917 lines
23 KiB
Go
917 lines
23 KiB
Go
// Copyright (c) 2014 Couchbase, Inc.
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
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// except in compliance with the License. You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software distributed under the
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// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific language governing permissions
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// and limitations under the License.
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package upside_down
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import (
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"encoding/json"
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"fmt"
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"math"
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"sync"
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"sync/atomic"
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"time"
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"github.com/blevesearch/bleve/analysis"
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"github.com/blevesearch/bleve/document"
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"github.com/blevesearch/bleve/index"
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"github.com/blevesearch/bleve/index/store"
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"github.com/blevesearch/bleve/registry"
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"github.com/golang/protobuf/proto"
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)
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const Name = "upside_down"
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// RowBufferSize should ideally this is sized to be the smallest
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// size that can cotain an index row key and its corresponding
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// value. It is not a limit, if need be a larger buffer is
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// allocated, but performance will be more optimal if *most*
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// rows fit this size.
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const RowBufferSize = 4 * 1024
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var VersionKey = []byte{'v'}
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var UnsafeBatchUseDetected = fmt.Errorf("bleve.Batch is NOT thread-safe, modification after execution detected")
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const Version uint8 = 5
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var IncompatibleVersion = fmt.Errorf("incompatible version, %d is supported", Version)
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type UpsideDownCouch struct {
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version uint8
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path string
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storeName string
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storeConfig map[string]interface{}
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store store.KVStore
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fieldCache *index.FieldCache
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analysisQueue *index.AnalysisQueue
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stats *indexStat
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m sync.RWMutex
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// fields protected by m
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docCount uint64
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writeMutex sync.Mutex
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}
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func NewUpsideDownCouch(storeName string, storeConfig map[string]interface{}, analysisQueue *index.AnalysisQueue) (index.Index, error) {
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return &UpsideDownCouch{
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version: Version,
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fieldCache: index.NewFieldCache(),
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storeName: storeName,
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storeConfig: storeConfig,
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analysisQueue: analysisQueue,
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stats: &indexStat{},
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}, nil
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}
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func (udc *UpsideDownCouch) init(kvwriter store.KVWriter) (err error) {
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// prepare a list of rows
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rows := make([]UpsideDownCouchRow, 0)
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// version marker
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rows = append(rows, NewVersionRow(udc.version))
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err = udc.batchRows(kvwriter, nil, rows, nil)
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return
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}
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func (udc *UpsideDownCouch) loadSchema(kvreader store.KVReader) (err error) {
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it := kvreader.PrefixIterator([]byte{'f'})
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defer func() {
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if cerr := it.Close(); err == nil && cerr != nil {
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err = cerr
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}
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}()
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key, val, valid := it.Current()
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for valid {
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var fieldRow *FieldRow
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fieldRow, err = NewFieldRowKV(key, val)
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if err != nil {
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return
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}
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udc.fieldCache.AddExisting(fieldRow.name, fieldRow.index)
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it.Next()
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key, val, valid = it.Current()
