Switch from Godep to go vendoring
This commit is contained in:
Ken-Håvard Lieng
parent
6b37713bc0
commit
cd317761c5
1504 changed files with 263076 additions and 34441 deletions
739
vendor/github.com/blevesearch/bleve/index_impl.go
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vendored
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739
vendor/github.com/blevesearch/bleve/index_impl.go
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vendored
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@ -0,0 +1,739 @@
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// 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 bleve
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import (
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"encoding/json"
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"fmt"
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"os"
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"sync"
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"sync/atomic"
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"time"
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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/index/upside_down"
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"github.com/blevesearch/bleve/registry"
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"github.com/blevesearch/bleve/search"
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"github.com/blevesearch/bleve/search/collectors"
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"github.com/blevesearch/bleve/search/facets"
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)
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type indexImpl struct {
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path string
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meta *indexMeta
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s store.KVStore
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i index.Index
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m *IndexMapping
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mutex sync.RWMutex
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open bool
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stats *IndexStat
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}
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const storePath = "store"
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var mappingInternalKey = []byte("_mapping")
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func indexStorePath(path string) string {
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return path + string(os.PathSeparator) + storePath
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}
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func newMemIndex(mapping *IndexMapping) (*indexImpl, error) {
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rv := indexImpl{
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path: "",
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m: mapping,
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meta: newIndexMeta("mem", nil),
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stats: &IndexStat{},
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}
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storeConstructor := registry.KVStoreConstructorByName(rv.meta.Storage)
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if storeConstructor == nil {
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return nil, ErrorUnknownStorageType
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}
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// now open the store
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var err error
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rv.s, err = storeConstructor(nil)
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if err != nil {
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return nil, err
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}
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// open the index
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rv.i = upside_down.NewUpsideDownCouch(rv.s, Config.analysisQueue)
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err = rv.i.Open()
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if err != nil {
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return nil, err
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}
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rv.stats.indexStat = rv.i.Stats()
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// now persist the mapping
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mappingBytes, err := json.Marshal(mapping)
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if err != nil {
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return nil, err
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}
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err = rv.i.SetInternal(mappingInternalKey, mappingBytes)
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if err != nil {
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return nil, err
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}
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// mark the index as open
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rv.mutex.Lock()
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defer rv.mutex.Unlock()
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rv.open = true
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return &rv, nil
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}
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func newIndexUsing(path string, mapping *IndexMapping, kvstore string, kvconfig map[string]interface{}) (*indexImpl, error) {
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// first validate the mapping
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err := mapping.validate()
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if err != nil {
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return nil, err
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}
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if path == "" {
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return newMemIndex(mapping)
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}
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if kvconfig == nil {
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kvconfig = map[string]interface{}{}
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}
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rv := indexImpl{
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path: path,
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m: mapping,
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meta: newIndexMeta(kvstore, kvconfig),
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stats: &IndexStat{},
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}
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storeConstructor := registry.KVStoreConstructorByName(rv.meta.Storage)
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if storeConstructor == nil {
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return nil, ErrorUnknownStorageType
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}
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// at this point there is hope that we can be successful, so save index meta
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err = rv.meta.Save(path)
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if err != nil {
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return nil, err
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}
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kvconfig["create_if_missing"] = true
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kvconfig["error_if_exists"] = true
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kvconfig["path"] = indexStorePath(path)
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// now create the store
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rv.s, err = storeConstructor(kvconfig)
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if err != nil {
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return nil, err
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}
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// open the index
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rv.i = upside_down.NewUpsideDownCouch(rv.s, Config.analysisQueue)
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err = rv.i.Open()
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if err != nil {
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return nil, err
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}
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rv.stats.indexStat = rv.i.Stats()
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// now persist the mapping
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mappingBytes, err := json.Marshal(mapping)
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if err != nil {
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return nil, err
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}
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err = rv.i.SetInternal(mappingInternalKey, mappingBytes)
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if err != nil {
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return nil, err
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}
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// mark the index as open
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rv.mutex.Lock()
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defer rv.mutex.Unlock()
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rv.open = true
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return &rv, nil
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}
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func openIndexUsing(path string, runtimeConfig map[string]interface{}) (rv *indexImpl, err error) {
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rv = &indexImpl{
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path: path,
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stats: &IndexStat{},
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}
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rv.meta, err = openIndexMeta(path)
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if err != nil {
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return nil, err
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}
