Code

store: Store "data-store" information alongside metrics.
[sysdb.git] / src / core / store.c
index bb6cb96a45bb4b91d934705324e06b179b4742b4..2565eca4c27feadab488efecec8e2921c7bfd434 100644 (file)
@@ -58,6 +58,7 @@ static pthread_rwlock_t host_lock = PTHREAD_RWLOCK_INITIALIZER;
 
 static sdb_type_t sdb_host_type;
 static sdb_type_t sdb_service_type;
+static sdb_type_t sdb_metric_type;
 static sdb_type_t sdb_attribute_type;
 
 static int
@@ -105,6 +106,9 @@ sdb_host_init(sdb_object_t *obj, va_list ap)
        sobj->services = sdb_avltree_create();
        if (! sobj->services)
                return -1;
+       sobj->metrics = sdb_avltree_create();
+       if (! sobj->metrics)
+               return -1;
        sobj->attributes = sdb_avltree_create();
        if (! sobj->attributes)
                return -1;
@@ -121,6 +125,8 @@ sdb_host_destroy(sdb_object_t *obj)
 
        if (sobj->services)
                sdb_avltree_destroy(sobj->services);
+       if (sobj->metrics)
+               sdb_avltree_destroy(sobj->metrics);
        if (sobj->attributes)
                sdb_avltree_destroy(sobj->attributes);
 } /* sdb_host_destroy */
@@ -154,6 +160,42 @@ sdb_service_destroy(sdb_object_t *obj)
                sdb_avltree_destroy(sobj->attributes);
 } /* sdb_service_destroy */
 
+static int
+sdb_metric_init(sdb_object_t *obj, va_list ap)
+{
+       sdb_metric_t *sobj = METRIC(obj);
+       int ret;
+
+       /* this will consume the first argument (type) of ap */
+       ret = store_obj_init(obj, ap);
+       if (ret)
+               return ret;
+
+       sobj->attributes = sdb_avltree_create();
+       if (! sobj->attributes)
+               return -1;
+
+       sobj->store.type = sobj->store.id = NULL;
+       return 0;
+} /* sdb_metric_init */
+
+static void
+sdb_metric_destroy(sdb_object_t *obj)
+{
+       sdb_metric_t *sobj = METRIC(obj);
+       assert(obj);
+
+       store_obj_destroy(obj);
+
+       if (sobj->attributes)
+               sdb_avltree_destroy(sobj->attributes);
+
+       if (sobj->store.type)
+               free(sobj->store.type);
+       if (sobj->store.id)
+               free(sobj->store.id);
+} /* sdb_metric_destroy */
+
 static int
 sdb_attr_init(sdb_object_t *obj, va_list ap)
 {
@@ -194,6 +236,12 @@ static sdb_type_t sdb_service_type = {
        sdb_service_destroy
 };
 
+static sdb_type_t sdb_metric_type = {
+       sizeof(sdb_metric_t),
+       sdb_metric_init,
+       sdb_metric_destroy
+};
+
 static sdb_type_t sdb_attribute_type = {
        sizeof(sdb_attribute_t),
        sdb_attr_init,
@@ -255,7 +303,7 @@ store_obj(sdb_avltree_t *parent_tree, int type, const char *name,
        if (old) {
                if (old->last_update > last_update) {
                        sdb_log(SDB_LOG_DEBUG, "store: Cannot update %s '%s' - "
-                                       "value too old (%"PRIscTIME" < %"PRIscTIME")",
+                                       "value too old (%"PRIsdbTIME" < %"PRIsdbTIME")",
                                        SDB_STORE_TYPE_TO_NAME(type), name,
                                        last_update, old->last_update);
                        /* don't report an error; the object may be updated by multiple
@@ -290,7 +338,11 @@ store_obj(sdb_avltree_t *parent_tree, int type, const char *name,
                }
                else {
                        sdb_type_t t;
-                       t = type == SDB_HOST ? sdb_host_type : sdb_service_type;
+                       t = type == SDB_HOST
+                               ? sdb_host_type
+                               : type == SDB_SERVICE
+                                       ? sdb_service_type
+                                       : sdb_metric_type;
                        new = STORE_OBJ(sdb_object_create(name, t, type, last_update));
                }
 