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}
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val, err = kvreader.Get([]byte{'v'})
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if err != nil {
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return
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}
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var vr *VersionRow
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vr, err = NewVersionRowKV([]byte{'v'}, val)
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if err != nil {
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return
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}
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if vr.version != Version {
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err = IncompatibleVersion
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return
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}
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return
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}
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var rowBufferPool sync.Pool
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func GetRowBuffer() []byte {
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if rb, ok := rowBufferPool.Get().([]byte); ok {
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return rb
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} else {
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return make([]byte, RowBufferSize)
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}
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}
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func PutRowBuffer(buf []byte) {
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rowBufferPool.Put(buf)
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}
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func (udc *UpsideDownCouch) batchRows(writer store.KVWriter, addRows []UpsideDownCouchRow, updateRows []UpsideDownCouchRow, deleteRows []UpsideDownCouchRow) (err error) {
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// prepare batch
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wb := writer.NewBatch()
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// buffer to work with
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rowBuf := GetRowBuffer()
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// add
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for _, row := range addRows {
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tfr, ok := row.(*TermFrequencyRow)
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if ok {
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if tfr.DictionaryRowKeySize() > len(rowBuf) {
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rowBuf = make([]byte, tfr.DictionaryRowKeySize())
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}
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dictKeySize, err := tfr.DictionaryRowKeyTo(rowBuf)
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if err != nil {
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return err
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}
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wb.Merge(rowBuf[:dictKeySize], dictionaryTermIncr)
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}
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if row.KeySize()+row.ValueSize() > len(rowBuf) {
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rowBuf = make([]byte, row.KeySize()+row.ValueSize())
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}
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keySize, err := row.KeyTo(rowBuf)
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if err != nil {
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return err
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}
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valSize, err := row.ValueTo(rowBuf[keySize:])
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wb.Set(rowBuf[:keySize], rowBuf[keySize:keySize+valSize])
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}
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// update
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for _, row := range updateRows {
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if row.KeySize()+row.ValueSize() > len(rowBuf) {
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rowBuf = make([]byte, row.KeySize()+row.ValueSize())
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}
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keySize, err := row.KeyTo(rowBuf)
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if err != nil {
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return err
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}
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valSize, err := row.ValueTo(rowBuf[keySize:])
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if err != nil {
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return err
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}
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wb.Set(rowBuf[:keySize], rowBuf[keySize:keySize+valSize])
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}
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// delete
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for _, row := range deleteRows {
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tfr, ok := row.(*TermFrequencyRow)
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if ok {
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// need to decrement counter
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if tfr.DictionaryRowKeySize() > len(rowBuf) {
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rowBuf = make([]byte, tfr.DictionaryRowKeySize())
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}
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dictKeySize, err := tfr.DictionaryRowKeyTo(rowBuf)
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if err != nil {
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return err
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}
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wb.Merge(rowBuf[:dictKeySize], dictionaryTermDecr)
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}
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if row.KeySize()+row.ValueSize() > len(rowBuf) {
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rowBuf = make([]byte, row.KeySize()+row.ValueSize())
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}
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keySize, err := row.KeyTo(rowBuf)
