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/*
Copyright (c) 2010-2011 Gluster, Inc. <http://www.gluster.com>
This file is part of GlusterFS.
GlusterFS 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; either version 3 of the License,
or (at your option) any later version.
GlusterFS 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, see
<http://www.gnu.org/licenses/>.
*/
#ifndef _OPTIONS_H
#define _OPTIONS_H
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdint.h>
#include <inttypes.h>
#include "xlator.h"
/* Add possible new type of option you may need */
typedef enum {
GF_OPTION_TYPE_ANY = 0,
GF_OPTION_TYPE_STR,
GF_OPTION_TYPE_INT,
GF_OPTION_TYPE_SIZET,
GF_OPTION_TYPE_PERCENT,
GF_OPTION_TYPE_PERCENT_OR_SIZET,
GF_OPTION_TYPE_BOOL,
GF_OPTION_TYPE_XLATOR,
GF_OPTION_TYPE_PATH,
GF_OPTION_TYPE_TIME,
GF_OPTION_TYPE_DOUBLE,
GF_OPTION_TYPE_INTERNET_ADDRESS,
GF_OPTION_TYPE_INTERNET_ADDRESS_LIST,
GF_OPTION_TYPE_PRIORITY_LIST,
GF_OPTION_TYPE_SIZE_LIST,
GF_OPTION_TYPE_MAX,
} volume_option_type_t;
#define ZR_VOLUME_MAX_NUM_KEY 4
#define ZR_OPTION_MAX_ARRAY_SIZE 64
/* Each translator should define this structure */
typedef struct volume_options {
char *key[ZR_VOLUME_MAX_NUM_KEY];
/* different key, same meaning */
volume_option_type_t type;
int64_t min; /* 0 means no range */
int64_t max; /* 0 means no range */
char *value[ZR_OPTION_MAX_ARRAY_SIZE];
/* If specified, will check for one of
the value from this array */
char *default_value;
char *description; /* about the key */
} volume_option_t;
typedef struct vol_opt_list {
struct list_head list;
volume_option_t *given_opt;
} volume_opt_list_t;
int xlator_tree_reconfigure (xlator_t *old_xl, xlator_t *new_xl);
int xlator_validate_rec (xlator_t *xlator, char **op_errstr);
int graph_reconf_validateopt (glusterfs_graph_t *graph, char **op_errstr);
int xlator_option_info_list (volume_opt_list_t *list, char *key,
char **def_val, char **descr);
/*
int validate_xlator_volume_options (xlator_t *xl, dict_t *options,
volume_option_t *opt, char **op_errstr);
*/
int xlator_options_validate_list (xlator_t *xl, dict_t *options,
volume_opt_list_t *list, char **op_errstr);
int xlator_option_validate (xlator_t *xl, char *key, char *value,
volume_option_t *opt, char **op_errstr);
int xlator_options_validate (xlator_t *xl, dict_t *options, char **errstr);
volume_option_t *
xlator_volume_option_get (xlator_t *xl, const char *key);
#define DECLARE_INIT_OPT(type_t, type) \
int \
xlator_option_init_##type (xlator_t *this, dict_t *options, char *key, \
type_t *val_p);
DECLARE_INIT_OPT(char *, str);
DECLARE_INIT_OPT(uint64_t, uint64);
DECLARE_INIT_OPT(int64_t, int64);
DECLARE_INIT_OPT(uint32_t, uint32);
DECLARE_INIT_OPT(int32_t, int32);
DECLARE_INIT_OPT(uint64_t, size);
DECLARE_INIT_OPT(uint32_t, percent);
DECLARE_INIT_OPT(uint64_t, percent_or_size);
DECLARE_INIT_OPT(gf_boolean_t, bool);
DECLARE_INIT_OPT(xlator_t *, xlator);
DECLARE_INIT_OPT(char *, path);
#define DEFINE_INIT_OPT(type_t, type, conv) \
int \
xlator_option_init_##type (xlator_t *this, dict_t *options, char *key, \
type_t *val_p) \
{ \
int ret = 0; \
