core logger support multiple level + switch ixbots to user corelogger instead of spdlog

ixcore/ixcore/utils/IXCoreLogger.cpp

@@ -1,14 +1,44 @@
-#include "ixcore/utils/IXCoreLogger.h"
+/*
+ *  IXCoreLogger.cpp
+ *  Author: Thomas Wells, Benjamin Sergeant
+ *  Copyright (c) 2019-2020 Machine Zone, Inc. All rights reserved.
+ */
 
+#include "ixcore/utils/IXCoreLogger.h"
 
 namespace ix
 {
-    // Default do nothing logger
-    IXCoreLogger::LogFunc IXCoreLogger::_currentLogger = [](const char* /*msg*/) {};
+    // Default do a no-op logger
+    CoreLogger::LogFunc CoreLogger::_currentLogger = [](const char*, LogLevel) {};
 
-    void IXCoreLogger::Log(const char* msg)
+    void CoreLogger::log(const char* msg, LogLevel level)
     {
-        _currentLogger(msg);
+        _currentLogger(msg, level);
+    }
+
+    void CoreLogger::debug(const std::string& msg)
+    {
+        _currentLogger(msg.c_str(), LogLevel::Debug);
+    }
+
+    void CoreLogger::info(const std::string& msg)
+    {
+        _currentLogger(msg.c_str(), LogLevel::Info);
+    }
+
+    void CoreLogger::warn(const std::string& msg)
+    {
+        _currentLogger(msg.c_str(), LogLevel::Warning);
+    }
+
+    void CoreLogger::error(const std::string& msg)
+    {
+        _currentLogger(msg.c_str(), LogLevel::Error);
+    }
+
+    void CoreLogger::critical(const std::string& msg)
+    {
+        _currentLogger(msg.c_str(), LogLevel::Critical);
     }
 
 } // namespace ix

ixcore/ixcore/utils/IXCoreLogger.h

@@ -1,13 +1,36 @@
+/*
+ *  IXCoreLogger.h
+ *  Author: Thomas Wells, Benjamin Sergeant
+ *  Copyright (c) 2019-2020 Machine Zone, Inc. All rights reserved.
+ */
+
 #pragma once
 #include <functional>
+#include <string>
 
 namespace ix
 {
-    class IXCoreLogger
+    enum class LogLevel
+    {
+        Debug = 0,
+        Info = 1,
+        Warning = 2,
+        Error = 3,
+        Critical = 4
+    };
+
+    class CoreLogger
     {
     public:
-        using LogFunc = std::function<void(const char*)>;
-        static void Log(const char* msg);
+        using LogFunc = std::function<void(const char*, LogLevel level)>;
+
+        static void log(const char* msg, LogLevel level = LogLevel::Debug);
+
+        static void debug(const std::string& msg);
+        static void info(const std::string& msg);
+        static void warn(const std::string& msg);
+        static void error(const std::string& msg);
+        static void critical(const std::string& msg);
 
         static void setLogFunction(LogFunc& func)
         {