[EEM] Undefined failedTransactionRate metric from service entity definition

[kpatticha]

Issue

kibana/x-pack/plugins/observability_solution/entity_manager/server/lib/entities/built_in/services.ts

Lines 85 to 98 in 8c5b085

	name: 'failedTransactionRate',
	equation: 'A / B',
	metrics: [
	{
	name: 'A',
	aggregation: 'doc_count',
	filter: serviceTransactionFilter(['event.outcome: "failure"']),
	},
	{
	name: 'B',
	aggregation: 'doc_count',
	filter: serviceTransactionFilter(['event.outcome: *']),
	},
	],

The service entity definition is using event.outcome for calculating failedTransactionRate which doesn't exist in the service transaction metric.

The event.success_count should be used instead.

https://github.com/elastic/apm-server/blob/main/docs/data/elasticsearch/service_transaction_metric.json#L18-L21

related

• Store outcome values in servicemetrics transaction.success_count apm-server#9791
• service metrics: add numeric outcome  apm-server#5243

[elasticmachine]

Pinging @elastic/obs-knowledge-team (Team:obs-knowledge)

[klacabane]

ok, the new metric should be

      {
        name: 'failedTransactionRate',
        equation: '1 - (A / B)',
        metrics: [
          {
            name: 'A',
            aggregation: 'sum',
            filter: serviceTransactionFilter(),
            field: 'event.success_count',
          },
          {
            name: 'B',
            aggregation: 'value_count',
            filter: serviceTransactionFilter(),
            field: 'event.success_count',
          },
        ],
      },