Upgraded swift implementation for grpc (#5843)

Updated version number

grpc/src/compiler/swift_generator.cc

@@ -108,13 +108,13 @@ void GenerateClientClass(const grpc_generator::Service *service,
   printer->Print(vars,
                  "$ACCESS$ final class $ServiceName$ServiceClient: GRPCClient, "
                  "$ServiceName$Service {\n");
-  printer->Print(vars, "\t$ACCESS$ let connection: ClientConnection\n");
+  printer->Print(vars, "\t$ACCESS$ let channel: GRPCChannel\n");
   printer->Print(vars, "\t$ACCESS$ var defaultCallOptions: CallOptions\n");
   printer->Print("\n");
   printer->Print(vars,
-                 "\t$ACCESS$ init(connection: ClientConnection, "
+                 "\t$ACCESS$ init(channel: GRPCChannel, "
                  "defaultCallOptions: CallOptions = CallOptions()) {\n");
-  printer->Print("\t\tself.connection = connection\n");
+  printer->Print("\t\tself.channel = channel\n");
   printer->Print("\t\tself.defaultCallOptions = defaultCallOptions\n");
   printer->Print("\t}");
   printer->Print("\n");

swift/FlatBuffers.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'FlatBuffers'
-  s.version          = '0.2.0'
+  s.version          = '0.3.0'
   s.summary          = 'FlatBuffers: Memory Efficient Serialization Library'
 
   s.description      = "FlatBuffers is a cross platform serialization library architected for

tests/FlatBuffers.GRPC.Swift/Package.swift

@@ -12,7 +12,7 @@ let package = Package(
     dependencies: [
         // Main SwiftNIO package
         .package(path: "../../swift"),
-        .package(url: "https://github.com/grpc/grpc-swift.git", .branch("nio"))
+        .package(url: "https://github.com/grpc/grpc-swift.git", from: "1.0.0-alpha.9")
     ],
     targets: [
         // Targets are the basic building blocks of a package. A target can define a module or a test suite.

tests/FlatBuffers.GRPC.Swift/Sources/Model/greeter.grpc.swift

@@ -26,11 +26,11 @@ public protocol GreeterService {
 }
 
 public final class GreeterServiceClient: GRPCClient, GreeterService {
-	public let connection: ClientConnection
+	public let channel: GRPCChannel
 	public var defaultCallOptions: CallOptions
 
-	public init(connection: ClientConnection, defaultCallOptions: CallOptions = CallOptions()) {
-		self.connection = connection
+	public init(channel: GRPCChannel, defaultCallOptions: CallOptions = CallOptions()) {
+		self.channel = channel
 		self.defaultCallOptions = defaultCallOptions
 	}
 

tests/FlatBuffers.GRPC.Swift/Sources/client/main.swift

@@ -31,7 +31,7 @@ func greet(name: String, client greeter: GreeterServiceClient) {
     // Form the request with the name, if one was provided.
     var builder = FlatBufferBuilder()
     let name = builder.create(string: name)
-    let root = HelloRequest.createHelloRequest(builder, offsetOfName: name)
+    let root = HelloRequest.createHelloRequest(&builder, offsetOfName: name)
     builder.finish(offset: root)
     
     // Make the RPC call to the server.
@@ -45,7 +45,7 @@ func greet(name: String, client greeter: GreeterServiceClient) {
     }
     
     let surname = builder.create(string: "Name")
-    let manyRoot = ManyHellosRequest.createManyHellosRequest(builder, offsetOfName: surname, numGreetings: 2)
+    let manyRoot = ManyHellosRequest.createManyHellosRequest(&builder, offsetOfName: surname, numGreetings: 2)
     builder.finish(offset: manyRoot)
     
     let call = greeter.SayManyHellos(Message(builder: &builder)) { message in
@@ -80,21 +80,15 @@ func main(args: [String]) {
             try! group.syncShutdownGracefully()
         }
         
-        // Provide some basic configuration for the connection, in this case we connect to an endpoint on
-        // localhost at the given port.
-        let configuration = ClientConnection.Configuration(
-            target: .hostAndPort("localhost", port),
-            eventLoopGroup: group
-        )
-        
-        // Create a connection using the configuration.
-        let connection = ClientConnection(configuration: configuration)
+        // Configure the channel, we're not using TLS so the connection is `insecure`.
+        let channel = ClientConnection.insecure(group: group)
+          .connect(host: "localhost", port: port)
         
         // Provide the connection to the generated client.
-        let greeter = GreeterServiceClient(connection: connection)
+        let greeter = GreeterServiceClient(channel: channel)
         
         // Do the greeting.
-        greet(name: "Hello FlatBuffers!", client: greeter)
+        greet(name: name ?? "Hello FlatBuffers!", client: greeter)
     }
 }
 

tests/FlatBuffers.GRPC.Swift/Sources/server/main.swift

@@ -29,7 +29,7 @@ class Greeter: GreeterProvider {
         for name in names {
             var builder = FlatBufferBuilder()
             let off = builder.create(string: name)
-            let root = HelloReply.createHelloReply(builder, offsetOfMessage: off)
+            let root = HelloReply.createHelloReply(&builder, offsetOfMessage: off)
             builder.finish(offset: root)
             hellos.append(Message(builder: &builder))
         }
@@ -43,7 +43,7 @@ class Greeter: GreeterProvider {
         
         var builder = FlatBufferBuilder()
         let off = builder.create(string: recipient)
-        let root = HelloReply.createHelloReply(builder, offsetOfMessage: off)
+        let root = HelloReply.createHelloReply(&builder, offsetOfMessage: off)
         builder.finish(offset: root)
         return context.eventLoop.makeSucceededFuture(Message<HelloReply>(builder: &builder))
     }

tests/monster_test.grpc.swift

@@ -28,11 +28,11 @@ public protocol MonsterStorageService {
 }
 
 public final class MonsterStorageServiceClient: GRPCClient, MonsterStorageService {
-	public let connection: ClientConnection
+	public let channel: GRPCChannel
 	public var defaultCallOptions: CallOptions
 
-	public init(connection: ClientConnection, defaultCallOptions: CallOptions = CallOptions()) {
-		self.connection = connection
+	public init(channel: GRPCChannel, defaultCallOptions: CallOptions = CallOptions()) {
+		self.channel = channel
 		self.defaultCallOptions = defaultCallOptions
 	}