Stabilize

cmd/fermentord/config.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"log"
+	"time"
 
 	"git.joco.dk/sng/fermentord/internal/controllers"
 	"git.joco.dk/sng/fermentord/pkg/temperature"
@@ -9,27 +10,11 @@ import (
 	"github.com/spf13/viper"
 )
 
-type configuration struct {
+func loadConfiguration() *controllers.ControllerConfig {
-	controllers.ControllerConfig
+	hub := sentry.CurrentHub().Clone()
+	defer hub.Flush(10 * time.Second)
 
-	NATS struct {
+	viper.SetDefault("main.data_path", "./data.txt")
-		URL     string `mapstructure:"url"`
-		Stream  string `mapstructure:"stream"`
-		Subject struct {
-			Temp  string `mapstructure:"temp"`
-			State string `mapstructure:"state"`
-		} `mapstructure:"subject"`
-	} `mapstructure:"nats"`
-
-	HTTP struct {
-		Port int16 `mapstructure:"port"`
-	} `mapstructure:"http"`
-
-	DataPath string `mapstructure:"data_path"`
-}
-
-func loadConfiguration() *configuration {
-	viper.SetDefault("data_path", "./data.txt")
 	viper.SetDefault("nats.url", "nats.service.consul")
 	viper.SetDefault("nats.stream", "FERMENTOR")
 	viper.SetDefault("nats.subject.state", "FERMENTOR.state")
@@ -38,33 +23,49 @@ func loadConfiguration() *configuration {
 	viper.SetDefault("pid.kp", 2.0)
 	viper.SetDefault("pid.ki", 0.0001)
 	viper.SetDefault("pid.kd", 2.0)
+	viper.SetDefault("limits.min_chamber_temp", 5)
+	viper.SetDefault("limits.max_chamber_temp", 40)
+	viper.SetDefault("limits.min_cooler_runtime_secs", 300)
+	viper.SetDefault("limits.max_cooler_runtime_secs", 86400)
+	viper.SetDefault("limits.min_cooler_cooldown_secs", 300)
 
 	viper.AddConfigPath("/etc")
 	viper.AddConfigPath("/usr/local/etc")
 	viper.AddConfigPath(".")
 	viper.SetConfigName("fermentord")
-	viper.SetConfigType("hcl")
+	viper.SetConfigType("toml")
-	viper.AutomaticEnv()
+	//viper.AutomaticEnv()
 
 	if err := viper.ReadInConfig(); err != nil {
 		log.Printf("Error loading configuration: %v", err)
 	}
 
-	config := &configuration{}
+	config := &controllers.ControllerConfig{}
-	if err := viper.Unmarshal(&config); err != nil {
+	if err := viper.Unmarshal(config); err != nil {
-		sentry.CaptureException(err)
+		hub.CaptureException(err)
 		log.Fatal(err)
 	}
 
+	log.Printf("Min chamber temp : %v", config.Limits.MinChamberTemperature)
+	log.Printf("Max chamber temp : %v", config.Limits.MaxChamberTemperature)
+	log.Printf("Fermentation temp: %v", config.FermentationTemperature)
+	log.Printf("Delta temp cool  : %v", config.DeltaTemperatureCool)
+	log.Printf("Delta temp heat  : %v", config.DeltaTemperatureHeat)
+
 	return config
 }
 
-func reloadConfiguration(config *configuration, ctrl *controllers.ChamberController) {
+func reloadConfiguration(config *controllers.ControllerConfig, ctrl *controllers.ChamberController) {
+
+	log.Printf("Ambient sensor: %v", config.Sensor.Ambient)
+	log.Printf("Chamber sensor: %v", config.Sensor.Chamber)
+	log.Printf("Wort sensor   : %v", config.Sensor.Wort)
+
 	temperature.ConfigUpdates <- []string{
 		config.Sensor.Ambient,
 		config.Sensor.Chamber,
 		config.Sensor.Wort,
 	}
 
