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Logging format argument - logfmt / json #142

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17 changes: 13 additions & 4 deletions main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -76,6 +76,7 @@ type CmdConfig struct {
ScaleTimeout time.Duration
useAzAwareHashRing bool
podAzAnnotationKey string
LogFormat string
}

func parseFlags() CmdConfig {
Expand All @@ -98,18 +99,26 @@ func parseFlags() CmdConfig {
flag.DurationVar(&config.ScaleTimeout, "scale-timeout", defaultScaleTimeout, "A timeout to wait for receivers to really start after they report healthy")
flag.BoolVar(&config.useAzAwareHashRing, "use-az-aware-hashring", false, "A boolean to use az aware hashring to comply with Thanos v0.32+")
flag.StringVar(&config.podAzAnnotationKey, "pod-az-annotation-key", "", "pod annotation key for AZ Info, If not specified or key not found, will use sts name as AZ key")
flag.StringVar(&config.LogFormat, "log.format", "logfmt", "Log format to use. Possible options: logfmt or json.")
flag.Parse()

return config
}

func main() {
logger := log.NewLogfmtLogger(log.NewSyncWriter(os.Stderr))
logger = log.WithPrefix(logger, "ts", log.DefaultTimestampUTC)
logger = log.WithPrefix(logger, "caller", log.DefaultCaller)

config := parseFlags()

var logger log.Logger
if config.LogFormat == "json" {
logger = log.NewJSONLogger(log.NewSyncWriter(os.Stderr))
logger = log.WithPrefix(logger, "ts", log.DefaultTimestampUTC)
logger = log.WithPrefix(logger, "caller", log.DefaultCaller)
} else {
logger = log.NewLogfmtLogger(log.NewSyncWriter(os.Stderr))
logger = log.WithPrefix(logger, "ts", log.DefaultTimestampUTC)
logger = log.WithPrefix(logger, "caller", log.DefaultCaller)
}

var tmpControllerLabel string
if len(config.StatefulSetLabel) > 0 {
tmpControllerLabel = config.StatefulSetLabel
Expand Down