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datastore: Add common container based datastores API.

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This change introduces a common container based datastores
management API. This has been done in a few places across
the tree but this consolidates all of the logic into one
place in a generic fashion.

ASTERISK-25999

Change-Id: I72eb15941dcdbc2a37bb00a33ce00f8755bd336a
This commit is contained in:
Joshua Colp
2016-05-05 11:12:59 -03:00
parent 52fbb6389a
commit 94cd351ec4
2 changed files with 138 additions and 0 deletions
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80
main/datastore.c
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@@ -31,6 +31,11 @@ ASTERISK_REGISTER_FILE()
#include "asterisk/datastore.h"
#include "asterisk/utils.h"
#include "asterisk/astobj2.h"
#include "asterisk/uuid.h"
/*! \brief Number of buckets for datastore container */
#define DATASTORE_BUCKETS 53
struct ast_datastore *__ast_datastore_alloc(const struct ast_datastore_info *info, const char *uid,
const char *file, int line, const char *function)
@@ -83,3 +88,78 @@ int ast_datastore_free(struct ast_datastore *datastore)
return res;
}
AO2_STRING_FIELD_HASH_FN(ast_datastore, uid);
AO2_STRING_FIELD_CMP_FN(ast_datastore, uid);
struct ao2_container *ast_datastores_alloc(void)
{
return ao2_container_alloc(DATASTORE_BUCKETS, ast_datastore_hash_fn, ast_datastore_cmp_fn);
}
int ast_datastores_add(struct ao2_container *datastores, struct ast_datastore *datastore)
{
ast_assert(datastore != NULL);
ast_assert(datastore->info != NULL);
ast_assert(!ast_strlen_zero(datastore->uid));
if (!ao2_link(datastores, datastore)) {
return -1;
}
return 0;
}
void ast_datastores_remove(struct ao2_container *datastores, const char *name)
{
ao2_find(datastores, name, OBJ_SEARCH_KEY | OBJ_UNLINK | OBJ_NODATA);
}
struct ast_datastore *ast_datastores_find(struct ao2_container *datastores, const char *name)
{
return ao2_find(datastores, name, OBJ_SEARCH_KEY);
}
static void datastore_destroy(void *obj)
{
struct ast_datastore *datastore = obj;
/* Using the destroy function (if present) destroy the data */
if (datastore->info->destroy != NULL && datastore->data != NULL) {
datastore->info->destroy(datastore->data);
datastore->data = NULL;
}
ast_free((void *) datastore->uid);
datastore->uid = NULL;
}
struct ast_datastore *ast_datastores_alloc_datastore(const struct ast_datastore_info *info, const char *uid)
{
struct ast_datastore *datastore;
char uuid_buf[AST_UUID_STR_LEN];
const char *uid_ptr = uid;
if (!info) {
return NULL;
}
datastore = ao2_alloc(sizeof(*datastore), datastore_destroy);
if (!datastore) {
return NULL;
}
datastore->info = info;
if (ast_strlen_zero(uid)) {
/* They didn't provide an ID so we'll provide one ourself */
uid_ptr = ast_uuid_generate_str(uuid_buf, sizeof(uuid_buf));
}
datastore->uid = ast_strdup(uid_ptr);
if (!datastore->uid) {
ao2_ref(datastore, -1);
return NULL;
}
return datastore;
}