Display DNS probe results.

chrome/browser/net/dns_probe_service.h

 // Copyright (c) 2012 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 CHROME_BROWSER_NET_DNS_PROBE_SERVICE_H_
 #define CHROME_BROWSER_NET_DNS_PROBE_SERVICE_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
+#include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
 #include "chrome/browser/net/dns_probe_job.h"
 #include "chrome/common/net/net_error_info.h"
-#include "net/base/network_change_notifier.h"
 
 namespace net {
 struct DnsConfig;
 }
 
 namespace chrome_browser_net {
 
-class DnsProbeService : public net::NetworkChangeNotifier::IPAddressObserver {
+class DnsProbeService {
  public:
-  typedef base::Callback<void(chrome_common_net::DnsProbeResult result)>
+  class JobFactory {
+   public:
+    JobFactory() { }
+    virtual ~JobFactory() { }

[mmenke, 2013/05/28 18:20:13]

nit:  Google C++ style guide says not to use a space in empty function bodies.

[Deprecated (see juliatuttle), 2013/06/05 21:01:47]

Done.

+    virtual scoped_ptr<DnsProbeJob> CreateSystemJob(
+        const DnsProbeJob::CallbackType& job_callback) = 0;
+    virtual scoped_ptr<DnsProbeJob> CreatePublicJob(
+        const DnsProbeJob::CallbackType& job_callback) = 0;
+
+   private:
+    DISALLOW_COPY_AND_ASSIGN(JobFactory);
+  };
+
+  typedef base::Callback<void(chrome_common_net::DnsProbeStatus result)>
       CallbackType;
 
-  DnsProbeService();
-  virtual ~DnsProbeService();
+  DnsProbeService() { }
+  virtual ~DnsProbeService() { }

[mmenke, 2013/05/28 18:20:13]

nit:  Google C++ style guide says not to use a space in empty function bodies.

[Deprecated (see juliatuttle), 2013/06/05 21:01:47]

Done.

 
-  void ProbeDns(const CallbackType& callback);
+  static DnsProbeService* CreateDefault();
+  static DnsProbeService* CreateDefaultWithJobFactory(
+      scoped_ptr<JobFactory> job_factory);
 
-  // NetworkChangeNotifier::IPAddressObserver implementation:
-  virtual void OnIPAddressChanged() OVERRIDE;
-
- protected:
-  // This can be called by tests to pretend the cached reuslt has expired.
-  void ExpireResults();
-
- private:
-  enum State {
-    STATE_NO_RESULTS,
-    STATE_PROBE_RUNNING,
-    STATE_RESULTS_CACHED,
-  };
-
-  void StartProbes();
-  void OnProbesComplete();
-  void CallCallbacks();
-
-  void OnProbeJobComplete(DnsProbeJob* job, DnsProbeJob::Result result);
-  chrome_common_net::DnsProbeResult EvaluateResults() const;
-  void HistogramProbes() const;
-
-  // These are expected to be overridden by tests to return mock jobs.
-  virtual scoped_ptr<DnsProbeJob> CreateSystemProbeJob(
-      const DnsProbeJob::CallbackType& job_callback);
-  virtual scoped_ptr<DnsProbeJob> CreatePublicProbeJob(
-      const DnsProbeJob::CallbackType& job_callback);
-
-  scoped_ptr<DnsProbeJob> CreateProbeJob(
-      const net::DnsConfig& dns_config,
-      const DnsProbeJob::CallbackType& job_callback);
-  void GetSystemDnsConfig(net::DnsConfig* config);
-  void GetPublicDnsConfig(net::DnsConfig* config);
-  bool ResultsExpired();
-
-  scoped_ptr<DnsProbeJob> system_job_;
-  scoped_ptr<DnsProbeJob> public_job_;
-  DnsProbeJob::Result system_result_;
-  DnsProbeJob::Result public_result_;
-  std::vector<CallbackType> callbacks_;
-  State state_;
-  chrome_common_net::DnsProbeResult result_;
-  base::Time probe_start_time_;
-  // How many DNS request attempts the probe jobs will make before giving up
-  // (Overrides the attempts field in the system DnsConfig.)
-  const int dns_attempts_;
-  // How many nameservers the system config has.
-  int system_nameserver_count_;
-  // Whether the only system nameserver is 127.0.0.1.
-  bool system_is_localhost_;
+  virtual void ProbeDns(const CallbackType& callback) = 0;
+  virtual void ExpireResultForTesting() { }

[mmenke, 2013/05/28 18:20:13]

nit:  Google C++ style guide says not to use a space in empty function bodies.

[Deprecated (see juliatuttle), 2013/06/05 21:01:47]

Done.

 
   DISALLOW_COPY_AND_ASSIGN(DnsProbeService);
 };
 
 }  // namespace chrome_browser_net
 
 #endif  // CHROME_BROWSER_NET_DNS_PROBE_SERVICE_H_