path: root/src/include/gnunet_testbed_service.h

/*
      This file is part of GNUnet
      (C) 2008, 2009, 2012 Christian Grothoff (and other contributing authors)

      GNUnet is free software; you can redistribute it and/or modify
      it under the terms of the GNU General Public License as published
      by the Free Software Foundation; either version 3, or (at your
      option) any later version.

      GNUnet is distributed in the hope that it will be useful, but
      WITHOUT ANY WARRANTY; without even the implied warranty of
      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      General Public License for more details.

      You should have received a copy of the GNU General Public License
      along with GNUnet; see the file COPYING.  If not, write to the
      Free Software Foundation, Inc., 59 Temple Place - Suite 330,
      Boston, MA 02111-1307, USA.
 */

/**
 * @file include/gnunet_testbed_service.h
 * @brief API for writing tests and creating large-scale
 *        emulation testbeds for GNUnet.
 * @author Christian Grothoff
 */

#ifndef GNUNET_TESTBED_SERVICE_H
#define GNUNET_TESTBED_SERVICE_H

#include "gnunet_util_lib.h"
#include "gnunet_testing_lib.h"

#ifdef __cplusplus
extern "C"
{
#if 0                           /* keep Emacsens' auto-indent happy */
}
#endif
#endif


/**
 * Opaque handle to a host running experiments managed by the testbed framework.
 * The master process must be able to SSH to this host without password (via
 * ssh-agent).
 */
struct GNUNET_TESTBED_Host;

/**
 * Opaque handle to a peer controlled by the testbed framework.  A peer runs
 * at a particular host.
 */
struct GNUNET_TESTBED_Peer;

/**
 * Opaque handle to an abstract operation to be executed by the testbed framework.
 */
struct GNUNET_TESTBED_Operation;

/**
 * Handle to interact with a GNUnet testbed controller.  Each
 * controller has at least one master handle which is created when the
 * controller is created; this master handle interacts with the
 * controller process, destroying it destroys the controller (by
 * closing stdin of the controller process).  Additionally,
 * controllers can interact with each other (in a P2P fashion); those
 * links are established via TCP/IP on the controller's service port.
 */
struct GNUNET_TESTBED_Controller;


/**
 * Create a host to run peers and controllers on.
 *
 * @param hostname name of the host, use "NULL" for localhost
 * @param username username to use for the login; may be NULL
 * @param port port number to use for ssh; use 0 to let ssh decide
 * @return handle to the host, NULL on error
 */
struct GNUNET_TESTBED_Host *
GNUNET_TESTBED_host_create (const char *hostname,
                            const char *username,
                            uint16_t port);



/**
 * Create a host to run peers and controllers on.  This function is used
 * if a peer learns about a host via IPC between controllers (and thus
 * some higher-level controller has already determined the unique IDs).
 *
 * @param id global host ID assigned to the host; 0 is
 *        reserved to always mean 'localhost'
 * @param hostname name of the host, use "NULL" for localhost
 * @param username username to use for the login; may be NULL
 * @param port port number to use for ssh; use 0 to let ssh decide
 * @return handle to the host, NULL on error
 */
struct GNUNET_TESTBED_Host *
GNUNET_TESTBED_host_create_with_id (uint32_t id,
                                    const char *hostname,
                                    const char *username,
                                    uint16_t port);


/**
 * Load a set of hosts from a configuration file.
 *
 * @param filename file with the host specification
 * @param hosts set to the hosts found in the file; caller must free this if
 *          number of hosts returned is greater than 0
 * @return number of hosts returned in 'hosts', 0 on error