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if err != nil {
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return err
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}
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wb.Delete(rowBuf[:keySize])
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}
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PutRowBuffer(rowBuf)
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// write out the batch
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return writer.ExecuteBatch(wb)
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}
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func (udc *UpsideDownCouch) DocCount() (uint64, error) {
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udc.m.RLock()
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defer udc.m.RUnlock()
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return udc.docCount, nil
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}
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func (udc *UpsideDownCouch) Open() (err error) {
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//acquire the write mutex for the duratin of Open()
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udc.writeMutex.Lock()
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defer udc.writeMutex.Unlock()
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// open the kv store
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storeConstructor := registry.KVStoreConstructorByName(udc.storeName)
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if storeConstructor == nil {
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err = index.ErrorUnknownStorageType
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return
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}
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// now open the store
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udc.store, err = storeConstructor(&mergeOperator, udc.storeConfig)
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if err != nil {
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return
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}
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// start a reader to look at the index
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var kvreader store.KVReader
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kvreader, err = udc.store.Reader()
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if err != nil {
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return
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}
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var value []byte
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value, err = kvreader.Get(VersionKey)
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if err != nil {
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_ = kvreader.Close()
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return
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}
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if value != nil {
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err = udc.loadSchema(kvreader)
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if err != nil {
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_ = kvreader.Close()
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return
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}
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// set doc count
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udc.m.Lock()
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udc.docCount, err = udc.countDocs(kvreader)
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udc.m.Unlock()
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err = kvreader.Close()
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} else {
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// new index, close the reader and open writer to init
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err = kvreader.Close()
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if err != nil {
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return
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}
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var kvwriter store.KVWriter
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kvwriter, err = udc.store.Writer()
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if err != nil {
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return
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}
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defer func() {
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if cerr := kvwriter.Close(); err == nil && cerr != nil {
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err = cerr
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}
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}()
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// init the index
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err = udc.init(kvwriter)
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}
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return
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}
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func (udc *UpsideDownCouch) countDocs(kvreader store.KVReader) (count uint64, err error) {
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it := kvreader.PrefixIterator([]byte{'b'})
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defer func() {
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if cerr := it.Close(); err == nil && cerr != nil {
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err = cerr
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}
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}()
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_, _, valid := it.Current()
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for valid {
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count++
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it.Next()
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_, _, valid = it.Current()
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}
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return
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}
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func (udc *UpsideDownCouch) rowCount() (count uint64, err error) {
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// start an isolated reader for use during the rowcount
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kvreader, err := udc.store.Reader()
