net/dns/host_resolver_mojo.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 NET_DNS_HOST_RESOLVER_MOJO_H_
   6 #define NET_DNS_HOST_RESOLVER_MOJO_H_
   7
   8 #include "base/callback.h"
   9 #include "base/threading/thread_checker.h"
  10 #include "net/dns/host_resolver.h"
  11 #include "net/interfaces/host_resolver_service.mojom.h"
  12 #include "third_party/mojo/src/mojo/public/cpp/bindings/error_handler.h"
  13
  14 namespace net {
  15 class AddressList;
  16 class BoundNetLog;
  17
  18 // A HostResolver implementation that delegates to an interfaces::HostResolver
  19 // mojo interface.
  20 class HostResolverMojo : public HostResolver, public mojo::ErrorHandler {
  21  public:
  22   HostResolverMojo(interfaces::HostResolverPtr resolver,
  23                    const base::Closure& disconnect_callback);
  24   ~HostResolverMojo() override;
  25
  26   // HostResolver overrides.
  27   int Resolve(const RequestInfo& info,
  28               RequestPriority priority,
  29               AddressList* addresses,
  30               const CompletionCallback& callback,
  31               RequestHandle* request_handle,
  32               const BoundNetLog& source_net_log) override;
  33   int ResolveFromCache(const RequestInfo& info,
  34                        AddressList* addresses,
  35                        const BoundNetLog& source_net_log) override;
  36   void CancelRequest(RequestHandle req) override;
  37
  38  private:
  39   class Job;
  40
  41   // mojo::ErrorHandler override.
  42   void OnConnectionError() override;
  43
  44   interfaces::HostResolverPtr resolver_;
  45
  46   const base::Closure disconnect_callback_;
  47
  48   base::ThreadChecker thread_checker_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(HostResolverMojo);
  51 };
  52
  53 }  // namespace net
  54
  55 #endif  // NET_DNS_HOST_RESOLVER_MOJO_H_