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storeConstructor := registry.KVStoreConstructorByName(rv.meta.Storage)
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if storeConstructor == nil {
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return nil, ErrorUnknownStorageType
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}
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storeConfig := rv.meta.Config
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if storeConfig == nil {
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storeConfig = map[string]interface{}{}
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}
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storeConfig["path"] = indexStorePath(path)
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storeConfig["create_if_missing"] = false
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storeConfig["error_if_exists"] = false
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for rck, rcv := range runtimeConfig {
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storeConfig[rck] = rcv
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}
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// now open the store
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rv.s, err = storeConstructor(storeConfig)
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if err != nil {
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return nil, err
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}
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// open the index
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rv.i = upside_down.NewUpsideDownCouch(rv.s, Config.analysisQueue)
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err = rv.i.Open()
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if err != nil {
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return nil, err
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}
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rv.stats.indexStat = rv.i.Stats()
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// now load the mapping
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indexReader, err := rv.i.Reader()
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if err != nil {
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return nil, err
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}
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defer func() {
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if cerr := indexReader.Close(); cerr != nil && err == nil {
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err = cerr
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}
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}()
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mappingBytes, err := indexReader.GetInternal(mappingInternalKey)
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if err != nil {
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return nil, err
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}
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var im IndexMapping
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err = json.Unmarshal(mappingBytes, &im)
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if err != nil {
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return nil, err
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}
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// mark the index as open
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rv.mutex.Lock()
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defer rv.mutex.Unlock()
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rv.open = true
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// validate the mapping
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err = im.validate()
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if err != nil {
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// note even if the mapping is invalid
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// we still return an open usable index
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return rv, err
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}
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rv.m = &im
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return rv, err
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}
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// Advanced returns implementation internals
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// necessary ONLY for advanced usage.
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func (i *indexImpl) Advanced() (index.Index, store.KVStore, error) {
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return i.i, i.s, nil
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}
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// Mapping returns the IndexMapping in use by this
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// Index.
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func (i *indexImpl) Mapping() *IndexMapping {
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return i.m
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}
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// Index the object with the specified identifier.
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// The IndexMapping for this index will determine
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// how the object is indexed.
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func (i *indexImpl) Index(id string, data interface{}) error {
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i.mutex.RLock()
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defer i.mutex.RUnlock()
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if !i.open {
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return ErrorIndexClosed
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}
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doc := document.NewDocument(id)
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err := i.m.mapDocument(doc, data)
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if err != nil {
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return err
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}
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err = i.i.Update(doc)
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if err != nil {
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return err
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}
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return nil
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}
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// Delete entries for the specified identifier from
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// the index.
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func (i *indexImpl) Delete(id string) error {
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i.mutex.RLock()
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defer i.mutex.RUnlock()
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if !i.open {
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return ErrorIndexClosed
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}
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err := i.i.Delete(id)
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if err != nil {
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return err
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}
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return nil
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}
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// Batch executes multiple Index and Delete
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// operations at the same time. There are often
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// significant performance benefits when performing
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// operations in a batch.
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func (i *indexImpl) Batch(b *Batch) error {
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i.mutex.RLock()
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defer i.mutex.RUnlock()
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if !i.open {
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return ErrorIndexClosed
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}
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return i.i.Batch(b.internal)
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}
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// Document is used to find the values of all the
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// stored fields for a document in the index. These
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// stored fields are put back into a Document object
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// and returned.
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func (i *indexImpl) Document(id string) (doc *document.Document, err error) {
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i.mutex.RLock()
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defer i.mutex.RUnlock()
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if !i.open {
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return nil, ErrorIndexClosed
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}
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indexReader, err := i.i.Reader()
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if err != nil {
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return nil, err
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}
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defer func() {
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if cerr := indexReader.Close(); err == nil && cerr != nil {
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err = cerr
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}
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}()
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doc, err = indexReader.Document(id)
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if err != nil {
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return nil, err
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}
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return doc, nil
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}
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// DocCount returns the number of documents in the
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// index.
