Destutter filenames

http/write.go

@@ -0,0 +1,119 @@
+// Copyright 2014 The Cayley Authors. All rights reserved.
+//
+// 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 (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"strconv"
+
+	"github.com/barakmich/glog"
+	"github.com/julienschmidt/httprouter"
+
+	"github.com/google/cayley/graph"
+	"github.com/google/cayley/nquads"
+)
+
+func ParseJsonToTripleList(jsonBody []byte) ([]*graph.Triple, error) {
+	var tripleList []*graph.Triple
+	err := json.Unmarshal(jsonBody, &tripleList)
+	if err != nil {
+		return nil, err
+	}
+	for i, t := range tripleList {
+		if !t.IsValid() {
+			return nil, errors.New(fmt.Sprintf("Invalid triple at index %d. %s", i, t.ToString()))
+		}
+	}
+	return tripleList, nil
+}
+
+func (api *Api) ServeV1Write(w http.ResponseWriter, r *http.Request, _ httprouter.Params) int {
+	if api.config.ReadOnly {
+		return FormatJson400(w, "Database is read-only.")
+	}
+	bodyBytes, err := ioutil.ReadAll(r.Body)
+	if err != nil {
+		return FormatJson400(w, err)
+	}
+	tripleList, terr := ParseJsonToTripleList(bodyBytes)
+	if terr != nil {
+		return FormatJson400(w, terr)
+	}
+	api.ts.AddTripleSet(tripleList)
+	fmt.Fprintf(w, "{\"result\": \"Successfully wrote %d triples.\"}", len(tripleList))
+	return 200
+}
+
+func (api *Api) ServeV1WriteNQuad(w http.ResponseWriter, r *http.Request, params httprouter.Params) int {
+	if api.config.ReadOnly {
+		return FormatJson400(w, "Database is read-only.")
+	}
+
+	formFile, _, err := r.FormFile("NQuadFile")
+	if err != nil {
+		glog.Errorln(err)
+		return FormatJsonError(w, 500, "Couldn't read file: "+err.Error())
+	}
+
+	defer formFile.Close()
+
+	blockSize, blockErr := strconv.ParseInt(r.URL.Query().Get("block_size"), 10, 64)
+	if blockErr != nil {
+		blockSize = int64(api.config.LoadSize)
+	}
+
+	tChan := make(chan *graph.Triple)
+	go nquads.ReadNQuadsFromReader(tChan, formFile)
+	tripleblock := make([]*graph.Triple, blockSize)
+	nTriples := 0
+	i := int64(0)
+	for t := range tChan {
+		tripleblock[i] = t
+		i++
+		nTriples++
+		if i == blockSize {
+			api.ts.AddTripleSet(tripleblock)
+			i = 0
+		}
+	}
+	api.ts.AddTripleSet(tripleblock[0:i])
+	fmt.Fprintf(w, "{\"result\": \"Successfully wrote %d triples.\"}", nTriples)
+	return 200
+}
+
+func (api *Api) ServeV1Delete(w http.ResponseWriter, r *http.Request, params httprouter.Params) int {
+	if api.config.ReadOnly {
+		return FormatJson400(w, "Database is read-only.")
+	}
+	bodyBytes, err := ioutil.ReadAll(r.Body)
+	if err != nil {
+		return FormatJson400(w, err)
+	}
+	tripleList, terr := ParseJsonToTripleList(bodyBytes)
+	if terr != nil {
+		return FormatJson400(w, terr)
+	}
+	count := 0
+	for _, triple := range tripleList {
+		api.ts.RemoveTriple(triple)
+		count++
+	}
+	fmt.Fprintf(w, "{\"result\": \"Successfully deleted %d triples.\"}", count)
+	return 200
+}