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authorAnand Avati <avati@gluster.com>2011-08-11 16:08:36 +0530
committerAnand Avati <avati@gluster.com>2011-08-18 23:49:03 -0700
commitd2849bd349081b332540713cfeaa561f57356b2a (patch)
tree85ca2a53d39ced5cf7fd8dfb0df8cf292e9d29af /libglusterfs/src/options.h
parent6073fc29bf79fad0b0a3ae423d637ded39a00a3a (diff)
xlator options: revamp xlator option validation/reconfigure code
- move option handling to options.c (new file) - remove duplication of option validation code - remove duplication of gf_log / sprintf - get rid of xlator_t->validate_options - get rid of option validation in rpc-transport - get rid of validate_options() in every xlator - use xlator_volume_option_get to clean up many functions - introduce primitives to init/reconfigure option types Change-Id: I51798af72c8dc0a2b9e017424036eb3667dfc7ff BUG: 3415 Reviewed-on: http://review.gluster.com/235 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@gluster.com>
Diffstat (limited to 'libglusterfs/src/options.h')
-rw-r--r--libglusterfs/src/options.h248
1 files changed, 248 insertions, 0 deletions
diff --git a/libglusterfs/src/options.h b/libglusterfs/src/options.h
new file mode 100644
index 00000000000..f95040c26c8
--- /dev/null
+++ b/libglusterfs/src/options.h
@@ -0,0 +1,248 @@
+/*
+ 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_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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