87 lines
2.3 KiB
Go
87 lines
2.3 KiB
Go
// Copyright (c) 2014 Couchbase, Inc.
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
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// except in compliance with the License. You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software distributed under the
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// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific language governing permissions
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// and limitations under the License.
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package http
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"log"
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"net/http"
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"github.com/gorilla/mux"
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"github.com/blevesearch/bleve"
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)
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// SearchHandler can handle search requests sent over HTTP
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// the index name can be selected in the URL by mapping a
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// gorilla mux var, or it can be set manually with by
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// setting the defaultIndex value
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type SearchHandler struct {
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defaultIndexName string
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}
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func NewSearchHandler(defaultIndexName string) *SearchHandler {
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return &SearchHandler{
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defaultIndexName: defaultIndexName,
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}
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}
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func (h *SearchHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
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// find the index to operate on
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indexName := mux.Vars(req)["indexName"]
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if indexName == "" {
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indexName = h.defaultIndexName
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}
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index := IndexByName(indexName)
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if index == nil {
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showError(w, req, fmt.Sprintf("no such index '%s'", indexName), 404)
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return
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}
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// read the request body
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requestBody, err := ioutil.ReadAll(req.Body)
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if err != nil {
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showError(w, req, fmt.Sprintf("error reading request body: %v", err), 400)
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return
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}
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log.Printf("request body: %s", requestBody)
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// parse the request
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var searchRequest bleve.SearchRequest
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err = json.Unmarshal(requestBody, &searchRequest)
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if err != nil {
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showError(w, req, fmt.Sprintf("error parsing query: %v", err), 400)
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return
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}
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log.Printf("parsed request %#v", searchRequest)
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// varlidate the query
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err = searchRequest.Query.Validate()
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if err != nil {
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showError(w, req, fmt.Sprintf("error validating query: %v", err), 400)
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return
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}
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// execute the query
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searchResponse, err := index.Search(&searchRequest)
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if err != nil {
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showError(w, req, fmt.Sprintf("error executing query: %v", err), 500)
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return
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}
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// encode the response
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mustEncode(w, searchResponse)
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}
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