Merge pull request 'Update module github.com/prometheus/client_golang to v1.19.0' (#9) from renovate/github.com-prometheus-client_golang-1.x into master

Reviewed-on: #9

README.md

@@ -0,0 +1,21 @@
+# Prusa Connect Prometheus Exporter
+
+Version v0.1.0 of this exporter supports the pre-4.4.0 changes to the Prusa Connect API (non-API-key version).
+
+Current master branch supports the new, 4.4.0-beta2 release of Prusa Connect as well as the older API.
+
+## Usage
+
+`./prusa-connect-exporter -h`
+
+* `apikey`
+    Prusa Connect API key (see Main Menu -> Settings -> Network on the printer).
+    If no key is provided, exporter assumes the older API layout when querying the printer.
+* `hostname`
+    Hostname the Prusa Connect API is available at (assumes http) (default "localhost")
+* `interval`
+    How often, in seconds, to query the API (default 2)
+* `path`
+    Local path to export metrics on (default "metrics")
+* `port`
+    Local port to export metrics on (default "2112")

go.mod

@@ -2,16 +2,17 @@ module git.yetaga.in/alazyreader/prusa-connect-exporter
 
 go 1.17
 
-require github.com/prometheus/client_golang v1.12.1
+require github.com/prometheus/client_golang v1.19.0
 
 require (
 	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/cespare/xxhash/v2 v2.1.2 // indirect
-	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
-	github.com/prometheus/client_model v0.2.0 // indirect
-	github.com/prometheus/common v0.32.1 // indirect
-	github.com/prometheus/procfs v0.7.3 // indirect
-	golang.org/x/sys v0.0.0-20220114195835-da31bd327af9 // indirect
-	google.golang.org/protobuf v1.26.0 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
+	github.com/matttproud/golang_protobuf_extensions/v2 v2.0.0 // indirect
+	github.com/prometheus/client_model v0.5.0 // indirect
+	github.com/prometheus/common v0.48.0 // indirect
+	github.com/prometheus/procfs v0.12.0 // indirect
+	golang.org/x/sys v0.16.0 // indirect
+	google.golang.org/protobuf v1.32.0 // indirect
 )

go.sum

@@ -46,6 +46,8 @@ github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE=
 github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
+github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
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@@ -63,9 +65,11 @@ github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2
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+github.com/go-kit/log v0.2.0/go.mod h1:NwTd00d/i8cPZ3xOwwiv2PO5MOcx78fFErGNcVmBjv0=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
 github.com/go-logfmt/logfmt v0.5.0/go.mod h1:wCYkCAKZfumFQihp8CzCvQ3paCTfi41vtzG1KdI/P7A=
+github.com/go-logfmt/logfmt v0.5.1/go.mod h1:WYhtIu8zTZfxdn5+rREduYbwxfcBr/Vr6KEVveWlfTs=
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@@ -96,6 +100,8 @@ github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw
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+github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
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 github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
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@@ -142,6 +148,10 @@ github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
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@@ -159,22 +169,62 @@ github.com/prometheus/client_golang v1.7.1/go.mod h1:PY5Wy2awLA44sXw4AOSfFBetzPP
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@@ -257,12 +307,15 @@ golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81R
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 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -307,15 +360,31 @@ golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210603081109-ebe580a85c40/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220114195835-da31bd327af9 h1:XfKQ4OlFl8okEOr5UvAqFRVj8pY/4yfcXrddB8qAbU0=
 golang.org/x/sys v0.0.0-20220114195835-da31bd327af9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a h1:dGzPydgVsqGcTRVwiLJ1jVbufYwmzD3LfVPLKsKg+0k=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
+golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.11.0 h1:eG7RXZHdqOJ1i+0lgLgCpSXAp6M3LYlAo6osgSi0xOM=
+golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.15.0 h1:h48lPFYpsTvQJZF4EKyI4aLHaev3CxivZmv7yZig9pc=
+golang.org/x/sys v0.15.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.16.0 h1:xWw16ngr6ZMtmxDyKyIgsE93KNKz5HKmMa3b8ALHidU=
+golang.org/x/sys v0.16.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
@@ -440,6 +509,14 @@ google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlba
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0 h1:bxAC2xTBsZGibn2RTntX0oH50xLsqy1OxA9tTL3p/lk=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
+google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+google.golang.org/protobuf v1.30.0 h1:kPPoIgf3TsEvrm0PFe15JQ+570QVxYzEvvHqChK+cng=
+google.golang.org/protobuf v1.30.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
+google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+google.golang.org/protobuf v1.32.0 h1:pPC6BG5ex8PDFnkbrGU3EixyhKcQ2aDuBS36lqK/C7I=
+google.golang.org/protobuf v1.32.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

main.go

@@ -15,7 +15,8 @@ import (
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
 
-type Metrics struct {
+// original /api/telemetry type struct
+type MetricsV1 struct {
 	TempNozzle    int     `json:"temp_nozzle"`
 	TempBed       int     `json:"temp_bed"`
 	Material      string  `json:"material"`
@@ -29,68 +30,135 @@ type Metrics struct {
 	ProjectName   string  `json:"project_name"`
 }
 
