary key %d at the row %d, error: %w", pk, rowNumber, err)
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}
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// hash to shard based on pk, hash to partition if partition key exist
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shard = hash % uint32(v.collectionInfo.ShardNum)
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partitionID, err = v.hashToPartition(row, rowNumber)
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if err != nil {
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return err
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}
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pkArray := v.shardsData[shard][partitionID][primaryKeyID].(*storage.Int64FieldData)
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pkArray.Data = append(pkArray.Data, pk)
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}
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// set rowid field
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rowIDField := v.shardsData[shard][partitionID][common.RowIDField].(*storage.Int64FieldData)
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rowIDField.Data = append(rowIDField.Data, rowIDBegin+int64(i))
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// convert value and consume
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for fieldID, validator := range v.validators {
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if validator.primaryKey {
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continue
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}
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value := row[fieldID]
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if err := validator.convertFunc(value, v.shardsData[shard][partitionID][fieldID]); err != nil {
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log.Warn("JSON row consumer: failed to convert value for field at the row",
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zap.String("fieldName", validator.fieldName), zap.Int64("rowNumber", rowNumber), zap.Error(err))
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return fmt.Errorf("failed to convert value for field '%s' at the row %d, error: %w",
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validator.fieldName, rowNumber, err)
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}
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}
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}
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v.rowCounter += int64(len(rows))
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return nil
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}
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// hashToPartition hash partition key to get an partition ID, return the first partition ID if no partition key exist
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// CollectionInfo ensures only one partition ID in the PartitionIDs if no partition key exist
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func (v *JSONRowConsumer) hashToPartition(row map[storage.FieldID]interface{}, rowNumber int64) (int64, error) {
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if v.collectionInfo.PartitionKey == nil {
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if len(v.collectionInfo.PartitionIDs) != 1 {
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return 0, fmt.Errorf("collection '%s' partition list is empty", v.collectionInfo.Schema.Name)
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}
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// no partition key, directly return the target partition id
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return v.collectionInfo.PartitionIDs[0], nil
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}
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partitionKeyID := v.collectionInfo.PartitionKey.GetFieldID()
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partitionKeyValidator := v.validators[partitionKeyID]
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value := row[partitionKeyID]
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strValue, err := getKeyValue(value, partitionKeyValidator.fieldName, partitionKeyValidator.isString)
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if err != nil {
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log.Warn("JSON row consumer: failed to parse partition key at the row",
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zap.Int64("rowNumber", rowNumber), zap.Error(err))
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return 0, fmt.Errorf("failed to parse partition key at the row %d, error: %w", rowNumber, err)
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}
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var hashValue uint32
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if partitionKeyValidator.isString {
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hashValue = typeutil.HashString2Uint32(strValue)
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} else {
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// parse the value from a string
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pk, err := strconv.ParseInt(strValue, 10, 64)
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if err != nil {
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log.Warn("JSON row consumer: failed to parse partition key at the row",
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zap.String("value", strValue), zap.Int64("rowNumber", rowNumber), zap.Error(err))
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return 0, fmt.Errorf("failed to parse partition key '%s' at the row %d, error: %w",
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strValue, rowNumber, err)
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}
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hashValue, err = typeutil.Hash32Int64(pk)
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if err != nil {
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log.Warn("JSON row consumer: failed to hash partition key at the row",
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zap.Int64("key", pk), zap.Int64("rowNumber", rowNumber), zap.Error(err))
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return 0, fmt.Errorf("failed to hash partition key %d at the row %d, error: %w", pk, rowNumber, err)
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}
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}
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index := int64(hashValue % uint32(len(v.collectionInfo.PartitionIDs)))
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return v.collectionInfo.PartitionIDs[index], nil
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}
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