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func (i *indexImpl) DocCount() (uint64, error) {
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i.mutex.RLock()
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defer i.mutex.RUnlock()
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if !i.open {
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return 0, ErrorIndexClosed
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}
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return i.i.DocCount()
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}
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// Search executes a search request operation.
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// Returns a SearchResult object or an error.
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func (i *indexImpl) Search(req *SearchRequest) (sr *SearchResult, err error) {
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i.mutex.RLock()
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defer i.mutex.RUnlock()
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searchStart := time.Now()
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if !i.open {
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return nil, ErrorIndexClosed
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}
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collector := collectors.NewTopScorerSkipCollector(req.Size, req.From)
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// open a reader for this search
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indexReader, err := i.i.Reader()
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if err != nil {
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return nil, fmt.Errorf("error opening index reader %v", err)
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}
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defer func() {
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if cerr := indexReader.Close(); err == nil && cerr != nil {
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err = cerr
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}
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}()
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searcher, err := req.Query.Searcher(indexReader, i.m, req.Explain)
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if err != nil {
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return nil, err
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}
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defer func() {
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if serr := searcher.Close(); err == nil && serr != nil {
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err = serr
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}
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}()
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if req.Facets != nil {
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facetsBuilder := search.NewFacetsBuilder(indexReader)
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for facetName, facetRequest := range req.Facets {
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if facetRequest.NumericRanges != nil {
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// build numeric range facet
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facetBuilder := facets.NewNumericFacetBuilder(facetRequest.Field, facetRequest.Size)
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for _, nr := range facetRequest.NumericRanges {
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facetBuilder.AddRange(nr.Name, nr.Min, nr.Max)
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}
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facetsBuilder.Add(facetName, facetBuilder)
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} else if facetRequest.DateTimeRanges != nil {
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// build date range facet
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facetBuilder := facets.NewDateTimeFacetBuilder(facetRequest.Field, facetRequest.Size)
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dateTimeParser := i.m.dateTimeParserNamed(i.m.DefaultDateTimeParser)
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for _, dr := range facetRequest.DateTimeRanges {
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dr.ParseDates(dateTimeParser)
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facetBuilder.AddRange(dr.Name, dr.Start, dr.End)
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}
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facetsBuilder.Add(facetName, facetBuilder)
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} else {
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// build terms facet
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facetBuilder := facets.NewTermsFacetBuilder(facetRequest.Field, facetRequest.Size)
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facetsBuilder.Add(facetName, facetBuilder)
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}
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}
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collector.SetFacetsBuilder(facetsBuilder)
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}
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err = collector.Collect(searcher)
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if err != nil {
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return nil, err
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}
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hits := collector.Results()
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if req.Highlight != nil {
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// get the right highlighter
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highlighter, err := Config.Cache.HighlighterNamed(Config.DefaultHighlighter)
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if err != nil {
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return nil, err
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}
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if req.Highlight.Style != nil {
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highlighter, err = Config.Cache.HighlighterNamed(*req.Highlight.Style)
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if err != nil {
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return nil, err
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}
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}
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if highlighter == nil {
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return nil, fmt.Errorf("no highlighter named `%s` registered", *req.Highlight.Style)
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}
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for _, hit := range hits {
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doc, err := indexReader.Document(hit.ID)
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if err == nil {
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highlightFields := req.Highlight.Fields
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if highlightFields == nil {
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// add all fields with matches
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highlightFields = make([]string, 0, len(hit.Locations))
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for k := range hit.Locations {
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highlightFields = append(highlightFields, k)
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}
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}
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for _, hf := range highlightFields {
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highlighter.BestFragmentsInField(hit, doc, hf, 1)
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}
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}
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}
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}
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if len(req.Fields) > 0 {
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for _, hit := range hits {
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// FIXME avoid loading doc second time
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// if we already loaded it for highlighting
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doc, err := indexReader.Document(hit.ID)
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if err == nil {
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for _, f := range req.Fields {
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for _, docF := range doc.Fields {
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if f == "*" || docF.Name() == f {
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var value interface{}
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switch docF := docF.(type) {
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case *document.TextField:
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value = string(docF.Value())
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case *document.NumericField:
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num, err := docF.Number()
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if err == nil {
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value = num
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}
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case *document.DateTimeField:
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datetime, err := docF.DateTime()
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if err == nil {
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value = datetime.Format(time.RFC3339)
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}
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}
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if value != nil {
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hit.AddFieldValue(docF.Name(), value)
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}
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}
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}
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}
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}
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}
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}
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atomic.AddUint64(&i.stats.searches, 1)
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searchDuration := time.Since(searchStart)
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atomic.AddUint64(&i.stats.searchTime, uint64(searchDuration))
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if searchDuration > Config.SlowSearchLogThreshold {
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logger.Printf("slow search took %s - %v", searchDuration, req)
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}
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return &SearchResult{
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Request: req,
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Hits: hits,
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Total: collector.Total(),
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MaxScore: collector.MaxScore(),
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Took: searchDuration,
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Facets: collector.FacetResults(),
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}, nil
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}
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// Fields returns the name of all the fields this
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// Index has operated on.
