add federation 2.7 and 2.8 support

examples/src/main/resources/gateway_v2/package.json

@@ -10,8 +10,8 @@
   "keywords": [],
   "license": "MIT",
   "dependencies": {
-    "@apollo/server": "4.9.5",
-    "@apollo/gateway": "2.6.2",
+    "@apollo/gateway": "2.8.0",
+    "@apollo/server": "4.10.4",
     "graphql": "16.8.1"
   }
 }

federation/src/main/scala/caliban/federation/package.scala

@@ -4,6 +4,7 @@ import caliban.federation.v2x.{
   FederationDirectivesV2_3,
   FederationDirectivesV2_5,
   FederationDirectivesV2_6,
+  FederationDirectivesV2_8,
   FederationV2,
   Versions
 }
@@ -17,5 +18,7 @@ package object federation {
   lazy val v2_4 = new FederationV2(List(Versions.v2_4)) with FederationDirectivesV2_3
   lazy val v2_5 = new FederationV2(List(Versions.v2_5)) with FederationDirectivesV2_5
   lazy val v2_6 = new FederationV2(List(Versions.v2_6)) with FederationDirectivesV2_6
+  lazy val v2_7 = new FederationV2(List(Versions.v2_7)) with FederationDirectivesV2_6
+  lazy val v2_8 = new FederationV2(List(Versions.v2_8)) with FederationDirectivesV2_8
 
 }

federation/src/main/scala/caliban/federation/v2x/FederationDirectivesV2_8.scala

@@ -0,0 +1,16 @@
+package caliban.federation.v2x
+
+import caliban.Value.StringValue
+import caliban.parsing.adt.Directive
+import caliban.schema.Annotations.GQLDirective
+
+trait FederationDirectivesV2_8 extends FederationDirectivesV2_6 {
+
+  def Context(context: String) = Directive("context", Map("context" -> StringValue(context)))
+
+  case class GQLContext(context: String) extends GQLDirective(Context(context))
+
+  def FromContext(context: String) = Directive("fromContext", Map("context" -> StringValue(context)))
+
+  case class GQLFromContext(context: String) extends GQLDirective(FromContext(context))
+}

federation/src/main/scala/caliban/federation/v2x/FederationV2.scala

@@ -52,4 +52,14 @@ object FederationV2 {
     `import` = v2_5.`import` :+ Import("@policy")
   )
 
+  private[v2x] val v2_7 = Link(
+    url = s"$federationV2Url/v2.7",
+    `import` = v2_6.`import`
+  )
+
+  private[v2x] val v2_8 = Link(
+    url = s"$federationV2Url/v2.8",
+    `import` = v2_7.`import` :+ Import("@context") :+ Import("@fromContext")
+  )
+
 }

federation/src/main/scala/caliban/federation/v2x/Versions.scala

@@ -8,5 +8,7 @@ object Versions {
   val v2_4 = FederationV2.v2_4
   val v2_5 = FederationV2.v2_5
   val v2_6 = FederationV2.v2_6
+  val v2_7 = FederationV2.v2_7
+  val v2_8 = FederationV2.v2_8
 
 }