log_writer.hpp

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#pragma once
 
#include <string>
#include <memory>
#include <fstream>
#include "core/event.hpp"
#include "core/log_level.hpp"
 
namespace financesim {
 
class LogWriter {
public:
    virtual ~LogWriter() = default;
 
    virtual void write(const Event& event, LogLevel level) = 0;
 
    virtual void flush() = 0;
 
    virtual void close() = 0;
 
protected:
    LogWriter() = default;
};
 
using LogWriterPtr = std::shared_ptr<LogWriter>;
 
class ConsoleWriter : public LogWriter {
public:
    ConsoleWriter() = default;
    ~ConsoleWriter() override = default;
 
    void write(const Event& event, LogLevel level) override;
    void flush() override;
    void close() override;
};
 
class JsonWriter : public LogWriter {
public:
    explicit JsonWriter(const std::string& filename);
    ~JsonWriter() override;
 
    void write(const Event& event, LogLevel level) override;
    void flush() override;
    void close() override;
 
private:
    std::ofstream file_;
    std::string filename_;
};
 
} // namespace financesim