113 lines
2.7 KiB
Go
113 lines
2.7 KiB
Go
// Copyright (c) 2014 Couchbase, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package http
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import (
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"fmt"
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"net/http"
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"time"
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"github.com/blevesearch/bleve/document"
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)
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type DocGetHandler struct {
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defaultIndexName string
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IndexNameLookup varLookupFunc
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DocIDLookup varLookupFunc
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}
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func NewDocGetHandler(defaultIndexName string) *DocGetHandler {
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return &DocGetHandler{
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defaultIndexName: defaultIndexName,
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}
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}
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func (h *DocGetHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
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// find the index to operate on
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var indexName string
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if h.IndexNameLookup != nil {
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indexName = h.IndexNameLookup(req)
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}
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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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// find the doc id
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var docID string
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if h.DocIDLookup != nil {
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docID = h.DocIDLookup(req)
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}
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if docID == "" {
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showError(w, req, "document id cannot be empty", 400)
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return
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}
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doc, err := index.Document(docID)
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if err != nil {
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showError(w, req, fmt.Sprintf("error deleting document '%s': %v", docID, err), 500)
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return
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}
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if doc == nil {
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showError(w, req, fmt.Sprintf("no such document '%s'", docID), 404)
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return
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}
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rv := struct {
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ID string `json:"id"`
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Fields map[string]interface{} `json:"fields"`
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}{
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ID: docID,
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Fields: map[string]interface{}{},
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}
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for _, field := range doc.Fields {
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var newval interface{}
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switch field := field.(type) {
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case *document.TextField:
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newval = string(field.Value())
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case *document.NumericField:
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n, err := field.Number()
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if err == nil {
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newval = n
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}
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case *document.DateTimeField:
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d, err := field.DateTime()
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if err == nil {
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newval = d.Format(time.RFC3339Nano)
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}
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}
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existing, existed := rv.Fields[field.Name()]
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if existed {
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switch existing := existing.(type) {
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case []interface{}:
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rv.Fields[field.Name()] = append(existing, newval)
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case interface{}:
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arr := make([]interface{}, 2)
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arr[0] = existing
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arr[1] = newval
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rv.Fields[field.Name()] = arr
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}
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} else {
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rv.Fields[field.Name()] = newval
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}
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}
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mustEncode(w, rv)
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}
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