res_sorcery_realtime.c File Reference

Sorcery Realtime Object Wizard. More...

#include "asterisk.h"
#include <regex.h>
#include "asterisk/module.h"
#include "asterisk/sorcery.h"

Include dependency graph for res_sorcery_realtime.c:

Go to the source code of this file.

Data Structures
struct	sorcery_config
	Structure for storing configuration file sourced objects. More...

Macros
#define	UUID_FIELD   "id"
	They key field used to store the unique identifier for the object.

Enumerations
enum	unqualified_fetch { UNQUALIFIED_FETCH_NO , UNQUALIFIED_FETCH_WARN , UNQUALIFIED_FETCH_YES , UNQUALIFIED_FETCH_ERROR }

Functions
static void	__reg_module (void)
static void	__unreg_module (void)
struct ast_module *	AST_MODULE_SELF_SYM (void)
static int	load_module (void)
static void	sorcery_realtime_close (void *data)
static int	sorcery_realtime_create (const struct ast_sorcery *sorcery, void *data, void *object)
static int	sorcery_realtime_delete (const struct ast_sorcery *sorcery, void *data, void *object)
static struct ast_variable *	sorcery_realtime_filter_objectset (struct ast_variable *objectset, struct ast_variable **id, const struct ast_sorcery *sorcery, const char *type)
	Internal helper function which returns a filtered objectset.
static void *	sorcery_realtime_open (const char *data)
static void *	sorcery_realtime_retrieve_fields (const struct ast_sorcery *sorcery, void *data, const char *type, const struct ast_variable *fields)
static void *	sorcery_realtime_retrieve_id (const struct ast_sorcery *sorcery, void *data, const char *type, const char *id)
static void	sorcery_realtime_retrieve_multiple (const struct ast_sorcery *sorcery, void *data, const char *type, struct ao2_container *objects, const struct ast_variable *fields)
static void	sorcery_realtime_retrieve_prefix (const struct ast_sorcery *sorcery, void *data, const char *type, struct ao2_container *objects, const char *prefix, const size_t prefix_len)
static void	sorcery_realtime_retrieve_regex (const struct ast_sorcery *sorcery, void *data, const char *type, struct ao2_container *objects, const char *regex)
static int	sorcery_realtime_update (const struct ast_sorcery *sorcery, void *data, void *object)
static int	unload_module (void)

Variables
static struct ast_module_info	__mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_GLOBAL_SYMBOLS | AST_MODFLAG_LOAD_ORDER , .description = "Sorcery Realtime Object Wizard" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .support_level = AST_MODULE_SUPPORT_CORE, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_REALTIME_DRIVER, }
static const struct ast_module_info *	ast_module_info = &__mod_info
static struct ast_sorcery_wizard	realtime_object_wizard

Detailed Description

Sorcery Realtime Object Wizard.

Author

Joshua Colp jcolp.nosp@m.@dig.nosp@m.ium.c.nosp@m.om

Definition in file res_sorcery_realtime.c.

Macro Definition Documentation

UUID_FIELD

#define UUID_FIELD   "id"

They key field used to store the unique identifier for the object.

Definition at line 39 of file res_sorcery_realtime.c.

Enumeration Type Documentation

unqualified_fetch

enum unqualified_fetch

Enumerator
UNQUALIFIED_FETCH_NO
UNQUALIFIED_FETCH_WARN
UNQUALIFIED_FETCH_YES
UNQUALIFIED_FETCH_ERROR

Definition at line 41 of file res_sorcery_realtime.c.

                       {
    UNQUALIFIED_FETCH_NO,
    UNQUALIFIED_FETCH_WARN,
    UNQUALIFIED_FETCH_YES,
    UNQUALIFIED_FETCH_ERROR,
};

Function Documentation

__reg_module()

static void __reg_module ( void  )

static

Definition at line 407 of file res_sorcery_realtime.c.

__unreg_module()

static void __unreg_module ( void  )

static

Definition at line 407 of file res_sorcery_realtime.c.

AST_MODULE_SELF_SYM()

struct ast_module * AST_MODULE_SELF_SYM

(

void

)

Definition at line 407 of file res_sorcery_realtime.c.

load_module()

static int load_module ( void  )

static

Definition at line 387 of file res_sorcery_realtime.c.

