Code

object system: Introduced a 'clone' callback for types.
[sysdb.git] / src / core / store.c
index 04968102713822e05174e0437682a542528855e0..7af662f8aa66a7ac4e6c7fd8489157c000915b8c 100644 (file)
@@ -82,16 +82,20 @@ sdb_cmp_store_obj_with_name(const sdb_object_t *a, const sdb_object_t *b)
        return strcasecmp(obj->name, lookup->obj_name);
 } /* sdb_cmp_store_obj_with_name */
 
+/*
+ * private types
+ */
+
 static int
 sdb_host_init(sdb_object_t *obj, va_list ap)
 {
        const char *name = va_arg(ap, const char *);
 
-       SDB_HOST(obj)->host_name = strdup(name);
-       if (! SDB_HOST(obj)->host_name)
+       SDB_HOST(obj)->_name = strdup(name);
+       if (! SDB_HOST(obj)->_name)
                return -1;
 
-       SDB_HOST(obj)->host_last_update = sdb_gettime();
+       SDB_HOST(obj)->_last_update = sdb_gettime();
        /* ignore errors -> last_update will be updated later */
 
        SDB_HOST(obj)->attributes = sdb_llist_create();
@@ -108,8 +112,8 @@ sdb_host_destroy(sdb_object_t *obj)
 {
        assert(obj);
 
-       if (SDB_HOST(obj)->host_name)
-               free(SDB_HOST(obj)->host_name);
+       if (SDB_HOST(obj)->_name)
+               free(SDB_HOST(obj)->_name);
 
        if (SDB_HOST(obj)->attributes)
                sdb_llist_destroy(SDB_HOST(obj)->attributes);
@@ -117,6 +121,39 @@ sdb_host_destroy(sdb_object_t *obj)
                sdb_llist_destroy(SDB_HOST(obj)->services);
 } /* sdb_host_destroy */
 
+static sdb_object_t *
+sdb_host_do_clone(const sdb_object_t *obj)
+{
+       const sdb_host_t *host = (const sdb_host_t *)obj;
+       sdb_host_t *new;
+
+       new = sdb_host_create(host->_name);
+       if (! new)
+               return NULL;
+
+       /* make sure these are initialized; else sdb_object_deref() might access
+        * arbitrary memory in case of an error */
+       new->services = new->attributes = NULL;
+
+       if (host->attributes) {
+               new->attributes = sdb_llist_clone(host->attributes);
+               if (! new->attributes) {
+                       sdb_object_deref(SDB_OBJ(new));
+                       return NULL;
+               }
+       }
+
+       new->_last_update = host->_last_update;
+       if (host->services) {
+               new->services = sdb_llist_clone(host->services);
+               if (! new->services) {
+                       sdb_object_deref(SDB_OBJ(new));
+                       return NULL;
+               }
+       }
+       return SDB_OBJ(new);
+} /* sdb_host_do_clone */
+
 static int
 sdb_attr_init(sdb_object_t *obj, va_list ap)
 {
@@ -125,13 +162,13 @@ sdb_attr_init(sdb_object_t *obj, va_list ap)
        const char *value = va_arg(ap, const char *);
 
        SDB_ATTR(obj)->hostname = strdup(hostname);
-       SDB_ATTR(obj)->attr_name = strdup(name);
+       SDB_ATTR(obj)->_name = strdup(name);
        SDB_ATTR(obj)->attr_value = strdup(value);
        if ((! SDB_ATTR(obj)->hostname)
-                       || (! SDB_ATTR(obj)->attr_name) || (! SDB_ATTR(obj)->attr_value))
+                       || (! SDB_ATTR(obj)->_name) || (! SDB_ATTR(obj)->attr_value))
                return -1;
 
-       SDB_ATTR(obj)->attr_last_update = sdb_gettime();
+       SDB_ATTR(obj)->_last_update = sdb_gettime();
        return 0;
 } /* sdb_attr_init */
 