-	ctrl.ConfigUpdates <- config.ControllerConfig
+	ctrl.ConfigUpdates <- *config
 }

cmd/fermentord/config.hcl

@@ -1,34 +0,0 @@
-// fermentord
-
-fermentation_temp = 15.0
-delta_temp = 0.5
-
-pid {
-  kp = 2.0
-  ki = 0.0001
-  kd = 2.0
-}
-
-sensors {
-  wort = "asdf"
-  chamber = "sldkfj"
-  ambient = "skdjf"
-}
-
-limits {
-  min_chamber_temp = 5
-  min_cooler_runtime_secs = 300
-  max_cooler_runtime_secs = 86400
-  min_cooler_cooldown_secs = 300
-}
-
-nats {
-  url = "nats://nats.service.consul"
-  stream = "FERMENTOR"
-  subject {
-    temp = "FERMENTOR.temp"
-    state = "FERMENTOR.state"
-  }
-}
-
-data_path = "/var/lib/fermentord/data.txt"

cmd/fermentord/db.go

@@ -22,8 +22,11 @@ func persistData(ctx context.Context, wg *sync.WaitGroup, chState <-chan control
 
 	defer wg.Done()
 
+	hub := sentry.CurrentHub().Clone()
+
 	f, err = os.OpenFile("data.txt", os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0640)
 	if err != nil {
+		hub.CaptureException(err)
 		log.Fatal(err)
 	}
 	defer f.Close()
@@ -37,13 +40,13 @@ func persistData(ctx context.Context, wg *sync.WaitGroup, chState <-chan control
 
 			err := datlog("%v STATE %v", time.Now().Unix(), controllers.ChamberStateMap[state])
 			if err != nil {
-				sentry.CaptureException(err)
+				hub.CaptureException(err)
 				log.Printf("Error persisting state change: %v", err)
 			}
 
 			err = f.Sync()
 			if err != nil {
-				sentry.CaptureException(err)
+				hub.CaptureException(err)
 				log.Printf("Error flushing data file: %v", err)
 			}
 
@@ -54,13 +57,13 @@ func persistData(ctx context.Context, wg *sync.WaitGroup, chState <-chan control
 
 			err := datlog("%v TEMP %v %v", t.Time.Unix(), t.Sensor, t.MilliDegrees)
 			if err != nil {
-				sentry.CaptureException(err)
+				hub.CaptureException(err)
 				log.Printf("Error persisting temperature reading: %v", err)
 			}
 
 			err = f.Sync()
 			if err != nil {
-				sentry.CaptureException(err)
+				hub.CaptureException(err)
 				log.Printf("Error flushing data file: %v", err)
 			}
 

cmd/fermentord/main.go

@@ -22,15 +22,18 @@ import (
 	"github.com/spf13/viper"
 )
 
-func mainLoop(ctx context.Context, wg *sync.WaitGroup, js nats.JetStream, config *configuration) {
+func mainLoop(ctx context.Context, wg *sync.WaitGroup, js nats.JetStream, config *controllers.ControllerConfig) {
 	defer wg.Done()
 
+	hub := sentry.CurrentHub().Clone()
+	defer hub.Flush(10 * time.Second)
+
 	temperature.Initialize()
 
 	// Controller
 	chCtrlTemp := make(chan temperature.TemperatureReading, 10)
 	defer close(chCtrlTemp)
-	ctrl := controllers.NewChamberController("Chamber 1", config.ControllerConfig, chCtrlTemp)
+	ctrl := controllers.NewChamberController("Chamber 1", *config, chCtrlTemp)
 