volume_option_t *opt = NULL; \
char *def_value = NULL; \
char *set_value = NULL; \
char *value = NULL; \
xlator_t *old_THIS = NULL; \
\
opt = xlator_volume_option_get (this, key); \
if (!opt) { \
gf_log (this->name, GF_LOG_WARNING, \
"unknown option: %s", key); \
ret = -1; \
return ret; \
} \
def_value = opt->default_value; \
ret = dict_get_str (options, key, &set_value); \
\
if (def_value) \
value = def_value; \
if (set_value) \
value = set_value; \
if (!value) { \
gf_log (this->name, GF_LOG_TRACE, "option %s not set", \
key); \
return 0; \
} \
if (value == def_value) { \
gf_log (this->name, GF_LOG_TRACE, \
"option %s using default value %s", \
key, value); \
} else { \
gf_log (this->name, GF_LOG_DEBUG, \
"option %s using set value %s", \
key, value); \
} \
old_THIS = THIS; \
THIS = this; \
ret = conv (value, val_p); \
THIS = old_THIS; \
if (ret) \
return ret; \
ret = xlator_option_validate (this, key, value, opt, NULL); \
return ret; \
}
#define GF_OPTION_INIT(key, val, type, err_label) do { \
int val_ret = 0; \
val_ret = xlator_option_init_##type (THIS, THIS->options, \
key, &(val)); \
if (val_ret) \
goto err_label; \
} while (0)
#define DECLARE_RECONF_OPT(type_t, type) \
int \
xlator_option_reconf_##type (xlator_t *this, dict_t *options, char *key,\
type_t *val_p);
DECLARE_RECONF_OPT(char *, str);
DECLARE_RECONF_OPT(uint64_t, uint64);
DECLARE_RECONF_OPT(int64_t, int64);
DECLARE_RECONF_OPT(uint32_t, uint32);
DECLARE_RECONF_OPT(int32_t, int32);
DECLARE_RECONF_OPT(uint64_t, size);
DECLARE_RECONF_OPT(uint32_t, percent);
DECLARE_RECONF_OPT(uint64_t, percent_or_size);
DECLARE_RECONF_OPT(gf_boolean_t, bool);
DECLARE_RECONF_OPT(xlator_t *, xlator);
DECLARE_RECONF_OPT(char *, path);
#define DEFINE_RECONF_OPT(type_t, type, conv) \
int \
xlator_option_reconf_##type (xlator_t *this, dict_t *options, char *key, \
type_t *val_p) \
{ \
int ret = 0; \
volume_option_t *opt = NULL; \
char *def_value = NULL; \
char *set_value = NULL; \
char *value = NULL; \
xlator_t *old_THIS = NULL; \
\
opt = xlator_volume_option_get (this, key); \
if (!opt) { \
gf_log (this->name, GF_LOG_WARNING, \
"unknown option: %s", key); \
ret = -1; \
return ret; \
} \
def_value = opt->default_value; \
ret = dict_get_str (options, key, &set_value); \
\
if (def_value) \
value = def_value; \
if (set_value) \
value = set_value; \
if (!value) { \
gf_log (this->name, GF_LOG_TRACE, "option %s not set", \
key); \
return 0; \
} \
if (value == def_value) { \
gf_log (this->name, GF_LOG_TRACE, \
"option %s using default value %s", \
key, value); \
} else { \
gf_log (this->name, GF_LOG_DEBUG, \
"option %s using set value %s", \
key, value); \
} \
old_THIS = THIS; \
THIS = this; \
ret = conv (value, val_p); \
THIS = old_THIS; \
if (ret) \
return ret; \
ret = xlator_option_validate (this, key, value, opt, NULL); \
return ret; \
}
#define GF_OPTION_RECONF(key, val, opt, type, err_label) do { \
int val_ret = 0; \
val_ret = xlator_option_reconf_##type (THIS, opt, key, \
&(val)); \
if (val_ret) \
goto err_label; \
} while (0)
#endif /* !_OPTIONS_H */
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