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