Initial checkin of gRPC to third_party/

third_party/grpc/src/objective-c/examples/SwiftSample/ViewController.swift

+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+import UIKit
+
+class ViewController: UIViewController {
+
+  override func viewDidLoad() {
+    super.viewDidLoad()
+
+    let RemoteHost = "grpc-test.sandbox.googleapis.com"
+
+    let request = RMTSimpleRequest()
+    request.responseSize = 10
+    request.fillUsername = true
+    request.fillOauthScope = true
+
+
+    // Example gRPC call using a generated proto client library:
+
+    let service = RMTTestService(host: RemoteHost)
+    service.unaryCallWithRequest(request) { response, error in
+      if let response = response {
+        NSLog("1. Finished successfully with response:\n\(response)")
+      } else {
+        NSLog("1. Finished with error: \(error!)")
+      }
+    }
+
+
+    // Same but manipulating headers:
+
+    var RPC : ProtoRPC! // Needed to convince Swift to capture by reference (__block)
+    RPC = service.RPCToUnaryCallWithRequest(request) { response, error in
+      if let response = response {
+        NSLog("2. Finished successfully with response:\n\(response)")
+      } else {
+        NSLog("2. Finished with error: \(error!)")
+      }
+      NSLog("2. Response headers: \(RPC.responseHeaders)")
+      NSLog("2. Response trailers: \(RPC.responseTrailers)")
+    }
+
+    RPC.requestHeaders["My-Header"] = "My value"
+
+    RPC.start()
+
+
+    // Same example call using the generic gRPC client library:
+
+    let method = ProtoMethod(package: "grpc.testing", service: "TestService", method: "UnaryCall")
+
+    let requestsWriter = GRXWriter(value: request.data())
+
+    let call = GRPCCall(host: RemoteHost, path: method.HTTPPath, requestsWriter: requestsWriter)
+
+    call.requestHeaders["My-Header"] = "My value"
+
+    call.startWithWriteable(GRXWriteable { response, error in
+      if let response = response as? NSData {
+        NSLog("3. Received response:\n\(RMTSimpleResponse(data: response, error: nil))")
+      } else {
+        NSLog("3. Finished with error: \(error!)")
+      }
+      NSLog("3. Response headers: \(call.responseHeaders)")
+      NSLog("3. Response trailers: \(call.responseTrailers)")
+    })
+  }
+}