syslog: add Spew option.

This is a debug print that spews any arguments passed in.

syslog/logger.go

@@ -7,6 +7,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/davecgh/go-spew/spew"
 	gsyslog "github.com/hashicorp/go-syslog"
 )
 
@@ -52,6 +53,12 @@ func (log *logger) println(p gsyslog.Priority, args ...interface{}) {
 	}
 }
 
+func (log *logger) spew(args ...interface{}) {
+	if log.p == gsyslog.LOG_DEBUG {
+		spew.Dump(args...)
+	}
+}
+
 func (log *logger) adjustPriority(level string) error {
 	priority, ok := priorities[level]
 	if !ok {
@@ -252,6 +259,11 @@ func Fatalf(format string, args ...interface{}) {
 	os.Exit(1)
 }
 
+// Spew will pretty print the args if the logger is set to DEBUG priority.
+func Spew(args ...interface{}) {
+	log.spew(args...)
+}
+
 func ChangePriority(level string) error {
 	return log.adjustPriority(level)
 }