2 This file is part of GNUnet
3 (C) 2008, 2009, 2012 Christian Grothoff (and other contributing authors)
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22 * @file include/gnunet_testbed_service.h
23 * @brief API for writing tests and creating large-scale
24 * emulation testbeds for GNUnet.
25 * @author Christian Grothoff
28 #ifndef GNUNET_TESTBED_SERVICE_H
29 #define GNUNET_TESTBED_SERVICE_H
31 #include "gnunet_util_lib.h"
32 #include "gnunet_testing_lib-new.h"
37 #if 0 /* keep Emacsens' auto-indent happy */
44 * Opaque handle to a host running experiments managed by the testbed framework.
45 * The master process must be able to SSH to this host without password (via
48 struct GNUNET_TESTBED_Host;
51 * Opaque handle to a peer controlled by the testbed framework. A peer runs
52 * at a particular host.
54 struct GNUNET_TESTBED_Peer;
57 * Opaque handle to an abstract operation to be executed by the testbed framework.
59 struct GNUNET_TESTBED_Operation;
62 * Handle to interact with a GNUnet testbed controller. Each
63 * controller has at least one master handle which is created when the
64 * controller is created; this master handle interacts with the
65 * controller process, destroying it destroys the controller (by
66 * closing stdin of the controller process). Additionally,
67 * controllers can interact with each other (in a P2P fashion); those
68 * links are established via TCP/IP on the controller's service port.
70 struct GNUNET_TESTBED_Controller;
73 * Handle to a large-scale testbed that is managed at a high level.
75 struct GNUNET_TESTBED_Testbed;
79 * Create a host to run peers and controllers on.
81 * @param hostname name of the host, use "NULL" for localhost
82 * @param username username to use for the login; may be NULL
83 * @param port port number to use for ssh; use 0 to let ssh decide
84 * @return handle to the host, NULL on error
86 struct GNUNET_TESTBED_Host *
87 GNUNET_TESTBED_host_create (const char *hostname,
94 * Create a host to run peers and controllers on. This function is used
95 * if a peer learns about a host via IPC between controllers (and thus
96 * some higher-level controller has already determined the unique IDs).
98 * @param id global host ID assigned to the host; 0 is
99 * reserved to always mean 'localhost'
100 * @param hostname name of the host, use "NULL" for localhost
101 * @param username username to use for the login; may be NULL
102 * @param port port number to use for ssh; use 0 to let ssh decide
103 * @return handle to the host, NULL on error
105 struct GNUNET_TESTBED_Host *
106 GNUNET_TESTBED_host_create_with_id (uint32_t id,
107 const char *hostname,
108 const char *username,
113 * Load a set of hosts from a configuration file.
115 * @param filename file with the host specification
116 * @param hosts set to the hosts found in the file
117 * @return number of hosts returned in 'hosts', 0 on error
120 GNUNET_TESTBED_hosts_load_from_file (const char *filename,
121 struct GNUNET_TESTBED_Host **hosts);
125 * Destroy a host handle. Must only be called once everything
126 * running on that host has been stopped.
128 * @param host handle to destroy
131 GNUNET_TESTBED_host_destroy (struct GNUNET_TESTBED_Host *host);
135 * Enumeration with (at most 64) possible event types that
136 * can be monitored using the testbed framework.
138 enum GNUNET_TESTBED_EventType
141 * A peer has been started.
143 GNUNET_TESTBED_ET_PEER_START = 0,
146 * A peer has been stopped.
148 GNUNET_TESTBED_ET_PEER_STOP = 1,
151 * A connection between two peers was established.
153 GNUNET_TESTBED_ET_CONNECT = 2,
156 * A connection between two peers was torn down.
158 GNUNET_TESTBED_ET_DISCONNECT = 3,
161 * A requested testbed operation has been completed.
163 GNUNET_TESTBED_ET_OPERATION_FINISHED = 4,
166 * The 'GNUNET_TESTBED_run' operation has been completed
168 GNUNET_TESTBED_ET_TESTBED_ONLINE = 5
174 * Types of information that can be requested about a peer.
