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ShardArchiveHandler.h
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ShardArchiveHandler.h
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//------------------------------------------------------------------------------
/*
This file is part of rippled: https://github.com/ripple/rippled
Copyright (c) 2012, 2013 Ripple Labs Inc.
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================
#ifndef RIPPLE_RPC_SHARDARCHIVEHANDLER_H_INCLUDED
#define RIPPLE_RPC_SHARDARCHIVEHANDLER_H_INCLUDED
#include <ripple/app/main/Application.h>
#include <ripple/basics/BasicConfig.h>
#include <ripple/basics/StringUtilities.h>
#include <ripple/net/SSLHTTPDownloader.h>
#include <boost/asio/basic_waitable_timer.hpp>
#include <boost/filesystem.hpp>
namespace ripple {
namespace RPC {
/** Handles the download and import one or more shard archives. */
class ShardArchiveHandler
: public std::enable_shared_from_this <ShardArchiveHandler>
{
public:
ShardArchiveHandler() = delete;
ShardArchiveHandler(ShardArchiveHandler const&) = delete;
ShardArchiveHandler& operator= (ShardArchiveHandler&&) = delete;
ShardArchiveHandler& operator= (ShardArchiveHandler const&) = delete;
/** @param validate if shard data should be verified with network. */
ShardArchiveHandler(Application& app, bool validate);
~ShardArchiveHandler();
/** Add an archive to be downloaded and imported.
@param shardIndex the index of the shard to be imported.
@param url the location of the archive.
@return `true` if successfully added.
@note Returns false if called while downloading.
*/
bool
add(std::uint32_t shardIndex, parsedURL&& url);
/** Starts downloading and importing archives. */
bool
start();
private:
// Begins the download and import of the next archive.
bool
next(std::lock_guard<std::mutex>& l);
// Callback used by the downloader to notify completion of a download.
void
complete(boost::filesystem::path dstPath);
// Extract a downloaded archive and import it into the shard store.
void
process(boost::filesystem::path const& dstPath);
// Remove the archive being processed.
void
remove(std::lock_guard<std::mutex>&);
std::mutex mutable m_;
Application& app_;
std::shared_ptr<SSLHTTPDownloader> downloader_;
boost::filesystem::path const downloadDir_;
bool const validate_;
boost::asio::basic_waitable_timer<std::chrono::steady_clock> timer_;
bool process_;
std::map<std::uint32_t, parsedURL> archives_;
beast::Journal j_;
};
} // RPC
} // ripple
#endif