[MM-37664] Remove deprecated Backend field from plugin manifest (#18064)

model/manifest.go

@@ -176,9 +176,6 @@ type Manifest struct {
 	// Server defines the server-side portion of your plugin.
 	Server *ManifestServer `json:"server,omitempty" yaml:"server,omitempty"`
 
-	// Backend is a deprecated flag for defining the server-side portion of your plugin. Going forward, use Server instead.
-	Backend *ManifestServer `json:"backend,omitempty" yaml:"backend,omitempty"`
-
 	// If your plugin extends the web app, you'll need to define webapp.
 	Webapp *ManifestWebapp `json:"webapp,omitempty" yaml:"webapp,omitempty"`
 
@@ -278,11 +275,6 @@ func (m *Manifest) ClientManifest() *Manifest {
 func (m *Manifest) GetExecutableForRuntime(goOs, goArch string) string {
 	server := m.Server
 
-	// Support the deprecated backend parameter.
-	if server == nil {
-		server = m.Backend
-	}
-
 	if server == nil {
 		return ""
 	}
@@ -301,7 +293,7 @@ func (m *Manifest) GetExecutableForRuntime(goOs, goArch string) string {
 }
 
 func (m *Manifest) HasServer() bool {
-	return m.Server != nil || m.Backend != nil
+	return m.Server != nil
 }
 
 func (m *Manifest) HasWebapp() bool {

model/manifest_test.go

@@ -707,44 +707,6 @@ func TestManifestGetExecutableForRuntime(t *testing.T) {
 			"amd64",
 			"path/to/executable",
 		},
-		{
-			"deprecated backend field, ignored since server present",
-			&Manifest{
-				Server: &ManifestServer{
-					Executables: map[string]string{
-						"linux-amd64":   "linux-amd64/path/to/executable",
-						"darwin-amd64":  "darwin-amd64/path/to/executable",
-						"windows-amd64": "windows-amd64/path/to/executable",
-						"linux-arm64":   "linux-arm64/path/to/executable",
-					},
-				},
-				Backend: &ManifestServer{
-					Executables: map[string]string{
-						"linux-amd64":   "linux-amd64/path/to/executable",
-						"darwin-amd64":  "darwin-amd64/path/to/executable",
-						"windows-amd64": "windows-amd64/path/to/executable",
-					},
-				},
-			},
-			"linux",
-			"amd64",
-			"linux-amd64/path/to/executable",
-		},
-		{
-			"deprecated backend field used, since no server present",
-			&Manifest{
-				Backend: &ManifestServer{
-					Executables: map[string]string{
-						"linux-amd64":   "linux-amd64/path/to/executable",
-						"darwin-amd64":  "darwin-amd64/path/to/executable",
-						"windows-amd64": "windows-amd64/path/to/executable",
-					},
-				},
-			},
-			"linux",
-			"amd64",
-			"linux-amd64/path/to/executable",
-		},
 	}
 
 	for _, testCase := range testCases {
@@ -798,28 +760,6 @@ func TestManifestHasServer(t *testing.T) {
 			},
 			true,
 		},
-		{
-			"single executable defined via deprecated backend",
-			&Manifest{
-				Backend: &ManifestServer{
-					Executable: "path/to/executable",
-				},
-			},
-			true,
-		},
-		{
-			"multiple executables defined via deprecated backend",
-			&Manifest{
-				Backend: &ManifestServer{
-					Executables: map[string]string{
-						"linux-amd64":   "linux-amd64/path/to/executable",
-						"darwin-amd64":  "darwin-amd64/path/to/executable",
-						"windows-amd64": "windows-amd64/path/to/executable",
-					},
-				},
-			},
-			true,
-		},
 	}
 
 	for _, testCase := range testCases {