 	// Configuration reload
 	viper.OnConfigChange(func(in fsnotify.Event) {
@@ -41,7 +44,7 @@ func mainLoop(ctx context.Context, wg *sync.WaitGroup, js nats.JetStream, config
 
 	gpio, err := hw.NewGpio()
 	if err != nil {
-		sentry.CaptureException(err)
+		hub.CaptureException(err)
 		log.Fatal(err)
 	}
 	defer gpio.Close()
@@ -54,7 +57,7 @@ func mainLoop(ctx context.Context, wg *sync.WaitGroup, js nats.JetStream, config
 	wg.Add(3)
 	go persistData(ctx, wg, chDbState, chDbTemp)
 	go ctrl.Run(ctx, wg)
-	go temperature.PollSensors(ctx, wg, 10*time.Second)
+	go temperature.PollSensors(ctx, wg, 1*time.Second)
 
 	for {
 		select {
@@ -64,7 +67,7 @@ func mainLoop(ctx context.Context, wg *sync.WaitGroup, js nats.JetStream, config
 
 			b, err := json.Marshal(reading)
 			if err != nil {
-				sentry.CaptureException(err)
+				hub.CaptureException(err)
 				log.Printf("Error marshaling JSON: %v", err)
 				break
 			}
@@ -72,23 +75,26 @@ func mainLoop(ctx context.Context, wg *sync.WaitGroup, js nats.JetStream, config
 			// Publish to NATS
 			_, err = js.Publish(config.NATS.Subject.Temp, b)
 			if err != nil {
-				sentry.CaptureException(err)
+				hub.CaptureException(err)
 				log.Printf("Error publishing to NATS: %v", err)
 			}
 
 		case state := <-ctrl.C:
 			switch state {
 			case controllers.ChamberStateIdle:
+				log.Printf("Setting chamber state idle")
 				metrics.State.Set(metrics.MetricStateIdle)
 				gpio.StopCooler()
 				gpio.StopHeater()
 
 			case controllers.ChamberStateCooling:
+				log.Printf("Setting chamber state cooling")
 				metrics.State.Set(metrics.MetricStateCooling)
 				gpio.StopHeater()
 				gpio.StartCooler()
 
 			case controllers.ChamberStateHeating:
+				log.Printf("Setting chamber state heating")
 				metrics.State.Set(metrics.MetricStateHeating)
 				gpio.StopCooler()
 				gpio.StartHeater()
@@ -99,7 +105,7 @@ func mainLoop(ctx context.Context, wg *sync.WaitGroup, js nats.JetStream, config
 			// Publish to NATS
 			_, err = js.Publish(config.NATS.Subject.State, []byte(controllers.ChamberStateMap[state]))
 			if err != nil {
-				sentry.CaptureException(err)
+				hub.CaptureException(err)
 				log.Printf("Error publishing to NATS: %v", err)
 			}
 
@@ -113,7 +119,7 @@ func main() {
 	// Sentry
 	err := sentry.Init(sentry.ClientOptions{
 		Dsn:              "https://7278625538334140991ce433e0ad292f@sentry.joco.dk/24",
-		TracesSampleRate: 0.01,
+		TracesSampleRate: 0.1,
 	})
 	if err != nil {
 		log.Fatal(err)
@@ -139,6 +145,8 @@ func main() {
 		Subjects: []string{
 			fmt.Sprintf("%v.*", config.NATS.Stream),
 		},
+		Replicas:  2,
+		Retention: nats.WorkQueuePolicy,
 	})
 	if err != nil {
 		log.Fatal(err)
@@ -178,10 +186,14 @@ func main() {
 
 func shutdownHTTP(ctx context.Context, wg *sync.WaitGroup, srv *http.Server) {
 	defer wg.Done()
+
+	hub := sentry.CurrentHub().Clone()
+	defer hub.Flush(10 * time.Second)
+
 	ctx2, cancel := context.WithTimeout(ctx, 10*time.Second)
 	defer cancel()
 	if err := srv.Shutdown(ctx2); err != nil {
-		sentry.CaptureException(err)
+		hub.CaptureException(err)
 		log.Printf("Error shutting down HTTP server: %v", err)
 	}
 }