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func (i *indexImpl) Fields() (fields []string, err error) {
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i.mutex.RLock()
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defer i.mutex.RUnlock()
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if !i.open {
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return nil, ErrorIndexClosed
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}
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indexReader, err := i.i.Reader()
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if err != nil {
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return nil, err
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}
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defer func() {
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if cerr := indexReader.Close(); err == nil && cerr != nil {
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err = cerr
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}
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}()
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fields, err = indexReader.Fields()
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if err != nil {
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return nil, err
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}
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return fields, nil
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}
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func (i *indexImpl) FieldDict(field string) (index.FieldDict, error) {
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i.mutex.RLock()
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if !i.open {
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i.mutex.RUnlock()
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return nil, ErrorIndexClosed
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}
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|
||||
indexReader, err := i.i.Reader()
|
||||
if err != nil {
|
||||
i.mutex.RUnlock()
|
||||
return nil, err
|
||||
}
|
||||
|
||||
fieldDict, err := indexReader.FieldDict(field)
|
||||
if err != nil {
|
||||
i.mutex.RUnlock()
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &indexImplFieldDict{
|
||||
index: i,
|
||||
indexReader: indexReader,
|
||||
fieldDict: fieldDict,
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (i *indexImpl) FieldDictRange(field string, startTerm []byte, endTerm []byte) (index.FieldDict, error) {
|
||||
i.mutex.RLock()
|
||||
|
||||
if !i.open {
|
||||
i.mutex.RUnlock()
|
||||
return nil, ErrorIndexClosed
|
||||
}
|
||||
|
||||
indexReader, err := i.i.Reader()
|
||||
if err != nil {
|
||||
i.mutex.RUnlock()
|
||||
return nil, err
|
||||
}
|
||||
|
||||
fieldDict, err := indexReader.FieldDictRange(field, startTerm, endTerm)
|
||||
if err != nil {
|
||||
i.mutex.RUnlock()
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &indexImplFieldDict{
|
||||
index: i,
|
||||
indexReader: indexReader,
|
||||
fieldDict: fieldDict,
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (i *indexImpl) FieldDictPrefix(field string, termPrefix []byte) (index.FieldDict, error) {
|
||||
i.mutex.RLock()
|
||||
|
||||
if !i.open {
|
||||
i.mutex.RUnlock()
|
||||
return nil, ErrorIndexClosed
|
||||
}
|
||||
|
||||
indexReader, err := i.i.Reader()
|
||||
if err != nil {
|
||||
i.mutex.RUnlock()
|
||||
return nil, err
|
||||
}
|
||||
|
||||
fieldDict, err := indexReader.FieldDictPrefix(field, termPrefix)
|
||||
if err != nil {
|
||||
i.mutex.RUnlock()
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &indexImplFieldDict{
|
||||
index: i,
|
||||
indexReader: indexReader,
|
||||
fieldDict: fieldDict,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// DumpAll writes all index rows to a channel.
