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diff --git a/src/core/store.c b/src/core/store.c
index 2565eca4c27feadab488efecec8e2921c7bfd434..a977954c473b171c6b09bc0bb0f815f8ccdca184 100644 (file)
--- a/src/core/store.c
+++ b/src/core/store.c
char interval_str[64];
size_t i;
+ /* TODO: make time and interval formats configurable */
if (! sdb_strftime(time_str, sizeof(time_str),
"%F %T %z", obj->last_update))
snprintf(time_str, sizeof(time_str), "<error>");
sdb_strbuf_append(buf, "]");
} /* store_obj_tojson */
+/*
+ * ts_tojson serializes a time-series to JSON.
+ *
+ * The function never returns an error. Rather, an error message will be part
+ * of the serialized data.
+ */
+static void
+ts_tojson(sdb_timeseries_t *ts, sdb_strbuf_t *buf)
+{
+ char start_str[64];
+ char end_str[64];
+
+ size_t i;
+
+ /* TODO: make time format configurable */
+ if (! sdb_strftime(start_str, sizeof(start_str),
+ "%F %T %z", ts->start))
+ snprintf(start_str, sizeof(start_str), "<error>");
+ start_str[sizeof(start_str) - 1] = '\0';
+ if (! sdb_strftime(end_str, sizeof(end_str),
+ "%F %T %z", ts->end))
+ snprintf(end_str, sizeof(end_str), "<error>");
+ end_str[sizeof(end_str) - 1] = '\0';
+
+ sdb_strbuf_append(buf, "{\"start\": \"%s\", \"end\": \"%s\", \"data\": {",
+ start_str, end_str);
+
+ for (i = 0; i < ts->data_names_len; ++i) {
+ size_t j;
+ sdb_strbuf_append(buf, "\"%s\": [", ts->data_names[i]);
+
+ for (j = 0; j < ts->data_len; ++j) {
+ char time_str[64];
+
+ if (! sdb_strftime(time_str, sizeof(time_str),
+ "%F %T %z", ts->data[i][j].timestamp))
+ snprintf(time_str, sizeof(time_str), "<error>");
+ time_str[sizeof(time_str) - 1] = '\0';
+
+ sdb_strbuf_append(buf, "{\"timestamp\": \"%s\", "
+ "\"value\": \"%f\"}", time_str, ts->data[i][j].value);
+
+ if (j < ts->data_len - 1)
+ sdb_strbuf_append(buf, ",");
+ }
+
+ if (i < ts->data_names_len - 1)
+ sdb_strbuf_append(buf, "],");
+ else
+ sdb_strbuf_append(buf, "]");
+ }
+ sdb_strbuf_append(buf, "}}");
+} /* ts_tojson */
+
/*
* public API
*/
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",
+ "for metric '%s' - host '%s' not found",
key, metric, hostname);
pthread_rwlock_unlock(&host_lock);
return -1;
return status;
} /* sdb_store_metric_attr */
+int
+sdb_store_fetch_timeseries(const char *hostname, const char *metric,
+ sdb_timeseries_opts_t *opts, sdb_strbuf_t *buf)
+{
+ sdb_avltree_t *metrics;
+ sdb_metric_t *m;
+
+ sdb_timeseries_t *ts;
+
+ if ((! hostname) || (! metric) || (! opts) || (! buf))
+ return -1;
+
+ pthread_rwlock_rdlock(&host_lock);
+ metrics = get_host_children(hostname, SDB_METRIC);
+ if (! metrics) {
+ sdb_log(SDB_LOG_ERR, "store: Failed to fetch time-series '%s/%s' "
+ "- host '%s' not found", hostname, 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 fetch time-series '%s/%s' "
+ "- metric '%s' not found", hostname, metric, metric);
+ pthread_rwlock_unlock(&host_lock);
+ return -1;
+ }
+
+ if ((! m->store.type) || (! m->store.id)) {
+ sdb_log(SDB_LOG_ERR, "store: Failed to fetch time-series '%s/%s' "
+ "- no data-store configured for the stored metric",
+ hostname, metric);
+ pthread_rwlock_unlock(&host_lock);
+ return -1;
+ }
+
+ {
+ char type[strlen(m->store.type) + 1];
+ char id[strlen(m->store.id) + 1];
+
+ strncpy(type, m->store.type, sizeof(type));
+ strncpy(id, m->store.id, sizeof(id));
+ pthread_rwlock_unlock(&host_lock);
+
+ ts = sdb_plugin_fetch_timeseries(type, id, opts);
+ if (! ts) {
+ sdb_log(SDB_LOG_ERR, "store: Failed to fetch time-series '%s/%s' "
+ "- %s fetcher callback returned no data for '%s'",
