author | sangheki |
Wed, 13 Nov 2019 10:49:12 -0800 | |
changeset 59060 | fce1fa1bdc91 |
parent 53244 | 9807daeb47c4 |
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/* |
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* Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#ifndef SHARE_LOGGING_LOGOUTPUT_HPP |
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#define SHARE_LOGGING_LOGOUTPUT_HPP |
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#include "logging/logDecorators.hpp" |
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#include "logging/logLevel.hpp" |
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#include "logging/logMessageBuffer.hpp" |
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#include "memory/allocation.hpp" |
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#include "utilities/globalDefinitions.hpp" |
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class LogDecorations; |
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class LogMessageBuffer; |
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class LogSelection; |
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class LogTagSet; |
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// The base class/interface for log outputs. |
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// Keeps track of the latest configuration string, |
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// and its selected decorators. |
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class LogOutput : public CHeapObj<mtLogging> { |
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// Make LogConfiguration a friend to allow it to modify the configuration string. |
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friend class LogConfiguration; |
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private: |
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static const size_t InitialConfigBufferSize = 256; |
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// Track if the output has been reconfigured dynamically during runtime. |
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// The status is set each time the configuration of the output is modified, |
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// and is reset once after logging initialization is complete. |
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bool _reconfigured; |
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char* _config_string; |
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size_t _config_string_buffer_size; |
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// Adds the log selection to the config description (e.g. "tag1+tag2*=level"). |
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void add_to_config_string(const LogSelection& selection); |
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protected: |
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LogDecorators _decorators; |
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// Replaces the current config description with the given string. |
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void set_config_string(const char* string); |
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// Update the config string for this output to reflect its current configuration |
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void update_config_string(const size_t on_level[LogLevel::Count]); |
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void set_decorators(const LogDecorators &decorators) { |
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_decorators = decorators; |
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} |
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const LogDecorators& decorators() const { |
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return _decorators; |
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} |
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bool is_reconfigured() const { |
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return _reconfigured; |
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} |
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const char* config_string() const { |
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return _config_string; |
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} |
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LogOutput() : _reconfigured(false), _config_string(NULL), _config_string_buffer_size(0) { |
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} |
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virtual ~LogOutput(); |
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// If the output can be rotated, trigger a forced rotation, otherwise do nothing. |
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// Log outputs with rotation capabilities should override this. |
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virtual void force_rotate() { |
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// Do nothing by default. |
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} |
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virtual void describe(outputStream *out); |
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virtual const char* name() const = 0; |
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virtual bool initialize(const char* options, outputStream* errstream) = 0; |
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virtual int write(const LogDecorations& decorations, const char* msg) = 0; |
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virtual int write(LogMessageBuffer::Iterator msg_iterator) = 0; |
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}; |
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#endif // SHARE_LOGGING_LOGOUTPUT_HPP |