Provide runtime ml info from a new endpoint. (#11886)

* Provide runtime ml info from a new endpoint.

* Add hosts & charts to skip from ML in the /info endpoint.

This information belongs in /info, and not in /ml-info, because the
value of these variables can not change at the agent's runtime.

* Use strdupz instead of strdup.

1 files changed, 26 insertions, 4 deletions

diff --git a/web/api/web_api_v1.c b/web/api/web_api_v1.c
index d335dd687d..ff5af93b32 100644
--- a/web/api/web_api_v1.c
+++ b/web/api/web_api_v1.c
@@ -1130,11 +1130,11 @@ int web_client_api_request_v1_anomaly_events(RRDHOST *host, struct web_client *w
 
     char *s;
     if (!before || !after)
-        s = strdup("{\"error\": \"missing after/before parameters\" }\n");
+        s = strdupz("{\"error\": \"missing after/before parameters\" }\n");
     else {
         s = ml_get_anomaly_events(host, "AD1", 1, after, before);
         if (!s)
-            s = strdup("{\"error\": \"json string is empty\" }\n");
+            s = strdupz("{\"error\": \"json string is empty\" }\n");
     }
 
     BUFFER *wb = w->response.data;
@@ -1174,11 +1174,11 @@ int web_client_api_request_v1_anomaly_event_info(RRDHOST *host, struct web_clien
 
     char *s;
     if (!before || !after)
-        s = strdup("{\"error\": \"missing after/before parameters\" }\n");
+        s = strdupz("{\"error\": \"missing after/before parameters\" }\n");
     else {
         s = ml_get_anomaly_event_info(host, "AD1", 1, after, before);
         if (!s)
-            s = strdup("{\"error\": \"json string is empty\" }\n");
+            s = strdupz("{\"error\": \"json string is empty\" }\n");
     }
 
     BUFFER *wb = w->response.data;
@@ -1190,6 +1190,27 @@ int web_client_api_request_v1_anomaly_event_info(RRDHOST *host, struct web_clien
     freez(s);
     return HTTP_RESP_OK;
 }
+
+int web_client_api_request_v1_ml_info(RRDHOST *host, struct web_client *w, char *url) {
+    (void) url;
+
+    if (!netdata_ready)
+        return HTTP_RESP_BACKEND_FETCH_FAILED;
+
+    char *s = ml_get_host_runtime_info(host);
+    if (!s)
+        s = strdupz("{\"error\": \"json string is empty\" }\n");
+
+    BUFFER *wb = w->response.data;
+    buffer_flush(wb);
+    wb->contenttype = CT_APPLICATION_JSON;
+    buffer_strcat(wb, s);
+    buffer_no_cacheable(wb);
+
+    freez(s);
+    return HTTP_RESP_OK;
+}
+
 #endif // defined(ENABLE_ML)
 
 inline int web_client_api_request_v1_info(RRDHOST *host, struct web_client *w, char *url) {
@@ -1250,6 +1271,7 @@ static struct api_command {
 #if defined(ENABLE_ML)
         { "anomaly_events",     0, WEB_CLIENT_ACL_DASHBOARD, web_client_api_request_v1_anomaly_events     },
         { "anomaly_event_info", 0, WEB_CLIENT_ACL_DASHBOARD, web_client_api_request_v1_anomaly_event_info },
+        { "ml_info",            0, WEB_CLIENT_ACL_DASHBOARD, web_client_api_request_v1_ml_info            },
 #endif
 
         { "manage/health",   0, WEB_CLIENT_ACL_MGMT,      web_client_api_request_v1_mgmt_health     },