[Cronet] Define CronetMetrics class implementing the iOS...

[Cronet] Define CronetMetrics class implementing the iOS NSURLSessionTaskTransactionMetrics interface

This creates a class |CronetMetrics| which provides setters for all of the propeties defined in
NSURLSessionTaskTransactionMetrics.

Bug: 702796
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: Icdcc917001c0ceb20107e2f128dba88259330f78
Reviewed-on: https://chromium-review.googlesource.com/744401
Commit-Queue: Lily Houghton <lilyhoughton@chromium.org>
Reviewed-by: Misha Efimov <mef@chromium.org>
Cr-Commit-Position: refs/heads/master@{#515444}

components/cronet/ios/BUILD.gn

@@ -79,6 +79,8 @@ _cronet_sources = [
   "Cronet.mm",
   "cronet_environment.h",
   "cronet_environment.mm",
+  "cronet_metrics.h",
+  "cronet_metrics.mm",
 ]
 
 _cronet_public_headers = [ "Cronet.h" ]

components/cronet/ios/cronet_metrics.h

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_CRONET_IOS_CRONET_METRICS_H_
+#define COMPONENTS_CRONET_IOS_CRONET_METRICS_H_
+
+#import <Foundation/Foundation.h>
+
+#include "components/grpc_support/include/bidirectional_stream_c.h"
+
+FOUNDATION_EXPORT GRPC_SUPPORT_EXPORT NS_AVAILABLE_IOS(10.0)
+@interface CronetMetrics : NSURLSessionTaskTransactionMetrics
+
+@property(copy, readwrite) NSURLRequest* request;
+@property(copy, readwrite) NSURLResponse* response;
+
+@property(copy, readwrite) NSDate* fetchStartDate;
+@property(copy, readwrite) NSDate* domainLookupStartDate;
+@property(copy, readwrite) NSDate* domainLookupEndDate;
+@property(copy, readwrite) NSDate* connectStartDate;
+@property(copy, readwrite) NSDate* secureConnectionStartDate;
+@property(copy, readwrite) NSDate* secureConnectionEndDate;
+@property(copy, readwrite) NSDate* connectEndDate;
+@property(copy, readwrite) NSDate* requestStartDate;
+@property(copy, readwrite) NSDate* requestEndDate;
+@property(copy, readwrite) NSDate* responseStartDate;
+@property(copy, readwrite) NSDate* responseEndDate;
+
+@property(copy, readwrite) NSString* networkProtocolName;
+@property(assign, readwrite, getter=isProxyConnection) BOOL proxyConnection;
+@property(assign, readwrite, getter=isReusedConnection) BOOL reusedConnection;
+@property(assign, readwrite)
+    NSURLSessionTaskMetricsResourceFetchType resourceFetchType;
+
+@end
+
+#endif // COMPONENTS_CRONET_IOS_CRONET_METRICS_H_

components/cronet/ios/cronet_metrics.mm

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "components/cronet/ios/cronet_metrics.h"
+
+@implementation CronetMetrics
+
+@synthesize request = _request;
+@synthesize response = _response;
+
+@synthesize fetchStartDate = _fetchStartDate;
+@synthesize domainLookupStartDate = _domainLookupStartDate;
+@synthesize domainLookupEndDate = _domainLookupEndDate;
+@synthesize connectStartDate = _connectStartDate;
+@synthesize secureConnectionStartDate = _secureConnectionStartDate;
+@synthesize secureConnectionEndDate = _secureConnectionEndDate;
+@synthesize connectEndDate = _connectEndDate;
+@synthesize requestStartDate = _requestStartDate;
+@synthesize requestEndDate = _requestEndDate;
+@synthesize responseStartDate = _responseStartDate;
+@synthesize responseEndDate = _responseEndDate;
+
+@synthesize networkProtocolName = _networkProtocolName;
+@synthesize proxyConnection = _proxyConnection;
+@synthesize reusedConnection = _reusedConnection;
+@synthesize resourceFetchType = _resourceFetchType;
+
+@end

