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bleve/utils/bleve_dump/main.go
Patrick Mezard bc977048f7 bleve_dump: improve online help and error handling
I was expecting:

  $ bleve_dump -index /index -docID 123 -fields html

to print only the terms for "html" field in specified document. The
command now detects extra arguments and flag collisions.
2015-10-26 10:37:13 +01:00

95 lines
2.5 KiB
Go

// Copyright (c) 2014 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 main
import (
"encoding/json"
"flag"
"fmt"
"log"
"os"
"strings"
"github.com/blevesearch/bleve"
_ "github.com/blevesearch/bleve/config"
_ "github.com/blevesearch/bleve/index/store/metrics"
"github.com/blevesearch/bleve/index/upside_down"
)
var indexPath = flag.String("index", "", "index path")
var fieldsOnly = flag.Bool("fields", false, "print only field definitions")
var docID = flag.String("docID", "", "print only rows related to specified document")
var mappingOnly = flag.Bool("mapping", false, "print only index mappings")
func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, strings.TrimSpace(`
bleve_dump prints the properties and binary representations of all rows in the
index specified by -index.
`)+"\n\n")
flag.PrintDefaults()
}
flag.Parse()
if len(flag.Args()) > 0 {
log.Fatalf("unexpected argument '%s', use -help to see possible options",
flag.Args()[0])
}
if *indexPath == "" {
log.Fatal("specify index to dump")
}
index, err := bleve.Open(*indexPath)
if err != nil {
log.Fatal(err)
}
defer func() {
cerr := index.Close()
if cerr != nil {
log.Fatalf("error closing index: %v", err)
}
}()
if *mappingOnly {
if *docID != "" || *fieldsOnly {
log.Fatal("-mapping cannot be used with -docID or -fields")
}
mapping := index.Mapping()
jsonBytes, err := json.MarshalIndent(mapping, "", " ")
if err != nil {
log.Fatal(err)
}
fmt.Printf("%s\n", jsonBytes)
return
}
var dumpChan chan interface{}
if *docID != "" {
if *fieldsOnly {
log.Fatal("-docID cannot be used with -fields")
}
dumpChan = index.DumpDoc(*docID)
} else if *fieldsOnly {
dumpChan = index.DumpFields()
} else {
dumpChan = index.DumpAll()
}
for rowOrErr := range dumpChan {
switch rowOrErr := rowOrErr.(type) {
case error:
log.Printf("error dumping: %v", rowOrErr)
case upside_down.UpsideDownCouchRow:
fmt.Printf("%v\n", rowOrErr)
fmt.Printf("Key: % -100x\nValue: % -100x\n\n", rowOrErr.Key(), rowOrErr.Value())
}
}
}