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284 lines
8.0 KiB
C++
284 lines
8.0 KiB
C++
//
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// Message.h
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//
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// Library: Foundation
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// Package: Logging
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// Module: Message
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//
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// Definition of the Message class.
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// SPDX-License-Identifier: BSL-1.0
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//
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#ifndef Foundation_Message_INCLUDED
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#define Foundation_Message_INCLUDED
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#include <map>
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#include <vector>
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#include "Poco/Foundation.h"
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#include "Poco/Timestamp.h"
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namespace Poco
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{
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class Foundation_API Message
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/// This class represents a log message that is sent through a
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/// chain of log channels.
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///
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/// A Message contains a priority denoting the severity of the
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/// message, a source describing its origin, a text describing
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/// its meaning, the time of its creation, and an identifier of
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/// the process and thread that created the message.
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///
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/// Optionally a Message can also contain the source file path
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/// and line number of the statement generating the message.
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///
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/// A Message can also contain any number of named parameters
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/// that contain additional information about the event that
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/// caused the message.
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{
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public:
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enum Priority
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{
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PRIO_FATAL = 1, /// A fatal error. The application will most likely terminate. This is the highest priority.
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PRIO_CRITICAL, /// A critical error. The application might not be able to continue running successfully.
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PRIO_ERROR, /// An error. An operation did not complete successfully, but the application as a whole is not affected.
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PRIO_WARNING, /// A warning. An operation completed with an unexpected result.
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PRIO_NOTICE, /// A notice, which is an information with just a higher priority.
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PRIO_INFORMATION, /// An informational message, usually denoting the successful completion of an operation.
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PRIO_DEBUG, /// A debugging message.
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PRIO_TRACE, /// A tracing message. This is the lowest priority useful for production.
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PRIO_TEST /// A message for test environment.
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};
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Message();
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/// Creates an empty Message.
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/// The thread and process ids are set.
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Message(const std::string & source, const std::string & text, Priority prio);
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/// Creates a Message with the given source, text and priority.
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/// The thread and process ids are set.
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Message(
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const std::string & source, const std::string & text, Priority prio, const char * file, int line,
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std::string_view fmt_str = {}, const std::vector<std::string> & fmt_str_args = {});
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Message(
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std::string && source, std::string && text, Priority prio, const char * file, int line,
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std::string_view fmt_str, std::vector<std::string> && fmt_str_args);
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/// Creates a Message with the given source, text, priority,
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/// source file path and line.
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///
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/// The source file path must be a
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/// static string with a lifetime that's at least the lifetime
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/// of the message object (the string is not copied internally).
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/// Usually, this will be the path string obtained from the
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/// __FILE__ macro.
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///
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/// The thread and process ids are set.
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Message(const Message & msg);
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/// Creates a Message by copying another one.
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Message(const Message & msg, const std::string & text);
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/// Creates a Message by copying all but the text from another message.
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~Message();
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/// Destroys the Message.
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Message & operator=(const Message & msg);
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/// Assignment operator.
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void swap(Message & msg);
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/// Swaps the message with another one.
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void setSource(const std::string & src);
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/// Sets the source of the message.
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const std::string & getSource() const;
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/// Returns the source of the message.
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void setText(const std::string & text);
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/// Sets the text of the message.
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const std::string & getText() const;
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/// Returns the text of the message.
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void appendText(const std::string & text);
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void setPriority(Priority prio);
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/// Sets the priority of the message.
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Priority getPriority() const;
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/// Returns the priority of the message.
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void setTime(const Timestamp & time);
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/// Sets the time of the message.
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const Timestamp & getTime() const;
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/// Returns the time of the message.
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void setThread(const std::string & thread);
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/// Sets the thread identifier for the message.
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const std::string & getThread() const;
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/// Returns the thread identifier for the message.
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void setTid(long pid);
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/// Sets the numeric thread identifier for the message.
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long getTid() const;
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/// Returns the numeric thread identifier for the message.
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void setPid(long pid);
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/// Sets the process identifier for the message.
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long getPid() const;
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/// Returns the process identifier for the message.
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void setSourceFile(const char * file);
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/// Sets the source file path of the statement
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/// generating the log message.
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///
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/// File must be a static string, such as the value of
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/// the __FILE__ macro. The string is not copied
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/// internally for performance reasons.
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const char * getSourceFile() const;
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/// Returns the source file path of the code creating
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/// the message. May be 0 if not set.
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void setSourceLine(int line);
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/// Sets the source file line of the statement
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/// generating the log message.
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///
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/// This is usually the result of the __LINE__
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/// macro.
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std::string_view getFormatString() const;
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void setFormatString(std::string_view fmt_str);
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const std::vector<std::string> & getFormatStringArgs() const;
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void setFormatStringArgs(const std::vector<std::string> & fmt_str_args);
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int getSourceLine() const;
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/// Returns the source file line of the statement
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/// generating the log message. May be 0
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/// if not set.
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bool has(const std::string & param) const;
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/// Returns true if a parameter with the given name exists.
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const std::string & get(const std::string & param) const;
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/// Returns a const reference to the value of the parameter
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/// with the given name. Throws a NotFoundException if the
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/// parameter does not exist.
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const std::string & get(const std::string & param, const std::string & defaultValue) const;
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/// Returns a const reference to the value of the parameter
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/// with the given name. If the parameter with the given name
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/// does not exist, then defaultValue is returned.
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void set(const std::string & param, const std::string & value);
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/// Sets the value for a parameter. If the parameter does
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/// not exist, then it is created.
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const std::string & operator[](const std::string & param) const;
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/// Returns a const reference to the value of the parameter
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/// with the given name. Throws a NotFoundException if the
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/// parameter does not exist.
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std::string & operator[](const std::string & param);
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/// Returns a reference to the value of the parameter with the
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/// given name. This can be used to set the parameter's value.
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/// If the parameter does not exist, it is created with an
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/// empty string value.
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protected:
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void init();
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typedef std::map<std::string, std::string> StringMap;
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private:
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std::string _source;
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std::string _text;
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Priority _prio;
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Timestamp _time;
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long _tid;
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std::string _thread;
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mutable long _pid = -1;
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const char * _file;
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int _line;
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StringMap * _pMap;
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std::string_view _fmt_str;
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std::vector<std::string> _fmt_str_args;
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};
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//
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// inlines
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//
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inline const std::string & Message::getSource() const
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{
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return _source;
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}
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inline const std::string & Message::getText() const
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{
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return _text;
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}
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inline Message::Priority Message::getPriority() const
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{
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return _prio;
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}
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inline const Timestamp & Message::getTime() const
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{
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return _time;
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}
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inline const std::string & Message::getThread() const
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{
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return _thread;
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}
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inline long Message::getTid() const
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{
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return _tid;
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}
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inline const char * Message::getSourceFile() const
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{
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return _file;
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}
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inline int Message::getSourceLine() const
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{
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return _line;
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}
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inline void swap(Message & m1, Message & m2)
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{
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m1.swap(m2);
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}
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} // namespace Poco
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#endif // Foundation_Message_INCLUDED
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