// messageHandler is called when a new message arrives
func handleMessage(client *MQTT.Client, msg MQTT.Message) {
// Unmarshal JSON to RxPacket
var packet shared.RxPacket
err := json.Unmarshal(msg.Payload(), &packet)
if err != nil {
log.WithField("topic", msg.Topic()).WithError(err).Warn("Failed to unmarshal JSON.")
return
}
// Filter messages by gateway
if gateway != "" && packet.GatewayEui != gateway {
return
}
// Decode payload
data, err := base64.StdEncoding.DecodeString(packet.Data)
if err != nil {
log.WithField("topic", msg.Topic()).WithError(err).Warn("Failed to decode Payload.")
return
}
ctx := log.WithFields(log.Fields{
"devAddr": packet.NodeEui,
})
if showMeta {
ctx = ctx.WithFields(log.Fields{
"gatewayEui": packet.GatewayEui,
"time": packet.Time,
"frequency": *packet.Frequency,
"dataRate": packet.DataRate,
"rssi": *packet.Rssi,
"snr": *packet.Snr,
})
}
if showRaw {
ctx = ctx.WithField("data", fmt.Sprintf("%x", data))
}
if showTiming {
rawData, err := base64.StdEncoding.DecodeString(packet.Data)
if err == nil {
airtime, err := util.CalculatePacketTime(len(rawData), packet.DataRate)
if err == nil {
ctx = ctx.WithField("airtime", fmt.Sprintf("%.1f ms", airtime))
}
}
}
// Check for unprintable characters
unprintable, _ := regexp.Compile(`[^[:print:]]`)
if unprintable.Match(data) {
ctx.Debug("Received Message")
} else {
ctx.WithField("message", fmt.Sprintf("%s", data)).Info("Received Message")
}
}
// Multiple fields can be set, via chaining, or WithFields().
func Example_multipleFields() {
log.WithFields(log.Fields{
"user": "******",
"file": "sloth.png",
"type": "image/png",
}).Info("upload")
}
//Info prints impulse with label
func (c Correction) Info(label string) {
log.WithFields(log.Fields{
"M": c.Move,
"D": fmt.Sprintf("%3d", c.Degree()),
"T": c.Type(),
}).Info(label)
}
func TestFielder(t *testing.T) {
h := memory.New()
log.SetHandler(h)
pet := &Pet{"Tobi", 3}
log.WithFields(pet).Info("add pet")
e := h.Entries[0]
assert.Equal(t, log.Fields{"name": "Tobi", "age": 3}, e.Fields)
}
func (m *Markup) printStackTree() {
for _, one := range m.Impulses {
log.WithFields(log.Fields{
"Time": fmt.Sprintf("%s->%s", one.Base.T, one.End.T),
"Move": fmt.Sprintf("%.2f->%.2f", one.Base.P, one.End.P),
"Prev": one.PrevWave(),
"Next": one.NextWave(),
}).Debug("Imp")
}
for _, one := range m.Corrections {
log.WithFields(log.Fields{
"Time": fmt.Sprintf("%s->%s", one.Base.T, one.End.T),
"Move": fmt.Sprintf("%.2f->%.2f", one.Base.P, one.End.P),
"Prev": one.PrevWave(),
"Next": one.NextWave(),
}).Debug("Cor")
}
}
func main() {
log.SetHandler(text.New(os.Stderr))
ctx := log.WithFields(log.Fields{
"app": "myapp",
"env": "prod",
})
for range time.Tick(time.Second) {
_ = work(ctx)
}
}
func (m *Markup) printStack() {
for _, one := range m.Impulses {
log.WithFields(log.Fields{
"D": one.Duration(),
"P": fmt.Sprintf("%.2f->%.2f", one.Base.P, one.End.P),
"W1": one.W1,
"W2": one.W2,
"W3": one.W3,
"W4": one.W4,
"W5": one.W5,
}).Debug("Imp")
}
for _, one := range m.Corrections {
log.WithFields(log.Fields{
"D": one.Duration(),
"P": fmt.Sprintf("%.2f->%.2f", one.Base.P, one.End.P),
"T": one.Type(),
}).Debug("Corr")
}
}
func main() {
log.SetHandler(json.New(os.Stderr))
ctx := log.WithFields(log.Fields{
"file": "something.png",
"type": "image/png",
"user": "******",
})
for range time.Tick(time.Millisecond * 200) {
ctx.Info("upload")
ctx.Info("upload complete")
ctx.Warn("upload retry")
ctx.WithError(errors.New("unauthorized")).Error("upload failed")
}
}
func main() {
log.SetHandler(multi.New(
text.New(os.Stderr),
kinesis.New("logs"),
))
ctx := log.WithFields(log.Fields{
"file": "something.png",
"type": "image/png",
"user": "******",
})
for range time.Tick(time.Millisecond * 100) {
ctx.Info("upload")
ctx.Info("upload complete")
}
}
// Run terraform command in infrastructure directory.
func (p *Proxy) Run(args ...string) error {
if p.shouldInjectVars(args) {
args = append(args, p.functionVars()...)