{
    if (ast_sorcery_wizard_register(&realtime_object_wizard)) {
        return AST_MODULE_LOAD_DECLINE;
    }
 
    return AST_MODULE_LOAD_SUCCESS;
}

References AST_MODULE_LOAD_DECLINE, AST_MODULE_LOAD_SUCCESS, ast_sorcery_wizard_register, and realtime_object_wizard.

sorcery_realtime_close()

static void sorcery_realtime_close ( void *  data )

static

Definition at line 382 of file res_sorcery_realtime.c.

{
    ast_free(data);
}

References ast_free.

sorcery_realtime_create()

static int sorcery_realtime_create ( const struct ast_sorcery *  sorcery, void *  data, void *  object  )

static

Definition at line 80 of file res_sorcery_realtime.c.

{
    struct sorcery_config *config = data;
    RAII_VAR(struct ast_variable *, fields, ast_sorcery_objectset_create(sorcery, object), ast_variables_destroy);
    struct ast_variable *id = ast_variable_new(UUID_FIELD, ast_sorcery_object_get_id(object), "");
 
    if (!fields || !id) {
        ast_variables_destroy(id);
        return -1;
    }
 
    /* Place the identifier at the front for sanity sake */
    id->next = fields;
    fields = id;
 
    return (ast_store_realtime_fields(config->family, fields) <= 0) ? -1 : 0;
}

References ast_sorcery_object_get_id(), ast_sorcery_objectset_create, ast_store_realtime_fields(), ast_variable_new, ast_variables_destroy(), config, id, RAII_VAR, sorcery, and UUID_FIELD.

sorcery_realtime_delete()

static int sorcery_realtime_delete ( const struct ast_sorcery *  sorcery, void *  data, void *  object  )

static

Definition at line 322 of file res_sorcery_realtime.c.

{
    struct sorcery_config *config = data;
 
    return (ast_destroy_realtime_fields(config->family, UUID_FIELD, ast_sorcery_object_get_id(object), NULL) <= 0) ? -1 : 0;
}

References ast_destroy_realtime_fields(), ast_sorcery_object_get_id(), config, NULL, and UUID_FIELD.

sorcery_realtime_filter_objectset()

static struct ast_variable * sorcery_realtime_filter_objectset ( struct ast_variable *  objectset, struct ast_variable **  id, const struct ast_sorcery *  sorcery, const char *  type  )

static

Internal helper function which returns a filtered objectset.

The following are filtered out of the objectset:

• The id field. This is returned to the caller in an out parameter.
• Fields that are not registered with sorcery.

Parameters

	objectset	Objectset to filter.
[out]	id	The ID of the sorcery object, as found in the objectset.
	sorcery	The sorcery instance that is requesting an objectset.
	type	The object type

Returns

The filtered objectset

Definition at line 111 of file res_sorcery_realtime.c.

{
    struct ast_variable *previous = NULL, *field = objectset;
    struct ast_sorcery_object_type *object_type;
 
    object_type = ast_sorcery_get_object_type(sorcery, type);
    if (!object_type) {
        ast_log(LOG_WARNING, "Unknown sorcery object type %s. Expect errors\n", type);
        /* Continue since we still want to filter out the id */
    }
 
    while (field) {
        int remove_field = 0;
        int delete_field = 0;
 
        if (!strcmp(field->name, UUID_FIELD)) {
            *id = field;
            remove_field = 1;
        } else if (object_type &&
                !ast_sorcery_is_object_field_registered(object_type, field->name)) {
            ast_debug(1, "Filtering out realtime field '%s' from retrieval\n", field->name);
            remove_field = 1;
            delete_field = 1;
        }
 
        if (remove_field) {
            struct ast_variable *removed;
 
            if (previous) {
                previous->next = field->next;
            } else {
                objectset = field->next;
            }
 
            removed = field;
            field = field->next;
            removed->next = NULL;
            if (delete_field) {
                ast_variables_destroy(removed);
            }
        } else {
            previous = field;
            field = field->next;
        }
    }
 
    ao2_cleanup(object_type);
 
    return objectset;
}

References ao2_cleanup, ast_debug, ast_log, ast_sorcery_get_object_type(), ast_sorcery_is_object_field_registered(), ast_variables_destroy(), LOG_WARNING, ast_sorcery_object_type::name, ast_variable::next, NULL, sorcery, type, and UUID_FIELD.

