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bb44bdd047
* Allow pathfinding requests where the starting currency may have multiple issuers. * Cache paths over all issuers to avoid repeating work. * Clear the ledger checkpoint in one retry case. * Add an additional node at the front of paths when the starting issuer is not the source account.
94 lines
3.2 KiB
C++
94 lines
3.2 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 RIPPLED_RIPPLE_APP_PATHS_FINDPATHS_H
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#define RIPPLED_RIPPLE_APP_PATHS_FINDPATHS_H
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namespace ripple {
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class FindPaths
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{
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public:
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FindPaths (
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RippleLineCache::ref cache,
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Account const& srcAccount,
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Account const& dstAccount,
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STAmount const& dstAmount,
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/** searchLevel is the maximum search level allowed in an output path.
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*/
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int searchLevel,
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/** maxPaths is the maximum number of paths that can be returned in
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pathsOut. */
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unsigned int const maxPaths);
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~FindPaths();
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bool findPathsForIssue (
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Issue const& issue,
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/** On input, pathsOut contains any paths you want to ensure are
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included if still good.
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On output, pathsOut will have any additional paths found. Only
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non-default paths without source or destination will be added. */
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STPathSet& pathsOut,
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/** On input, fullLiquidityPath must be an empty STPath.
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On output, if fullLiquidityPath is non-empty, it contains one extra
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path that can move the entire liquidity requested. */
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STPath& fullLiquidityPath);
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private:
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class Impl;
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std::unique_ptr<Impl> impl_;
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};
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bool findPathsForOneIssuer (
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RippleLineCache::ref cache,
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Account const& srcAccount,
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Account const& dstAccount,
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Issue const& srcIssue,
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STAmount const& dstAmount,
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/** searchLevel is the maximum search level allowed in an output path. */
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int searchLevel,
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/** maxPaths is the maximum number of paths that can be returned in
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pathsOut. */
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unsigned int const maxPaths,
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/** On input, pathsOut contains any paths you want to ensure are included if
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still good.
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On output, pathsOut will have any additional paths found. Only
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non-default paths without source or destination will be added. */
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STPathSet& pathsOut,
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/** On input, fullLiquidityPath must be an empty STPath.
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On output, if fullLiquidityPath is non-empty, it contains one extra path
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that can move the entire liquidity requested. */
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STPath& fullLiquidityPath);
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void initializePathfinding ();
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} // ripple
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#endif
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