176 enum GNUNET_TESTBED_PeerInformationType
180 * Special value (not valid for requesting information)
181 * that is used in the event struct if a 'generic' pointer
182 * is returned (for other operations not related to this
185 GNUNET_TESTBED_PIT_GENERIC = 0,
188 * What configuration is the peer using? Returns a 'const struct
189 * GNUNET_CONFIGURATION_Handle *'. Valid until
190 * 'GNUNET_TESTNIG_operation_done' is called. However, the
191 * values may be inaccurate if the peer is reconfigured in
194 GNUNET_TESTBED_PIT_CONFIGURATION,
197 * What is the identity of the peer? Returns a
198 * 'const struct GNUNET_PeerIdentity *'. Valid until
199 * 'GNUNET_TESTNIG_operation_done' is called.
201 GNUNET_TESTBED_PIT_IDENTITY
207 * Argument to GNUNET_TESTBED_ControllerCallback with details about
210 struct GNUNET_TESTBED_EventInformation
216 enum GNUNET_TESTBED_EventType type;
219 * Details about the event.
225 * Details about peer start event.
230 * Handle for the host where the peer
233 struct GNUNET_TESTBED_Host *host;
236 * Handle for the peer that was started.
238 struct GNUNET_TESTBED_Peer *peer;
243 * Details about peer stop event.
249 * Handle for the peer that was started.
251 struct GNUNET_TESTBED_Peer *peer;
256 * Details about connect event.
261 * Handle for one of the connected peers.
263 struct GNUNET_TESTBED_Peer *peer1;
266 * Handle for one of the connected peers.
268 struct GNUNET_TESTBED_Peer *peer2;
273 * Details about disconnect event.
278 * Handle for one of the disconnected peers.
280 struct GNUNET_TESTBED_Peer *peer1;
283 * Handle for one of the disconnected peers.
285 struct GNUNET_TESTBED_Peer *peer2;
290 * Details about an operation finished event.
296 * Handle for the operation that was finished.
298 struct GNUNET_TESTBED_Operation *operation;
301 * Closure that was passed in when the event was
307 * Error message for the operation, NULL on success.
312 * Peer information type; captures which of the types
313 * in the 'op_result' is actually in use.
315 enum GNUNET_TESTBED_PeerInformationType pit;
318 * Pointer to an operation-specific return value; NULL on error;
319 * can be NULL for certain operations. Valid until
320 * 'GNUNET_TESTBED_operation_done' is called.
325 * No result (NULL pointer) or generic result
326 * (whatever the GNUNET_TESTBED_ConnectAdapter returned).
331 * Identity of host running the peer.
333 struct GNUNET_TESTBED_Host *host;
336 * Identity of the peer.
338 const struct GNUNET_PeerIdentity *pid;
341 * Configuration of the peer.
343 const struct GNUNET_CONFIGURATION_Handle *cfg;
347 } operation_finished;
351 * Details about an testbed run completed event.
357 * Error message for the operation, NULL on success.
362 * Array of peers now running (valid until
363 * 'GNUNET_TESTBED_testbed_stop' is called). Note that it is
364 * not allowed to call 'GNUNET_TESTBED_peer_destroy' on peers
367 struct GNUNET_TESTBED_Peer **peers;
370 * Size of the 'peers' array.
372 unsigned int num_peers;
374 } testbed_run_finished;
382 * Signature of the event handler function called by the
383 * respective event controller.