+ hostname, metric, type, id);
+ return -1;
+ }
+ }
+
+ ts_tojson(ts, buf);
+ sdb_timeseries_destroy(ts);
+ return 0;
+} /* sdb_store_fetch_timeseries */
+
int
sdb_store_get_field(sdb_store_obj_t *obj, int field, sdb_data_t *res)
{
- if ((! obj) || (! res))
+ sdb_data_t tmp;
+
+ if (! obj)
return -1;
switch (field) {
+ case SDB_FIELD_NAME:
+ tmp.type = SDB_TYPE_STRING;
+ tmp.data.string = strdup(SDB_OBJ(obj)->name);
+ if (! tmp.data.string)
+ return -1;
+ break;
case SDB_FIELD_LAST_UPDATE:
- res->type = SDB_TYPE_DATETIME;
- res->data.datetime = obj->last_update;
+ tmp.type = SDB_TYPE_DATETIME;
+ tmp.data.datetime = obj->last_update;
break;
case SDB_FIELD_AGE:
- res->type = SDB_TYPE_DATETIME;
- res->data.datetime = sdb_gettime() - obj->last_update;
+ tmp.type = SDB_TYPE_DATETIME;
+ tmp.data.datetime = sdb_gettime() - obj->last_update;
break;
case SDB_FIELD_INTERVAL:
- res->type = SDB_TYPE_DATETIME;
- res->data.datetime = obj->interval;
+ tmp.type = SDB_TYPE_DATETIME;
+ tmp.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 */
+ {
+ tmp.type = SDB_TYPE_ARRAY | SDB_TYPE_STRING;
+ tmp.data.array.length = obj->backends_num;
+ tmp.data.array.values = obj->backends;
+ return sdb_data_copy(res, &tmp);
+ break;
+ }
default:
return -1;
}
+ if (res)
+ *res = tmp;
+ else
+ sdb_data_free_datum(&tmp);
return 0;
} /* sdb_store_get_field */
+int
+sdb_store_get_attr(sdb_store_obj_t *obj, const char *name, sdb_data_t *res,
+ sdb_store_matcher_t *filter)
+{
+ sdb_avltree_t *tree = NULL;
+ sdb_store_obj_t *attr;
+
+ if ((! obj) || (! name))
+ return -1;
+
+ if (obj->type == SDB_HOST)
+ tree = HOST(obj)->attributes;
+ else if (obj->type == SDB_SERVICE)
+ tree = SVC(obj)->attributes;
+ else if (obj->type == SDB_METRIC)
+ tree = METRIC(obj)->attributes;
+
+ if (! tree)
+ return -1;
+
+ attr = STORE_OBJ(sdb_avltree_lookup(tree, name));
+ if (! attr)
+ return -1;
+ if (filter && (! sdb_store_matcher_matches(filter, attr, NULL))) {
+ sdb_object_deref(SDB_OBJ(attr));
+ return -1;
+ }
+
+ assert(STORE_OBJ(attr)->type == SDB_ATTRIBUTE);
+ if (res)
+ sdb_data_copy(res, &ATTR(attr)->value);
+ sdb_object_deref(SDB_OBJ(attr));
+ return 0;
+} /* sdb_store_get_attr */
+
int
sdb_store_host_tojson(sdb_store_obj_t *h, sdb_strbuf_t *buf,
sdb_store_matcher_t *filter, int flags)
if ((! h) || (h->type != SDB_HOST) || (! buf))
return -1;
+ /* This function ignores SKIP_EMPTY flags given that the current
+ * implementation sucks and it's nut currently used when calling this
+ * function directly. */
+
sdb_strbuf_append(buf, "{\"name\": \"%s\", ", SDB_OBJ(host)->name);
store_common_tojson(h, buf);
return 0;
} /* sdb_store_host_tojson */
+static _Bool
+has_children(sdb_avltree_t *tree, sdb_store_matcher_t *filter)
+{
+ sdb_avltree_iter_t *iter;
+
+ if (! filter)
+ return sdb_avltree_size(tree) > 0;
+
+ iter = sdb_avltree_get_iter(tree);
+ while (sdb_avltree_iter_has_next(iter)) {
+ sdb_store_obj_t *sobj = STORE_OBJ(sdb_avltree_iter_get_next(iter));
+ if (sdb_store_matcher_matches(filter, sobj, NULL)) {
+ sdb_avltree_iter_destroy(iter);
+ return 1;
+ }
+ }
+ sdb_avltree_iter_destroy(iter);
+ return 0;
+} /* has_children */
+
int
sdb_store_tojson(sdb_strbuf_t *buf, sdb_store_matcher_t *filter, int flags)
{
return -1;
}
- sdb_strbuf_append(buf, "{\"hosts\":[");
+ sdb_strbuf_append(buf, "[");
len = sdb_strbuf_len(buf);
while (sdb_avltree_iter_has_next(host_iter)) {
if (filter && (! sdb_store_matcher_matches(filter, host, NULL)))
continue;
+ /*
+ * XXX: This approach sucks but it's the best we can do at the moment.
