RFC3339Nano and flags to configure level & format (#23)

README.md

@@ -100,7 +100,15 @@ The following flags are supported:
   -node-delete-gc-interval duration
     	Frequency of node garbage collection. (default 1h0m0s)
   -node-delete-workers int
-    	Maximum concurrent node delete operations. (default 5)   
+    	Maximum concurrent node delete operations. (default 5)
+  -zap-devel
+    	Development Mode defaults(encoder=consoleEncoder,logLevel=Debug,stackTraceLevel=Warn). Production Mode defaults(encoder=jsonEncoder,logLevel=Info,stackTraceLevel=Error)
+  -zap-encoder value
+    	Zap log encoding (one of 'json' or 'console')
+  -zap-log-level value
+    	Zap Level to configure the verbosity of logging. Can be one of 'debug', 'info', 'error', or any integer value > 0 which corresponds to custom debug levels of increasing verbosity
+  -zap-stacktrace-level value
+    	Zap Level at and above which stacktraces are captured (one of 'info', 'error').
 ```
 
 ## Setup/Development

main.go

@@ -58,6 +58,7 @@ func init() {
 }
 
 func main() {
+	var loggerOpts zap.Options
 	var metricsAddr string
 	var enableLeaderElection bool
 	var apiSecretPath string
@@ -93,9 +94,17 @@ func main() {
 	flag.IntVar(&nsDeleteWorkers, "namespace-delete-workers", 5, "Maximum concurrent namespace delete operations.")
 	flag.IntVar(&nodeLabelSyncWorkers, "node-label-sync-workers", 5, "Maximum concurrent node label sync operations.")
 
+	loggerOpts.BindFlags(flag.CommandLine)
 	flag.Parse()
 
-	ctrl.SetLogger(zap.New(zap.StacktraceLevel(zapcore.FatalLevel)))
+	f := func(ec *zapcore.EncoderConfig) {
+		ec.TimeKey = "timestamp"
+		ec.EncodeTime = zapcore.RFC3339NanoTimeEncoder
+	}
+	encoderOpts := func(o *zap.Options) {
+		o.EncoderConfigOptions = append(o.EncoderConfigOptions, f)
+	}
+	ctrl.SetLogger(zap.New(zap.UseFlagOptions(&loggerOpts), zap.StacktraceLevel(zapcore.PanicLevel), encoderOpts))
 
 	// Block startup until there is a working StorageOS API connection.  Unless
 	// we loop here, we'll get a number of failures on cold cluster start as it