plugin: Add a helper function to query timeseries information.

[sysdb.git] / src / core / plugin.c

diff --git a/src/core/plugin.c b/src/core/plugin.c
index 3fb0a77348bb098b414f9724fb9281598ae41463..ca04ae21efc8745efc62553cda354060ca54390d 100644 (file)
--- a/src/core/plugin.c
+++ b/src/core/plugin.c
@@ -1555,6 +1555,31 @@ sdb_plugin_fetch_timeseries(const char *type, const char *id,
        return ts;
 } /* sdb_plugin_fetch_timeseries */
 
+sdb_timeseries_info_t *
+sdb_plugin_describe_timeseries(const char *type, const char *id)
+{
+       ts_fetcher_t *fetcher;
+       sdb_timeseries_info_t *ts_info;
+
+       ctx_t *old_ctx;
+
+       if ((! type) || (! id))
+               return NULL;
+
+       fetcher = TS_FETCHER(sdb_llist_search_by_name(timeseries_fetcher_list, type));
+       if (! fetcher) {
+               sdb_log(SDB_LOG_ERR, "core: Cannot describe time-series of type %s: "
+                               "no such plugin loaded", type);
+               errno = ENOENT;
+               return NULL;
+       }
+
+       old_ctx = ctx_set(fetcher->ts_ctx);
+       ts_info = fetcher->impl.describe(id, fetcher->ts_user_data);
+       ctx_set(old_ctx);
+       return ts_info;
+} /* sdb_plugin_describe_timeseries */
+
 int
 sdb_plugin_query(sdb_ast_node_t *ast,
                sdb_store_writer_t *w, sdb_object_t *wd, sdb_strbuf_t *errbuf)