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abe735102a
Metadata is correctly generated for the case where a ledger entry is only changed as a consequence of threading. This changes the result compared to previous versions, which produced more than necessary for these cases.
151 lines
3.9 KiB
C++
151 lines
3.9 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_LEDGER_APPLYSTATETABLE_H_INCLUDED
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#define RIPPLE_LEDGER_APPLYSTATETABLE_H_INCLUDED
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#include <ripple/ledger/OpenView.h>
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#include <ripple/ledger/RawView.h>
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#include <ripple/ledger/ReadView.h>
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#include <ripple/protocol/TER.h>
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#include <beast/utility/Journal.h>
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#include <memory>
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// VFALCO TODO Move TxMeta to ripple/ledger/
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#include <ripple/ledger/TxMeta.h>
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namespace ripple {
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namespace detail {
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// Helper class that buffers modifications
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class ApplyStateTable
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{
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public:
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using key_type = ReadView::key_type;
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private:
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enum class Action
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{
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cache,
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erase,
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insert,
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modify,
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};
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using items_t = std::map<key_type,
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std::pair<Action, std::shared_ptr<SLE>>>;
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items_t items_;
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std::uint64_t dropsDestroyed_ = 0;
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public:
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ApplyStateTable() = default;
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ApplyStateTable (ApplyStateTable const&) = delete;
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ApplyStateTable& operator= (ApplyStateTable&&) = delete;
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ApplyStateTable& operator= (ApplyStateTable const&) = delete;
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#ifdef _MSC_VER
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ApplyStateTable (ApplyStateTable&& other)
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: items_ (std::move(other.items_))
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, dropsDestroyed_ (std::move(other.dropsDestroyed_))
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{
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}
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#else
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ApplyStateTable (ApplyStateTable&&) = default;
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#endif
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void
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apply (RawView& to) const;
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void
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apply (OpenView& to, STTx const& tx,
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TER ter, boost::optional<
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STAmount> const& deliver,
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beast::Journal j);
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bool
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exists (ReadView const& base,
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Keylet const& k) const;
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boost::optional<key_type>
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succ (ReadView const& base,
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key_type const& key, boost::optional<
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key_type> const& last) const;
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std::shared_ptr<SLE const>
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read (ReadView const& base,
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Keylet const& k) const;
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std::shared_ptr<SLE>
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peek (ReadView const& base,
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Keylet const& k);
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void
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erase (ReadView const& base,
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std::shared_ptr<SLE> const& sle);
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void
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rawErase (ReadView const& base,
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std::shared_ptr<SLE> const& sle);
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void
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insert(ReadView const& base,
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std::shared_ptr<SLE> const& sle);
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void
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update(ReadView const& base,
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std::shared_ptr<SLE> const& sle);
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void
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replace(ReadView const& base,
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std::shared_ptr<SLE> const& sle);
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void
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destroyXRP (std::uint64_t feeDrops);
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private:
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using Mods = hash_map<key_type,
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std::shared_ptr<SLE>>;
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static
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bool
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threadItem (TxMeta& meta,
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std::shared_ptr<SLE> const& to);
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std::shared_ptr<SLE>
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getForMod (ReadView const& base,
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key_type const& key, Mods& mods,
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beast::Journal j);
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bool
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threadTx (ReadView const& base, TxMeta& meta,
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AccountID const& to, Mods& mods,
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beast::Journal j);
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bool
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threadOwners (ReadView const& base,
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TxMeta& meta, std::shared_ptr<
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SLE const> const& sle, Mods& mods,
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beast::Journal j);
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};
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} // detail
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} // ripple
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#endif
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