+// new 4.4.0+ /api/printer struct
+type MetricsV2 struct {
+	Telemetry   Telemetry   `json:"telemetry"`
+	Temperature Temperature `json:"temperature"`
+	State       State       `json:"state"`
+}
+
+type Telemetry struct {
+	TempBed    float64 `json:"temp-bed"`
+	TempNozzle float64 `json:"temp-nozzle"`
+	PrintSpeed int     `json:"print-speed"`
+	ZHeight    float64 `json:"z-height"`
+	Material   string  `json:"material"`
+}
+
+type Temperature struct {
+	Tool0 Tempatures `json:"tool0"`
+	Bed   Tempatures `json:"bed"`
+}
+
+type Tempatures struct {
+	Actual  float64 `json:"actual"`
+	Target  float64 `json:"target"`
+	Display float64 `json:"display"`
+	Offset  float64 `json:"offset"`
+}
+
+type State struct {
+	Text  string `json:"text"`
+	Flags Flags  `json:"flags"`
+}
+
+type Flags struct {
+	Operational   bool `json:"operational"`
+	Paused        bool `json:"paused"`
+	Printing      bool `json:"printing"`
+	Cancelling    bool `json:"cancelling"`
+	Pausing       bool `json:"pausing"`
+	SdReady       bool `json:"sdReady"`
+	Error         bool `json:"error"`
+	ClosedOnError bool `json:"closedOnError"`
+	Ready         bool `json:"ready"`
+	Busy          bool `json:"busy"`
+}
+
+// /api/job struct
+type JobV2 struct {
+	State    string   `json:"state"`
+	Job      Job      `json:"job"`
+	Progress Progress `json:"progress"`
+}
+
+type File struct {
+	Name    string `json:"name"`
+	Path    string `json:"path"`
+	Display string `json:"display"`
+}
+
+type Job struct {
+	EstimatedPrintTime int  `json:"estimatedPrintTime"`
+	File               File `json:"file"`
+}
+
+type Progress struct {
+	Completion    float64 `json:"completion"`
+	PrintTime     int     `json:"printTime"`
+	PrintTimeLeft int     `json:"printTimeLeft"`
+}
+
 type Config struct {
 	QueryHostname string
 	QueryInterval int
 	Port          string
 	Path          string
+	APIKey        string
 }
 