386 * @param event information about the event
388 typedef void (*GNUNET_TESTBED_ControllerCallback)(void *cls,
389 const struct GNUNET_TESTBED_EventInformation *event);
393 * Opaque Handle for Controller process
395 struct GNUNET_TESTBED_ControllerProc;
399 * Callback to signal successfull startup of the controller process
401 * @param cls the closure from GNUNET_TESTBED_controller_start()
402 * @param cfg the configuration with which the controller has been started;
403 * NULL if status is not GNUNET_OK
404 * @param status GNUNET_OK if the startup is successfull; GNUNET_SYSERR if not,
405 * GNUNET_TESTBED_controller_stop() shouldn't be called in this case
407 typedef void (*GNUNET_TESTBED_ControllerStatusCallback) (void *cls,
408 const struct GNUNET_CONFIGURATION_Handle *cfg,
413 * Starts a controller process at the host. FIXME: add controller start callback
414 * with the configuration with which the controller is started
416 * @param controller_ip the ip address of the controller. Will be set as TRUSTED
417 * host when starting testbed controller at host
418 * @param host the host where the controller has to be started; NULL for
420 * @param cfg template configuration to use for the remote controller; the
421 * remote controller will be started with a slightly modified
422 * configuration (port numbers, unix domain sockets and service home
423 * values are changed as per TESTING library on the remote host)
424 * @param cb function called when the controller is successfully started or
425 * dies unexpectedly; GNUNET_TESTBED_controller_stop shouldn't be
426 * called if cb is called with GNUNET_SYSERR as status. Will never be
427 * called in the same task as 'GNUNET_TESTBED_controller_start'
428 * (synchronous errors will be signalled by returning NULL). This
429 * parameter cannot be NULL.
430 * @param cls closure for above callbacks
431 * @return the controller process handle, NULL on errors
433 struct GNUNET_TESTBED_ControllerProc *
434 GNUNET_TESTBED_controller_start (const char *controller_ip,
435 struct GNUNET_TESTBED_Host *host,
436 const struct GNUNET_CONFIGURATION_Handle *cfg,
437 GNUNET_TESTBED_ControllerStatusCallback cb,
442 * Stop the controller process (also will terminate all peers and controllers
443 * dependent on this controller). This function blocks until the testbed has
444 * been fully terminated (!).
446 * @param cproc the controller process handle
449 GNUNET_TESTBED_controller_stop (struct GNUNET_TESTBED_ControllerProc *cproc);
453 * Connect to a controller process using the given configuration at the
456 * @param cfg configuration to use
457 * @param host host to run the controller on; This should be the same host if
458 * the controller was previously started with
459 * GNUNET_TESTBED_controller_start; NULL for localhost
460 * @param host host where this controller is being run;
461 * @param event_mask bit mask with set of events to call 'cc' for;
462 * or-ed values of "1LL" shifted by the
463 * respective 'enum GNUNET_TESTBED_EventType'
464 * (i.e. "(1LL << GNUNET_TESTBED_ET_CONNECT) | ...")
465 * @param cc controller callback to invoke on events
466 * @param cc_cls closure for cc
467 * @return handle to the controller
469 struct GNUNET_TESTBED_Controller *
470 GNUNET_TESTBED_controller_connect (const struct GNUNET_CONFIGURATION_Handle *cfg,
471 struct GNUNET_TESTBED_Host *host,
473 GNUNET_TESTBED_ControllerCallback cc,
478 * Configure shared services at a controller. Using this function,
479 * you can specify that certain services (such as "resolver")
480 * should not be run for each peer but instead be shared
481 * across N peers on the specified host. This function
482 * must be called before any peers are created at the host.
484 * @param controller controller to configure
485 * @param service_name name of the service to share
486 * @param num_peers number of peers that should share one instance
487 * of the specified service (1 for no sharing is the default),
488 * use 0 to disable the service
491 GNUNET_TESTBED_controller_configure_sharing (struct GNUNET_TESTBED_Controller *controller,
492 const char *service_name,
497 * Stop the given controller (also will terminate all peers and
498 * controllers dependent on this controller). This function
499 * blocks until the testbed has been fully terminated (!).
501 * @param controller handle to controller to stop
504 GNUNET_TESTBED_controller_disconnect (struct GNUNET_TESTBED_Controller *controller);
508 * Opaque handle for host registration
510 struct GNUNET_TESTBED_HostRegistrationHandle;
514 * Callback which will be called to after a host registration succeeded or failed
516 * @param cls the closure
517 * @param emsg the error message; NULL if host registration is successful
519 typedef void (* GNUNET_TESTBED_HostRegistrationCompletion) (void *cls,
524 * Register a host with the controller
526 * @param controller the controller handle
527 * @param host the host to register
528 * @param cc the completion callback to call to inform the status of
529 * registration. After calling this callback the registration handle
530 * will be invalid. Cannot be NULL
531 * @param cc_cls the closure for the cc
532 * @return handle to the host registration which can be used to cancel the
533 * registration; NULL if another registration handle is present and
536 struct GNUNET_TESTBED_HostRegistrationHandle *
537 GNUNET_TESTBED_register_host (struct GNUNET_TESTBED_Controller *controller,
538 struct GNUNET_TESTBED_Host *host,
539 GNUNET_TESTBED_HostRegistrationCompletion cc,
544 * Cancel the pending registration. Note that the registration message will
545 * already be queued to be sent to the service, cancellation has only the
546 * effect that the registration completion callback for the registration is
547 * never called and from our perspective the host is not registered until the
548 * completion callback is called.
