Add .Net Performance counters

collector/netframework_clrexceptions.go

@@ -0,0 +1,118 @@
+// returns data points from Win32_PerfRawData_NETFramework_NETCLRExceptions
+// <add link to documentation here> - Win32_PerfRawData_NETFramework_NETCLRExceptions class
+package collector
+
+import (
+	"log"
+
+	"github.com/StackExchange/wmi"
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+func init() {
+	Factories["netframework_clrexceptions"] = NewNETFramework_NETCLRExceptionsCollector
+}
+
+// A NETFramework_NETCLRExceptionsCollector is a Prometheus collector for WMI Win32_PerfRawData_NETFramework_NETCLRExceptions metrics
+type NETFramework_NETCLRExceptionsCollector struct {
+	NumberofExcepsThrown *prometheus.Desc
+	NumberofFilters      *prometheus.Desc
+	NumberofFinallys     *prometheus.Desc
+	ThrowToCatchDepth    *prometheus.Desc
+}
+
+// NewNETFramework_NETCLRExceptionsCollector ...
+func NewNETFramework_NETCLRExceptionsCollector() (Collector, error) {
+	const subsystem = "netframework_clrexceptions"
+	return &NETFramework_NETCLRExceptionsCollector{
+		NumberofExcepsThrown: prometheus.NewDesc(
+			prometheus.BuildFQName(Namespace, subsystem, "exceptions_thrown_total"),
+			"Displays the total number of exceptions thrown since the application started. This includes both .NET exceptions and unmanaged exceptions that are converted into .NET exceptions.",
+			[]string{"process"},
+			nil,
+		),
+		NumberofFilters: prometheus.NewDesc(
+			prometheus.BuildFQName(Namespace, subsystem, "exceptions_filters_total"),
+			"Displays the total number of .NET exception filters executed. An exception filter evaluates regardless of whether an exception is handled.",
+			[]string{"process"},
+			nil,
+		),
+		NumberofFinallys: prometheus.NewDesc(
+			prometheus.BuildFQName(Namespace, subsystem, "exceptions_finallys_total"),
+			"Displays the total number of finally blocks executed. Only the finally blocks executed for an exception are counted; finally blocks on normal code paths are not counted by this counter.",
+			[]string{"process"},
+			nil,
+		),
+		ThrowToCatchDepth: prometheus.NewDesc(
+			prometheus.BuildFQName(Namespace, subsystem, "throw_to_catch_depth_total"),
+			"Displays the total number of stack frames traversed, from the frame that threw the exception to the frame that handled the exception.",
+			[]string{"process"},
+			nil,
+		),
+	}, nil
+}
+
+// Collect sends the metric values for each metric
+// to the provided prometheus Metric channel.
+func (c *NETFramework_NETCLRExceptionsCollector) Collect(ch chan<- prometheus.Metric) error {
+	if desc, err := c.collect(ch); err != nil {
+		log.Println("[ERROR] failed collecting win32_perfrawdata_netframework_netclrexceptions metrics:", desc, err)
+		return err
+	}
+	return nil
+}
+
+type Win32_PerfRawData_NETFramework_NETCLRExceptions struct {
+	Name string
+
+	NumberofExcepsThrown       uint32
+	NumberofExcepsThrownPersec uint32
+	NumberofFiltersPersec      uint32
+	NumberofFinallysPersec     uint32
+	ThrowToCatchDepthPersec    uint32
+}
+
+func (c *NETFramework_NETCLRExceptionsCollector) collect(ch chan<- prometheus.Metric) (*prometheus.Desc, error) {
+	var dst []Win32_PerfRawData_NETFramework_NETCLRExceptions
+	q := wmi.CreateQuery(&dst, "")
+	if err := wmi.Query(q, &dst); err != nil {
+		return nil, err
+	}
+
+	for _, process := range dst {
+
+		if process.Name == "_Global_" {
+			continue
+		}
+
+		ch <- prometheus.MustNewConstMetric(
+			c.NumberofExcepsThrown,
+			prometheus.CounterValue,
+			float64(process.NumberofExcepsThrown),
+			process.Name,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			c.NumberofFilters,
+			prometheus.CounterValue,
+			float64(process.NumberofFiltersPersec),
+			process.Name,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			c.NumberofFinallys,
+			prometheus.CounterValue,
+			float64(process.NumberofFinallysPersec),
+			process.Name,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			c.ThrowToCatchDepth,
+			prometheus.CounterValue,
+			float64(process.ThrowToCatchDepthPersec),
+			process.Name,
+		)
+	}
+
+	return nil, nil
+}