 var (
-	opsFlowFactor = prometheus.NewGauge(prometheus.GaugeOpts{
-		Namespace: "prusa_connect",
-		Name:      "flow_factor",
-		Help:      "Current flow factor, as a unitless number",
-	})
-	opsPrintSpeed = prometheus.NewGauge(prometheus.GaugeOpts{
-		Namespace: "prusa_connect",
-		Name:      "printing_speed",
-		Help:      "Current print speed, as a percentage",
-	})
-	opsZPosition = prometheus.NewGauge(prometheus.GaugeOpts{
-		Namespace: "prusa_connect",
-		Name:      "z_position",
-		Help:      "Vertical depth, in mm, of the Z head",
-	})
-	opsBed = prometheus.NewGauge(prometheus.GaugeOpts{
-		Namespace: "prusa_connect",
-		Name:      "temp_bed",
-		Help:      "Temperature, in celsius, of the print bed",
-	})
-	opsNozzle = prometheus.NewGauge(prometheus.GaugeOpts{
-		Namespace: "prusa_connect",
-		Name:      "temp_nozzle",
-		Help:      "Temperature, in celsius, of the print nozzle",
-	})
-	opsProgress = prometheus.NewGauge(prometheus.GaugeOpts{
-		Namespace: "prusa_connect",
-		Name:      "progress",
-		Help:      "Current print completeness, as a percentage",
-	})
-	opsDuration = prometheus.NewGauge(prometheus.GaugeOpts{
-		Namespace: "prusa_connect",
-		Name:      "duration",
-		Help:      "Duration of current print job, as seconds since start",
-	})
-	opsRemaining = prometheus.NewGauge(prometheus.GaugeOpts{
-		Namespace: "prusa_connect",
-		Name:      "remaining",
-		Help:      "Estimated remaining time of current print job, as seconds",
-	})
 	errCount = 0
+	gauges   = map[string]prometheus.Gauge{
+		"flow_factor": prometheus.NewGauge(prometheus.GaugeOpts{
+			Namespace: "prusa_connect",
+			Name:      "flow_factor",
+			Help:      "Current flow factor, as a unitless number",
+		}),
+		"printing_speed": prometheus.NewGauge(prometheus.GaugeOpts{
+			Namespace: "prusa_connect",
+			Name:      "printing_speed",
+			Help:      "Current print speed, as a percentage",
+		}),
+		"z_position": prometheus.NewGauge(prometheus.GaugeOpts{
+			Namespace: "prusa_connect",
+			Name:      "z_position",
+			Help:      "Vertical depth, in mm, of the Z head",
+		}),
+		"temp_bed": prometheus.NewGauge(prometheus.GaugeOpts{
+			Namespace: "prusa_connect",
+			Name:      "temp_bed",
+			Help:      "Temperature, in celsius, of the print bed",
+		}),
+		"temp_nozzle": prometheus.NewGauge(prometheus.GaugeOpts{
+			Namespace: "prusa_connect",
+			Name:      "temp_nozzle",
+			Help:      "Temperature, in celsius, of the print nozzle",
+		}),
+		"progress": prometheus.NewGauge(prometheus.GaugeOpts{
+			Namespace: "prusa_connect",
+			Name:      "progress",
+			Help:      "Current print completeness, as a percentage",
+		}),
+		"duration": prometheus.NewGauge(prometheus.GaugeOpts{
+			Namespace: "prusa_connect",
+			Name:      "duration",
+			Help:      "Duration of current print job, as seconds since start",
+		}),
+		"remaining": prometheus.NewGauge(prometheus.GaugeOpts{
+			Namespace: "prusa_connect",
+			Name:      "remaining",
+			Help:      "Estimated remaining time of current print job, as seconds",
+		}),
+	}
 )
 
 func errLog(err error) {
 	errCount++
 	// reset metrics
-	opsFlowFactor.Set(0)
-	opsPrintSpeed.Set(0)
-	opsZPosition.Set(0)
-	opsBed.Set(0)
-	opsNozzle.Set(0)
-	opsProgress.Set(0)
-	opsDuration.Set(0)
-	opsRemaining.Set(0)
+	for _, g := range gauges {
+		g.Set(0)
+	}
 	if errCount == 5 {
 		log.Printf("suppressing further error logging")
 		return
@@ -109,42 +177,124 @@ func recordMetrics(ctx context.Context, config Config) {
 				return
 			default:
 				time.Sleep(time.Second * time.Duration(config.QueryInterval))
-				res, err := http.Get(config.QueryHostname + "/api/telemetry")
-				if err != nil {
-					errLog(err)
+				if config.APIKey == "" {
+					parseMetricsV1(ctx, config)
 					break
 				}
-				b, err := io.ReadAll(res.Body)
-				if err != nil {
-					errLog(err)
-					break
-				}
-				t := &Metrics{}
-				err = json.Unmarshal(b, t)
-				if err != nil {
-					errLog(err)
-					break
-				}
-				if errCount != 0 {
-					log.Printf("connection established")
-				}
-				errCount = 0
-				opsFlowFactor.Set(float64(t.FlowFactor))
-				opsPrintSpeed.Set(float64(t.PrintingSpeed))
-				opsZPosition.Set(t.ZPosition)
-				opsBed.Set(float64(t.TempBed))
-				opsNozzle.Set(float64(t.TempNozzle))
-				opsProgress.Set(float64(t.Progress))
-				opsDuration.Set(float64(parseDuration(t.PrintDur) / time.Second))
-				estimatedTimeRemaining, err := strconv.ParseFloat(t.TimeEst, 64)
-				if err == nil {
-					opsRemaining.Set(float64(estimatedTimeRemaining))
-				}
+				parseMetricsV2(ctx, config)
 			}
 		}
 	}()
 }
 