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if err != nil {
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return
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}
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defer func() {
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if cerr := kvreader.Close(); err == nil && cerr != nil {
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err = cerr
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}
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}()
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it := kvreader.RangeIterator(nil, nil)
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defer func() {
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if cerr := it.Close(); err == nil && cerr != nil {
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err = cerr
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}
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}()
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_, _, valid := it.Current()
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for valid {
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count++
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it.Next()
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_, _, valid = it.Current()
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}
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return
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}
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func (udc *UpsideDownCouch) Close() error {
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return udc.store.Close()
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}
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func (udc *UpsideDownCouch) Update(doc *document.Document) (err error) {
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// do analysis before acquiring write lock
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analysisStart := time.Now()
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resultChan := make(chan *index.AnalysisResult)
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aw := index.NewAnalysisWork(udc, doc, resultChan)
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// put the work on the queue
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udc.analysisQueue.Queue(aw)
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// wait for the result
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result := <-resultChan
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close(resultChan)
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atomic.AddUint64(&udc.stats.analysisTime, uint64(time.Since(analysisStart)))
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udc.writeMutex.Lock()
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defer udc.writeMutex.Unlock()
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// open a reader for backindex lookup
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var kvreader store.KVReader
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kvreader, err = udc.store.Reader()
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if err != nil {
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return
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}
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// first we lookup the backindex row for the doc id if it exists
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// lookup the back index row
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var backIndexRow *BackIndexRow
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backIndexRow, err = udc.backIndexRowForDoc(kvreader, doc.ID)
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if err != nil {
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_ = kvreader.Close()
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atomic.AddUint64(&udc.stats.errors, 1)
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return
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}
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err = kvreader.Close()
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if err != nil {
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return
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}
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// start a writer for this update
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indexStart := time.Now()
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var kvwriter store.KVWriter
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kvwriter, err = udc.store.Writer()
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if err != nil {
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return
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}
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defer func() {
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if cerr := kvwriter.Close(); err == nil && cerr != nil {
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err = cerr
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}
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}()
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// prepare a list of rows
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addRows := make([]UpsideDownCouchRow, 0)
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updateRows := make([]UpsideDownCouchRow, 0)
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deleteRows := make([]UpsideDownCouchRow, 0)
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addRows, updateRows, deleteRows = udc.mergeOldAndNew(backIndexRow, result.Rows, addRows, updateRows, deleteRows)
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err = udc.batchRows(kvwriter, addRows, updateRows, deleteRows)
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if err == nil && backIndexRow == nil {
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udc.m.Lock()
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udc.docCount++
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udc.m.Unlock()
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}
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atomic.AddUint64(&udc.stats.indexTime, uint64(time.Since(indexStart)))
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if err == nil {
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atomic.AddUint64(&udc.stats.updates, 1)
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} else {
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atomic.AddUint64(&udc.stats.errors, 1)
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}
