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99 lines
3.4 KiB
C++
99 lines
3.4 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of clio: https://github.com/XRPLF/clio
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Copyright (c) 2025, the clio developers.
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Permission to use, copy, modify, and 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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#include "cluster/ClioNode.hpp"
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#include "etl/WriterState.hpp"
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#include "util/TimeUtils.hpp"
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#include <boost/json/conversion.hpp>
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#include <boost/json/object.hpp>
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#include <boost/json/value.hpp>
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#include <boost/uuid/uuid.hpp>
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#include <chrono>
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#include <cstdint>
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#include <memory>
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#include <stdexcept>
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#include <string>
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#include <string_view>
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#include <utility>
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namespace cluster {
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namespace {
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struct JsonFields {
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static constexpr std::string_view const kUPDATE_TIME = "update_time";
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static constexpr std::string_view const kDB_ROLE = "db_role";
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};
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} // namespace
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ClioNode
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ClioNode::from(ClioNode::Uuid uuid, etl::WriterStateInterface const& writerState)
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{
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auto const dbRole = [&writerState]() {
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if (writerState.isReadOnly()) {
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return ClioNode::DbRole::ReadOnly;
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}
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if (writerState.isFallback()) {
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return ClioNode::DbRole::Fallback;
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}
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if (writerState.isLoadingCache()) {
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return ClioNode::DbRole::LoadingCache;
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}
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return writerState.isWriting() ? ClioNode::DbRole::Writer : ClioNode::DbRole::NotWriter;
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}();
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return ClioNode{.uuid = std::move(uuid), .updateTime = std::chrono::system_clock::now(), .dbRole = dbRole};
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}
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void
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tag_invoke(boost::json::value_from_tag, boost::json::value& jv, ClioNode const& node)
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{
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jv = {
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{JsonFields::kUPDATE_TIME, util::systemTpToUtcStr(node.updateTime, ClioNode::kTIME_FORMAT)},
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{JsonFields::kDB_ROLE, static_cast<int64_t>(node.dbRole)}
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};
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}
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ClioNode
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tag_invoke(boost::json::value_to_tag<ClioNode>, boost::json::value const& jv)
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{
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auto const& updateTimeStr = jv.as_object().at(JsonFields::kUPDATE_TIME).as_string();
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auto const updateTime = util::systemTpFromUtcStr(std::string(updateTimeStr), ClioNode::kTIME_FORMAT);
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if (!updateTime.has_value()) {
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throw std::runtime_error("Failed to parse update time");
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}
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auto const dbRoleValue = jv.as_object().at(JsonFields::kDB_ROLE).as_int64();
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if (dbRoleValue > static_cast<int64_t>(ClioNode::DbRole::MAX))
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throw std::runtime_error("Invalid db_role value");
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return ClioNode{
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// Json data doesn't contain uuid so leaving it empty here. It will be filled outside of this parsing
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.uuid = std::make_shared<boost::uuids::uuid>(),
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.updateTime = updateTime.value(),
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.dbRole = static_cast<ClioNode::DbRole>(dbRoleValue)
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};
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}
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} // namespace cluster
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