summaryrefslogtreecommitdiffstats
path: root/libglusterfs/src/options.h
blob: 134cc360293e20738b6255221aa7605129ba75d4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
/*
  Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
  This file is part of GlusterFS.

  This file is licensed to you under your choice of the GNU Lesser
  General Public License, version 3 or any later version (LGPLv3 or
  later), or the GNU General Public License, version 2 (GPLv2), in all
  cases as published by the Free Software Foundation.
*/

#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_CLIENT_AUTH_ADDR,
        GF_OPTION_TYPE_MAX,
} volume_option_type_t;

typedef enum {
        GF_OPT_VALIDATE_BOTH = 0,
        GF_OPT_VALIDATE_MIN,
        GF_OPT_VALIDATE_MAX,
} opt_validate_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;
        double                  min;  /* 0 means no range */
        double                  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 */
        /* Required for int options where only the min value
         * is given and is 0. This will cause validation not to
         * happen
         */
        opt_validate_type_t     validate;
} 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);

volume_option_t *
xlator_volume_option_get_list (volume_opt_list_t *vol_list, 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(double, percent);
DECLARE_INIT_OPT(double, percent_or_size);
DECLARE_INIT_OPT(gf_boolean_t, bool);
DECLARE_INIT_OPT(xlator_t *, xlator);
DECLARE_INIT_OPT(char *, path);
DECLARE_INIT_OPT(double, double);
DECLARE_INIT_OPT(uint32_t, time);


#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);                                           \
                *val_p = (type_t)0;                                     \
                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(double, percent);
DECLARE_RECONF_OPT(double, percent_or_size);
DECLARE_RECONF_OPT(gf_boolean_t, bool);
DECLARE_RECONF_OPT(xlator_t *, xlator);
DECLARE_RECONF_OPT(char *, path);
DECLARE_RECONF_OPT(double, double);
DECLARE_RECONF_OPT(uint32_t, time);


#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);                                           \
                *val_p = (type_t)0;                                     \
                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 */