Better validation

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## 0.9.7: Better validation
+
+This release adds better validation for the metrics server.
+
 ## 0.9.6: Fixed listen default
 
 This release fixes a regression where the default `listen` value would be `0.0.0.0:8080` instead of `0.0.0.0:9100`.

server_config.go

@@ -1,6 +1,8 @@
 package metrics
 
 import (
+	"fmt"
+
 	"github.com/containerssh/http"
 )
 
@@ -10,3 +12,14 @@ type Config struct {
 	Enable bool   `yaml:"enable" json:"enable" comment:"Enable metrics server." default:"false"`
 	Path   string `yaml:"path" json:"path" comment:"Path to run the Metrics endpoint on." default:"/metrics"`
 }
+
+// Validate validates the configuration.
+func (c Config) Validate() error {
+	if !c.Enable {
+		return nil
+	}
+	if c.Path == "" {
+		return fmt.Errorf("metrics path cannot be empty")
+	}
+	return c.ServerConfiguration.Validate()
+}