cmd/filer/main.go

@@ -0,0 +1,126 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"log"
+	"sync"
+	"time"
+
+	"git.joco.dk/sng/fermentord/pkg/daemon"
+	"github.com/getsentry/sentry-go"
+	"github.com/jackc/pgx/v4"
+	"github.com/jackc/pgx/v4/pgxpool"
+	"github.com/nats-io/nats.go"
+)
+
+func serve(ctx context.Context, wg *sync.WaitGroup, sub *nats.Subscription, db *pgxpool.Pool) {
+	hub := sentry.CurrentHub().Clone()
+	defer wg.Done()
+
+	for {
+		m, err := sub.NextMsgWithContext(ctx)
+		if errors.Is(err, nats.ErrInvalidContext) {
+			return
+		}
+		if errors.Is(err, nats.ErrBadSubscription) {
+			hub.CaptureException(err)
+			log.Fatal(err)
+		}
+		if errors.Is(err, nats.ErrConnectionClosed) {
+			hub.CaptureException(err)
+			time.Sleep(10 * time.Second)
+			continue
+		}
+		if errors.Is(err, nats.ErrTimeout) {
+			hub.CaptureException(err)
+			log.Print(err)
+			continue
+		}
+		if err != nil {
+			hub.CaptureException(err)
+			log.Fatal(err)
+		}
+
+		err = db.BeginFunc(ctx, func(tx pgx.Tx) error {
+			switch m.Subject {
+			case "state":
+				q := "INSERT INTO fermentor.state (c_time, state) VALUES ($1, $2)"
+				// TODO Unmarshal JSON.
+				if _, err := tx.Query(ctx, q, ); err != nil {
+					return err
+				}
+
+			case "temp":
+				q := "INSERT INTO fermentor.temperature_reading (c_time, sensor, millis) VALUES ($1, $2, $3)"
+				// TODO Unmarshal JSON.
+				if _, err := tx.Query(ctx, q); err != nil {
+					return err
+				}
+			}
+
+			if err := tx.Commit(ctx); err != nil {
+				return err
+			}
+
+			return nil
+		})
+		if err != nil {
+			hub.CaptureException(err)
+			log.Print(err)
+			continue
+		}
+
+		if err := m.AckSync(); err != nil {
+			hub.CaptureException(err)
+			log.Print(err)
+			continue
+		}
+	}
+}
+
+func main() {
+	// Sentry
+	err := sentry.Init(sentry.ClientOptions{
+		Dsn:              "https://7278625538334140991ce433e0ad292f@sentry.joco.dk/24",
+		TracesSampleRate: 1.0,
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer sentry.Flush(10 * time.Second)
+
+	// NATS
+	nc, err := nats.Connect("nats://nats.service.consul")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	js, err := nc.JetStream(nats.PublishAsyncMaxPending(256))
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	sub, err := js.SubscribeSync("FERMENTOR.*", nats.Durable("filer"))
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	ctx, shutdown := context.WithCancel(context.Background())
+	wg := &sync.WaitGroup{}
+
+	db, err := pgxpool.Connect(ctx, "pgdb1.service.s18.consul")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	wg.Add(1)
+	log.Print("Ready")
+	go serve(ctx, wg, sub, db)
+	daemon.WaitForSignalsDefault()
+
+	log.Print("Shutting down")
+	shutdown()
+	log.Print("Shutdown complete")
+
+}

