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Diffstat (limited to 'server-tools/instance-manager/instance.h')
| -rw-r--r-- | server-tools/instance-manager/instance.h | 273 |
1 files changed, 0 insertions, 273 deletions
diff --git a/server-tools/instance-manager/instance.h b/server-tools/instance-manager/instance.h deleted file mode 100644 index aa9c923cba1..00000000000 --- a/server-tools/instance-manager/instance.h +++ /dev/null @@ -1,273 +0,0 @@ -#ifndef INCLUDES_MYSQL_INSTANCE_MANAGER_INSTANCE_H -#define INCLUDES_MYSQL_INSTANCE_MANAGER_INSTANCE_H -/* Copyright (C) 2004 MySQL AB - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; version 2 of the License. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ - -#include <my_global.h> -#include <m_string.h> - -#include "instance_options.h" -#include "priv.h" - -#if defined(__GNUC__) && defined(USE_PRAGMA_INTERFACE) -#pragma interface -#endif - -class Instance_map; -class Thread_registry; - - -/** - Instance_name -- the class represents instance name -- a string of length - less than MAX_INSTANCE_NAME_SIZE. - - Generally, this is just a string with self-memory-management and should be - eliminated in the future. -*/ - -class Instance_name -{ -public: - Instance_name(const LEX_STRING *name); - -public: - inline const LEX_STRING *get_str() const - { - return &str; - } - - inline const char *get_c_str() const - { - return str.str; - } - - inline uint get_length() const - { - return str.length; - } - -private: - LEX_STRING str; - char str_buffer[MAX_INSTANCE_NAME_SIZE]; -}; - - -class Instance -{ -public: - /* States of an instance. */ - enum enum_instance_state - { - STOPPED, - NOT_STARTED, - STARTING, - STARTED, - JUST_CRASHED, - CRASHED, - CRASHED_AND_ABANDONED, - STOPPING - }; - -public: - /** - The constant defines name of the default mysqld-instance ("mysqld"). - */ - static const LEX_STRING DFLT_INSTANCE_NAME; - -public: - static bool is_name_valid(const LEX_STRING *name); - static bool is_mysqld_compatible_name(const LEX_STRING *name); - -public: - Instance(); - ~Instance(); - - bool init(const LEX_STRING *name_arg); - bool complete_initialization(); - -public: - bool is_active(); - - bool is_mysqld_running(); - - bool start_mysqld(); - bool stop_mysqld(); - bool kill_mysqld(int signo); - - void lock(); - void unlock(); - - const char *get_state_name(); - - void reset_stat(); - -public: - /** - The operation is intended to check if the instance is mysqld-compatible - or not. - */ - inline bool is_mysqld_compatible() const; - - /** - The operation is intended to check if the instance is configured properly - or not. Misconfigured instances are not managed. - */ - inline bool is_configured() const; - - /** - The operation returns TRUE if the instance is guarded and FALSE otherwise. - */ - inline bool is_guarded() const; - - /** - The operation returns name of the instance. - */ - inline const LEX_STRING *get_name() const; - - /** - The operation returns the current state of the instance. - - NOTE: At the moment should be used only for guarded instances. - */ - inline enum_instance_state get_state() const; - - /** - The operation changes the state of the instance. - - NOTE: At the moment should be used only for guarded instances. - TODO: Make private. - */ - inline void set_state(enum_instance_state new_state); - - /** - The operation returns crashed flag. - */ - inline bool is_crashed(); - -public: - /** - This attributes contains instance options. - - TODO: Make private. - */ - Instance_options options; - -private: - /** - monitoring_thread_active is TRUE if there is a thread that monitors the - corresponding mysqld-process. - */ - bool monitoring_thread_active; - - /** - crashed is TRUE when corresponding mysqld-process has been died after - start. - */ - bool crashed; - - /** - configured is TRUE when the instance is configured and FALSE otherwise. - Misconfigured instances are not managed. - */ - bool configured; - - /* - mysqld_compatible specifies whether the instance is mysqld-compatible - or not. Mysqld-compatible instances can contain only mysqld-specific - options. At the moment an instance is mysqld-compatible if its name is - "mysqld". - - The idea is that [mysqld] section should contain only mysqld-specific - options (no Instance Manager-specific options) to be readable by mysqld - program. - */ - bool mysqld_compatible; - - /* - Mutex protecting the instance. - */ - pthread_mutex_t LOCK_instance; - -private: - /* Guarded-instance attributes. */ - - /* state of an instance (i.e. STARTED, CRASHED, etc.) */ - enum_instance_state state; - -public: - /* the amount of attemts to restart instance (cleaned up at success) */ - int restart_counter; - - /* triggered at a crash */ - time_t crash_moment; - - /* General time field. Used to provide timeouts (at shutdown and restart) */ - time_t last_checked; - -private: - static const char *get_instance_state_name(enum_instance_state state); - -private: - void remove_pid(); - - bool wait_for_stop(); - -private: - friend class Instance_monitor; -}; - - -inline bool Instance::is_mysqld_compatible() const -{ - return mysqld_compatible; -} - - -inline bool Instance::is_configured() const -{ - return configured; -} - - -inline bool Instance::is_guarded() const -{ - return !options.nonguarded; -} - - -inline const LEX_STRING *Instance::get_name() const -{ - return &options.instance_name; -} - - -inline Instance::enum_instance_state Instance::get_state() const -{ - return state; -} - - -inline void Instance::set_state(enum_instance_state new_state) -{ - state= new_state; -} - - -inline bool Instance::is_crashed() -{ - return crashed; -} - -#endif /* INCLUDES_MYSQL_INSTANCE_MANAGER_INSTANCE_H */ |