114 lines
3.6 KiB
C++
114 lines
3.6 KiB
C++
#include <NanEventCallback.h>
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#include <iostream>
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#include "logger.h"
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/* Basic */
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void(*logger::_force_log)(logger::category::value, logger::level::level_enum /* lvl */, const std::string_view& /* message */);
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/* NODE JS */
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struct LogMessage {
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uint8_t level;
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uint8_t category;
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std::string message;
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LogMessage* next_message;
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};
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std::mutex log_messages_lock;
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LogMessage* log_messages_head = nullptr;
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LogMessage** log_messages_tail = &log_messages_head;
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Nan::callback_t<> log_messages_callback;
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void force_log_node(logger::category::value, spdlog::level::level_enum, const std::string_view &);
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/* Normal */
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void force_log_raw(logger::category::value, spdlog::level::level_enum level, const std::string_view &message);
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struct StdExternalStringResourceBase : public v8::String::ExternalOneByteStringResource {
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public:
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explicit StdExternalStringResourceBase(const std::string& message) : message(message) {}
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const char *data() const override {
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return this->message.data();
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}
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size_t length() const override {
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return this->message.length();
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}
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private:
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std::string message;
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};
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inline v8::Local<v8::Value> get_logger_method() {
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v8::Local<v8::Object> global_context = Nan::GetCurrentContext()->Global();
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v8::Local<v8::Object> logger_context = global_context->Get(Nan::New<v8::String>("logger").ToLocalChecked()).As<v8::Object>();
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v8::Local<v8::Value> logger_method = logger_context->Get(Nan::New<v8::String>("log").ToLocalChecked());
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if(!logger_method.IsEmpty() && !logger_method->IsNullOrUndefined())
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return logger_method;
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logger_context = global_context->Get(Nan::New<v8::String>("console").ToLocalChecked()).As<v8::Object>();
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return logger_context->Get(Nan::New<v8::String>("log").ToLocalChecked());
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}
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void logger::initialize_node() {
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log_messages_callback = Nan::async_callback([]{
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auto isolate = Nan::GetCurrentContext()->GetIsolate();
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v8::Local<v8::Value> logger_method = get_logger_method();
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v8::Local<v8::Value> arguments[3];
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while(true) {
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std::unique_lock messages_lock(log_messages_lock);
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if(!log_messages_head)
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break;
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auto entry = log_messages_head;
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log_messages_head = entry->next_message;
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if(!log_messages_head)
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log_messages_tail = &log_messages_head;
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messages_lock.unlock();
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if(!logger_method.IsEmpty() && !logger_method->IsNullOrUndefined()) {
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arguments[0] = Nan::New<v8::Number>(entry->category);
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arguments[1] = Nan::New<v8::Number>(entry->level);
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arguments[2] = v8::String::NewExternalOneByte(isolate, new StdExternalStringResourceBase(entry->message)).ToLocalChecked();
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logger_method.As<v8::Function>()->Call(Nan::Undefined(), 3, arguments);
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} else {
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std::cout << "Failed to log message! Invalid method!" << std::endl;
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}
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delete entry;
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}
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});
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logger::_force_log = force_log_node;
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}
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void logger::initialize_raw() {
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logger::_force_log = force_log_raw;
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}
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void force_log_node(logger::category::value category, spdlog::level::level_enum level, const std::string_view &message) {
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auto entry = new LogMessage{};
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entry->level = level;
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entry->category = category;
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entry->message = std::string(message.data(), message.length());
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entry->next_message = nullptr;
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{
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std::lock_guard lock(log_messages_lock);
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*log_messages_tail = entry;
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log_messages_tail = &(entry->next_message);
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}
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log_messages_callback();
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}
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void force_log_raw(logger::category::value category, spdlog::level::level_enum level, const std::string_view &message) {
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std::cout << "[" << level << "][" << category << "] " << message << std::endl;
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}
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void logger::err_handler(const std::string &message) {
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std::cout << "[ERROR] " << message << std::endl;
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} |