go.mod

@@ -5,6 +5,7 @@ go 1.17
 require (
 	github.com/fsnotify/fsnotify v1.4.7
 	github.com/getsentry/sentry-go v0.11.0
+	github.com/jackc/pgx/v4 v4.15.0
 	github.com/nats-io/nats.go v1.13.1-0.20220121202836-972a071d373d
 	github.com/prometheus/client_golang v1.1.0
 	github.com/spf13/viper v1.3.2
@@ -15,6 +16,14 @@ require (
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/golang/protobuf v1.4.3 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/jackc/chunkreader/v2 v2.0.1 // indirect
+	github.com/jackc/pgconn v1.11.0 // indirect
+	github.com/jackc/pgio v1.0.0 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgproto3/v2 v2.2.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20200714003250-2b9c44734f2b // indirect
+	github.com/jackc/pgtype v1.10.0 // indirect
+	github.com/jackc/puddle v1.2.1 // indirect
 	github.com/magiconair/properties v1.8.1 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
 	github.com/mitchellh/mapstructure v1.1.2 // indirect
@@ -30,11 +39,9 @@ require (
 	github.com/spf13/cast v1.3.0 // indirect
 	github.com/spf13/jwalterweatherman v1.0.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
-	github.com/stretchr/testify v1.5.1 // indirect
 	golang.org/x/crypto v0.0.0-20220112180741-5e0467b6c7ce // indirect
 	golang.org/x/sys v0.0.0-20220111092808-5a964db01320 // indirect
 	golang.org/x/text v0.3.6 // indirect
-	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 	google.golang.org/protobuf v1.25.0 // indirect
 	gopkg.in/yaml.v2 v2.2.8 // indirect
 )

go.sum

@@ -5,6 +5,7 @@ github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03
 github.com/CloudyKit/fastprinter v0.0.0-20200109182630-33d98a066a53/go.mod h1:+3IMCy2vIlbG1XG/0ggNQv0SvxCAIpPM5b1nCz56Xno=
 github.com/CloudyKit/jet/v3 v3.0.0/go.mod h1:HKQPgSJmdK8hdoAbKUUWajkHyHo4RaU5rMdUywE7VMo=
 github.com/Joker/hpp v1.0.0/go.mod h1:8x5n+M1Hp5hC0g8okX3sR3vFQwynaX/UgSOM9MeBKzY=
+github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
 github.com/Shopify/goreferrer v0.0.0-20181106222321-ec9c9a553398/go.mod h1:a1uqRtAwp2Xwc6WNPJEufxJ7fx3npB4UV/JOLmbu5I0=
 github.com/ajg/form v1.5.1/go.mod h1:uL1WgH+h2mgNtvBq0339dVnzXdBETtL2LeUXaIv25UY=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
@@ -17,6 +18,8 @@ github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/cockroachdb/apd v1.1.0 h1:3LFP3629v+1aKXU5Q37mxmRxX/pIu1nijXydLShEq5I=
+github.com/cockroachdb/apd v1.1.0/go.mod h1:8Sl8LxpKi29FqWXR16WEFZRNSz3SoPzUzeMeY4+DwBQ=
 github.com/codegangsta/inject v0.0.0-20150114235600-33e0aa1cb7c0/go.mod h1:4Zcjuz89kmFXt9morQgcfYZAYZ5n8WHjt81YYWIwtTM=
 github.com/coreos/bbolt v1.3.3/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
 github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
@@ -24,9 +27,11 @@ github.com/coreos/etcd v3.3.15+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc
 github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
 github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
 github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
+github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/coreos/go-systemd v0.0.0-20190719114852-fd7a80b32e1f/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
 github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
+github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -52,13 +57,17 @@ github.com/go-check/check v0.0.0-20180628173108-788fd7840127/go.mod h1:9ES+weclK
 github.com/go-errors/errors v1.0.1 h1:LUHzmkK3GUKUrL/1gfBUxAHzcev3apQlezX/+O7ma6w=
 github.com/go-errors/errors v1.0.1/go.mod h1:f4zRHt4oKfwPJE5k8C9vpYG+aDHdBFUsgrm6/TyX73Q=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
+github.com/go-kit/log v0.1.0/go.mod h1:zbhenjAZHb184qTLMA9ZjW7ThYL0H2mk7Q6pNt4vbaY=
 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=
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 github.com/smartystreets/goconvey v0.0.0-20190731233626-505e41936337/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
@@ -229,11 +309,13 @@ github.com/spf13/viper v1.3.2 h1:VUFqw5KcqRf7i70GOzW7N+Q7+gxVBkSSqiXB12+JQ4M=
 github.com/spf13/viper v1.3.2/go.mod h1:ZiWeW+zYFKm7srdB9IoDzzZXaJaI5eL9QjNiN/DMA2s=
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 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
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 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
-github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
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@@ -256,23 +338,43 @@ github.com/yalp/jsonpath v0.0.0-20180802001716-5cc68e5049a0/go.mod h1:/LWChgwKmv
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@@ -285,6 +387,7 @@ golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn
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@@ -304,22 +407,27 @@ golang.org/x/sys v0.0.0-20181205085412-a5c9d58dba9a/go.mod h1:STP8DvDyc/dI5b8T5h
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@@ -334,7 +442,16 @@ golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3
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@@ -364,9 +481,11 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8
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 gopkg.in/go-playground/assert.v1 v1.2.1/go.mod h1:9RXL0bg/zibRAgZUYszZSwO/z8Y/a8bDuhia5mkpMnE=
 gopkg.in/go-playground/validator.v8 v8.18.2/go.mod h1:RX2a/7Ha8BgOhfk7j780h4/u/RRjR0eouCJSH80/M2Y=
+gopkg.in/inconshreveable/log15.v2 v2.0.0-20180818164646-67afb5ed74ec/go.mod h1:aPpfJ7XW+gOuirDoZ8gHhLh3kZ1B08FtV2bbmy7Jv3s=
 gopkg.in/ini.v1 v1.48.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/ini.v1 v1.51.1/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/mgo.v2 v2.0.0-20180705113604-9856a29383ce/go.mod h1:yeKp02qBN3iKW1OzL3MGk2IdtZzaj7SFntXj72NppTA=
@@ -379,6 +498,9 @@ gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20191120175047-4206685974f2/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=