@@ -142,12 +179,27 @@ sdb_attr_destroy(sdb_object_t *obj)
 
        if (SDB_ATTR(obj)->hostname)
                free(SDB_ATTR(obj)->hostname);
-       if (SDB_ATTR(obj)->attr_name)
-               free(SDB_ATTR(obj)->attr_name);
+       if (SDB_ATTR(obj)->_name)
+               free(SDB_ATTR(obj)->_name);
        if (SDB_ATTR(obj)->attr_value)
                free(SDB_ATTR(obj)->attr_value);
 } /* sdb_attr_destroy */
 
+static sdb_object_t *
+sdb_attr_clone(const sdb_object_t *obj)
+{
+       const sdb_attribute_t *attr = (const sdb_attribute_t *)obj;
+       sdb_attribute_t *new;
+
+       new = sdb_attribute_create(attr->hostname,
+                       attr->_name, attr->attr_value);
+       if (! new)
+               return NULL;
+
+       new->_last_update = attr->_last_update;
+       return SDB_OBJ(new);
+} /* sdb_attr_clone */
+
 static int
 sdb_svc_init(sdb_object_t *obj, va_list ap)
 {
@@ -155,11 +207,11 @@ sdb_svc_init(sdb_object_t *obj, va_list ap)
        const char *name = va_arg(ap, const char *);
 
        SDB_SVC(obj)->hostname = strdup(hostname);
-       SDB_SVC(obj)->svc_name = strdup(name);
-       if ((! SDB_SVC(obj)->hostname) || (! SDB_SVC(obj)->svc_name))
+       SDB_SVC(obj)->_name = strdup(name);
+       if ((! SDB_SVC(obj)->hostname) || (! SDB_SVC(obj)->_name))
                return -1;
 
-       SDB_SVC(obj)->svc_last_update = sdb_gettime();
+       SDB_SVC(obj)->_last_update = sdb_gettime();
        /* ignore errors -> last_update will be updated later */
        return 0;
 } /* sdb_svc_init */
@@ -171,10 +223,48 @@ sdb_svc_destroy(sdb_object_t *obj)
 
        if (SDB_SVC(obj)->hostname)
                free(SDB_SVC(obj)->hostname);
-       if (SDB_SVC(obj)->svc_name)
-               free(SDB_SVC(obj)->svc_name);
+       if (SDB_SVC(obj)->_name)
+               free(SDB_SVC(obj)->_name);
 } /* sdb_svc_destroy */
 
+static sdb_object_t *
+sdb_svc_clone(const sdb_object_t *obj)
+{
+       const sdb_service_t *svc = (const sdb_service_t *)obj;
+       sdb_service_t *new;
+
+       new = sdb_service_create(svc->hostname, svc->_name);
+       if (! new)
+               return NULL;
+
+       new->_last_update = svc->_last_update;
+       return SDB_OBJ(new);
+} /* sdb_svc_clone */
+
+static sdb_type_t sdb_host_type = {
+       sizeof(sdb_host_t),
+
+       sdb_host_init,
+       sdb_host_destroy,
+       sdb_host_do_clone
+};
+
+static sdb_type_t sdb_attr_type = {
+       sizeof(sdb_attribute_t),
+
+       sdb_attr_init,
+       sdb_attr_destroy,
+       sdb_attr_clone
+};
+
+static sdb_type_t sdb_svc_type = {
+       sizeof(sdb_service_t),
+
+       sdb_svc_init,
+       sdb_svc_destroy,
+       sdb_svc_clone
+};
+
 /*
  * public API
  */
@@ -187,8 +277,7 @@ sdb_host_create(const char *name)
        if (! name)
                return NULL;
 