|
||||
// INTERNAL: do not rely on this function, it is
|
||||
// only intended to be used by the debug utilities
|
||||
func (i *indexImpl) DumpAll() chan interface{} {
|
||||
i.mutex.RLock()
|
||||
defer i.mutex.RUnlock()
|
||||
|
||||
if !i.open {
|
||||
return nil
|
||||
}
|
||||
|
||||
return i.i.DumpAll()
|
||||
}
|
||||
|
||||
// DumpFields writes all field rows in the index
|
||||
// to a channel.
|
||||
// INTERNAL: do not rely on this function, it is
|
||||
// only intended to be used by the debug utilities
|
||||
func (i *indexImpl) DumpFields() chan interface{} {
|
||||
i.mutex.RLock()
|
||||
defer i.mutex.RUnlock()
|
||||
|
||||
if !i.open {
|
||||
return nil
|
||||
}
|
||||
return i.i.DumpFields()
|
||||
}
|
||||
|
||||
// DumpDoc writes all rows in the index associated
|
||||
// with the specified identifier to a channel.
|
||||
// INTERNAL: do not rely on this function, it is
|
||||
// only intended to be used by the debug utilities
|
||||
func (i *indexImpl) DumpDoc(id string) chan interface{} {
|
||||
i.mutex.RLock()
|
||||
defer i.mutex.RUnlock()
|
||||
|
||||
if !i.open {
|
||||
return nil
|
||||
}
|
||||
return i.i.DumpDoc(id)
|
||||
}
|
||||
|
||||
func (i *indexImpl) Close() error {
|
||||
i.mutex.Lock()
|
||||
defer i.mutex.Unlock()
|
||||
|
||||
i.open = false
|
||||
return i.i.Close()
|
||||
}
|
||||
|
||||
func (i *indexImpl) Stats() *IndexStat {
|
||||
return i.stats
|
||||
}
|
||||
|
||||
func (i *indexImpl) GetInternal(key []byte) (val []byte, err error) {
|
||||
i.mutex.RLock()
|
||||
defer i.mutex.RUnlock()
|
||||
|
||||
if !i.open {
|
||||
return nil, ErrorIndexClosed
|
||||
}
|
||||
|
||||
reader, err := i.i.Reader()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer func() {
|
||||
if cerr := reader.Close(); err == nil && cerr != nil {
|
||||
err = cerr
|
||||
}
|
||||
}()
|
||||
|
||||
val, err = reader.GetInternal(key)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return val, nil
|
||||
}
|
||||
|
||||
func (i *indexImpl) SetInternal(key, val []byte) error {
|
||||
i.mutex.RLock()
|
||||
defer i.mutex.RUnlock()
|
||||
|
||||
if !i.open {
|
||||
return ErrorIndexClosed
|
||||
}
|
||||
|
||||
return i.i.SetInternal(key, val)
|
||||
}
|
||||
|
||||
func (i *indexImpl) DeleteInternal(key []byte) error {
|
||||
i.mutex.RLock()
|
||||
defer i.mutex.RUnlock()
|
||||
|
||||
if !i.open {
|
||||
return ErrorIndexClosed
|
||||
}
|
||||
|
||||
return i.i.DeleteInternal(key)
|
||||
}
|
||||
|
||||
// NewBatch creates a new empty batch.
|
||||
func (i *indexImpl) NewBatch() *Batch {
|
||||
return &Batch{
|
||||
index: i,
|
||||
internal: index.NewBatch(),
|
||||
}
|
||||
}
|
||||
|
||||
type indexImplFieldDict struct {
|
||||
index *indexImpl
|
||||
indexReader index.IndexReader
|
||||
fieldDict index.FieldDict
|
||||
}
|
||||
|
||||
func (f *indexImplFieldDict) Next() (*index.DictEntry, error) {
|
||||
return f.fieldDict.Next()
|
||||
}
|
||||
|
||||
func (f *indexImplFieldDict) Close() error {
|
||||
defer f.index.mutex.RUnlock()
|
||||
err := f.fieldDict.Close()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return f.indexReader.Close()
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue