chrome/browser/net/utility_process_mojo_proxy_resolver_factory.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_NET_UTILITY_PROCESS_MOJO_PROXY_RESOLVER_FACTORY_H_
   6 #define CHROME_BROWSER_NET_UTILITY_PROCESS_MOJO_PROXY_RESOLVER_FACTORY_H_
   7
   8 #include "base/macros.h"
   9 #include "base/memory/weak_ptr.h"
  10 #include "base/threading/thread_checker.h"
  11 #include "base/timer/timer.h"
  12 #include "net/proxy/mojo_proxy_resolver_factory.h"
  13
  14 namespace content {
  15 class UtilityProcessHost;
  16 }
  17 namespace base {
  18 template <typename Type>
  19 struct DefaultSingletonTraits;
  20 }  // namespace base
  21
  22 // A factory used to create connections to Mojo proxy resolver services run in a
  23 // utility process. All Mojo proxy resolver services will be run in the same
  24 // utility process. Utility process crashes are detected and the utility
  25 // process is automatically restarted.
  26 class UtilityProcessMojoProxyResolverFactory
  27     : public net::MojoProxyResolverFactory {
  28  public:
  29   static UtilityProcessMojoProxyResolverFactory* GetInstance();
  30
  31   // Overridden from net::MojoProxyResolverFactory:
  32   scoped_ptr<base::ScopedClosureRunner> CreateResolver(
  33       const mojo::String& pac_script,
  34       mojo::InterfaceRequest<net::interfaces::ProxyResolver> req,
  35       net::interfaces::ProxyResolverFactoryRequestClientPtr client) override;
  36
  37  private:
  38   friend struct base::DefaultSingletonTraits<
  39       UtilityProcessMojoProxyResolverFactory>;
  40   UtilityProcessMojoProxyResolverFactory();
  41   ~UtilityProcessMojoProxyResolverFactory() override;
  42
  43   // Error handler callback for |resolver_factory_|.
  44   void OnConnectionError();
  45
  46   // Invoked each time a proxy resolver is destroyed.
  47   void OnResolverDestroyed();
  48
  49   // Invoked once an idle timeout has elapsed after all proxy resolvers are
  50   // destroyed.
  51   void OnIdleTimeout();
  52
  53   // Creates a new utility process and connects to its Mojo proxy resolver
  54   // factory.
  55   void CreateProcessAndConnect();
  56
  57   net::interfaces::ProxyResolverFactoryPtr resolver_factory_;
  58
  59   base::WeakPtr<content::UtilityProcessHost> weak_utility_process_host_;
  60   size_t num_proxy_resolvers_ = 0;
  61
  62   base::OneShotTimer<UtilityProcessMojoProxyResolverFactory> idle_timer_;
  63
  64   base::ThreadChecker thread_checker_;
  65
  66   DISALLOW_COPY_AND_ASSIGN(UtilityProcessMojoProxyResolverFactory);
  67 };
  68
  69 #endif  // CHROME_BROWSER_NET_UTILITY_PROCESS_MOJO_PROXY_RESOLVER_FACTORY_H_