}
log.WithFields(log.Fields{
"args": args,
}).Debug("terraform")
cmd := exec.Command("terraform", args...)
cmd.Env = append(os.Environ(), fmt.Sprintf("AWS_REGION=%s", p.Region))
cmd.Stdin = os.Stdin
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
cmd.Dir = filepath.Join(Dir, p.Environment)
return cmd.Run()
}
func main() {
flag.Parse()
if *cfgAddr == "" {
fmt.Println("required flag not provided: --config-http-address")
os.Exit(1)
}
if *dnsAddr == "" {
fmt.Println("required flag not provided: --lookupd-dns-address")
os.Exit(1)
}
log.SetHandler(text.New(os.Stderr))
ctx := log.WithFields(log.Fields{
"cfgAddr": *cfgAddr,
"dnsAddr": *dnsAddr,
"ldPort": *ldPort,
})
ips, err := dnscfg.Get(dnsAddr, ldPort)
if err != nil {
ctx.WithError(err).Error("dns lookup")
os.Exit(1)
}
if len(ips) == 0 {
ctx.Error("no ip addresses found")
os.Exit(1)
}
cfgURL := "http://" + *cfgAddr + "/config/nsqlookupd_tcp_addresses"
err = httpcfg.Set(cfgURL, ips)
if err != nil {
ctx.WithError(err).Error("setting config")
} else {
ctx.WithField("ips", ips).Info("setting config")
}
go configLoop(ctx, cfgURL)
http.ListenAndServe(":6060", nil)
}
func (m *Markup) addCorrection(correction *Correction) *Correction {
context := log.WithFields(log.Fields{
"M": correction.Move,
"D": correction.Degree,
})
for _, one := range m.Corrections {
if one.Move.Base.P == correction.Move.Base.P &&
one.Move.End.P == correction.Move.End.P {
context.Debug("Correction found")
return one
}
}
context.Debug("+Correction")
m.Corrections = append(m.Corrections, correction)
return correction
}
func (m *Markup) addImpulse(impulse *Impulse) *Impulse {
context := log.WithFields(log.Fields{
"M": impulse.Move,
"D": impulse.Degree,
})
for _, one := range m.Impulses {
if one.Move.Base.P == impulse.Move.Base.P &&
one.Move.End.P == impulse.Move.End.P {
context.Debug("Impulse found")
return one
}
}
context.Debug("+Impulse")
m.Impulses = append(m.Impulses, impulse)
return impulse
}
func main() {
esClient := elastic.New("http://192.168.99.101:9200")
esClient.HTTPClient = &http.Client{
Timeout: 5 * time.Second,
}
e := es.New(&es.Config{
Client: esClient,
BufferSize: 100,
})
t := text.New(os.Stderr)
log.SetHandler(multi.New(e, t))
ctx := log.WithFields(log.Fields{
"file": "something.png",
"type": "image/png",
"user": "******",
})
go func() {
for range time.Tick(time.Millisecond * 200) {
ctx.Info("upload")
ctx.Info("upload complete")
ctx.Warn("upload retry")
ctx.WithError(errors.New("unauthorized")).Error("upload failed")
ctx.Errorf("failed to upload %s", "img.png")
}
}()
go func() {
for range time.Tick(time.Millisecond * 25) {
ctx.Info("upload")
}
}()
select {}
}
func main() {
log.SetHandler(cli.Default)
log.SetLevel(log.DebugLevel)
ctx := log.WithFields(log.Fields{
"file": "something.png",
"type": "image/png",
"user": "******",
})
go func() {
for range time.Tick(time.Second) {
ctx.Debug("doing stuff")
}
}()
go func() {
for range time.Tick(100 * time.Millisecond) {
ctx.Info("uploading")
ctx.Info("upload complete")
}
}()
go func() {
for range time.Tick(time.Second) {
ctx.Warn("upload slow")
}
}()
go func() {
for range time.Tick(2 * time.Second) {
err := errors.New("boom")
ctx.WithError(err).Error("upload failed")
}
}()
select {}
}
func main() {
flag.Parse()
log.SetHandler(text.New(os.Stderr))
if *verbose {
log.SetLevel(log.DebugLevel)
} else {
log.SetLevel(log.InfoLevel)
}
if _, err := os.Stat(tpl); os.IsNotExist(err) {
log.WithError(err).Fatal("template provided does not exist")
}
ctx := log.WithFields(log.Fields{
"app": "spacegophers",
})
s := NewServer(ctx, *addr, tpl)
// serve the server
s.Serve()
}
//Info prints impulse with label
func (i Impulse) Info(label string) {
log.WithFields(log.Fields{
"M": i.Move,
"D": fmt.Sprintf("%3d", i.Degree()),
}).Info(label)
}
//Info corrections selector
func (w Wave) Info(label string) {
log.WithFields(log.Fields{
"M": w.Move,
"D": w.Degree(),
}).Info(label)
}
