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Instrument async handlers

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- instruments async handler for report and for queueing async
requests
- make MustRegister only ever run once to prevent sync issues

Signed-off-by: Alex Ellis (VMware) <alexellis2@gmail.com>
This commit is contained in:
Alex Ellis (VMware)
2019-01-05 10:17:18 +00:00
committed by Alex Ellis
parent 5a1bdcdb91
commit fca32a0e79
5 changed files with 31 additions and 11 deletions
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9
gateway/metrics/exporter_test.go
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@ -40,24 +40,27 @@ func Test_Describe_DescribesThePrometheusMetrics(t *testing.T) {
go exporter.Describe(ch)
d := (<-ch)
d := <-ch
expectedGatewayFunctionInvocationDesc := `Desc{fqName: "gateway_function_invocation_total", help: "Individual function metrics", constLabels: {}, variableLabels: [function_name code]}`
actualGatewayFunctionInvocationDesc := d.String()
if expectedGatewayFunctionInvocationDesc != actualGatewayFunctionInvocationDesc {
t.Errorf("Want %s, got: %s", expectedGatewayFunctionInvocationDesc, actualGatewayFunctionInvocationDesc)
}
d = (<-ch)
d = <-ch
expectedGatewayFunctionsHistogramDesc := `Desc{fqName: "gateway_functions_seconds", help: "Function time taken", constLabels: {}, variableLabels: [function_name]}`
actualGatewayFunctionsHistogramDesc := d.String()
if expectedGatewayFunctionsHistogramDesc != actualGatewayFunctionsHistogramDesc {
t.Errorf("Want %s, got: %s", expectedGatewayFunctionsHistogramDesc, actualGatewayFunctionsHistogramDesc)
}
d = (<-ch)
d = <-ch
expectedServiceReplicasGaugeDesc := `Desc{fqName: "gateway_service_count", help: "Docker service replicas", constLabels: {}, variableLabels: [function_name]}`
actualServiceReplicasGaugeDesc := d.String()
if expectedServiceReplicasGaugeDesc != actualServiceReplicasGaugeDesc {
t.Errorf("Want %s, got: %s", expectedServiceReplicasGaugeDesc, actualServiceReplicasGaugeDesc)
}
}
func Test_Collect_CollectsTheNumberOfReplicasOfAService(t *testing.T) {