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succd: Export all process values as prometheus metrics

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For more detailed monitoring, let's export all process values that are
exposed to the web API as prometheus metrics.
This commit is contained in:
Rahix 2024-10-06 10:50:05 +02:00
parent bd40c4f8df
commit 918a020e68
1 changed files with 46 additions and 2 deletions
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48
succbone/succd/http.go
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@ -163,16 +163,60 @@ func (s *webServer) viewStream(w http.ResponseWriter, r *http.Request) {
} }
} }
func boolToFloat(b bool) float32 {
if b {
return 1.0
} else {
return 0.0
}
}
// httpMetrics serves minimalistic Prometheus-compatible metrics. // httpMetrics serves minimalistic Prometheus-compatible metrics.
func (s *webServer) viewMetrics(w http.ResponseWriter, r *http.Request) { func (s *webServer) viewMetrics(w http.ResponseWriter, r *http.Request) {
// TODO(q3k): also serve Go stuff using the actual Prometheus metrics client // TODO(q3k): also serve Go stuff using the actual Prometheus metrics client
// library. // library.
// TODO(q3k): serve the rest of the data model // TODO(q3k): serve the rest of the data model
state := s.d.snapshot() state := s.d.snapshot()
mbar := state.piraniMbar100.mbar
// sem_pressure_mbar is meant to represent the fused pressure value
// from all data sources once we have more vacuum sensors in the
// system. sem_pirani_mbar is just the reading from the pirani gauge.
fmt.Fprintf(w, "# HELP sem_pressure_mbar Pressure in the SEM chamber, in millibar\n") fmt.Fprintf(w, "# HELP sem_pressure_mbar Pressure in the SEM chamber, in millibar\n")
fmt.Fprintf(w, "# TYPE sem_pressure_mbar gauge\n") fmt.Fprintf(w, "# TYPE sem_pressure_mbar gauge\n")
fmt.Fprintf(w, "sem_pressure_mbar %f\n", mbar) fmt.Fprintf(w, "sem_pressure_mbar %f\n", state.piraniMbar100.mbar)
fmt.Fprintf(w, "# HELP sem_pirani_mbar Pressure reading by the Pirani gauge, in millibar\n")
fmt.Fprintf(w, "# TYPE sem_pirani_mbar gauge\n")
fmt.Fprintf(w, "sem_pirani_mbar %f\n", state.piraniMbar100.mbar)
fmt.Fprintf(w, "# HELP sem_pirani_volts Voltage output from the Pirani gauge, in volts\n")
fmt.Fprintf(w, "# TYPE sem_pirani_volts gauge\n")
fmt.Fprintf(w, "sem_pirani_volts %f\n", state.piraniVolts100.avg)
fmt.Fprintf(w, "# HELP sem_pirani_failsafe Whether pirani gauge failsafe mode is active (boolean)\n")
fmt.Fprintf(w, "# TYPE sem_pirani_failsafe gauge\n")
fmt.Fprintf(w, "sem_pirani_failsafe %f\n", boolToFloat(state.safety.failsafe))
fmt.Fprintf(w, "# HELP sem_dp_lockout Whether diffusion pump lockout is active (boolean)\n")
fmt.Fprintf(w, "# TYPE sem_dp_lockout gauge\n")
fmt.Fprintf(w, "sem_dp_lockout %f\n", boolToFloat(state.safety.highPressure))
fmt.Fprintf(w, "# HELP sem_dp_running Whether the diffusion pump is running (boolean)\n")
fmt.Fprintf(w, "# TYPE sem_dp_running gauge\n")
fmt.Fprintf(w, "sem_dp_running %f\n", boolToFloat(state.dpOn))
fmt.Fprintf(w, "# HELP sem_rp_running Whether the roughing pump is running (boolean)\n")
fmt.Fprintf(w, "# TYPE sem_rp_running gauge\n")
fmt.Fprintf(w, "sem_rp_running %f\n", boolToFloat(state.rpOn))
rough, high := state.vacuumStatus()
fmt.Fprintf(w, "# HELP sem_vacuum_rough_reached Whether the rough vacuum threshold has been passed (boolean)\n")
fmt.Fprintf(w, "# TYPE sem_vacuum_rough_reached gauge\n")
fmt.Fprintf(w, "sem_vacuum_rough_reached %f\n", boolToFloat(rough))
fmt.Fprintf(w, "# HELP sem_vacuum_high_reached Whether the high vacuum threshold has been passed (boolean)\n")
fmt.Fprintf(w, "# TYPE sem_vacuum_high_reached gauge\n")
fmt.Fprintf(w, "sem_vacuum_high_reached %f\n", boolToFloat(high))
} }
func (s *webServer) viewRoughingPumpEnable(w http.ResponseWriter, r *http.Request) { func (s *webServer) viewRoughingPumpEnable(w http.ResponseWriter, r *http.Request) {