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// -*- C++ -*-
//=============================================================================
/**
* @file Service_Manager.h
*
* @author Douglas C. Schmidt <d.schmidt@vanderbilt.edu>
*/
//=============================================================================
#ifndef ACE_SERVICE_MANAGER_H
#define ACE_SERVICE_MANAGER_H
#include /**/ "ace/pre.h"
#include "ace/SOCK_Stream.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "ace/SOCK_Acceptor.h"
#include "ace/INET_Addr.h"
#include "ace/Service_Object.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
/**
* @class ACE_Service_Manager
*
* @brief Provide a standard ACE service for managing all the services
* configured in an ACE_Service_Repository.
*
* This implementation is simple and just handles each client
* request one at a time. There are currently 3 types of requests:
* - List services: If the string "help" is sent, return a list of all
* the services supported by the Service Configurator.
* - Reconfigure: If the string "reconfigure" is sent trigger a
* reconfiguration, which will re-read the local <svc.conf> file.
* - Process directive: If neither "help" nor "reconfigure" is sent,
* simply treat the incoming string as a process directive and pass
* it along to <ACE_Service_Config::process_directive>. This allows
* remote configuration via command-line instructions like
* % echo suspend My_Remote_Service | telnet hostname 3911
*
* Each request is associated with a new connection, which is closed
* when the request is processed. In addition, you must be using the
* singleton <ACE_Reactor::instance> in order to trigger
* reconfigurations.
*/
class ACE_Export ACE_Service_Manager : public ACE_Service_Object
{
public:
/// Constructor.
ACE_Service_Manager ();
/// Destructor.
virtual ~ACE_Service_Manager ();
/// Declare the dynamic allocation hooks.
ACE_ALLOC_HOOK_DECLARE;
protected:
// = Perform the various meta-services.
/// Trigger a reconfiguration of the Service Configurator by
/// re-reading its local <svc.conf> file.
virtual int reconfigure_services ();
/// Determine all the services offered by this daemon and return the
/// information back to the client.
virtual int list_services ();
// = Dynamic linking hooks.
virtual int init (int argc, ACE_TCHAR *argv[]);
virtual int info (ACE_TCHAR **info_string, size_t length) const;
virtual int fini ();
// = Scheduling hooks.
virtual int suspend ();
virtual int resume ();
/// Dump the state of an object.
void dump () const;
protected:
int open (const ACE_INET_Addr &sia);
// = Demultiplexing hooks.
virtual ACE_HANDLE get_handle () const;
virtual int handle_input (ACE_HANDLE fd);
virtual int handle_close (ACE_HANDLE fd, ACE_Reactor_Mask);
virtual int handle_signal (int signum, siginfo_t *, ucontext_t *);
/// Handle one request.
virtual void process_request (ACE_TCHAR *request);
/// Connection to the client (we only support one client connection
/// at a time).
ACE_SOCK_Stream client_stream_;
/// Acceptor instance.
ACE_SOCK_Acceptor acceptor_;
/// Keep track whether we debug or not.
bool debug_;
/// The signal used to trigger reconfiguration.
int signum_;
/// Default port for the Acceptor to listen on.
static u_short DEFAULT_PORT_;
};
ACE_END_VERSIONED_NAMESPACE_DECL
#include /**/ "ace/post.h"
#endif /* _SERVICE_MANAGER_H */
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