5fa3ef8236
Earlier, by default, the error and message logfiles were written to the filesystem and trace and debug logfiles to shared memory. Now, with just one log-file the default must be the file-system. However, if info and debug messages are logged, then the filesystem will become a bottle-neck. A reasonable approach is then as follows (in the config file) syslog=true maxlog=false log_to_shm=true With this set, the maxlog file will be created to shared memory, but nothing will be written to it, since it is disabled. However, if there is a need to investigate something, then a dba can from maxadmin turn on maxlog logging and also enable info and debug messages. That is, it will be possible to enable debugging output without restarting maxscale. Incidentally, the way the config file and command line arguments are handled should be rewritten. Currently, it is a mess.
158 lines
5.8 KiB
C
158 lines
5.8 KiB
C
#ifndef _MAXSCALE_CONFIG_H
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#define _MAXSCALE_CONFIG_H
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/*
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* This file is distributed as part of the MariaDB Corporation MaxScale. It is free
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* software: you can redistribute it and/or modify it under the terms of the
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* GNU General Public License as published by the Free Software Foundation,
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* version 2.
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*
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* This program 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 FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 51
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* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Copyright MariaDB Corporation Ab 2013-2014
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*/
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#include <skygw_utils.h>
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#include <stdint.h>
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#include <openssl/sha.h>
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#include <spinlock.h>
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/**
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* @file config.h The configuration handling elements
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*
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* @verbatim
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* Revision History
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*
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* Date Who Description
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* 21/06/13 Mark Riddoch Initial implementation
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* 07/05/14 Massimiliano Pinto Added version_string to global configuration
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* 23/05/14 Massimiliano Pinto Added id to global configuration
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* 17/10/14 Mark Riddoch Added poll tuning configuration parameters
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* 05/03/15 Massimiliano Pinto Added sysname, release, sha1_mac to gateway struct
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*
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* @endverbatim
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*/
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#define DEFAULT_NBPOLLS 3 /**< Default number of non block polls before we block */
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#define DEFAULT_POLLSLEEP 1000 /**< Default poll wait time (milliseconds) */
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#define _SYSNAME_STR_LENGTH 256 /**< sysname len */
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#define _RELEASE_STR_LENGTH 256 /**< release len */
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/**
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* Maximum length for configuration parameter value.
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*/
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enum {MAX_PARAM_LEN=256};
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typedef enum {
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UNDEFINED_TYPE = 0x00,
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STRING_TYPE = 0x01,
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COUNT_TYPE = 0x02,
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PERCENT_TYPE = 0x04,
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BOOL_TYPE = 0x08,
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SQLVAR_TARGET_TYPE = 0x10
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} config_param_type_t;
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typedef enum {
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TYPE_UNDEFINED = 0,
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TYPE_MASTER,
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TYPE_ALL
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} target_t;
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enum {MAX_RLAG_NOT_AVAILABLE=-1, MAX_RLAG_UNDEFINED=-2};
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#define PARAM_IS_TYPE(p,t) ((p) & (t))
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/**
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* The config parameter
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*/
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typedef struct config_parameter {
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char *name; /**< The name of the parameter */
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char *value; /**< The value of the parameter */
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union { /*< qualified parameter value by type */
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char* valstr; /*< terminated char* array */
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int valcount; /*< int */
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int valpercent; /*< int */
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bool valbool; /*< bool */
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target_t valtarget; /*< sql variable route target */
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} qfd;
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config_param_type_t qfd_param_type;
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struct config_parameter *next; /**< Next pointer in the linked list */
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} CONFIG_PARAMETER;
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/**
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* The config context structure, used to build the configuration
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* data during the parse process
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*/
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typedef struct config_context {
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char *object; /**< The name of the object being configured */
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CONFIG_PARAMETER *parameters; /**< The list of parameter values */
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void *element; /**< The element created from the data */
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struct config_context *next; /**< Next pointer in the linked list */
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} CONFIG_CONTEXT;
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/**
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* The gateway global configuration data
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*/
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typedef struct {
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int n_threads; /**< Number of polling threads */
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char *version_string; /**< The version string of embedded database library */
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char release_string[_SYSNAME_STR_LENGTH]; /**< The release name string of the system */
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char sysname[_SYSNAME_STR_LENGTH]; /**< The release name string of the system */
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uint8_t mac_sha1[SHA_DIGEST_LENGTH]; /*< The SHA1 digest of an interface MAC address */
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unsigned long id; /**< MaxScale ID */
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unsigned int n_nbpoll; /**< Tune number of non-blocking polls */
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unsigned int pollsleep; /**< Wait time in blocking polls */
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int syslog; /*< Log to syslog */
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int maxlog; /*< Log to MaxScale's own logs */
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int log_to_shm; /*< Write log-file to shared memory */
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unsigned int auth_conn_timeout; /*< Connection timeout for the user authentication */
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unsigned int auth_read_timeout; /*< Read timeout for the user authentication */
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unsigned int auth_write_timeout; /*< Write timeout for the user authentication */
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} GATEWAY_CONF;
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extern int config_load(char *);
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extern int config_reload();
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extern int config_threadcount();
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extern unsigned int config_nbpolls();
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extern unsigned int config_pollsleep();
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CONFIG_PARAMETER* config_get_param(CONFIG_PARAMETER* params, const char* name);
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config_param_type_t config_get_paramtype(CONFIG_PARAMETER* param);
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CONFIG_PARAMETER* config_clone_param(CONFIG_PARAMETER* param);
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void free_config_parameter(CONFIG_PARAMETER* p1);
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extern int config_truth_value(char *);
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extern double config_percentage_value(char *str);
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bool config_set_qualified_param(
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CONFIG_PARAMETER* param,
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void* val,
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config_param_type_t type);
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bool config_get_valint(
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int* val,
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CONFIG_PARAMETER* param,
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const char* name, /*< if NULL examine current param only */
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config_param_type_t ptype);
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bool config_get_valbool(
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bool* val,
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CONFIG_PARAMETER* param,
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const char* name, /*< if NULL examine current param only */
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config_param_type_t ptype);
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bool config_get_valtarget(
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target_t* val,
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CONFIG_PARAMETER* param,
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const char* name, /*< if NULL examine current param only */
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config_param_type_t ptype);
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void config_enable_feedback_task(void);
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void config_disable_feedback_task(void);
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unsigned long config_get_gateway_id(void);
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GATEWAY_CONF* config_get_global_options();
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bool isInternalService(char *router);
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char* config_clean_string_list(char* str);
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#endif
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