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