| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef _IGNITE_ODBC_LOG |
| #define _IGNITE_ODBC_LOG |
| |
| #include <string> |
| #include <sstream> |
| #include <fstream> |
| |
| #include "ignite/common/common.h" |
| #include "ignite/common/concurrent.h" |
| |
| # define LOG_MSG(param) \ |
| if (ignite::odbc::Logger* p = ignite::odbc::Logger::Get()) \ |
| { \ |
| ignite::odbc::LogStream lstream(p); \ |
| lstream << __FUNCTION__ << ": " << param; \ |
| } |
| |
| namespace ignite |
| { |
| namespace odbc |
| { |
| /* Forward declaration */ |
| class Logger; |
| |
| /** |
| * Helper object providing stream operations for single log line. |
| * Writes resulting string to Logger object upon destruction. |
| */ |
| class LogStream: public std::basic_ostream<char> |
| { |
| public: |
| /** |
| * Constructor. |
| * @param parent pointer to Logger. |
| */ |
| LogStream(Logger* parent); |
| |
| /** |
| * Conversion operator helpful to determine if log is enabled |
| * @return True if logger is enabled |
| */ |
| bool operator()(); |
| |
| /** |
| * Destructor. |
| */ |
| virtual ~LogStream(); |
| |
| private: |
| IGNITE_NO_COPY_ASSIGNMENT(LogStream); |
| |
| /** String buffer. */ |
| std::basic_stringbuf<char> strbuf; |
| |
| /** Parent logger object */ |
| Logger* logger; |
| }; |
| |
| /** |
| * Logging facility. |
| */ |
| class Logger |
| { |
| public: |
| /** |
| * Get instance of Logger, if enabled. |
| * @return Logger instance if logging is enabled. Null otherwise. |
| */ |
| static Logger* Get(); |
| |
| /** |
| * Checks if logging is enabled. |
| * @return True, if logging is enabled. |
| */ |
| bool IsEnabled() const; |
| |
| /** |
| * Outputs the message to log file |
| * @param message The message to write |
| */ |
| void WriteMessage(std::string const& message); |
| |
| private: |
| /** |
| * Constructor. |
| * @param path to log file. |
| */ |
| Logger(const char* path); |
| |
| /** |
| * Destructor. |
| */ |
| ~Logger(); |
| |
| IGNITE_NO_COPY_ASSIGNMENT(Logger); |
| |
| /** Mutex for writes synchronization. */ |
| ignite::common::concurrent::CriticalSection mutex; |
| |
| /** File stream. */ |
| std::ofstream stream; |
| }; |
| } |
| } |
| |
| #endif //_IGNITE_ODBC_LOG |