[Swift] Moves grpc example to grpc/examples (#6479)

Updates generated Code

Removes grpc generation code from tests dir

Small fix to generate.sh

grpc/examples/swift/Greeter/Sources/Model/greeter.grpc.swift

@@ -0,0 +1,145 @@
+// Generated GRPC code for FlatBuffers swift!
+/// The following code is generated by the Flatbuffers library which might not be in sync with grpc-swift
+/// in case of an issue please open github issue, though it would be maintained
+
+// swiftlint:disable all
+// swiftformat:disable all
+
+import Foundation
+import GRPC
+import NIO
+import NIOHTTP1
+import FlatBuffers
+
+public protocol GRPCFlatBufPayload: GRPCPayload, FlatBufferGRPCMessage {}
+public extension GRPCFlatBufPayload {
+  init(serializedByteBuffer: inout NIO.ByteBuffer) throws {
+    self.init(byteBuffer: FlatBuffers.ByteBuffer(contiguousBytes: serializedByteBuffer.readableBytesView, count: serializedByteBuffer.readableBytes))
+  }
+  func serialize(into buffer: inout NIO.ByteBuffer) throws {
+    let buf = UnsafeRawBufferPointer(start: self.rawPointer, count: Int(self.size))
+    buffer.writeBytes(buf)
+  }
+}
+extension Message: GRPCFlatBufPayload {}
+
+/// Usage: instantiate models_GreeterServiceClient, then call methods of this protocol to make API calls.
+public protocol models_GreeterClientProtocol: GRPCClient {
+
+  var serviceName: String { get }
+
+  var interceptors: models_GreeterClientInterceptorFactoryProtocol? { get }
+
+  func SayHello(
+    _ request: Message<models_HelloRequest>
+    , callOptions: CallOptions?
+  ) -> UnaryCall<Message<models_HelloRequest>, Message<models_HelloReply>>
+
+  func SayManyHellos(
+    _ request: Message<models_HelloRequest>
+    , callOptions: CallOptions?,
+    handler: @escaping (Message<models_HelloReply>) -> Void
+  ) -> ServerStreamingCall<Message<models_HelloRequest>, Message<models_HelloReply>>
+
+}
+
+extension models_GreeterClientProtocol {
+
+  public var serviceName: String { "models.Greeter" }
+
+  public func SayHello(
+    _ request: Message<models_HelloRequest>
+    , callOptions: CallOptions? = nil
+  ) -> UnaryCall<Message<models_HelloRequest>, Message<models_HelloReply>> {
+    return self.makeUnaryCall(
+      path: "/models.Greeter/SayHello",
+      request: request,
+      callOptions: callOptions ?? self.defaultCallOptions,
+      interceptors: self.interceptors?.makeSayHelloInterceptors() ?? []
+    )
+  }
+
+  public func SayManyHellos(
+    _ request: Message<models_HelloRequest>
+    , callOptions: CallOptions? = nil,
+    handler: @escaping (Message<models_HelloReply>) -> Void
+  ) -> ServerStreamingCall<Message<models_HelloRequest>, Message<models_HelloReply>> {
+    return self.makeServerStreamingCall(
+      path: "/models.Greeter/SayManyHellos",
+      request: request,
+      callOptions: callOptions ?? self.defaultCallOptions,
+      interceptors: self.interceptors?.makeSayManyHellosInterceptors() ?? [],
+      handler: handler
+    )
+  }
+}
+
+public protocol models_GreeterClientInterceptorFactoryProtocol {
+  /// - Returns: Interceptors to use when invoking 'SayHello'.
+  func makeSayHelloInterceptors() -> [ClientInterceptor<Message<models_HelloRequest>, Message<models_HelloReply>>]
+
+  /// - Returns: Interceptors to use when invoking 'SayManyHellos'.
+  func makeSayManyHellosInterceptors() -> [ClientInterceptor<Message<models_HelloRequest>, Message<models_HelloReply>>]
+
+}
+
+public final class models_GreeterServiceClient: models_GreeterClientProtocol {
+  public let channel: GRPCChannel
+  public var defaultCallOptions: CallOptions
+  public var interceptors: models_GreeterClientInterceptorFactoryProtocol?
+
+  public init(
+    channel: GRPCChannel,
+    defaultCallOptions: CallOptions = CallOptions(),
+    interceptors: models_GreeterClientInterceptorFactoryProtocol? = nil
+  ) {
+    self.channel = channel
+    self.defaultCallOptions = defaultCallOptions
+    self.interceptors = interceptors
+  }
+}
+
+public protocol models_GreeterProvider: CallHandlerProvider {
+  var interceptors: models_GreeterServerInterceptorFactoryProtocol? { get }
+  func SayHello(request: Message<models_HelloRequest>, context: StatusOnlyCallContext) -> EventLoopFuture<Message<models_HelloReply>>
+  func SayManyHellos(request: Message<models_HelloRequest>, context: StreamingResponseCallContext<Message<models_HelloReply>>) -> EventLoopFuture<GRPCStatus>
+}
+
+public extension models_GreeterProvider {
+
+  var serviceName: Substring { return "models.Greeter" }
+
+  func handle(method name: Substring, context: CallHandlerContext) -> GRPCServerHandlerProtocol? {
+    switch name {
+    case "SayHello":
+    return UnaryServerHandler(
+      context: context,
+      requestDeserializer: GRPCPayloadDeserializer<Message<models_HelloRequest>>(),
+      responseSerializer: GRPCPayloadSerializer<Message<models_HelloReply>>(),
+      interceptors: self.interceptors?.makeSayHelloInterceptors() ?? [],
+      userFunction: self.SayHello(request:context:))
+
+    case "SayManyHellos":
+    return ServerStreamingServerHandler(
+      context: context,
+      requestDeserializer: GRPCPayloadDeserializer<Message<models_HelloRequest>>(),
+      responseSerializer: GRPCPayloadSerializer<Message<models_HelloReply>>(),
+      interceptors: self.interceptors?.makeSayManyHellosInterceptors() ?? [],
+      userFunction: self.SayManyHellos(request:context:))
+
+    default: return nil;
+    }
+  }
+
+}
+
+public protocol models_GreeterServerInterceptorFactoryProtocol {
+  /// - Returns: Interceptors to use when handling 'SayHello'.
+  ///   Defaults to calling `self.makeInterceptors()`.
+  func makeSayHelloInterceptors() -> [ServerInterceptor<Message<models_HelloRequest>, Message<models_HelloReply>>]
+
+  /// - Returns: Interceptors to use when handling 'SayManyHellos'.
+  ///   Defaults to calling `self.makeInterceptors()`.
+  func makeSayManyHellosInterceptors() -> [ServerInterceptor<Message<models_HelloRequest>, Message<models_HelloReply>>]
+
+}

grpc/examples/swift/Greeter/Sources/Model/greeter_generated.swift

@@ -0,0 +1,70 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+// swiftlint:disable all
+// swiftformat:disable all
+
+import FlatBuffers
+
+public struct models_HelloReply: FlatBufferObject {
+
+  static func validateVersion() { FlatBuffersVersion_1_12_0() }
+  public var __buffer: ByteBuffer! { return _accessor.bb }
+  private var _accessor: Table
+
+  public static func getRootAsHelloReply(bb: ByteBuffer) -> models_HelloReply { return models_HelloReply(Table(bb: bb, position: Int32(bb.read(def: UOffset.self, position: bb.reader)) + Int32(bb.reader))) }
+
+  private init(_ t: Table) { _accessor = t }
+  public init(_ bb: ByteBuffer, o: Int32) { _accessor = Table(bb: bb, position: o) }
+
+  private enum VTOFFSET: VOffset {
+    case message = 4
+    var v: Int32 { Int32(self.rawValue) }
+    var p: VOffset { self.rawValue }
+  }
+
+  public var message: String? { let o = _accessor.offset(VTOFFSET.message.v); return o == 0 ? nil : _accessor.string(at: o) }
+  public var messageSegmentArray: [UInt8]? { return _accessor.getVector(at: VTOFFSET.message.v) }
+  public static func startHelloReply(_ fbb: inout FlatBufferBuilder) -> UOffset { fbb.startTable(with: 1) }
+  public static func add(message: Offset<String>, _ fbb: inout FlatBufferBuilder) { fbb.add(offset: message, at: VTOFFSET.message.p) }
+  public static func endHelloReply(_ fbb: inout FlatBufferBuilder, start: UOffset) -> Offset<UOffset> { let end = Offset<UOffset>(offset: fbb.endTable(at: start)); return end }
+  public static func createHelloReply(
+    _ fbb: inout FlatBufferBuilder,
+    messageOffset message: Offset<String> = Offset()
+  ) -> Offset<UOffset> {
+    let __start = models_HelloReply.startHelloReply(&fbb)
+    models_HelloReply.add(message: message, &fbb)
+    return models_HelloReply.endHelloReply(&fbb, start: __start)
+  }
+}
+
+public struct models_HelloRequest: FlatBufferObject {
+
+  static func validateVersion() { FlatBuffersVersion_1_12_0() }
+  public var __buffer: ByteBuffer! { return _accessor.bb }
+  private var _accessor: Table
+
+  public static func getRootAsHelloRequest(bb: ByteBuffer) -> models_HelloRequest { return models_HelloRequest(Table(bb: bb, position: Int32(bb.read(def: UOffset.self, position: bb.reader)) + Int32(bb.reader))) }
+
+  private init(_ t: Table) { _accessor = t }
+  public init(_ bb: ByteBuffer, o: Int32) { _accessor = Table(bb: bb, position: o) }
+
+  private enum VTOFFSET: VOffset {
+    case name = 4
+    var v: Int32 { Int32(self.rawValue) }
+    var p: VOffset { self.rawValue }
+  }
+
+  public var name: String? { let o = _accessor.offset(VTOFFSET.name.v); return o == 0 ? nil : _accessor.string(at: o) }
+  public var nameSegmentArray: [UInt8]? { return _accessor.getVector(at: VTOFFSET.name.v) }
+  public static func startHelloRequest(_ fbb: inout FlatBufferBuilder) -> UOffset { fbb.startTable(with: 1) }
+  public static func add(name: Offset<String>, _ fbb: inout FlatBufferBuilder) { fbb.add(offset: name, at: VTOFFSET.name.p) }
+  public static func endHelloRequest(_ fbb: inout FlatBufferBuilder, start: UOffset) -> Offset<UOffset> { let end = Offset<UOffset>(offset: fbb.endTable(at: start)); return end }
+  public static func createHelloRequest(
+    _ fbb: inout FlatBufferBuilder,
+    nameOffset name: Offset<String> = Offset()
+  ) -> Offset<UOffset> {
+    let __start = models_HelloRequest.startHelloRequest(&fbb)
+    models_HelloRequest.add(name: name, &fbb)
+    return models_HelloRequest.endHelloRequest(&fbb, start: __start)
+  }
+}
+