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// 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 http
import (
"fmt"
"net/http"
"github.com/blevesearch/bleve/index/upsidedown"
)
// DebugDocumentHandler allows you to debug the index content
// for a given document id.
type DebugDocumentHandler struct {
defaultIndexName string
IndexNameLookup varLookupFunc
DocIDLookup varLookupFunc
}
func NewDebugDocumentHandler(defaultIndexName string) *DebugDocumentHandler {
return &DebugDocumentHandler{
defaultIndexName: defaultIndexName,
}
}
func (h *DebugDocumentHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
// find the index to operate on
var indexName string
if h.IndexNameLookup != nil {
indexName = h.IndexNameLookup(req)
}
if indexName == "" {
indexName = h.defaultIndexName
}
index := IndexByName(indexName)
if index == nil {
showError(w, req, fmt.Sprintf("no such index '%s'", indexName), 404)
return
}
// find the docID
var docID string
if h.DocIDLookup != nil {
docID = h.DocIDLookup(req)
}
internalIndex, _, err := index.Advanced()
if err != nil {
showError(w, req, fmt.Sprintf("error getting index: %v", err), 500)
return
}
internalIndexReader, err := internalIndex.Reader()
if err != nil {
showError(w, req, fmt.Sprintf("error operning index reader: %v", err), 500)
return
}
var rv []interface{}
rowChan := internalIndexReader.DumpDoc(docID)
for row := range rowChan {
switch row := row.(type) {
case error:
showError(w, req, fmt.Sprintf("error debugging document: %v", row), 500)
return
case upsidedown.UpsideDownCouchRow:
tmp := struct {
Key []byte `json:"key"`
Val []byte `json:"val"`
}{
Key: row.Key(),
Val: row.Value(),
}
rv = append(rv, tmp)
}
}
err = internalIndexReader.Close()
if err != nil {
showError(w, req, fmt.Sprintf("error closing index reader: %v", err), 500)
return
}
mustEncode(w, rv)
}
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