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b81f7025c9
Replaces custom logging system with spdlog-based oxen logging. This
commit mainly replaces the backend logging with the spdlog-based system,
but doesn't (yet) convert all the existing LogWarn, etc. to use the new
format-based logging.
New logging statements will look like:
llarp::log::warning(cat, "blah: {}", val);
where `cat` should be set up in each .cpp or cluster of .cpp files, as
described in the oxen-logging README.
As part of spdlog we get fmt, which gives us nice format strings, where
are applied generously in this commit.
Making types printable now requires two steps:
- add a ToString() method
- add this specialization:
template <>
constexpr inline bool llarp::IsToStringFormattable<llarp::Whatever> = true;
This will then allow the type to be printed as a "{}" value in a
fmt::format string. This is applied to all our printable types here,
and all of the `operator<<` are removed.
This commit also:
- replaces various uses of `operator<<` to ToString()
- replaces various uses of std::stringstream with either fmt::format or
plain std::string
- Rename some to_string and toString() methods to ToString() for
consistency (and to work with fmt)
- Replace `stringify(...)` and `make_exception` usage with fmt::format
(and remove stringify/make_exception from util/str.hpp).
47 lines
1.2 KiB
C++
47 lines
1.2 KiB
C++
#include <lokinet/lokinet_misc.h>
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#include <spdlog/sinks/base_sink.h>
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#include <spdlog/details/null_mutex.h>
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#include <mutex>
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namespace llarp::logging
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{
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// Logger that calls a C function with the formatted log message
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template <typename Mutex>
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class CallbackSink : public spdlog::sinks::base_sink<Mutex>
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{
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private:
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lokinet_logger_func log_;
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lokinet_logger_sync sync_;
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void* ctx_;
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public:
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explicit CallbackSink(
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lokinet_logger_func log, lokinet_logger_sync sync = nullptr, void* context = nullptr)
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: log_{log}, sync_{sync}, ctx_{context}
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{}
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protected:
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void
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sink_it_(const spdlog::details::log_msg& msg) override
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{
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if (!log_)
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return;
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spdlog::memory_buf_t formatted;
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spdlog::sinks::base_sink<Mutex>::formatter_->format(msg, formatted);
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log_(fmt::to_string(formatted).c_str(), ctx_);
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}
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void
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flush_() override
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{
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if (sync_)
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sync_(ctx_);
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}
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};
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// Convenience aliases with or without thread safety
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using CallbackSink_mt = CallbackSink<std::mutex>;
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using CallbackSink_st = CallbackSink<spdlog::details::null_mutex>;
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} // namespace llarp::logging
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