forked from blevesearch/bleve
/
check.go
131 lines (113 loc) · 3.17 KB
/
check.go
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// Copyright © 2016 Couchbase, Inc.
//
// 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 cmd
import (
"fmt"
"log"
"github.com/blevesearch/bleve"
"github.com/spf13/cobra"
)
var checkFieldName string
var checkCount int
// checkCmd represents the check command
var checkCmd = &cobra.Command{
Use: "check [index path]",
Short: "checks the contents of the index",
Long: `The check command will perform consistency checks on the index.`,
RunE: func(cmd *cobra.Command, args []string) error {
var fieldNames []string
var err error
if checkFieldName == "" {
fieldNames, err = idx.Fields()
if err != nil {
return err
}
} else {
fieldNames = []string{checkFieldName}
}
fmt.Printf("checking fields: %v\n", fieldNames)
totalProblems := 0
for _, fieldName := range fieldNames {
fmt.Printf("checking field: '%s'\n", fieldName)
problems, err := checkField(idx, fieldName)
if err != nil {
log.Fatal(err)
}
totalProblems += problems
}
if totalProblems != 0 {
return fmt.Errorf("found %d total problems\n", totalProblems)
}
return nil
},
}
func checkField(index bleve.Index, fieldName string) (int, error) {
termDictionary, err := getDictionary(index, fieldName)
if err != nil {
return 0, err
}
fmt.Printf("field contains %d terms\n", len(termDictionary))
numTested := 0
numProblems := 0
for term, count := range termDictionary {
fmt.Printf("checked %d terms\r", numTested)
if checkCount > 0 && numTested >= checkCount {
break
}
tq := bleve.NewTermQuery(term)
tq.SetField(fieldName)
req := bleve.NewSearchRequest(tq)
req.Size = 0
res, err := index.Search(req)
if err != nil {
return 0, err
}
if res.Total != count {
fmt.Printf("unexpected mismatch for term '%s', dictionary %d, search hits %d\n", term, count, res.Total)
numProblems++
}
numTested++
}
fmt.Printf("done checking %d terms, found %d problems\n", numTested, numProblems)
return numProblems, nil
}
func getDictionary(index bleve.Index, field string) (map[string]uint64, error) {
rv := make(map[string]uint64)
i, _, err := index.Advanced()
if err != nil {
log.Fatal(err)
}
r, err := i.Reader()
if err != nil {
log.Fatal(err)
}
d, err := r.FieldDict(field)
if err != nil {
log.Fatal(err)
}
de, err := d.Next()
for err == nil && de != nil {
rv[de.Term] = de.Count
de, err = d.Next()
}
if err != nil {
return nil, err
}
return rv, nil
}
func init() {
RootCmd.AddCommand(checkCmd)
checkCmd.Flags().StringVarP(&checkFieldName, "field", "f", "", "Restrict check to the specified field name, by default check all fields.")
checkCmd.Flags().IntVarP(&checkCount, "count", "c", 100, "Check this many terms, default 100.")
}