@@ -350,7 +402,8 @@ get_host_children(const char *hostname, int type)
        sdb_host_t *host;
 
        assert(hostname);
-       assert((type == SDB_SERVICE) || (type == SDB_ATTRIBUTE));
+       assert((type == SDB_SERVICE) || (type == SDB_METRIC)
+                       || (type == SDB_ATTRIBUTE));
 
        if (! hosts)
                return NULL;
@@ -369,6 +422,8 @@ get_host_children(const char *hostname, int type)
        sdb_object_deref(SDB_OBJ(host));
        if (type == SDB_ATTRIBUTE)
                return host->attributes;
+       else if (type == SDB_METRIC)
+               return host->metrics;
        else
                return host->services;
 } /* get_host_children */
@@ -409,7 +464,7 @@ store_common_tojson(sdb_store_obj_t *obj, sdb_strbuf_t *buf)
 } /* store_common_tojson */
 
 /*
- * store_obj_tojson serializes attribute / service objects to JSON.
+ * store_obj_tojson serializes attribute / metric / service objects to JSON.
  *
  * The function never returns an error. Rather, an error message will be part
  * of the serialized data.
@@ -420,7 +475,9 @@ store_obj_tojson(sdb_avltree_t *tree, int type, sdb_strbuf_t *buf,
 {
        sdb_avltree_iter_t *iter;
 
-       assert((type == SDB_ATTRIBUTE) || (type == SDB_SERVICE));
+       assert((type == SDB_ATTRIBUTE)
+                       || (type == SDB_METRIC)
+                       || (type == SDB_SERVICE));
 
        sdb_strbuf_append(buf, "[");
        iter = sdb_avltree_get_iter(tree);
@@ -457,6 +514,12 @@ store_obj_tojson(sdb_avltree_t *tree, int type, sdb_strbuf_t *buf,
                        store_obj_tojson(SVC(sobj)->attributes, SDB_ATTRIBUTE,
                                        buf, filter, flags);
                }
+               else if ((sobj->type == SDB_METRIC)
+                               && (! (flags & SDB_SKIP_ATTRIBUTES))) {
+                       sdb_strbuf_append(buf, ", \"attributes\": ");
+                       store_obj_tojson(METRIC(sobj)->attributes, SDB_ATTRIBUTE,
+                                       buf, filter, flags);
+               }
                sdb_strbuf_append(buf, "}");
 
                if (sdb_avltree_iter_has_next(iter))
@@ -620,6 +683,128 @@ sdb_store_service_attr(const char *hostname, const char *service,
        return status;
 } /* sdb_store_service_attr */
 
+int
+sdb_store_metric(const char *hostname, const char *name,
+               sdb_metric_store_t *store, sdb_time_t last_update)
+{
+       sdb_store_obj_t *obj = NULL;
+       sdb_metric_t *metric;
+
+       sdb_avltree_t *metrics;
+
+       int status = 0;
+
+       if ((! hostname) || (! name))
+               return -1;
+       if (store && ((! store->type) || (! store->id)))
+               return -1;
+
+       pthread_rwlock_wrlock(&host_lock);
+       metrics = get_host_children(hostname, SDB_METRIC);
+       if (! metrics) {
+               sdb_log(SDB_LOG_ERR, "store: Failed to store metric '%s' - "
+                               "host '%s' not found", name, hostname);
+               status = -1;
+       }
+
+       if (! status)
+               status = store_obj(metrics, SDB_METRIC, name, last_update, &obj);
+
+       if (status || (! store)) {
+               pthread_rwlock_unlock(&host_lock);
+               return status;
+       }
+
+       assert(obj);
+       metric = METRIC(obj);
+
+       if ((! metric->store.type) || strcasecmp(metric->store.type, store->type)) {
+               if (metric->store.type)
+                       free(metric->store.type);
+               metric->store.type = strdup(store->type);
+       }
+       if ((! metric->store.id) || strcasecmp(metric->store.id, store->id)) {
+               if (metric->store.id)
+                       free(metric->store.id);
+               metric->store.id = strdup(store->id);
+       }
+
+       if ((! metric->store.type) || (! metric->store.id)) {
+               if (metric->store.type)
+                       free(metric->store.type);
+               if (metric->store.id)
+                       free(metric->store.id);
+               metric->store.type = metric->store.id = NULL;
+               status = -1;
+       }
+       pthread_rwlock_unlock(&host_lock);
+       return status;
+} /* sdb_store_metric */
+
+int
+sdb_store_metric_attr(const char *hostname, const char *metric,
+               const char *key, const sdb_data_t *value, sdb_time_t last_update)
+{
+       sdb_avltree_t *metrics;
+       sdb_metric_t *m;
+       int status = 0;
+
+       if ((! hostname) || (! metric) || (! key))
+               return -1;
+
+       pthread_rwlock_wrlock(&host_lock);
+       metrics = get_host_children(hostname, SDB_METRIC);
+       if (! metrics) {
+               sdb_log(SDB_LOG_ERR, "store: Failed to store attribute '%s' "
+                               "for metric '%s' - host '%ss' not found",
+                               key, metric, hostname);
+               pthread_rwlock_unlock(&host_lock);
+               return -1;
+       }
+
+       m = METRIC(sdb_avltree_lookup(metrics, metric));
+       if (! m) {
+               sdb_log(SDB_LOG_ERR, "store: Failed to store attribute '%s' - "
+                               "metric '%s/%s' not found", key, hostname, metric);
+               status = -1;
+       }
+
+       if (! status)
+               status = store_attr(m->attributes, key, value, last_update);
+
+       sdb_object_deref(SDB_OBJ(m));
+       pthread_rwlock_unlock(&host_lock);
+       return status;
+} /* sdb_store_metric_attr */
+
+int
+sdb_store_get_field(sdb_store_obj_t *obj, int field, sdb_data_t *res)
+{
+       if ((! obj) || (! res))
+               return -1;
+
+       switch (field) {
+               case SDB_FIELD_LAST_UPDATE:
+                       res->type = SDB_TYPE_DATETIME;
+                       res->data.datetime = obj->last_update;
+                       break;
+               case SDB_FIELD_AGE:
+                       res->type = SDB_TYPE_DATETIME;
+                       res->data.datetime = sdb_gettime() - obj->last_update;
+                       break;
+               case SDB_FIELD_INTERVAL:
+                       res->type = SDB_TYPE_DATETIME;
+                       res->data.datetime = obj->interval;
+                       break;
+               case SDB_FIELD_BACKEND:
+                       /* TODO: add support for storing array values in a data object
+                        * for now, fall thru to the error case */
+               default:
+                       return -1;
+       }
+       return 0;
+} /* sdb_store_get_field */
+
 int
 sdb_store_host_tojson(sdb_store_obj_t *h, sdb_strbuf_t *buf,
                sdb_store_matcher_t *filter, int flags)
@@ -629,9 +814,6 @@ sdb_store_host_tojson(sdb_store_obj_t *h, sdb_strbuf_t *buf,
        if ((! h) || (h->type != SDB_HOST) || (! buf))
                return -1;
 
