[chore][receiver/mysql]: extract handling global stats to another fun…

…ction (#14458)

Global stats have been extracted to another function to handle the errors properly.

receiver/mysqlreceiver/scraper.go

@@ -99,10 +99,19 @@ func (m *mySQLScraper) scrape(context.Context) (pmetric.Metrics, error) {
  m.scrapeIndexIoWaitsStats(now, errs)
 
  // collect global status metrics.
+ m.scrapeGlobalStats(now, errs)
+
+ m.mb.EmitForResource(metadata.WithMysqlInstanceEndpoint(m.config.Endpoint))
+
+ return m.mb.Emit(), errs.Combine()
+}
+
+func (m *mySQLScraper) scrapeGlobalStats(now pcommon.Timestamp, errs *scrapererror.ScrapeErrors) {
  globalStats, err := m.sqlclient.getGlobalStats()
  if err != nil {
  m.logger.Error("Failed to fetch global stats", zap.Error(err))
- return pmetric.Metrics{}, err
+ errs.AddPartial(66, err)
+ return
  }
 
  m.recordDataPages(now, globalStats, errs)
@@ -278,10 +287,6 @@ func (m *mySQLScraper) scrape(context.Context) (pmetric.Metrics, error) {
  addPartialIfError(errs, m.mb.RecordMysqlThreadsDataPoint(now, v, metadata.AttributeThreadsRunning))
  }
  }
-
- m.mb.EmitForResource(metadata.WithMysqlInstanceEndpoint(m.config.Endpoint))
-
- return m.mb.Emit(), errs.Combine()
 }
 
 func (m *mySQLScraper) scrapeTableIoWaitsStats(now pcommon.Timestamp, errs *scrapererror.ScrapeErrors) {