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// Copyright 2015 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 NET_DNS_HOST_RESOLVER_MOJO_H_
#define NET_DNS_HOST_RESOLVER_MOJO_H_
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/threading/thread_checker.h"
#include "net/dns/host_cache.h"
#include "net/dns/host_resolver.h"
#include "net/interfaces/host_resolver_service.mojom.h"
namespace net {
class AddressList;
class BoundNetLog;
// A HostResolver implementation that converts requests to mojo types and
// forwards them to a mojo Impl interface.
class HostResolverMojo : public HostResolver {
public:
class Impl {
public:
virtual ~Impl() = default;
virtual void ResolveDns(interfaces::HostResolverRequestInfoPtr,
interfaces::HostResolverRequestClientPtr) = 0;
};
// |impl| must outlive |this|.
explicit HostResolverMojo(Impl* impl);
~HostResolverMojo() override;
// HostResolver overrides.
int Resolve(const RequestInfo& info,
RequestPriority priority,
AddressList* addresses,
const CompletionCallback& callback,
RequestHandle* request_handle,
const BoundNetLog& source_net_log) override;
int ResolveFromCache(const RequestInfo& info,
AddressList* addresses,
const BoundNetLog& source_net_log) override;
void CancelRequest(RequestHandle req) override;
HostCache* GetHostCache() override;
private:
class Job;
int ResolveFromCacheInternal(const RequestInfo& info,
const HostCache::Key& key,
AddressList* addresses);
Impl* const impl_;
scoped_ptr<HostCache> host_cache_;
base::WeakPtrFactory<HostCache> host_cache_weak_factory_;
base::ThreadChecker thread_checker_;
DISALLOW_COPY_AND_ASSIGN(HostResolverMojo);
};
} // namespace net
#endif // NET_DNS_HOST_RESOLVER_MOJO_H_
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