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return
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}
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func (udc *UpsideDownCouch) mergeOldAndNew(backIndexRow *BackIndexRow, rows []index.IndexRow, addRows, updateRows, deleteRows []UpsideDownCouchRow) ([]UpsideDownCouchRow, []UpsideDownCouchRow, []UpsideDownCouchRow) {
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existingTermKeys := make(map[string]bool)
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for _, key := range backIndexRow.AllTermKeys() {
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existingTermKeys[string(key)] = true
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}
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existingStoredKeys := make(map[string]bool)
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for _, key := range backIndexRow.AllStoredKeys() {
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existingStoredKeys[string(key)] = true
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}
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keyBuf := GetRowBuffer()
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for _, row := range rows {
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switch row := row.(type) {
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case *TermFrequencyRow:
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keySize, _ := row.KeyTo(keyBuf)
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if _, ok := existingTermKeys[string(keyBuf[:keySize])]; ok {
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updateRows = append(updateRows, row)
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delete(existingTermKeys, string(keyBuf[:keySize]))
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} else {
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addRows = append(addRows, row)
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}
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case *StoredRow:
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keySize, _ := row.KeyTo(keyBuf)
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if _, ok := existingStoredKeys[string(keyBuf[:keySize])]; ok {
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updateRows = append(updateRows, row)
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delete(existingStoredKeys, string(keyBuf[:keySize]))
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} else {
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addRows = append(addRows, row)
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}
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default:
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updateRows = append(updateRows, row)
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}
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}
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PutRowBuffer(keyBuf)
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// any of the existing rows that weren't updated need to be deleted
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for existingTermKey := range existingTermKeys {
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termFreqRow, err := NewTermFrequencyRowK([]byte(existingTermKey))
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if err == nil {
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deleteRows = append(deleteRows, termFreqRow)
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}
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}
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// any of the existing stored fields that weren't updated need to be deleted
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for existingStoredKey := range existingStoredKeys {
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storedRow, err := NewStoredRowK([]byte(existingStoredKey))
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if err == nil {
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deleteRows = append(deleteRows, storedRow)
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}
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}
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return addRows, updateRows, deleteRows
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}
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func (udc *UpsideDownCouch) storeField(docID string, field document.Field, fieldIndex uint16) ([]index.IndexRow, []*BackIndexStoreEntry) {
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rows := make([]index.IndexRow, 0, 100)
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backIndexStoredEntries := make([]*BackIndexStoreEntry, 0)
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fieldType := encodeFieldType(field)
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storedRow := NewStoredRow(docID, fieldIndex, field.ArrayPositions(), fieldType, field.Value())
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// record the back index entry
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backIndexStoredEntry := BackIndexStoreEntry{Field: proto.Uint32(uint32(fieldIndex)), ArrayPositions: field.ArrayPositions()}
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backIndexStoredEntries = append(backIndexStoredEntries, &backIndexStoredEntry)
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rows = append(rows, storedRow)
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return rows, backIndexStoredEntries
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}
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func encodeFieldType(f document.Field) byte {
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fieldType := byte('x')
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switch f.(type) {
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case *document.TextField:
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fieldType = 't'
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case *document.NumericField:
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fieldType = 'n'
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case *document.DateTimeField:
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fieldType = 'd'
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case *document.CompositeField:
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fieldType = 'c'
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}
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return fieldType
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}