-       obj = sdb_object_create(sizeof(sdb_host_t), sdb_host_init,
-                       sdb_host_destroy, name);
+       obj = sdb_object_create(sdb_host_type, name);
        if (! obj)
                return NULL;
        return SDB_HOST(obj);
@@ -197,33 +286,7 @@ sdb_host_create(const char *name)
 sdb_host_t *
 sdb_host_clone(const sdb_host_t *host)
 {
-       sdb_host_t *new;
-
-       new = sdb_host_create(host->host_name);
-       if (! new)
-               return NULL;
-
-       /* make sure these are initialized; else sdb_object_deref() might access
-        * arbitrary memory in case of an error */
-       new->services = new->attributes = NULL;
-
-       if (host->attributes) {
-               new->attributes = sdb_llist_clone(host->attributes);
-               if (! new->attributes) {
-                       sdb_object_deref(SDB_OBJ(new));
-                       return NULL;
-               }
-       }
-
-       new->host_last_update = host->host_last_update;
-       if (host->services) {
-               new->services = sdb_llist_clone(host->services);
-               if (! new->services) {
-                       sdb_object_deref(SDB_OBJ(new));
-                       return NULL;
-               }
-       }
-       return new;
+       return SDB_HOST(sdb_host_do_clone((const sdb_object_t *)host));
 } /* sdb_host_clone */
 
 int
@@ -235,10 +298,10 @@ sdb_store_host(const sdb_host_t *host)
        sdb_host_t *old;
        int status = 0;
 
-       if ((! host) || (! host->host_name))
+       if ((! host) || (! host->_name))
                return -1;
 
-       last_update = host->host_last_update;
+       last_update = host->_last_update;
        if (last_update <= 0)
                last_update = sdb_gettime();
 
@@ -251,29 +314,29 @@ sdb_store_host(const sdb_host_t *host)
                }
        }
 
-       lookup.obj_name = host->host_name;
+       lookup.obj_name = host->_name;
        old = SDB_HOST(sdb_llist_search(host_list, (const sdb_object_t *)&lookup,
                                sdb_cmp_store_obj_with_name));
 
        if (old) {
-               if (old->host_last_update > last_update) {
+               if (old->_last_update > last_update) {
                        sdb_log(SDB_LOG_DEBUG, "store: Cannot update host '%s' - "
-                                       "value too old (%"PRIscTIME" < %"PRIscTIME")\n",
-                                       host->host_name, last_update, old->host_last_update);
+                                       "value too old (%"PRIscTIME" < %"PRIscTIME")",
+                                       host->_name, last_update, old->_last_update);
                        /* don't report an error; the host may be updated by multiple
                         * backends */
                        status = 1;
                }
                else {
-                       old->host_last_update = last_update;
+                       old->_last_update = last_update;
                }
        }
        else {
                sdb_host_t *new = sdb_host_clone(host);
                if (! new) {
                        char errbuf[1024];
-                       sdb_log(SDB_LOG_ERR, "store: Failed to clone host object: "
-                                       "%s\n", sdb_strerror(errno, errbuf, sizeof(errbuf)));
+                       sdb_log(SDB_LOG_ERR, "store: Failed to clone host object: %s",
+                                       sdb_strerror(errno, errbuf, sizeof(errbuf)));
                        pthread_rwlock_unlock(&host_lock);
                        return -1;
                }
@@ -282,7 +345,7 @@ sdb_store_host(const sdb_host_t *host)
                        if (! (new->attributes = sdb_llist_create())) {
                                char errbuf[1024];
                                sdb_log(SDB_LOG_ERR, "store: Failed to initialize "
-                                               "host object '%s': %s\n", host->host_name,
+                                               "host object '%s': %s", host->_name,
                                                sdb_strerror(errno, errbuf, sizeof(errbuf)));
                                sdb_object_deref(SDB_OBJ(new));
                                pthread_rwlock_unlock(&host_lock);
@@ -294,7 +357,7 @@ sdb_store_host(const sdb_host_t *host)
                        if (! (new->services = sdb_llist_create())) {
                                char errbuf[1024];
                                sdb_log(SDB_LOG_ERR, "store: Failed to initialize "
-                                               "host object '%s': %s\n", host->host_name,
+                                               "host object '%s': %s", host->_name,
                                                sdb_strerror(errno, errbuf, sizeof(errbuf)));
                                sdb_object_deref(SDB_OBJ(new));
                                pthread_rwlock_unlock(&host_lock);
@@ -340,8 +403,7 @@ sdb_attribute_create(const char *hostname,
        if ((! hostname) || (! name) || (! value))
                return NULL;
 