internal/controllers/chamber.go

@@ -2,11 +2,13 @@ package controllers
 
 import (
 	"context"
+	"fmt"
 	"log"
 	"sync"
 	"time"
 
 	"git.joco.dk/sng/fermentord/pkg/temperature"
+	"github.com/getsentry/sentry-go"
 )
 
 type ChamberState int
@@ -43,6 +45,7 @@ type ChamberController struct {
 	chTemp <-chan temperature.TemperatureReading
 
 	pid *PIDController
+	hub *sentry.Hub
 }
 
 func NewChamberController(name string, config ControllerConfig, chTemp <-chan temperature.TemperatureReading) *ChamberController {
@@ -54,11 +57,13 @@ func NewChamberController(name string, config ControllerConfig, chTemp <-chan te
 		chTemp:        chTemp,
 		chamberState:  ChamberStateIdle,
 		ConfigUpdates: make(chan ControllerConfig, 1),
+		hub:           sentry.CurrentHub().Clone(),
 	}
 }
 
 func (p *ChamberController) Run(ctx context.Context, wg *sync.WaitGroup) {
 	defer wg.Done()
+	defer p.hub.Flush(10 * time.Second)
 
 	ticker := time.NewTicker(1 * time.Second)
 
@@ -95,6 +100,7 @@ func (p *ChamberController) setTemperature(t temperature.TemperatureReading) {
 
 	default:
 		log.Printf("Unknown sensor: sensor=%v temp=%v", t.Sensor, t.MilliDegrees)
+		p.hub.CaptureMessage(fmt.Sprintf("Unknown sensor: sensor=%v temp=%v", t.Sensor, t.MilliDegrees))
 	}
 }
 
