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49 lines
1.8 KiB
C++
49 lines
1.8 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2013 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef RIPPLE_APP_LEDGER_ABSTRACTFETCHPACKCONTAINER_H_INCLUDED
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#define RIPPLE_APP_LEDGER_ABSTRACTFETCHPACKCONTAINER_H_INCLUDED
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#include <ripple/basics/base_uint.h>
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#include <ripple/basics/Blob.h>
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#include <boost/optional.hpp>
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namespace ripple {
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/** An interface facilitating retrieval of fetch packs without
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an application or ledgermaster object.
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*/
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class AbstractFetchPackContainer
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{
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public:
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virtual ~AbstractFetchPackContainer() = default;
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/** Retrieves partial ledger data of the coresponding hash from peers.`
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@param nodeHash The 256-bit hash of the data to fetch.
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@return `boost::none` if the hash isn't cached,
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otherwise, the hash associated data.
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*/
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virtual boost::optional<Blob> getFetchPack(uint256 const& nodeHash) = 0;
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};
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} // ripple
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#endif
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