-       if (filter && (! sdb_store_matcher_matches(filter, h, NULL)))
-               return 0;
-
        sdb_strbuf_append(buf, "{\"name\": \"%s\", ", SDB_OBJ(host)->name);
        store_common_tojson(h, buf);
 
@@ -640,6 +822,11 @@ sdb_store_host_tojson(sdb_store_obj_t *h, sdb_strbuf_t *buf,
                store_obj_tojson(host->attributes, SDB_ATTRIBUTE, buf, filter, flags);
        }
 
+       if (! (flags & SDB_SKIP_METRICS)) {
+               sdb_strbuf_append(buf, ", \"metrics\": ");
+               store_obj_tojson(host->metrics, SDB_METRIC, buf, filter, flags);
+       }
+
        if (! (flags & SDB_SKIP_SERVICES)) {
                sdb_strbuf_append(buf, ", \"services\": ");
                store_obj_tojson(host->services, SDB_SERVICE, buf, filter, flags);
@@ -653,6 +840,7 @@ int
 sdb_store_tojson(sdb_strbuf_t *buf, sdb_store_matcher_t *filter, int flags)
 {
        sdb_avltree_iter_t *host_iter;
+       size_t len;
 
        if (! buf)
                return -1;
@@ -667,20 +855,22 @@ sdb_store_tojson(sdb_strbuf_t *buf, sdb_store_matcher_t *filter, int flags)
 
        sdb_strbuf_append(buf, "{\"hosts\":[");
 
+       len = sdb_strbuf_len(buf);
        while (sdb_avltree_iter_has_next(host_iter)) {
                sdb_store_obj_t *host;
-               size_t len = sdb_strbuf_len(buf);
 
                host = STORE_OBJ(sdb_avltree_iter_get_next(host_iter));
                assert(host);
 
-               if (sdb_store_host_tojson(host, buf, filter, flags))
-                       return -1;
+               if (filter && (! sdb_store_matcher_matches(filter, host, NULL)))
+                       continue;
 
-               /* sdb_store_host_tojson may leave the buffer unmodified */
-               if ((sdb_avltree_iter_has_next(host_iter))
-                               && (sdb_strbuf_len(buf) != len))
+               if (sdb_strbuf_len(buf) > len)
                        sdb_strbuf_append(buf, ",");
+               len = sdb_strbuf_len(buf);
+
+               if (sdb_store_host_tojson(host, buf, filter, flags))
+                       return -1;
        }
 
        sdb_strbuf_append(buf, "]}");