@@ -115,7 +121,7 @@ func (p *ChamberController) setChamberState(state ChamberState) {
 }
 
 func (p *ChamberController) computeChamberState() ChamberState {
-	offset := p.pid.Compute(p.wortTemperature, p.config.FermentationTemperature)
+	offset := p.pid.Compute(p.chamberTemperature, p.config.FermentationTemperature)
 	chamberTargetTemp := p.config.FermentationTemperature + offset
 
 	runtimeSecs := time.Since(p.lastChamberStateChange).Seconds()
@@ -135,15 +141,23 @@ func (p *ChamberController) computeChamberState() ChamberState {
 		if p.chamberTemperature < p.config.Limits.MinChamberTemperature {
 			return ChamberStateIdle
 		}
+
+		// Limit chamber max. temp.
+		if p.chamberTemperature > p.config.Limits.MaxChamberTemperature {
+			return ChamberStateIdle
+		}
 	}
 
 	var next ChamberState
-	heater := p.wortTemperature < p.config.FermentationTemperature-p.config.DeltaTemperature && p.chamberTemperature < chamberTargetTemp-p.config.DeltaTemperature
+	heater := p.chamberTemperature < p.config.FermentationTemperature-p.config.DeltaTemperatureHeat &&
-	cooler := p.wortTemperature > p.config.FermentationTemperature+p.config.DeltaTemperature && p.chamberTemperature > chamberTargetTemp+p.config.DeltaTemperature
+		p.chamberTemperature < chamberTargetTemp-p.config.DeltaTemperatureHeat
+	cooler := p.chamberTemperature > p.config.FermentationTemperature+p.config.DeltaTemperatureCool &&
+		p.chamberTemperature > chamberTargetTemp+p.config.DeltaTemperatureCool
 
 	if cooler && heater {
 		// This should not happen!
-		log.Print("Trying to set cooler and heater on at the same time. This should NOT happen!")
+		log.Print("Trying to set cooler and heater on at the same time. This should NOT happen! Setting IDLE mode.")
+		p.hub.CaptureMessage("Trying to set cooler and heater on at the same time")
 		next = ChamberStateIdle
 	} else if !cooler && !heater {
 		next = ChamberStateIdle

internal/controllers/config.go

@@ -1,6 +1,21 @@
 package controllers
 
 type ControllerConfig struct {
+	NATS struct {
+		URL     string `mapstructure:"url"`
+		Stream  string `mapstructure:"stream"`
+		Subject struct {
+			Temp  string `mapstructure:"temp"`
+			State string `mapstructure:"state"`
+		} `mapstructure:"subject"`
+	} `mapstructure:"nats"`
+
+	HTTP struct {
+		Port int16 `mapstructure:"port"`
+	} `mapstructure:"http"`
+
+	DataPath string `mapstructure:"data_path"`
+
 	Sensor struct {
 		Wort    string `mapstructure:"wort"`
 		Chamber string `mapstructure:"chamber"`
@@ -8,10 +23,12 @@ type ControllerConfig struct {
 	} `mapstructure:"sensors"`
 
 	FermentationTemperature float64 `mapstructure:"fermentation_temp"`
-	DeltaTemperature        float64 `mapstructure:"delta_temp"`
+	DeltaTemperatureCool    float64 `mapstructure:"delta_temp_cool"`
+	DeltaTemperatureHeat    float64 `mapstructure:"delta_temp_heat"`
 
 	Limits struct {
 		MinChamberTemperature float64 `mapstructure:"min_chamber_temp"`
+		MaxChamberTemperature float64 `mapstructure:"max_chamber_temp"`
 		MinCoolerRuntimeSecs  float64 `mapstructure:"min_cooler_runtime_secs"`  // 900
 		MaxCoolerRuntimeSecs  float64 `mapstructure:"max_cooler_runtime_secs"`  // 86400
 		MinCoolerCooldownSecs float64 `mapstructure:"min_cooler_cooldown_secs"` // 900

internal/controllers/pid.go

@@ -45,9 +45,11 @@ func (p *PIDController) Compute(input float64, setpoint float64) float64 {
 
 	p.lastOutput = math.Max(math.Min(pv+iv+dv, p.ubound), p.lbound)
 