-       obj = sdb_object_create(sizeof(sdb_attribute_t), sdb_attr_init,
-                       sdb_attr_destroy, hostname, name, value);
+       obj = sdb_object_create(sdb_attr_type, hostname, name, value);
        if (! obj)
                return NULL;
        return SDB_ATTR(obj);
@@ -350,15 +412,7 @@ sdb_attribute_create(const char *hostname,
 sdb_attribute_t *
 sdb_attribute_clone(const sdb_attribute_t *attr)
 {
-       sdb_attribute_t *new;
-
-       new = sdb_attribute_create(attr->hostname,
-                       attr->attr_name, attr->attr_value);
-       if (! new)
-               return NULL;
-
-       new->attr_last_update = attr->attr_last_update;
-       return new;
+       return SDB_ATTR(sdb_attr_clone((const sdb_object_t *)attr));
 } /* sdb_attribute_clone */
 
 int
@@ -376,7 +430,7 @@ sdb_store_attribute(const sdb_attribute_t *attr)
        if (! attr)
                return -1;
 
-       last_update = attr->attr_last_update;
+       last_update = attr->_last_update;
        if (last_update <= 0)
                last_update = sdb_gettime();
 
@@ -394,21 +448,21 @@ sdb_store_attribute(const sdb_attribute_t *attr)
                return -1;
        }
 
-       lookup.obj_name = attr->attr_name;
+       lookup.obj_name = attr->_name;
        old = SDB_ATTR(sdb_llist_search(host->attributes,
                                (const sdb_object_t *)&lookup,
                                sdb_cmp_store_obj_with_name));
 
        if (old) {
-               if (old->host_last_update > last_update) {
+               if (old->_last_update > last_update) {
                        sdb_log(SDB_LOG_DEBUG, "store: Cannot update attribute "
-                                       "'%s/%s' - value too old (%"PRIscTIME" < %"PRIscTIME")\n",
-                                       attr->hostname, attr->attr_name, last_update,
-                                       old->host_last_update);
+                                       "'%s/%s' - value too old (%"PRIscTIME" < %"PRIscTIME")",
+                                       attr->hostname, attr->_name, last_update,
+                                       old->_last_update);
                        status = 1;
                }
                else {
-                       old->attr_last_update = last_update;
+                       old->_last_update = last_update;
                }
        }
        else {
@@ -416,7 +470,7 @@ sdb_store_attribute(const sdb_attribute_t *attr)
                if (! new) {
                        char errbuf[1024];
                        sdb_log(SDB_LOG_ERR, "store: Failed to clone attribute "
-                                       "object: %s\n", sdb_strerror(errno, errbuf, sizeof(errbuf)));
+                                       "object: %s", sdb_strerror(errno, errbuf, sizeof(errbuf)));
                        pthread_rwlock_unlock(&host_lock);
                        return -1;
                }
@@ -440,8 +494,7 @@ sdb_service_create(const char *hostname, const char *name)
        if ((! hostname) || (! name))
                return NULL;
 
-       obj = sdb_object_create(sizeof(sdb_service_t), sdb_svc_init,
-                       sdb_svc_destroy, hostname, name);
+       obj = sdb_object_create(sdb_svc_type, hostname, name);
        if (! obj)
                return NULL;
        return SDB_SVC(obj);
@@ -450,14 +503,7 @@ sdb_service_create(const char *hostname, const char *name)
 sdb_service_t *
 sdb_service_clone(const sdb_service_t *svc)
 {
-       sdb_service_t *new;
-
-       new = sdb_service_create(svc->hostname, svc->svc_name);
-       if (! new)
-               return NULL;
-
-       new->svc_last_update = svc->svc_last_update;
-       return new;
+       return SDB_SVC(sdb_svc_clone((const sdb_object_t *)svc));
 } /* sdb_service_clone */
 
 int
@@ -475,7 +521,7 @@ sdb_store_service(const sdb_service_t *svc)
        if (! svc)
                return -1;
 
