agi fix critical bug

CHANGELOG/7.6.1.md

@@ -9,4 +9,5 @@ _Release Date: Month Day, Year_
 * Improvement: AGI: Update `simpod-json-datasource` version to `0.6.5`.
 * FIX: AGI Monitor preserve owner when sizing instances.
 * FIX: Rest API: crashes.
-* FIX: Update java in `vscode` client.
+* FIX: Update java in `vscode` client.
+* FIX: AGI: Plugin: Fix critical bug resulting in a panic and a mutex lock.

src/plugin/queryStatic.go

@@ -46,5 +46,5 @@ func (p *Plugin) handleQueryStatic(req *queryRequest, i int, remote string) (*st
 		responseRows = append(responseRows, dataValue)
 	}
 	response.Rows = append(response.Rows, responseRows)
-	return nil, nil
+	return response, nil
 }

src/plugin/queryTimeseries.go

@@ -87,6 +87,10 @@ func (p *Plugin) handleQueryTimeseries(req *queryRequest, i int, remote string,
 		vals = nil
 		p.cache.lock.RLock()
 		for _, v := range req.selectedVars[filter.Name] {
+			if n, ok := p.cache.metadata[filter.Name]; !ok || n == nil {
+				logger.Detail("Grafana requsted a filter which results in nil dereference, skipping (ok:%t filter.Name:%s v:%s)", ok, filter.Name, v)
+				continue
+			}
 			idxval := inslice.StringMatch(p.cache.metadata[filter.Name].Entries, v)
 			if idxval == -1 {
 				continue