dispatch/vendor/github.com/blevesearch/bleve/http/fields.go

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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"
)
type ListFieldsHandler struct {
defaultIndexName string
IndexNameLookup varLookupFunc
}
func NewListFieldsHandler(defaultIndexName string) *ListFieldsHandler {
return &ListFieldsHandler{
defaultIndexName: defaultIndexName,
}
}
func (h *ListFieldsHandler) 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
}
fields, err := index.Fields()
if err != nil {
showError(w, req, fmt.Sprintf("error: %v", err), 500)
return
}
fieldsResponse := struct {
Fields []string `json:"fields"`
}{
Fields: fields,
}
// encode the response
mustEncode(w, fieldsResponse)
}