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/**
* @file llupdatedownloader.h
*
* $LicenseInfo:firstyear=2010&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This 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;
* version 2.1 of the License only.
*
* This 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_UPDATE_DOWNLOADER_H
#define LL_UPDATE_DOWNLOADER_H
#include <string>
#include <boost/shared_ptr.hpp>
#include "lluri.h"
//
// An asynchronous download service for fetching updates.
//
class LLUpdateDownloader
{
public:
class Client;
class Implementation;
// Returns the path to the download marker file containing details of the
// latest download.
static std::string downloadMarkerPath(void);
LLUpdateDownloader(Client & client);
// Cancel any in progress download; a no op if none is in progress. The
// client will not receive a complete or error callback.
void cancel(void);
// Start a new download.
void download(LLURI const & uri,
std::string const & hash,
std::string const & updateVersion,
bool required=false);
// Returns true if a download is in progress.
bool isDownloading(void);
// Resume a partial download.
void resume(void);
// Set a limit on the dowload rate.
void setBandwidthLimit(U64 bytesPerSecond);
private:
boost::shared_ptr<Implementation> mImplementation;
};
//
// An interface to be implemented by clients initiating a update download.
//
class LLUpdateDownloader::Client {
public:
// The download has completed successfully.
// data is a map containing the following items:
// url - source (remote) location
// hash - the md5 sum that should match the installer file.
// path - destination (local) location
// required - boolean indicating if this is a required update.
// size - the size of the installer in bytes
virtual void downloadComplete(LLSD const & data) = 0;
// The download failed.
virtual void downloadError(std::string const & message) = 0;
};
#endif
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