net/proxy/mojo_proxy_resolver_factory_impl.cc

   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 #include "net/proxy/mojo_proxy_resolver_factory_impl.h"
   6
   7 #include "net/dns/host_resolver_mojo.h"
   8 #include "net/proxy/mojo_proxy_resolver_impl.h"
   9 #include "net/proxy/proxy_resolver_v8.h"
  10 #include "net/proxy/proxy_resolver_v8_tracing.h"
  11 #include "third_party/mojo/src/mojo/public/cpp/bindings/error_handler.h"
  12
  13 namespace net {
  14 namespace {
  15
  16 scoped_ptr<ProxyResolver> CreateDefaultProxyResolver(
  17     HostResolver* host_resolver) {
  18   return make_scoped_ptr(
  19       new ProxyResolverV8Tracing(host_resolver, nullptr, nullptr));
  20 }
  21
  22 // A class to manage the lifetime of a MojoProxyResolverImpl and a
  23 // HostResolverMojo. An instance will remain while the message pipes for both
  24 // mojo connections remain open.
  25 class MojoProxyResolverHolder : public mojo::ErrorHandler {
  26  public:
  27   MojoProxyResolverHolder(
  28       const MojoProxyResolverFactoryImpl::Factory& proxy_resolver_factory,
  29       mojo::InterfaceRequest<interfaces::ProxyResolver> request,
  30       interfaces::HostResolverPtr host_resolver);
  31
  32  private:
  33   // mojo::ErrorHandler override.
  34   void OnConnectionError() override;
  35
  36   HostResolverMojo host_resolver_;
  37   MojoProxyResolverImpl proxy_resolver_;
  38   mojo::Binding<interfaces::ProxyResolver> binding_;
  39
  40   DISALLOW_COPY_AND_ASSIGN(MojoProxyResolverHolder);
  41 };
  42
  43 MojoProxyResolverHolder::MojoProxyResolverHolder(
  44     const MojoProxyResolverFactoryImpl::Factory& proxy_resolver_factory,
  45     mojo::InterfaceRequest<interfaces::ProxyResolver> request,
  46     interfaces::HostResolverPtr host_resolver)
  47     : host_resolver_(host_resolver.Pass(),
  48                      base::Bind(&MojoProxyResolverHolder::OnConnectionError,
  49                                 base::Unretained(this))),
  50       proxy_resolver_(proxy_resolver_factory.Run(&host_resolver_)),
  51       binding_(&proxy_resolver_, request.Pass()) {
  52   binding_.set_error_handler(this);
  53 }
  54
  55 void MojoProxyResolverHolder::OnConnectionError() {
  56   delete this;
  57 }
  58
  59 }  // namespace
  60
  61 MojoProxyResolverFactoryImpl::MojoProxyResolverFactoryImpl(
  62     const MojoProxyResolverFactoryImpl::Factory& proxy_resolver_factory,
  63     mojo::InterfaceRequest<interfaces::ProxyResolverFactory> request)
  64     : proxy_resolver_impl_factory_(proxy_resolver_factory),
  65       binding_(this, request.Pass()) {
  66 }
  67
  68 MojoProxyResolverFactoryImpl::MojoProxyResolverFactoryImpl(
  69     mojo::InterfaceRequest<interfaces::ProxyResolverFactory> request)
  70     : MojoProxyResolverFactoryImpl(base::Bind(&CreateDefaultProxyResolver),
  71                                    request.Pass()) {
  72 }
  73
  74 MojoProxyResolverFactoryImpl::~MojoProxyResolverFactoryImpl() = default;
  75
  76 void MojoProxyResolverFactoryImpl::CreateResolver(
  77     mojo::InterfaceRequest<interfaces::ProxyResolver> request,
  78     interfaces::HostResolverPtr host_resolver) {
  79   // The MojoProxyResolverHolder will delete itself when either |request| or
  80   // |host_resolver| encounters a connection error, that is, when either the
  81   // ProxyResolver client or the HostResolver implementation is deleted.
  82   new MojoProxyResolverHolder(proxy_resolver_impl_factory_, request.Pass(),
  83                               host_resolver.Pass());
  84 }
  85
  86 }  // namespace net