diff options
Diffstat (limited to 'swarm/api/storage.go')
-rw-r--r-- | swarm/api/storage.go | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/swarm/api/storage.go b/swarm/api/storage.go new file mode 100644 index 000000000..31b484675 --- /dev/null +++ b/swarm/api/storage.go @@ -0,0 +1,70 @@ +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. + +package api + +type Response struct { + MimeType string + Status int + Size int64 + // Content []byte + Content string +} + +// implements a service +type Storage struct { + api *Api +} + +func NewStorage(api *Api) *Storage { + return &Storage{api} +} + +// Put uploads the content to the swarm with a simple manifest speficying +// its content type +func (self *Storage) Put(content, contentType string) (string, error) { + return self.api.Put(content, contentType) +} + +// Get retrieves the content from bzzpath and reads the response in full +// It returns the Response object, which serialises containing the +// response body as the value of the Content field +// NOTE: if error is non-nil, sResponse may still have partial content +// the actual size of which is given in len(resp.Content), while the expected +// size is resp.Size +func (self *Storage) Get(bzzpath string) (*Response, error) { + reader, mimeType, status, err := self.api.Get(bzzpath, true) + if err != nil { + return nil, err + } + quitC := make(chan bool) + expsize, err := reader.Size(quitC) + if err != nil { + return nil, err + } + body := make([]byte, expsize) + size, err := reader.Read(body) + if int64(size) == expsize { + err = nil + } + return &Response{mimeType, status, expsize, string(body[:size])}, err +} + +// Modify(rootHash, path, contentHash, contentType) takes th e manifest trie rooted in rootHash, +// and merge on to it. creating an entry w conentType (mime) +func (self *Storage) Modify(rootHash, path, contentHash, contentType string) (newRootHash string, err error) { + return self.api.Modify(rootHash+"/"+path, contentHash, contentType, true) +} |