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// Copyright 2014 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 COMPONENTS_CAST_CHANNEL_LOGGER_H_
#define COMPONENTS_CAST_CHANNEL_LOGGER_H_
#include <stddef.h>
#include <map>
#include <memory>
#include <string>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/threading/thread_checker.h"
#include "components/cast_channel/cast_channel_enum.h"
namespace cast_channel {
struct AuthResult;
// Holds the most recent error encountered by a CastSocket.
struct LastError {
public:
LastError();
~LastError();
// The most recent event that occurred at the time of the error.
ChannelEvent channel_event;
// The most recent ChallengeReplyError logged for the socket.
// NOTE(mfoltz): AuthResult::ErrorType is zero-indexed and ChallengeReplyError
// is one-indexed, so we can't use AuthResult::ErrorType here.
ChallengeReplyError challenge_reply_error;
// The most recent net_return_value logged for the socket.
int net_return_value;
};
// Called with events that occur on a Cast Channel and remembers any that
// warrant reporting to the caller in LastError.
class Logger : public base::RefCountedThreadSafe<Logger> {
public:
Logger();
// For events that involves socket / crypto operations that returns a value.
void LogSocketEventWithRv(int channel_id, ChannelEvent channel_event, int rv);
// For AUTH_CHALLENGE_REPLY event.
void LogSocketChallengeReplyEvent(int channel_id,
const AuthResult& auth_result);
// Returns the last errors logged for |channel_id|.
LastError GetLastError(int channel_id) const;
// Removes a LastError entry for |channel_id| if one exists.
void ClearLastError(int channel_id);
private:
friend class base::RefCountedThreadSafe<Logger>;
~Logger();
// Propagate any error values in |rv| or |challenge_reply_error| to the
// LastError for |channel_id|.
void MaybeSetLastError(int channel_id,
ChannelEvent channel_event,
int rv,
ChallengeReplyError challenge_reply_error);
// Maps channel_id to the LastError for the channel.
std::map<int, LastError> last_errors_;
THREAD_CHECKER(thread_checker_);
DISALLOW_COPY_AND_ASSIGN(Logger);
};
} // namespace cast_channel
#endif // COMPONENTS_CAST_CHANNEL_LOGGER_H_
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