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index_document.go
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/
index_document.go
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/* Copyright 2022 Zinc Labs Inc. and Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package core
import (
"strings"
"time"
"github.com/zincsearch/zincsearch/pkg/errors"
"github.com/zincsearch/zincsearch/pkg/meta"
"github.com/zincsearch/zincsearch/pkg/zutils/json"
)
// CreateDocument inserts or updates a document in the zinc index
func (index *Index) CreateDocument(docID string, doc map[string]interface{}, update bool) error {
// metrics
IncrMetricStatsByIndex(index.GetName(), "wal_request")
// check WAL
shard := index.GetShardByDocID(docID)
if err := shard.OpenWAL(); err != nil {
return err
}
secondShardID := ShardIDNeedLatest
if update {
secondShardID = ShardIDNeedUpdate
}
data, err := shard.CheckDocument(docID, doc, update, secondShardID)
if err != nil {
return err
}
return shard.wal.Write(data)
}
// GetDocument get a document in the zinc index
func (index *Index) GetDocument(docID string) (*meta.Hit, error) {
// check WAL
shard := index.GetShardByDocID(docID)
if err := shard.OpenWAL(); err != nil {
return nil, err
}
return shard.FindDocumentByDocID(docID)
}
// UpdateDocument updates a document in the zinc index
func (index *Index) UpdateDocument(docID string, doc map[string]interface{}, insert bool) error {
// metrics
IncrMetricStatsByIndex(index.GetName(), "wal_request")
// check WAL
shard := index.GetShardByDocID(docID)
if err := shard.OpenWAL(); err != nil {
return err
}
update := true
secondShardID, err := shard.FindShardByDocID(docID)
if err != nil {
if insert && err == errors.ErrorIDNotFound {
update = false
} else {
return err
}
}
data, err := shard.CheckDocument(docID, doc, update, secondShardID)
if err != nil {
return err
}
return shard.wal.Write(data)
}
// DeleteDocument deletes a document in the zinc index
func (index *Index) DeleteDocument(docID string) error {
// metrics
IncrMetricStatsByIndex(index.GetName(), "wal_request")
// check WAL
shard := index.GetShardByDocID(docID)
if err := shard.OpenWAL(); err != nil {
return err
}
secondShardID, err := shard.FindShardByDocID(docID)
if err != nil {
return err
}
data := map[string]interface{}{
meta.IDFieldName: docID,
meta.ActionFieldName: meta.ActionTypeDelete,
meta.ShardFieldName: secondShardID,
}
jstr, err := json.Marshal(data)
if err != nil {
return err
}
return shard.wal.Write(jstr)
}
// isDateProperty returns true if the given value matches the default date format.
func isDateProperty(value string) (string, bool) {
layout := detectTimeLayout(value)
if layout == "" {
return "", false
}
_, err := time.Parse(layout, value)
return layout, err == nil
}
// detectTimeLayout tries to figure out the correct layout of the input date.
func detectTimeLayout(value string) string {
layout := ""
switch {
case len(value) == 19 && strings.Index(value, " ") == 10:
layout = "2006-01-02 15:04:05"
case len(value) == 19 && strings.Index(value, "T") == 10:
layout = "2006-01-02T15:04:05"
case len(value) == 25 && strings.Index(value, "T") == 10:
layout = time.RFC3339
case len(value) == 29 && strings.Index(value, "T") == 10 && strings.Index(value, ".") == 19:
layout = "2006-01-02T15:04:05.999Z07:00"
}
return layout
}