-	metrics.PID.WithLabelValues("kp", "main").Set(p.kp)
+	metrics.PID.WithLabelValues("pv", "main").Set(pv)
-	metrics.PID.WithLabelValues("ki", "main").Set(p.ki)
+	metrics.PID.WithLabelValues("dv", "main").Set(dv)
-	metrics.PID.WithLabelValues("kd", "main").Set(p.kd)
+	metrics.PID.WithLabelValues("iv", "main").Set(iv)
+	metrics.PID.WithLabelValues("offset", "main").Set(p.lastOutput)
+	metrics.PID.WithLabelValues("setpoint", "main").Set(setpoint)
 
 	return p.lastOutput
 }

internal/hw/gpio.go

@@ -5,8 +5,8 @@ import (
 )
 
 const (
-	pinCoolerPower = 20
+	pinCoolerPower = 23
-	pinHeaterPower = 21
+	pinHeaterPower = 24
 
 	off = 0
 	on  = 1

pkg/temperature/ds18b20.go

@@ -43,6 +43,8 @@ func Initialize() {
 }
 
 func PollSensors(ctx context.Context, wg *sync.WaitGroup, readingInterval time.Duration) {
+	hub := sentry.CurrentHub().Clone()
+	defer hub.Flush(10 * time.Second)
 	defer wg.Done()
 
 	if readingInterval < sensorConversionTime {
@@ -55,14 +57,21 @@ func PollSensors(ctx context.Context, wg *sync.WaitGroup, readingInterval time.D
 	for {
 		select {
 		case <-ticker.C:
+			start := time.Now()
+
 			// Trigger a bulk read to start conversion on all sensors.
 			if err := triggerBulkRead(); err != nil {
+				hub.CaptureException(err)
 				log.Print(err)
 				break
 			}
 
+			// Ensure that we wait for sensors to convert data.
+			deltaSleep := sensorConversionTime - time.Since(start)
+			if deltaSleep > 0 {
 				// Wait for sensors to convert data.
-			time.Sleep(sensorConversionTime)
+				time.Sleep(deltaSleep)
+			}
 
 			// Read all sensors.
 			readSensors()
@@ -78,13 +87,16 @@ func PollSensors(ctx context.Context, wg *sync.WaitGroup, readingInterval time.D
 }
 
 func readSensors() {
+	hub := sentry.CurrentHub().Clone()
+	defer hub.Flush(10 * time.Second)
+
 	for _, sensor := range sensors {
 		start := time.Now()
 		t, err := read(sensor)
 		dur := time.Since(start).Seconds()
 
 		if err != nil {
-			sentry.CaptureException(err)
+			hub.CaptureException(err)
 			log.Printf("Error reading temperature sensor %v: %v", sensor, err)
 			continue
 		}
@@ -96,11 +108,11 @@ func readSensors() {
 		}
 
 		metrics.TemperatureSensorReadingDegreesCelcius.
-			WithLabelValues("sensor", sensor).
+			WithLabelValues(sensor).
 			Set(r.Degrees())
 
 		metrics.TemperatureSensorReadingDurationSeconds.
-			WithLabelValues("sensor", sensor).
+			WithLabelValues(sensor).
 			Observe(dur)
 
 		C <- r
@@ -108,19 +120,19 @@ func readSensors() {
 }
 
 func triggerBulkRead() error {
-	f, err := os.OpenFile("/sys/bus/w1/w1_bus_master/therm_bulk_read", os.O_APPEND, os.ModeAppend)
+	f, err := os.OpenFile("/sys/bus/w1/devices/w1_bus_master1/therm_bulk_read", os.O_WRONLY, 0644)
 	if err != nil {
 		return err
 	}
 	defer f.Close()
 
-	_, err = f.WriteString("trigger\n")
+	_, err = f.WriteString("trigger")
 	return err
 }
 
 // read returns the temperature of the specified sensor in millidegrees celcius.
 func read(sensor string) (int64, error) {
-	path := filepath.Join("/sys/bus/w1/devices", sensor, "/w1_slave")
+	path := filepath.Join("/sys/bus/w1/devices", sensor, "w1_slave")
 	data, err := ioutil.ReadFile(path)
 	if err != nil {
 		return 0.0, err