Referenced by sorcery_realtime_retrieve_fields(), and sorcery_realtime_retrieve_multiple().

sorcery_realtime_open()

static void * sorcery_realtime_open ( const char *  data )

static

Definition at line 329 of file res_sorcery_realtime.c.

{
    struct sorcery_config *config;
    char *tmp;
    char *family;
    char *option;
 
    /* We require a prefix for family string generation, or else stuff could mix together */
    if (ast_strlen_zero(data)) {
        return NULL;
    }
 
    tmp = ast_strdupa(data);
    family = strsep(&tmp, ",");
 
    if (!ast_realtime_is_mapping_defined(family)) {
        return NULL;
    }
 
    config = ast_calloc(1, sizeof(*config) + strlen(family) + 1);
    if (!config) {
        return NULL;
    }
 
    strcpy(config->family, family); /* Safe */
    config->fetch = UNQUALIFIED_FETCH_YES;
 
    while ((option = strsep(&tmp, ","))) {
        char *name = strsep(&option, "=");
        char *value = option;
 
        if (!strcasecmp(name, "allow_unqualified_fetch")) {
            if (ast_strlen_zero(value) || !strcasecmp(value, "yes")) {
                config->fetch = UNQUALIFIED_FETCH_YES;
            } else if (!strcasecmp(value, "no")) {
                config->fetch = UNQUALIFIED_FETCH_NO;
            } else if (!strcasecmp(value, "warn")) {
                config->fetch = UNQUALIFIED_FETCH_WARN;
            } else if (!strcasecmp(value, "error")) {
                config->fetch = UNQUALIFIED_FETCH_ERROR;
            } else {
                ast_log(LOG_ERROR, "Unrecognized value in %s:%s: '%s'\n", family, name, value);
                return NULL;
            }
        } else {
            ast_log(LOG_ERROR, "Unrecognized option in %s: '%s'\n", family, name);
            return NULL;
        }
    }
 
    return config;
}

References ast_calloc, ast_log, ast_realtime_is_mapping_defined(), ast_strdupa, ast_strlen_zero(), config, sorcery_config::family, LOG_ERROR, name, NULL, strsep(), UNQUALIFIED_FETCH_ERROR, UNQUALIFIED_FETCH_NO, UNQUALIFIED_FETCH_WARN, UNQUALIFIED_FETCH_YES, and value.

sorcery_realtime_retrieve_fields()

static void * sorcery_realtime_retrieve_fields ( const struct ast_sorcery *  sorcery, void *  data, const char *  type, const struct ast_variable *  fields  )

static

Definition at line 163 of file res_sorcery_realtime.c.

{
    struct sorcery_config *config = data;
    RAII_VAR(struct ast_variable *, objectset, NULL, ast_variables_destroy);
    RAII_VAR(struct ast_variable *, id, NULL, ast_variables_destroy);
    void *object = NULL;
 
    if (!(objectset = ast_load_realtime_fields(config->family, fields))) {
        return NULL;
    }
 
    objectset = sorcery_realtime_filter_objectset(objectset, &id, sorcery, type);
 
    if (!id
        || !(object = ast_sorcery_alloc(sorcery, type, id->value))
        || ast_sorcery_objectset_apply(sorcery, object, objectset)) {
        ao2_cleanup(object);
        return NULL;
    }
 
    return object;
}

References ao2_cleanup, ast_load_realtime_fields(), ast_sorcery_alloc(), ast_sorcery_objectset_apply(), ast_variables_destroy(), config, id, NULL, RAII_VAR, sorcery, sorcery_realtime_filter_objectset(), and type.

Referenced by sorcery_realtime_retrieve_id().

sorcery_realtime_retrieve_id()

static void * sorcery_realtime_retrieve_id ( const struct ast_sorcery *  sorcery, void *  data, const char *  type, const char *  id  )

static

Definition at line 186 of file res_sorcery_realtime.c.

