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Code Issues Releases Wiki Activity

Properly check for errors

Browse source 
Signed-off-by: Knut Ahlers <knut@ahlers.me>
This commit is contained in:
Knut Ahlers 2021-02-09 00:44:14 +01:00
parent bee38cbff8
commit e617b92069
Signed by: luzifer
GPG key ID: 0066F03ED215AD7D
5 changed files with 41 additions and 17 deletions
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17
fs20.go
View file

@ -5,6 +5,7 @@ import (
"strings"
mqtt "github.com/eclipse/paho.mqtt.golang"
"github.com/pkg/errors"
log "github.com/sirupsen/logrus"
)
@ -34,13 +35,13 @@ func publishFS20ToCUL(client mqtt.Client, msg mqtt.Message) {
}
func publishFS20ToMQTT(housecode, device, command string) error {
tok := brokerClient.Publish(
strings.Join([]string{"culmqtt", fmt.Sprintf("%s%s", housecode, device), "state"}, "/"),
0x01, // QOS Level 1: At least once
true,
command,
return errors.Wrap(
mqttTokToErr(brokerClient.Publish(
strings.Join([]string{"culmqtt", fmt.Sprintf("%s%s", housecode, device), "state"}, "/"),
0x01, // QOS Level 1: At least once
true,
command,
)),
"publishing message",
)
tok.Wait()
return tok.Error()
}

1
go.mod
View file

@ -6,6 +6,7 @@ require (
github.com/Luzifer/rconfig/v2 v2.2.1
github.com/eclipse/paho.mqtt.golang v1.3.2
github.com/jacobsa/go-serial v0.0.0-20180131005756-15cf729a72d4
github.com/pkg/errors v0.9.1
github.com/sirupsen/logrus v1.7.0
github.com/spf13/pflag v1.0.5 // indirect
golang.org/x/net v0.0.0-20210119194325-5f4716e94777 // indirect

2
go.sum
View file

@ -8,6 +8,8 @@ github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0U
github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
github.com/jacobsa/go-serial v0.0.0-20180131005756-15cf729a72d4 h1:G2ztCwXov8mRvP0ZfjE6nAlaCX2XbykaeHdbT6KwDz0=
github.com/jacobsa/go-serial v0.0.0-20180131005756-15cf729a72d4/go.mod h1:2RvX5ZjVtsznNZPEt4xwJXNJrM3VTZoQf7V6gk0ysvs=
github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/sirupsen/logrus v1.7.0 h1:ShrD1U9pZB12TX0cVy0DtePoCH97K8EtX+mg7ZARUtM=
github.com/sirupsen/logrus v1.7.0/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=

14
main.go
View file

@ -5,6 +5,7 @@ import (
"fmt"
"io"
"os"
"time"
"github.com/Luzifer/rconfig/v2"
"github.com/jacobsa/go-serial/serial"
@ -13,12 +14,13 @@ import (
var (
cfg = struct {
CULDevice string `flag:"cul-device" default:"/dev/ttyACM0" description:"TTY of the CUL to connect to"`
LogLevel string `flag:"log-level" default:"info" description:"Log level (debug, info, warn, error, fatal)"`
MQTTHost string `flag:"mqtt-host" default:"tcp://127.0.0.1:1883" description:"Connection URI for the broker"`
MQTTUser string `flag:"mqtt-user" default:"" description:"Username for broker connection"`
MQTTPass string `flag:"mqtt-pass" default:"" description:"Password for broker connection"`
VersionAndExit bool `flag:"version" default:"false" description:"Prints current version and exits"`
CULDevice string `flag:"cul-device" default:"/dev/ttyACM0" description:"TTY of the CUL to connect to"`
LogLevel string `flag:"log-level" default:"info" description:"Log level (debug, info, warn, error, fatal)"`
MQTTHost string `flag:"mqtt-host" default:"tcp://127.0.0.1:1883" description:"Connection URI for the broker"`
MQTTUser string `flag:"mqtt-user" default:"" description:"Username for broker connection"`
MQTTPass string `flag:"mqtt-pass" default:"" description:"Password for broker connection"`
MQTTTimeout time.Duration `flag:"mqtt-timeout" default:"2s" description:"Timeout for MQTT actions"`
VersionAndExit bool `flag:"version" default:"false" description:"Prints current version and exits"`
}{}
port io.ReadWriteCloser

24
mqtt.go
View file

@ -1,6 +1,11 @@
package main
import mqtt "github.com/eclipse/paho.mqtt.golang"
import (
"errors"
mqtt "github.com/eclipse/paho.mqtt.golang"
log "github.com/sirupsen/logrus"
)
var brokerClient mqtt.Client
@ -12,6 +17,19 @@ func init() {
brokerClient = mqtt.NewClient(opts)
brokerClient.Connect().Wait()
brokerClient.Subscribe("culmqtt/+/send", 0x01, publishFS20ToCUL)
if err := mqttTokToErr(brokerClient.Connect()); err != nil {
log.WithError(err).Fatal("Connect to MQTT broker")
}
if err := mqttTokToErr(brokerClient.Subscribe("culmqtt/+/send", 0x01, publishFS20ToCUL)); err != nil {
log.WithError(err).Fatal("Subscribe to topic")
}
}
func mqttTokToErr(tok mqtt.Token) error {
if !tok.WaitTimeout(cfg.MQTTTimeout) {
return errors.New("command timed out")
}
return tok.Error()
}