add warning log level

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

internal/config/config.go

@@ -111,7 +111,7 @@ func (cfg *Application) Build() error {
 			case v >= 2:
 				cfg.Log.LevelOpt = logrus.DebugLevel
 			default:
-				cfg.Log.LevelOpt = logrus.ErrorLevel
+				cfg.Log.LevelOpt = logrus.WarnLevel
 			}
 		}
 	}

internal/log/log.go

@@ -8,6 +8,18 @@ func Errorf(format string, args ...interface{}) {
 	Log.Errorf(format, args...)
 }
 
+func Error(args ...interface{}) {
+	Log.Error(args...)
+}
+
+func Warnf(format string, args ...interface{}) {
+	Log.Warnf(format, args...)
+}
+
+func Warn(args ...interface{}) {
+	Log.Warn(args...)
+}
+
 func Infof(format string, args ...interface{}) {
 	Log.Infof(format, args...)
 }

internal/log/nop.go

@@ -3,6 +3,9 @@ package log
 type nopLogger struct{}
 
 func (l *nopLogger) Errorf(format string, args ...interface{}) {}
+func (l *nopLogger) Error(args ...interface{})                 {}
+func (l *nopLogger) Warnf(format string, args ...interface{})  {}
+func (l *nopLogger) Warn(args ...interface{})                  {}
 func (l *nopLogger) Infof(format string, args ...interface{})  {}
 func (l *nopLogger) Info(args ...interface{})                  {}
 func (l *nopLogger) Debugf(format string, args ...interface{}) {}

internal/logger/logrus.go

@@ -84,6 +84,14 @@ func (l *LogrusLogger) Infof(format string, args ...interface{}) {
 	l.Logger.Infof(format, args...)
 }
 
+func (l *LogrusLogger) Warnf(format string, args ...interface{}) {
+	l.Logger.Warnf(format, args...)
+}
+
+func (l *LogrusLogger) Errorf(format string, args ...interface{}) {
+	l.Logger.Errorf(format, args...)
+}
+
 func (l *LogrusLogger) Debug(args ...interface{}) {
 	l.Logger.Debug(args...)
 }
@@ -92,8 +100,12 @@ func (l *LogrusLogger) Info(args ...interface{}) {
 	l.Logger.Info(args...)
 }
 
-func (l *LogrusLogger) Errorf(format string, args ...interface{}) {
-	l.Logger.Errorf(format, args...)
+func (l *LogrusLogger) Warn(args ...interface{}) {
+	l.Logger.Warn(args...)
+}
+
+func (l *LogrusLogger) Error(args ...interface{}) {
+	l.Logger.Error(args...)
 }
 
 func (l *LogrusNestedLogger) Debugf(format string, args ...interface{}) {
@@ -104,6 +116,14 @@ func (l *LogrusNestedLogger) Infof(format string, args ...interface{}) {
 	l.Logger.Infof(format, args...)
 }
 
+func (l *LogrusNestedLogger) Warnf(format string, args ...interface{}) {
+	l.Logger.Warnf(format, args...)
+}
+
+func (l *LogrusNestedLogger) Errorf(format string, args ...interface{}) {
+	l.Logger.Errorf(format, args...)
+}
+
 func (l *LogrusNestedLogger) Debug(args ...interface{}) {
 	l.Logger.Debug(args...)
 }
@@ -112,6 +132,10 @@ func (l *LogrusNestedLogger) Info(args ...interface{}) {
 	l.Logger.Info(args...)
 }
 
-func (l *LogrusNestedLogger) Errorf(format string, args ...interface{}) {
-	l.Logger.Errorf(format, args...)
+func (l *LogrusNestedLogger) Warn(args ...interface{}) {
+	l.Logger.Warn(args...)
+}
+
+func (l *LogrusNestedLogger) Error(args ...interface{}) {
+	l.Logger.Error(args...)
 }