Bump updated federation version to v2.6 (#8710)

* Bump updated federation version to v2.6

* Upgrade version

* Restore grpc

* Fix E2E

Author: ardatan

.changeset/major-rooms-cross.md

@@ -0,0 +1,5 @@
+---
+'@graphql-mesh/fusion-composition': patch
+---
+
+Use the latest compatible federation version v2.6 not v2.3 when upgrading the existing import

e2e/petstore-subgraph/__snapshots__/petstore-subgraph.test.ts.snap

@@ -1,7 +1,7 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
 exports[`should generate the subgraph schema correctly 1`] = `
-"schema @link(url: "https://specs.apollo.dev/link/v1.0") @link(url: "https://specs.apollo.dev/federation/v2.3", import: ["@key", "@provides", "@requires", "@external", "@inaccessible", "@shareable", "@extends", "@tag", "@composeDirective"]) @link(url: "https://the-guild.dev/graphql/mesh/spec/v1.0", import: ["@enum", "@httpOperation", "@transport", "@merge", "@extraSchemaDefinitionDirective"]) @composeDirective(name: "@enum") @composeDirective(name: "@httpOperation") @composeDirective(name: "@transport") @composeDirective(name: "@merge") @composeDirective(name: "@extraSchemaDefinitionDirective") {
+"schema @link(url: "https://specs.apollo.dev/link/v1.0") @link(url: "https://specs.apollo.dev/federation/v2.6", import: ["@key", "@provides", "@requires", "@external", "@inaccessible", "@shareable", "@extends", "@tag", "@composeDirective"]) @link(url: "https://the-guild.dev/graphql/mesh/spec/v1.0", import: ["@enum", "@httpOperation", "@transport", "@merge", "@extraSchemaDefinitionDirective"]) @composeDirective(name: "@enum") @composeDirective(name: "@httpOperation") @composeDirective(name: "@transport") @composeDirective(name: "@merge") @composeDirective(name: "@extraSchemaDefinitionDirective") {
   query: Query
   mutation: Mutation
 }

examples/v1-next/hive-example/my-rest/typeDefs.graphql

@@ -1,7 +1,7 @@
 schema
   @link(url: "https://specs.apollo.dev/link/v1.0")
   @link(
-    url: "https://specs.apollo.dev/federation/v2.3"
+    url: "https://specs.apollo.dev/federation/v2.6"
     import: [
       "@key"
       "@provides"

packages/fusion/composition/src/federation-utils.ts

@@ -19,7 +19,7 @@ export function addFederation2DirectivesToSubgraph(subgraph: GraphQLSchema) {
     )
   ) {
     linkDirectives.push({
-      url: 'https://specs.apollo.dev/federation/v2.3',
+      url: 'https://specs.apollo.dev/federation/v2.6',
       import: [],
     });
   }
@@ -42,8 +42,14 @@ export function importFederationDirectives(subgraph: GraphQLSchema, directives:
     linkDirectives.push(importStatement);
   }
   // v2.0 is not supported so bump to v2.6
-  if (importStatement.url === 'https://specs.apollo.dev/federation/v2.0') {
-    importStatement.url = 'https://specs.apollo.dev/federation/v2.6';
+  const match = importStatement.url.match(/\/v(\d+)\.(\d+)(?:$|\/)/);
+  if (match) {
+    const major = Number(match[1]);
+    const minor = Number(match[2]);
+    // Bump only older 2.x (2.0–2.5) to v2.6, leave >=2.6 as-is
+    if (major === 2 && minor < 6) {
+      importStatement.url = 'https://specs.apollo.dev/federation/v2.6';
+    }
   }
   importStatement.import = [...new Set([...(importStatement.import || []), ...directives])];
   const extensions: Record<string, unknown> = (subgraph.extensions ||= {});

packages/fusion/composition/tests/__snapshots__/reproduction.spec.ts.snap

@@ -39,7 +39,7 @@ exports[`Reproductions GW-164 1`] = `
                     },
                     "value": {
                       "kind": "StringValue",
-                      "value": "https://specs.apollo.dev/federation/v2.3",
+                      "value": "https://specs.apollo.dev/federation/v2.6",
                     },
                   },
                   {