components/cronet/ios/test/BUILD.gn

@@ -8,8 +8,10 @@ import("//testing/test.gni")
 test("cronet_test") {
   testonly = true
   sources = [
+    "../cronet_metrics.h", # used for unit testing of private interface
     "cronet_acceptlang_test.mm",
     "cronet_http_test.mm",
+    "cronet_metrics_test.mm",
     "cronet_netlog_test.mm",
     "cronet_performance_test.mm",
     "cronet_pkp_test.mm",

components/cronet/ios/test/cronet_metrics_test.mm

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import <Cronet/Cronet.h>
+
+#include "components/cronet/ios/cronet_metrics.h"
+#include "components/cronet/ios/test/cronet_test_base.h"
+#include "testing/gtest_mac.h"
+
+namespace cronet {
+
+class CronetMetricsTest : public CronetTestBase {
+};
+
+TEST_F(CronetMetricsTest, Setters) {
+  if (@available(iOS 10, *)) {
+    CronetMetrics* cronet_metrics = [[CronetMetrics alloc] init];
+
+    NSDate* test_date = [NSDate date];
+    NSURLRequest* test_req = [NSURLRequest
+        requestWithURL:[NSURL URLWithString:@"test.example.com"]];
+    NSURLResponse* test_resp = [[NSURLResponse alloc]
+                  initWithURL:[NSURL URLWithString:@"test.example.com"]
+                     MIMEType:@"text/plain"
+        expectedContentLength:128
+             textEncodingName:@"ascii"];
+
+    [cronet_metrics setRequest:test_req];
+    [cronet_metrics setResponse:test_resp];
+
+    [cronet_metrics setFetchStartDate:test_date];
+    [cronet_metrics setDomainLookupStartDate:test_date];
+    [cronet_metrics setDomainLookupEndDate:test_date];
+    [cronet_metrics setConnectStartDate:test_date];
+    [cronet_metrics setSecureConnectionStartDate:test_date];
+    [cronet_metrics setSecureConnectionEndDate:test_date];
+    [cronet_metrics setConnectEndDate:test_date];
+    [cronet_metrics setRequestStartDate:test_date];
+    [cronet_metrics setRequestEndDate:test_date];
+    [cronet_metrics setResponseStartDate:test_date];
+    [cronet_metrics setResponseEndDate:test_date];
+
+    [cronet_metrics setNetworkProtocolName:@"http/2"];
+    [cronet_metrics setProxyConnection:YES];
+    [cronet_metrics setReusedConnection:YES];
+    [cronet_metrics setResourceFetchType:
+                        NSURLSessionTaskMetricsResourceFetchTypeNetworkLoad];
+
+    NSURLSessionTaskTransactionMetrics* metrics = cronet_metrics;
+
+    EXPECT_EQ([metrics request], test_req);
+    EXPECT_EQ([metrics response], test_resp);
+
+    EXPECT_EQ([metrics fetchStartDate], test_date);
+    EXPECT_EQ([metrics domainLookupStartDate], test_date);
+    EXPECT_EQ([metrics domainLookupEndDate], test_date);
+    EXPECT_EQ([metrics connectStartDate], test_date);
+    EXPECT_EQ([metrics secureConnectionStartDate], test_date);
+    EXPECT_EQ([metrics secureConnectionEndDate], test_date);
+    EXPECT_EQ([metrics connectEndDate], test_date);
+    EXPECT_EQ([metrics requestStartDate], test_date);
+    EXPECT_EQ([metrics requestEndDate], test_date);
+    EXPECT_EQ([metrics responseStartDate], test_date);
+    EXPECT_EQ([metrics responseEndDate], test_date);
+
+    EXPECT_EQ([metrics networkProtocolName], @"http/2");
+    EXPECT_EQ([metrics isProxyConnection], YES);
+    EXPECT_EQ([metrics isReusedConnection], YES);
+    EXPECT_EQ([metrics resourceFetchType],
+              NSURLSessionTaskMetricsResourceFetchTypeNetworkLoad);
+  }
+}
+
+}  // namespace cronet