{
    RAII_VAR(struct ast_variable *, fields, ast_variable_new(UUID_FIELD, id, ""), ast_variables_destroy);
 
    return sorcery_realtime_retrieve_fields(sorcery, data, type, fields);
}

References ast_variable_new, ast_variables_destroy(), RAII_VAR, sorcery, sorcery_realtime_retrieve_fields(), type, and UUID_FIELD.

sorcery_realtime_retrieve_multiple()

static void sorcery_realtime_retrieve_multiple ( const struct ast_sorcery *  sorcery, void *  data, const char *  type, struct ao2_container *  objects, const struct ast_variable *  fields  )

static

Definition at line 193 of file res_sorcery_realtime.c.

{
    struct sorcery_config *config = data;
    RAII_VAR(struct ast_config *, rows, NULL, ast_config_destroy);
    RAII_VAR(struct ast_variable *, all, NULL, ast_variables_destroy);
    struct ast_category *row = NULL;
 
    if (!fields) {
        char field[strlen(UUID_FIELD) + 6], value[2];
 
        if (config->fetch == UNQUALIFIED_FETCH_NO) {
            return;
        }
        if (config->fetch == UNQUALIFIED_FETCH_ERROR) {
            ast_log(LOG_ERROR, "Unqualified fetch prevented on %s\n", config->family);
            return;
        }
        if (config->fetch == UNQUALIFIED_FETCH_WARN) {
            ast_log(LOG_WARNING, "Unqualified fetch requested on %s\n", config->family);
        }
 
        /* If no fields have been specified we want all rows, so trick realtime into doing it */
        snprintf(field, sizeof(field), "%s LIKE", UUID_FIELD);
        snprintf(value, sizeof(value), "%%");
 
        if (!(all = ast_variable_new(field, value, ""))) {
            return;
        }
 
        fields = all;
    }
 
    if (!(rows = ast_load_realtime_multientry_fields(config->family, fields))) {
        return;
    }
 
    while ((row = ast_category_browse_filtered(rows, NULL, row, NULL))) {
        struct ast_variable *objectset = ast_category_detach_variables(row);
        RAII_VAR(struct ast_variable *, id, NULL, ast_variables_destroy);
        RAII_VAR(void *, object, NULL, ao2_cleanup);
 
        objectset = sorcery_realtime_filter_objectset(objectset, &id, sorcery, type);
 
        if (id
            && (object = ast_sorcery_alloc(sorcery, type, id->value))
            && !ast_sorcery_objectset_apply(sorcery, object, objectset)) {
            ao2_link(objects, object);
        }
 
        ast_variables_destroy(objectset);
    }
}

References ao2_cleanup, ao2_link, ast_category_browse_filtered(), ast_category_detach_variables(), ast_config_destroy(), ast_load_realtime_multientry_fields(), ast_log, ast_sorcery_alloc(), ast_sorcery_objectset_apply(), ast_variable_new, ast_variables_destroy(), config, id, LOG_ERROR, LOG_WARNING, NULL, RAII_VAR, sorcery, sorcery_realtime_filter_objectset(), type, UNQUALIFIED_FETCH_ERROR, UNQUALIFIED_FETCH_NO, UNQUALIFIED_FETCH_WARN, UUID_FIELD, and value.

Referenced by sorcery_realtime_retrieve_prefix(), and sorcery_realtime_retrieve_regex().

sorcery_realtime_retrieve_prefix()

static void sorcery_realtime_retrieve_prefix ( const struct ast_sorcery *  sorcery, void *  data, const char *  type, struct ao2_container *  objects, const char *  prefix, const size_t  prefix_len  )

static

Definition at line 268 of file res_sorcery_realtime.c.

{
    char field[strlen(UUID_FIELD) + 6], value[prefix_len + 2];
    RAII_VAR(struct ast_variable *, fields, NULL, ast_variables_destroy);
 
    if (prefix_len) {
        snprintf(field, sizeof(field), "%s LIKE", UUID_FIELD);
        snprintf(value, sizeof(value), "%.*s%%", (int) prefix_len, prefix);
        if (!(fields = ast_variable_new(field, value, ""))) {
            return;
        }
    }
 
    sorcery_realtime_retrieve_multiple(sorcery, data, type, objects, fields);
}

References ast_variable_new, ast_variables_destroy(), NULL, prefix, RAII_VAR, sorcery, sorcery_realtime_retrieve_multiple(), type, UUID_FIELD, and value.

sorcery_realtime_retrieve_regex()

static void sorcery_realtime_retrieve_regex ( const struct ast_sorcery *  sorcery, void *  data, const char *  type, struct ao2_container *  objects, const char *  regex  )

static

Definition at line 246 of file res_sorcery_realtime.c.

