Add debug check to logp.Logger

CHANGELOG.asciidoc

@@ -74,6 +74,7 @@ https://github.com/elastic/beats/compare/v6.4.0...master[Check the HEAD diff]
   internal monitoring data. {issue}7807[7807]
 - Allow for cloud-id to specify a custom port. This makes cloud-id work in ECE contexts. {pull}7887[7887]
 - Add support to grow or shrink an existing spool file between restarts. {pull}7859[7859]
+- Add debug check to logp.Logger {pull}7965[7965]
 
 *Auditbeat*
 

libbeat/logp/logger.go

@@ -19,6 +19,7 @@ package logp
 
 import (
 	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
 )
 
 // LogOption configures a Logger.
@@ -96,6 +97,11 @@ func (l *Logger) DPanic(args ...interface{}) {
 	l.sugar.DPanic(args...)
 }
 
+// IsDebug checks to see if the given logger is Debug enabled.
+func (l *Logger) IsDebug() bool {
+	return l.sugar.Desugar().Check(zapcore.DebugLevel, "") != nil
+}
+
 // Sprintf
 
 // Debugf uses fmt.Sprintf to construct and log a message.