-       last_update = svc->svc_last_update;
+       last_update = svc->_last_update;
        if (last_update <= 0)
                last_update = sdb_gettime();
 
@@ -493,20 +539,20 @@ sdb_store_service(const sdb_service_t *svc)
                return -1;
        }
 
-       lookup.obj_name = svc->svc_name;
+       lookup.obj_name = svc->_name;
        old = SDB_SVC(sdb_llist_search(host->services, (const sdb_object_t *)&lookup,
                                sdb_cmp_store_obj_with_name));
 
        if (old) {
-               if (old->host_last_update > last_update) {
+               if (old->_last_update > last_update) {
                        sdb_log(SDB_LOG_DEBUG, "store: Cannot update service "
-                                       "'%s/%s' - value too old (%"PRIscTIME" < %"PRIscTIME")\n",
-                                       svc->hostname, svc->svc_name, last_update,
-                                       old->host_last_update);
+                                       "'%s/%s' - value too old (%"PRIscTIME" < %"PRIscTIME")",
+                                       svc->hostname, svc->_name, last_update,
+                                       old->_last_update);
                        status = 1;
                }
                else {
-                       old->svc_last_update = last_update;
+                       old->_last_update = last_update;
                }
        }
        else {
@@ -514,7 +560,7 @@ sdb_store_service(const sdb_service_t *svc)
                if (! new) {
                        char errbuf[1024];
                        sdb_log(SDB_LOG_ERR, "store: Failed to clone service "
-                                       "object: %s\n", sdb_strerror(errno, errbuf, sizeof(errbuf)));
+                                       "object: %s", sdb_strerror(errno, errbuf, sizeof(errbuf)));
                        pthread_rwlock_unlock(&host_lock);
                        return -1;
                }
@@ -575,12 +621,12 @@ sdb_store_dump(FILE *fh)
                assert(host);
 
                if (! sdb_strftime(time_str, sizeof(time_str),
-                                       "%F %T %z", host->host_last_update))
+                                       "%F %T %z", host->_last_update))
                        snprintf(time_str, sizeof(time_str), "<error>");
                time_str[sizeof(time_str) - 1] = '\0';
 
                fprintf(fh, "Host '%s' (last updated: %s):\n",
-                               host->host_name, time_str);
+                               host->_name, time_str);
 
                attr_iter = sdb_llist_get_iter(host->attributes);
                if (! attr_iter) {
@@ -595,12 +641,12 @@ sdb_store_dump(FILE *fh)
                        assert(attr);
 
                        if (! sdb_strftime(time_str, sizeof(time_str),
-                                               "%F %T %z", attr->attr_last_update))
+                                               "%F %T %z", attr->_last_update))
                                snprintf(time_str, sizeof(time_str), "<error>");
                        time_str[sizeof(time_str) - 1] = '\0';
 
                        fprintf(fh, "\tAttribute '%s' -> '%s' (last updated: %s)\n",
-                                       attr->attr_name, attr->attr_value, time_str);
+                                       attr->_name, attr->attr_value, time_str);
                }
 
                sdb_llist_iter_destroy(attr_iter);
@@ -618,12 +664,12 @@ sdb_store_dump(FILE *fh)
                        assert(svc);
 
                        if (! sdb_strftime(time_str, sizeof(time_str),
-                                               "%F %T %z", svc->svc_last_update))
+                                               "%F %T %z", svc->_last_update))
                                snprintf(time_str, sizeof(time_str), "<error>");
                        time_str[sizeof(time_str) - 1] = '\0';
 
                        fprintf(fh, "\tService '%s' (last updated: %s)\n",
-                                       svc->svc_name, time_str);
+                                       svc->_name, time_str);
                }
 
                sdb_llist_iter_destroy(svc_iter);