{
    char field[strlen(UUID_FIELD) + 6], value[strlen(regex) + 3];
    RAII_VAR(struct ast_variable *, fields, NULL, ast_variables_destroy);
 
    if (!ast_strlen_zero(regex)) {
        /* The realtime API provides no direct ability to do regex so for now we support a limited subset using pattern matching */
        snprintf(field, sizeof(field), "%s LIKE", UUID_FIELD);
        if (regex[0] == '^') {
            snprintf(value, sizeof(value), "%s%%", regex + 1);
        } else {
            snprintf(value, sizeof(value), "%%%s%%", regex);
        }
 
        if (!(fields = ast_variable_new(field, value, ""))) {
            return;
        }
    }
 
    sorcery_realtime_retrieve_multiple(sorcery, data, type, objects, fields);
}

References ast_strlen_zero(), ast_variable_new, ast_variables_destroy(), NULL, RAII_VAR, regex(), sorcery, sorcery_realtime_retrieve_multiple(), type, UUID_FIELD, and value.

sorcery_realtime_update()

static int sorcery_realtime_update ( const struct ast_sorcery *  sorcery, void *  data, void *  object  )

static

Definition at line 285 of file res_sorcery_realtime.c.

{
    struct sorcery_config *config = data;
    RAII_VAR(struct ast_variable *, fields, ast_sorcery_objectset_create(sorcery, object), ast_variables_destroy);
    int ret;
    struct ast_variable *id;
 
    if (!fields) {
        return -1;
    }
 
    ret = ast_update_realtime_fields(config->family, UUID_FIELD, ast_sorcery_object_get_id(object), fields);
    if (ret < 0) {
        /* An error occurred */
        return -1;
    } else if (ret > 0) {
        /* The object was updated */
        return 0;
    }
 
    if (!ast_sorcery_update_or_create_on_update_miss) {
        /* The object does not exist (nothing was updated) and fallback disabled */
        return -1;
    }
 
    id = ast_variable_new(UUID_FIELD, ast_sorcery_object_get_id(object), "");
    if (!id) {
        return -1;
    }
 
    /* Place the identifier at the front for sanity sake */
    id->next = fields;
    fields = id;
 
    return (ast_store_realtime_fields(config->family, fields) <= 0) ? -1 : 0;
}

References ast_sorcery_object_get_id(), ast_sorcery_objectset_create, ast_sorcery_update_or_create_on_update_miss, ast_store_realtime_fields(), ast_update_realtime_fields(), ast_variable_new, ast_variables_destroy(), config, id, RAII_VAR, sorcery, and UUID_FIELD.

unload_module()

static int unload_module ( void  )

static

Definition at line 396 of file res_sorcery_realtime.c.

{
    ast_sorcery_wizard_unregister(&realtime_object_wizard);
    return 0;
}

References ast_sorcery_wizard_unregister(), and realtime_object_wizard.

Variable Documentation

__mod_info

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_GLOBAL_SYMBOLS | AST_MODFLAG_LOAD_ORDER , .description = "Sorcery Realtime Object Wizard" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .support_level = AST_MODULE_SUPPORT_CORE, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_REALTIME_DRIVER, }

static

Definition at line 407 of file res_sorcery_realtime.c.

ast_module_info

const struct ast_module_info* ast_module_info = &__mod_info

static

Definition at line 407 of file res_sorcery_realtime.c.

realtime_object_wizard

struct ast_sorcery_wizard realtime_object_wizard

static

Definition at line 66 of file res_sorcery_realtime.c.

                                                          {
    .name = "realtime",
    .open = sorcery_realtime_open,
    .create = sorcery_realtime_create,
    .retrieve_id = sorcery_realtime_retrieve_id,
    .retrieve_fields = sorcery_realtime_retrieve_fields,
    .retrieve_multiple = sorcery_realtime_retrieve_multiple,
    .retrieve_regex = sorcery_realtime_retrieve_regex,
    .retrieve_prefix = sorcery_realtime_retrieve_prefix,
    .update = sorcery_realtime_update,
    .delete = sorcery_realtime_delete,
    .close = sorcery_realtime_close,
};

Referenced by load_module(), and unload_module().