Add http-wasm plugin support to Traefik

pkg/plugins/types.go

@@ -1,5 +1,15 @@
 package plugins
 
+const (
+	runtimeYaegi = "yaegi"
+	runtimeWasm  = "wasm"
+)
+
+const (
+	typeMiddleware = "middleware"
+	typeProvider   = "provider"
+)
+
 // Descriptor The static part of a plugin configuration.
 type Descriptor struct {
 	// ModuleName (required)
@@ -19,9 +29,17 @@ type LocalDescriptor struct {
 type Manifest struct {
 	DisplayName   string                 `yaml:"displayName"`
 	Type          string                 `yaml:"type"`
+	Runtime       string                 `yaml:"runtime"`
+	WasmPath      string                 `yaml:"wasmPath"`
 	Import        string                 `yaml:"import"`
 	BasePkg       string                 `yaml:"basePkg"`
 	Compatibility string                 `yaml:"compatibility"`
 	Summary       string                 `yaml:"summary"`
 	TestData      map[string]interface{} `yaml:"testData"`
 }
+
+// IsYaegiPlugin returns true if the plugin is a Yaegi plugin.
+func (m *Manifest) IsYaegiPlugin() bool {
+	// defaults always Yaegi to have backwards compatibility to plugins without runtime
+	return m.Runtime == runtimeYaegi || m.Runtime == ""
+}