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func (udc *UpsideDownCouch) indexField(docID string, field document.Field, fieldIndex uint16, fieldLength int, tokenFreqs analysis.TokenFrequencies) ([]index.IndexRow, []*BackIndexTermEntry) {
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rows := make([]index.IndexRow, 0, 100)
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backIndexTermEntries := make([]*BackIndexTermEntry, 0, len(tokenFreqs))
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fieldNorm := float32(1.0 / math.Sqrt(float64(fieldLength)))
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for k, tf := range tokenFreqs {
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var termFreqRow *TermFrequencyRow
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if field.Options().IncludeTermVectors() {
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tv, newFieldRows := udc.termVectorsFromTokenFreq(fieldIndex, tf)
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rows = append(rows, newFieldRows...)
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termFreqRow = NewTermFrequencyRowWithTermVectors(tf.Term, fieldIndex, docID, uint64(frequencyFromTokenFreq(tf)), fieldNorm, tv)
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} else {
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termFreqRow = NewTermFrequencyRow(tf.Term, fieldIndex, docID, uint64(frequencyFromTokenFreq(tf)), fieldNorm)
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}
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// record the back index entry
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backIndexTermEntry := BackIndexTermEntry{Term: proto.String(k), Field: proto.Uint32(uint32(fieldIndex))}
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backIndexTermEntries = append(backIndexTermEntries, &backIndexTermEntry)
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rows = append(rows, termFreqRow)
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}
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return rows, backIndexTermEntries
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}
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func (udc *UpsideDownCouch) Delete(id string) (err error) {
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indexStart := time.Now()
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udc.writeMutex.Lock()
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defer udc.writeMutex.Unlock()
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// open a reader for backindex lookup
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var kvreader store.KVReader
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kvreader, err = udc.store.Reader()
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if err != nil {
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return
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}
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// first we lookup the backindex row for the doc id if it exists
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// lookup the back index row
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var backIndexRow *BackIndexRow
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backIndexRow, err = udc.backIndexRowForDoc(kvreader, id)
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if err != nil {
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_ = kvreader.Close()
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atomic.AddUint64(&udc.stats.errors, 1)
|
|
return
|
|
}
|
|
|
|
err = kvreader.Close()
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
if backIndexRow == nil {
|
|
atomic.AddUint64(&udc.stats.deletes, 1)
|
|
return
|
|
}
|
|
|
|
// start a writer for this delete
|
|
var kvwriter store.KVWriter
|
|
kvwriter, err = udc.store.Writer()
|
|
if err != nil {
|
|
return
|
|
}
|
|
defer func() {
|
|
if cerr := kvwriter.Close(); err == nil && cerr != nil {
|
|
err = cerr
|
|
}
|
|
}()
|
|
|
|
deleteRows := make([]UpsideDownCouchRow, 0)
|
|
deleteRows = udc.deleteSingle(id, backIndexRow, deleteRows)
|
|
|
|
err = udc.batchRows(kvwriter, nil, nil, deleteRows)
|
|
if err == nil {
|
|
udc.m.Lock()
|
|
udc.docCount--
|
|
udc.m.Unlock()
|
|
}
|
|
atomic.AddUint64(&udc.stats.indexTime, uint64(time.Since(indexStart)))
|
|
if err == nil {
|
|
atomic.AddUint64(&udc.stats.deletes, 1)
|
|
} else {
|
|
atomic.AddUint64(&udc.stats.errors, 1)
|
|
}
|
|
return
|
|
}
|
|
|
|
func (udc *UpsideDownCouch) deleteSingle(id string, backIndexRow *BackIndexRow, deleteRows []UpsideDownCouchRow) []UpsideDownCouchRow {
|
|
|
|
for _, backIndexEntry := range backIndexRow.termEntries {
|
|
tfr := NewTermFrequencyRow([]byte(*backIndexEntry.Term), uint16(*backIndexEntry.Field), id, 0, 0)
|
|
deleteRows = append(deleteRows, tfr)
|
|
}
|
|
for _, se := range backIndexRow.storedEntries {
|
|
sf := NewStoredRow(id, uint16(*se.Field), se.ArrayPositions, 'x', nil)
|
|
deleteRows = append(deleteRows, sf)
|
|
}
|
|
|
|
// also delete the back entry itself
|
|
deleteRows = append(deleteRows, backIndexRow)
|
|
return deleteRows
|
|
}
|
|
|
|
func (udc *UpsideDownCouch) backIndexRowForDoc(kvreader store.KVReader, docID string) (*BackIndexRow, error) {
|
|
// use a temporary row structure to build key
|
|
tempRow := &BackIndexRow{
|
|
doc: []byte(docID),
|
|
}
|
|
|
|
keyBuf := GetRowBuffer()
|
|
if tempRow.KeySize() > len(keyBuf) {
|
|
keyBuf = make([]byte, 2*tempRow.KeySize())
|
|
}
|
|
defer PutRowBuffer(keyBuf)
|
|
keySize, err := tempRow.KeyTo(keyBuf)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
value, err := kvreader.Get(keyBuf[:keySize])
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if value == nil {
|
|
return nil, nil
|
|
}
|
|
backIndexRow, err := NewBackIndexRowKV(keyBuf[:keySize], value)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return backIndexRow, nil
|
|
}
|
|
|
|
func (udc *UpsideDownCouch) backIndexRowsForBatch(kvreader store.KVReader, batch *index.Batch) (map[string]*BackIndexRow, error) {
|
|
// FIXME faster to order the ids and scan sequentially
|
|
// for now just get it working
|
|
rv := make(map[string]*BackIndexRow, 0)
|
|
for docID := range batch.IndexOps {
|
|
backIndexRow, err := udc.backIndexRowForDoc(kvreader, docID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
rv[docID] = backIndexRow
|
|
}
|
|
return rv, nil
|
|
}
|
|
|
|
func decodeFieldType(typ byte, name string, pos []uint64, value []byte) document.Field {
|
|
switch typ {
|
|
case 't':
|
|
return document.NewTextField(name, pos, value)
|
|
case 'n':
|
|
return document.NewNumericFieldFromBytes(name, pos, value)
|
|
case 'd':
|
|
return document.NewDateTimeFieldFromBytes(name, pos, value)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func frequencyFromTokenFreq(tf *analysis.TokenFreq) int {
