109 lines
2.7 KiB
Go
109 lines
2.7 KiB
Go
// Copyright 2018, Google
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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 pyre
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import (
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"strconv"
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"strings"
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"github.com/google/uuid"
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"github.com/kurin/blazer/internal/b2types"
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)
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const uploadFilePrefix = "/b2api/v1/b2_upload_file/"
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type SimpleFileManager interface {
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Writer(bucket, name, id string) (io.WriteCloser, error)
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}
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type simpleFileServer struct {
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fm SimpleFileManager
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}
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type uploadRequest struct {
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name string
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contentType string
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size int64
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sha1 string
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bucket string
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info map[string]string
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}
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func parseUploadHeaders(r *http.Request) (*uploadRequest, error) {
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ur := &uploadRequest{info: make(map[string]string)}
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ur.name = r.Header.Get("X-Bz-File-Name")
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ur.contentType = r.Header.Get("Content-Type")
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ur.sha1 = r.Header.Get("X-Bz-Content-Sha1")
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size, err := strconv.ParseInt(r.Header.Get("Content-Length"), 10, 64)
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if err != nil {
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return nil, err
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}
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ur.size = size
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for k := range r.Header {
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if !strings.HasPrefix("X-Bz-Info-", k) {
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continue
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}
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name := strings.TrimPrefix("X-Bz-Info-", k)
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ur.info[name] = r.Header.Get(k)
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}
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ur.bucket = strings.TrimPrefix(r.URL.Path, uploadFilePrefix)
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return ur, nil
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}
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func (fs *simpleFileServer) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
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req, err := parseUploadHeaders(r)
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if err != nil {
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http.Error(rw, err.Error(), 500)
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fmt.Println("oh no")
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return
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}
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id := uuid.New().String()
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w, err := fs.fm.Writer(req.bucket, req.name, id)
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if err != nil {
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http.Error(rw, err.Error(), 500)
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fmt.Println("oh no")
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return
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}
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if _, err := io.Copy(w, io.LimitReader(r.Body, req.size)); err != nil {
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w.Close()
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http.Error(rw, err.Error(), 500)
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fmt.Println("oh no")
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return
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}
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if err := w.Close(); err != nil {
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http.Error(rw, err.Error(), 500)
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fmt.Println("oh no")
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return
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}
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resp := &b2types.UploadFileResponse{
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FileID: id,
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Name: req.name,
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SHA1: req.sha1,
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BucketID: req.bucket,
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}
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if err := json.NewEncoder(rw).Encode(resp); err != nil {
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http.Error(rw, err.Error(), 500)
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fmt.Println("oh no")
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return
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}
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}
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func RegisterSimpleFileManagerOnMux(f SimpleFileManager, mux *http.ServeMux) {
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mux.Handle(uploadFilePrefix, &simpleFileServer{fm: f})
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}
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