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adce6ae851
* Fix close time settings for ledger load * More info in ledger_request and inbound ledger JSON replies
109 lines
3.9 KiB
C++
109 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) 2012-2014 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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namespace ripple {
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// {
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// ledger_hash : <ledger>
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// ledger_index : <ledger_index>
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// }
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Json::Value doLedgerRequest (RPC::Context& context)
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{
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context.lock_.unlock ();
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auto const hasHash = context.params_.isMember (jss::ledger_hash);
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auto const hasIndex = context.params_.isMember (jss::ledger_index);
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auto& ledgerMaster = getApp().getLedgerMaster();
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LedgerHash ledgerHash;
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if ((hasHash && hasIndex) || !(hasHash || hasIndex))
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{
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return RPC::make_param_error(
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"Exactly one of ledger_hash and ledger_index can be set.");
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}
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if (hasHash)
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{
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auto const& jsonHash = context.params_[jss::ledger_hash];
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if (!jsonHash.isString() || !ledgerHash.SetHex (jsonHash.asString ()))
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return RPC::invalid_field_message ("ledger_hash");
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} else {
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auto const& jsonIndex = context.params_[jss::ledger_index];
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if (!jsonIndex.isNumeric ())
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return RPC::invalid_field_message ("ledger_index");
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// We need a validated ledger to get the hash from the sequence
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if (ledgerMaster.getValidatedLedgerAge() > 120)
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return rpcError (rpcNO_CURRENT);
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auto ledgerIndex = jsonIndex.asInt();
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auto ledger = ledgerMaster.getValidatedLedger();
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if (ledgerIndex >= ledger->getLedgerSeq())
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return RPC::make_param_error("Ledger index too large");
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// Try to get the hash of the desired ledger from the validated ledger
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ledgerHash = ledger->getLedgerHash (ledgerIndex);
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if (ledgerHash == zero)
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{
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// Find a ledger more likely to have the hash of the desired ledger
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auto refIndex = (ledgerIndex + 255) & (~255);
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auto refHash = ledger->getLedgerHash (refIndex);
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assert (refHash.isNonZero ());
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ledger = ledgerMaster.getLedgerByHash (refHash);
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if (!ledger)
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{
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// We don't have the ledger we need to figure out which ledger
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// they want. Try to get it.
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Json::Value jvResult = getApp().getInboundLedgers().findCreate (
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refHash, refIndex, InboundLedger::fcGENERIC)->getJson (0);
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jvResult[jss::error] = "ledgerNotFound";
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return jvResult;
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}
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ledgerHash = ledger->getLedgerHash (ledgerIndex);
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assert (ledgerHash.isNonZero ());
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}
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}
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auto ledger = ledgerMaster.getLedgerByHash (ledgerHash);
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if (ledger)
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{
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// We already have the ledger they want
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Json::Value jvResult;
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jvResult[jss::ledger_index] = ledger->getLedgerSeq();
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ledger->addJson (jvResult, 0);
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return jvResult;
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}
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else
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{
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// Try to get the desired ledger
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auto il = getApp().getInboundLedgers().findCreate (
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ledgerHash, 0, InboundLedger::fcGENERIC);
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return il->getJson (0);
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}
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}
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} // ripple
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