#pragma once

namespace Envoy {

namespace Http {

// Interface for an idle session that can be terminated due to overload.

class IdleSessionInterface {

public:

  // Terminates the idle session. This is called by the SessionIdleList when

  // the system is overloaded and the session is eligible for termination.

  virtual void TerminateIdleSession() = 0;

};

// Interface for managing a list of idle sessions.

class SessionIdleListInterface {

public:

  // Adds a session to the idle list.

  virtual void AddSession(IdleSessionInterface& session) = 0;

  // Removes a session from the idle list.

  virtual void RemoveSession(IdleSessionInterface& session) = 0;

  // Terminates idle sessions if they are eligible for termination. This is

  // called by the worker thread when the system is overloaded.

  virtual void MaybeTerminateIdleSessions(bool is_saturated) = 0;

};

} // namespace Http

} // namespace Envoy