|
|
return len(tf.Locations)
|
|
}
|
|
|
|
func (udc *UpsideDownCouch) termVectorsFromTokenFreq(field uint16, tf *analysis.TokenFreq) ([]*TermVector, []index.IndexRow) {
|
|
rv := make([]*TermVector, len(tf.Locations))
|
|
newFieldRows := make([]index.IndexRow, 0)
|
|
|
|
for i, l := range tf.Locations {
|
|
var newFieldRow *FieldRow
|
|
fieldIndex := field
|
|
if l.Field != "" {
|
|
// lookup correct field
|
|
fieldIndex, newFieldRow = udc.fieldIndexOrNewRow(l.Field)
|
|
if newFieldRow != nil {
|
|
newFieldRows = append(newFieldRows, newFieldRow)
|
|
}
|
|
}
|
|
tv := TermVector{
|
|
field: fieldIndex,
|
|
arrayPositions: l.ArrayPositions,
|
|
pos: uint64(l.Position),
|
|
start: uint64(l.Start),
|
|
end: uint64(l.End),
|
|
}
|
|
rv[i] = &tv
|
|
}
|
|
|
|
return rv, newFieldRows
|
|
}
|
|
|
|
func (udc *UpsideDownCouch) termFieldVectorsFromTermVectors(in []*TermVector) []*index.TermFieldVector {
|
|
rv := make([]*index.TermFieldVector, len(in))
|
|
|
|
for i, tv := range in {
|
|
fieldName := udc.fieldCache.FieldIndexed(tv.field)
|
|
tfv := index.TermFieldVector{
|
|
Field: fieldName,
|
|
ArrayPositions: tv.arrayPositions,
|
|
Pos: tv.pos,
|
|
Start: tv.start,
|
|
End: tv.end,
|
|
}
|
|
rv[i] = &tfv
|
|
}
|
|
return rv
|
|
}
|
|
|
|
func (udc *UpsideDownCouch) Batch(batch *index.Batch) (err error) {
|
|
analysisStart := time.Now()
|
|
resultChan := make(chan *index.AnalysisResult)
|
|
|
|
var numUpdates uint64
|
|
for _, doc := range batch.IndexOps {
|
|
if doc != nil {
|
|
numUpdates++
|
|
}
|
|
}
|
|
|
|
var detectedUnsafeMutex sync.RWMutex
|
|
detectedUnsafe := false
|
|
|
|
go func() {
|
|
sofar := uint64(0)
|
|
for _, doc := range batch.IndexOps {
|
|
if doc != nil {
|
|
sofar++
|
|
if sofar > numUpdates {
|
|
detectedUnsafeMutex.Lock()
|
|
detectedUnsafe = true
|
|
detectedUnsafeMutex.Unlock()
|
|
return
|
|
}
|
|
aw := index.NewAnalysisWork(udc, doc, resultChan)
|
|
// put the work on the queue
|
|
udc.analysisQueue.Queue(aw)
|
|
}
|
|
}
|
|
}()
|
|
|
|
newRowsMap := make(map[string][]index.IndexRow)
|
|
// wait for the result
|
|
var itemsDeQueued uint64
|
|
for itemsDeQueued < numUpdates {
|
|
result := <-resultChan
|
|
newRowsMap[result.DocID] = result.Rows
|
|
itemsDeQueued++
|
|
}
|
|
close(resultChan)
|
|
|
|
detectedUnsafeMutex.RLock()
|
|
defer detectedUnsafeMutex.RUnlock()
|
|
if detectedUnsafe {
|
|
return UnsafeBatchUseDetected
|
|
}
|
|
|
|
atomic.AddUint64(&udc.stats.analysisTime, uint64(time.Since(analysisStart)))
|
|
|
|
indexStart := time.Now()
|
|
|
|
udc.writeMutex.Lock()
|
|
defer udc.writeMutex.Unlock()
|
|
|
|
// open a reader for backindex lookup
|
|
var kvreader store.KVReader
|
|
kvreader, err = udc.store.Reader()
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
// first lookup all the back index rows
|
|
var backIndexRows map[string]*BackIndexRow
|
|
backIndexRows, err = udc.backIndexRowsForBatch(kvreader, batch)
|
|
if err != nil {
|
|
_ = kvreader.Close()
|
|
return
|
|
}
|
|
|
|
err = kvreader.Close()
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
// start a writer for this batch
|
|
var kvwriter store.KVWriter
|
|
kvwriter, err = udc.store.Writer()
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
// prepare a list of rows
|
|
addRows := make([]UpsideDownCouchRow, 0)
|
|
updateRows := make([]UpsideDownCouchRow, 0)
|
|
deleteRows := make([]UpsideDownCouchRow, 0)
|
|
|
|
docsAdded := uint64(0)
|
|
docsDeleted := uint64(0)
|
|
for docID, doc := range batch.IndexOps {
|
|
backIndexRow := backIndexRows[docID]
|
|
if doc == nil && backIndexRow != nil {
|
|
// delete
|
|
deleteRows = udc.deleteSingle(docID, backIndexRow, deleteRows)
|
|
docsDeleted++
|
|
} else if doc != nil {
|
|
addRows, updateRows, deleteRows = udc.mergeOldAndNew(backIndexRow, newRowsMap[docID], addRows, updateRows, deleteRows)
|
|
if backIndexRow == nil {
|
|
docsAdded++
|
|
}
|
|
}
|
|
}
|
|
|
|
// add the internal ops
|
|
for internalKey, internalValue := range batch.InternalOps {
|
|
if internalValue == nil {
|
|
// delete
|
|
deleteInternalRow := NewInternalRow([]byte(internalKey), nil)
|
|
deleteRows = append(deleteRows, deleteInternalRow)
|
|
} else {
|
|
updateInternalRow := NewInternalRow([]byte(internalKey), internalValue)
|
|
updateRows = append(updateRows, updateInternalRow)
|
|
}
|
|
}
|
|
|
|
err = udc.batchRows(kvwriter, addRows, updateRows, deleteRows)
|
|
if err != nil {
|
|
_ = kvwriter.Close()
|
|
atomic.AddUint64(&udc.stats.errors, 1)
|
|
return
|
|
}
|
|
|
|
err = kvwriter.Close()
|
|
atomic.AddUint64(&udc.stats.indexTime, uint64(time.Since(indexStart)))
|
|
|
|
if err == nil {
|
|
udc.m.Lock()
|
|
udc.docCount += docsAdded
|
|
udc.docCount -= docsDeleted
|
|
udc.m.Unlock()
|
|
atomic.AddUint64(&udc.stats.updates, numUpdates)
|
|
atomic.AddUint64(&udc.stats.deletes, docsDeleted)
|
|
atomic.AddUint64(&udc.stats.batches, 1)
|
|
} else {
|
|
atomic.AddUint64(&udc.stats.errors, 1)
|
|
}
|
|
return
|
|
}
|
|
|
|
func (udc *UpsideDownCouch) SetInternal(key, val []byte) (err error) {
|
|
internalRow := NewInternalRow(key, val)
|
|
udc.writeMutex.Lock()
|
|
defer udc.writeMutex.Unlock()
|
|
var writer store.KVWriter
|
|
writer, err = udc.store.Writer()
|
|
if err != nil {
|
|
return
|
|
}
|
|
defer func() {
|
|
if cerr := writer.Close(); err == nil && cerr != nil {
|
|
err = cerr
|
|
}
|
|
}()
|
|
|
|
batch := writer.NewBatch()
|
|
batch.Set(internalRow.Key(), internalRow.Value())
|
|
|
|
return writer.ExecuteBatch(batch)
|
|
}
|
|
|
|
func (udc *UpsideDownCouch) DeleteInternal(key []byte) (err error) {
|
|
internalRow := NewInternalRow(key, nil)
|
|
udc.writeMutex.Lock()
|
|
defer udc.writeMutex.Unlock()
|
|
var writer store.KVWriter
|
|
writer, err = udc.store.Writer()
|
|
if err != nil {
|
|
return
|
|
}
|
|
defer func() {
|
|
if cerr := writer.Close(); err == nil && cerr != nil {
|
|
err = cerr
|
|
}
|
|
}()
|
|
|
|
batch := writer.NewBatch()
|
|
batch.Delete(internalRow.Key())
|
|
return writer.ExecuteBatch(batch)
|
|
}
|
|
|
|
func (udc *UpsideDownCouch) Reader() (index.IndexReader, error) {
|
|
kvr, err := udc.store.Reader()
|
|
if err != nil {
|
|
return nil, fmt.Errorf("error opening store reader: %v", err)
|
|
}
|
|
udc.m.RLock()
|
|
defer udc.m.RUnlock()
|
|
return &IndexReader{
|
|
index: udc,
|
|
kvreader: kvr,
|
|
docCount: udc.docCount,
|
|
}, nil
|
|
}
|
|
|
|
func (udc *UpsideDownCouch) Stats() json.Marshaler {
|
|
return udc.stats
|
|
}
|
|
|
|
func (udc *UpsideDownCouch) fieldIndexOrNewRow(name string) (uint16, *FieldRow) {
|
|
index, existed := udc.fieldCache.FieldNamed(name, true)
|
|
if !existed {
|
|
return index, NewFieldRow(uint16(index), name)
|
|
}
|
|
return index, nil
|
|
}
|
|
|
|
func init() {
|
|
registry.RegisterIndexType(Name, NewUpsideDownCouch)
|
|
}
|