+func parseMetricsV1(ctx context.Context, config Config) {
+	t, err := getTelemetry(config.QueryHostname)
+	if err != nil {
+		errLog(err)
+		return
+	}
+	if errCount != 0 {
+		errCount = 0
+		log.Printf("connection established")
+	}
+	gauges["flow_factor"].Set(float64(t.FlowFactor))
+	gauges["printing_speed"].Set(float64(t.PrintingSpeed))
+	gauges["z_position"].Set(t.ZPosition)
+	gauges["temp_bed"].Set(float64(t.TempBed))
+	gauges["temp_nozzle"].Set(float64(t.TempNozzle))
+	gauges["progress"].Set(float64(t.Progress))
+	gauges["duration"].Set(float64(parseDuration(t.PrintDur) / time.Second))
+	estimatedTimeRemaining, err := strconv.ParseFloat(t.TimeEst, 64)
+	if err == nil {
+		gauges["remaining"].Set(float64(estimatedTimeRemaining))
+	}
+}
+
+func parseMetricsV2(ctx context.Context, config Config) {
+	t, err := getPrinter(config.Port, config.APIKey)
+	if err != nil {
+		errLog(err)
+		return
+	}
+	j, err := getJob(config.Port, config.APIKey)
+	if err != nil {
+		errLog(err)
+		return
+	}
+	if errCount != 0 {
+		errCount = 0
+		log.Printf("connection established")
+	}
+	gauges["printing_speed"].Set(float64(t.Telemetry.PrintSpeed))
+	gauges["z_position"].Set(t.Telemetry.ZHeight)
+	gauges["temp_bed"].Set(float64(t.Telemetry.TempBed))
+	gauges["temp_nozzle"].Set(float64(t.Telemetry.TempNozzle))
+	gauges["progress"].Set(float64(j.Progress.Completion) * 100)
+	gauges["duration"].Set(float64(j.Progress.PrintTime))
+	gauges["remaining"].Set(float64(j.Progress.PrintTimeLeft))
+}
+
+func getJob(hostname, apiKey string) (*JobV2, error) {
+	r, err := http.NewRequest(http.MethodGet, hostname+"/api/job", nil)
+	if err != nil {
+		return &JobV2{}, err
+	}
+	r.Header.Set("X-Api-Key", apiKey)
+	res, err := http.DefaultClient.Do(r)
+	if err != nil {
+		return &JobV2{}, err
+	}
+	b, err := io.ReadAll(res.Body)
+	if err != nil {
+		return &JobV2{}, err
+	}
+	j := &JobV2{}
+	err = json.Unmarshal(b, j)
+	if err != nil {
+		return &JobV2{}, err
+	}
+	return j, nil
+}
+
+func getPrinter(hostname, apiKey string) (*MetricsV2, error) {
+	r, err := http.NewRequest(http.MethodGet, hostname+"/api/printer", nil)
+	if err != nil {
+		return &MetricsV2{}, err
+	}
+	r.Header.Set("X-Api-Key", apiKey)
+	res, err := http.DefaultClient.Do(r)
+	if err != nil {
+		return &MetricsV2{}, err
+	}
+	b, err := io.ReadAll(res.Body)
+	if err != nil {
+		return &MetricsV2{}, err
+	}
+	j := &MetricsV2{}
+	err = json.Unmarshal(b, j)
+	if err != nil {
+		return &MetricsV2{}, err
+	}
+	return j, nil
+}
+
+func getTelemetry(hostname string) (*MetricsV1, error) {
+	res, err := http.Get(hostname + "/api/telemetry")
+	if err != nil {
+		return &MetricsV1{}, err
+	}
+	b, err := io.ReadAll(res.Body)
+	if err != nil {
+		return &MetricsV1{}, err
+	}
+	t := &MetricsV1{}
+	err = json.Unmarshal(b, t)
+	if err != nil {
+		return &MetricsV1{}, err
+	}
+	return t, nil
+}
+
 // taking a guess on proper parsing here...
 func parseDuration(d string) time.Duration {
 	dur := 0
@@ -187,6 +337,8 @@ func main() {
 	flag.StringVar(&port, "port", "2112", "Local port to export metrics on")
 	var path string
 	flag.StringVar(&path, "path", "metrics", "Local path to export metrics on")
+	var apiKey string
+	flag.StringVar(&apiKey, "apikey", "", "Prusa Connect API key (see Main Menu -> Settings -> Network on the printer)")
 	flag.Parse()
 
 	if queryInterval < 1 {
@@ -198,18 +350,13 @@ func main() {
 		QueryInterval: queryInterval,
 		Port:          port,
 		Path:          path,
+		APIKey:        apiKey,
 	}
 
 	r := prometheus.NewRegistry()
-	r.MustRegister(opsNozzle)
-	r.MustRegister(opsBed)
-	r.MustRegister(opsZPosition)
-	r.MustRegister(opsPrintSpeed)
-	r.MustRegister(opsFlowFactor)
-	r.MustRegister(opsProgress)
-	r.MustRegister(opsDuration)
-	r.MustRegister(opsRemaining)
-
+	for _, g := range gauges {
+		r.MustRegister(g)
+	}
 	recordMetrics(context.Background(), config)
 
 	log.Printf("starting exporter on :%v", config.Port)

renovate.json

@@ -0,0 +1,3 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json"
+}