get log level (#435)

* get log level

Co-authored-by: Marcus Efraimsson <[email protected]>

Author: Scott Lepper

backend/log/log.go

@@ -5,20 +5,37 @@ import (
 	hclog "github.com/hashicorp/go-hclog"
 )
 
+type Level int32
+
+const (
+	NoLevel Level = iota
+	Trace
+	Debug
+	Info
+	Warn
+	Error
+)
+
 // Logger is the main Logger interface.
 type Logger interface {
 	Debug(msg string, args ...interface{})
 	Info(msg string, args ...interface{})
 	Warn(msg string, args ...interface{})
 	Error(msg string, args ...interface{})
+	Level() Level
 }
 
 // New creates a new logger.
 func New() Logger {
+	return NewWithLevel(Debug)
+}
+
+// NewWithLevel creates a new logger at the Level defined.
+func NewWithLevel(level Level) Logger {
 	return &hclogWrapper{
 		logger: hclog.New(&hclog.LoggerOptions{
 			// Use debug as level since anything less severe is suppressed.
-			Level: hclog.Debug,
+			Level: hclog.Level(level),
 			// Use JSON format to make the output in Grafana format and work
 			// when using multiple arguments such as Debug("message", "key", "value").
 			JSONFormat: true,
@@ -46,5 +63,24 @@ func (l *hclogWrapper) Error(msg string, args ...interface{}) {
 	l.logger.Error(msg, args...)
 }
 
+func (l *hclogWrapper) Level() Level {
+	if l.logger.IsDebug() {
+		return Debug
+	}
+	if l.logger.IsTrace() {
+		return Trace
+	}
+	if l.logger.IsInfo() {
+		return Info
+	}
+	if l.logger.IsWarn() {
+		return Warn
+	}
+	if l.logger.IsError() {
+		return Error
+	}
+	return NoLevel
+}
+
 // DefaultLogger is the default logger.
 var DefaultLogger = New()

backend/log/log_test.go

@@ -0,0 +1,20 @@
+package log_test
+
+import (
+	"testing"
+
+	"github.com/grafana/grafana-plugin-sdk-go/backend/log"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestLogLevel(t *testing.T) {
+	logger := log.New()
+	level := logger.Level()
+	assert.Equal(t, level, log.Debug)
+}
+
+func TestLogLevelWarn(t *testing.T) {
+	logger := log.NewWithLevel(log.Warn)
+	level := logger.Level()
+	assert.Equal(t, level, log.Warn)
+}