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https://github.com/XRPLF/rippled.git
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JCW
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//------------------------------------------------------------------------------
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/*
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This file is part of Beast: https://github.com/vinniefalco/Beast
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Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
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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_LOGGING_STRUCTUREDJOURNAL_H_INCLUDED
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#define RIPPLE_LOGGING_STRUCTUREDJOURNAL_H_INCLUDED
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#include <xrpl/basics/Log.h>
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#include <xrpl/beast/utility/Journal.h>
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#include <xrpl/json/Writer.h>
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#include <xrpl/json/json_value.h>
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#include <iostream>
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#include <source_location>
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#include <utility>
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namespace ripple {
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namespace log {
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template <typename T>
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class LogParameter
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{
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public:
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template <typename TArg>
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LogParameter(char const* name, TArg&& value)
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: name_(name), value_(std::forward<TArg>(value))
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{
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}
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private:
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char const* name_;
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T value_;
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template <typename U>
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friend std::ostream&
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operator<<(std::ostream& os, LogParameter<U> const&);
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};
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template <typename T>
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class LogField
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{
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public:
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template <typename TArg>
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LogField(char const* name, TArg&& value)
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: name_(name), value_(std::forward<TArg>(value))
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{
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}
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private:
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char const* name_;
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T value_;
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template <typename U>
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friend std::ostream&
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operator<<(std::ostream& os, LogField<U> const&);
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};
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class JsonLogAttributes : public beast::Journal::StructuredLogAttributes
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{
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public:
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using AttributeFields = std::unordered_map<std::string, Json::Value>;
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using Pair = AttributeFields::value_type;
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explicit JsonLogAttributes(AttributeFields contextValues = {});
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void
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setModuleName(std::string const& name) override;
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std::unique_ptr<StructuredLogAttributes>
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clone() const override;
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void
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combine(std::unique_ptr<StructuredLogAttributes> const& context) override;
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void
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combine(std::unique_ptr<StructuredLogAttributes>&& context) override;
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AttributeFields&
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contextValues()
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{
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return contextValues_;
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}
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private:
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AttributeFields contextValues_;
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};
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class JsonStructuredJournal : public beast::Journal::StructuredJournalImpl
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{
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private:
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struct Logger
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{
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std::source_location location = {};
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Json::Value messageParams;
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Logger() = default;
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Logger(
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JsonStructuredJournal const* journal,
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std::source_location location);
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void
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write(
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beast::Journal::Sink* sink,
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beast::severities::Severity level,
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std::string const& text,
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beast::Journal::StructuredLogAttributes* context) const;
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};
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[[nodiscard]] Logger
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logger(std::source_location location) const;
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static thread_local Logger currentLogger_;
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template <typename T>
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friend std::ostream&
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operator<<(std::ostream& os, LogParameter<T> const&);
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template <typename T>
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friend std::ostream&
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operator<<(std::ostream& os, LogField<T> const&);
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public:
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void
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initMessageContext(std::source_location location) override;
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void
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flush(
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beast::Journal::Sink* sink,
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beast::severities::Severity level,
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std::string const& text,
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beast::Journal::StructuredLogAttributes* context) override;
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};
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template <typename T>
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std::ostream&
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operator<<(std::ostream& os, LogParameter<T> const& param)
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{
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using ValueType = std::decay_t<T>;
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// TODO: Update the Json library to support 64-bit integer values.
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if constexpr (
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std::constructible_from<Json::Value, ValueType> &&
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(!std::is_integral_v<ValueType> ||
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sizeof(ValueType) <= sizeof(Json::Int)))
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{
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JsonStructuredJournal::currentLogger_.messageParams[param.name_] =
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Json::Value{param.value_};
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return os << param.value_;
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}
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else
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{
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std::ostringstream oss;
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oss << param.value_;
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JsonStructuredJournal::currentLogger_.messageParams[param.name_] =
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oss.str();
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return os << oss.str();
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}
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}
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template <typename T>
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std::ostream&
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operator<<(std::ostream& os, LogField<T> const& param)
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{
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using ValueType = std::decay_t<T>;
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// TODO: Update the Json library to support 64-bit integer values.
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if constexpr (
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std::constructible_from<Json::Value, ValueType> &&
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(!std::is_integral_v<ValueType> ||
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sizeof(ValueType) <= sizeof(Json::Int)))
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{
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JsonStructuredJournal::currentLogger_.messageParams[param.name_] =
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Json::Value{param.value_};
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}
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else
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{
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std::ostringstream oss;
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oss << param.value_;
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JsonStructuredJournal::currentLogger_.messageParams[param.name_] =
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oss.str();
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}
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return os;
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}
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template <typename T>
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LogParameter<T>
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param(char const* name, T&& value)
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{
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return LogParameter<T>{name, std::forward<T>(value)};
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}
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template <typename T>
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LogField<T>
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field(char const* name, T&& value)
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{
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return LogField<T>{name, std::forward<T>(value)};
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}
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[[nodiscard]] inline std::unique_ptr<JsonLogAttributes>
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attributes(std::initializer_list<JsonLogAttributes::Pair> const& fields)
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{
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return std::make_unique<JsonLogAttributes>(fields);
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}
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} // namespace log
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} // namespace ripple
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#endif
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@@ -23,12 +23,10 @@
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#include <xrpl/beast/utility/Journal.h>
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#include <xrpl/json/json_value.h>
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#include <iostream>
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#include <source_location>
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#include <utility>
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namespace ripple {
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namespace log {
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namespace ripple::log {
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template <typename T>
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class LogParameter
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@@ -215,7 +213,6 @@ attributes(std::initializer_list<JsonLogAttributes::Pair> const& fields)
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return std::make_unique<JsonLogAttributes>(fields);
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}
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} // namespace log
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} // namespace ripple
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} // namespace ripple::log
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#endif
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