sfxexporter: Update disk.summary_utilization translation rule to acco…

…modate new labels (#1258)

Update translation rules to mean over "mode" and "mountpoint"  which are recently added
labels to the filesystems scraper in hostmetrics receiver. This will ensure utilization
is not double counted across mountpoints of a single device. Also, add "type"
(also a newly added label) to existing translation rules to sum across fs types as well
apart from device name.

exporter/signalfxexporter/factory_test.go

@@ -180,7 +180,7 @@ func TestCreateMetricsExporterWithDefaultTranslaitonRules(t *testing.T) {
 
  // Validate that default translation rules are loaded
  // Expected values has to be updated once default config changed
- assert.Equal(t, 49, len(config.TranslationRules))
+ assert.Equal(t, 51, len(config.TranslationRules))
  assert.Equal(t, translation.ActionRenameDimensionKeys, config.TranslationRules[0].Action)
  assert.Equal(t, 33, len(config.TranslationRules[0].Mapping))
 }

exporter/signalfxexporter/translation/constants.go

@@ -376,12 +376,19 @@ translation_rules:
 - action: copy_metrics
  mapping:
  system.filesystem.usage: disk.summary_total
+- action: aggregate_metric
+ metric_name: disk.summary_total
+ aggregation_method: avg
+ without_dimensions:
+ - mode
+ - mountpoint
 - action: aggregate_metric
  metric_name: disk.summary_total
  aggregation_method: sum
  without_dimensions:
  - state
  - device
+ - type
 
 # convert filesystem metrics
 - action: split_metric
@@ -401,12 +408,19 @@ translation_rules:
 # df_complex.used_total
 - action: copy_metrics
  mapping:
- df_complex.used: df_complex.used_total 
+ df_complex.used: df_complex.used_total
+- action: aggregate_metric
+ metric_name: df_complex.used_total
+ aggregation_method: avg
+ without_dimensions:
+ - mode
+ - mountpoint
 - action: aggregate_metric
  metric_name: df_complex.used_total
  aggregation_method: sum
  without_dimensions:
  - device
+ - type
 
 # disk utilization
 - action: calculate_new_metric