+ * In the future, all store lookups should be split into multiple
+ * steps instead: first, retrieve all relevant objects and apply all
+ * pre-processing operations and then format it for the wire.
+ */
+ if ((flags & SDB_SKIP_EMPTY_SERVICES)
+ && (! has_children(HOST(host)->services, filter)))
+ continue;
+ if ((flags & SDB_SKIP_EMPTY_METRICS)
+ && (! has_children(HOST(host)->metrics, filter)))
+ continue;
+
if (sdb_strbuf_len(buf) > len)
sdb_strbuf_append(buf, ",");
len = sdb_strbuf_len(buf);
return -1;
}
- sdb_strbuf_append(buf, "]}");
+ sdb_strbuf_append(buf, "]");
sdb_avltree_iter_destroy(host_iter);
pthread_rwlock_unlock(&host_lock);
return 0;
} /* sdb_store_tojson */
-/* TODO: actually support hierarchical data */
int
-sdb_store_iterate(sdb_store_iter_cb cb, void *user_data)
+sdb_store_scan(int type, sdb_store_matcher_t *m, sdb_store_matcher_t *filter,
+ sdb_store_lookup_cb cb, void *user_data)
{
sdb_avltree_iter_t *host_iter;
int status = 0;
+ if (! cb)
+ return -1;
+
+ if ((type != SDB_HOST) && (type != SDB_SERVICE) && (type != SDB_METRIC))
+ return -1;
+
pthread_rwlock_rdlock(&host_lock);
host_iter = sdb_avltree_get_iter(hosts);
/* has_next returns false if the iterator is NULL */
while (sdb_avltree_iter_has_next(host_iter)) {
sdb_store_obj_t *host;
+ sdb_avltree_iter_t *iter = NULL;
host = STORE_OBJ(sdb_avltree_iter_get_next(host_iter));
assert(host);
- if (cb(host, user_data)) {
- status = -1;
- break;
+ if (! sdb_store_matcher_matches(filter, host, NULL))
+ continue;
+
+ if (type == SDB_SERVICE)
+ iter = sdb_avltree_get_iter(HOST(host)->services);
+ else if (type == SDB_METRIC)
+ iter = sdb_avltree_get_iter(HOST(host)->metrics);
+
+ if (iter) {
+ while (sdb_avltree_iter_has_next(iter)) {
+ sdb_store_obj_t *obj;
+ obj = STORE_OBJ(sdb_avltree_iter_get_next(iter));
+ assert(obj);
+
+ if (sdb_store_matcher_matches(m, obj, filter)) {
+ if (cb(obj, user_data)) {
+ status = -1;
+ break;
+ }
+ }
+ }
}
+ else if (sdb_store_matcher_matches(m, host, filter)) {
+ if (cb(host, user_data))
+ status = -1;
+ }
+
+ sdb_avltree_iter_destroy(iter);
+ if (status)
+ break;
}
sdb_avltree_iter_destroy(host_iter);
pthread_rwlock_unlock(&host_lock);
return status;
-} /* sdb_store_iterate */
+} /* sdb_store_scan */
/* vim: set tw=78 sw=4 ts=4 noexpandtab : */