550 * @param handle the registration handle to cancel
553 GNUNET_TESTBED_cancel_registration (struct GNUNET_TESTBED_HostRegistrationHandle
558 * Create a link from slave controller to delegated controller. Whenever the
559 * master controller is asked to start a peer at the delegated controller the
560 * request will be routed towards slave controller (if a route exists). The
561 * slave controller will then route it to the delegated controller. The
562 * configuration of the slave controller is given and to be used to either
563 * create the slave controller or to connect to an existing slave controller
564 * process. 'is_subordinate' specifies if the given slave controller should be
565 * started and managed by the master controller, or if the slave already has a
566 * master and this is just a secondary master that is also allowed to use the
569 * @param master handle to the master controller who creates the association
570 * @param delegated_host requests to which host should be delegated; cannot be NULL
571 * @param slave_host which host is used to run the slave controller; use NULL to
572 * make the master controller connect to the delegated host
573 * @param slave_cfg configuration to use for the slave controller
574 * @param is_subordinate GNUNET_YES if the controller at delegated_host should
575 * be started by the master controller; GNUNET_NO if we are just
576 * allowed to use the slave via TCP/IP
579 GNUNET_TESTBED_controller_link (struct GNUNET_TESTBED_Controller *master,
580 struct GNUNET_TESTBED_Host *delegated_host,
581 struct GNUNET_TESTBED_Host *slave_host,
582 const struct GNUNET_CONFIGURATION_Handle *slave_cfg,
587 * Same as the GNUNET_TESTBED_controller_link, however expects configuration in
588 * serialized and compressed
590 * @param master handle to the master controller who creates the association
591 * @param delegated_host requests to which host should be delegated; cannot be NULL
592 * @param slave_host which host is used to run the slave controller; use NULL to
593 * make the master controller connect to the delegated host
594 * @param sxcfg serialized and compressed configuration
595 * @param sxcfg_size the size scfg
596 * @param scfg_size the size of uncompressed serialized configuration
597 * @param is_subordinate GNUNET_YES if the controller at delegated_host should
598 * be started by the master controller; GNUNET_NO if we are just
599 * allowed to use the slave via TCP/IP
602 GNUNET_TESTBED_controller_link_2 (struct GNUNET_TESTBED_Controller *master,
603 struct GNUNET_TESTBED_Host *delegated_host,
604 struct GNUNET_TESTBED_Host *slave_host,
612 * Functions of this signature are called when a peer has been successfully
615 * @param cls the closure from GNUNET_TESTBED_peer_create()
616 * @param peer the handle for the created peer; NULL on any error during
618 * @param emsg NULL if peer is not NULL; else MAY contain the error description
620 typedef void (*GNUNET_TESTBED_PeerCreateCallback) (void *cls,
621 struct GNUNET_TESTBED_Peer *peer,
626 * Create the given peer at the specified host using the given
627 * controller. If the given controller is not running on the target
628 * host, it should find or create a controller at the target host and
629 * delegate creating the peer. Explicit delegation paths can be setup
630 * using 'GNUNET_TESTBED_controller_link'. If no explicit delegation
631 * path exists, a direct link with a subordinate controller is setup
632 * for the first delegated peer to a particular host; the subordinate
633 * controller is then destroyed once the last peer that was delegated
634 * to the remote host is stopped.
636 * Creating the peer only creates the handle to manipulate and further
637 * configure the peer; use "GNUNET_TESTBED_peer_start" and
638 * "GNUNET_TESTBED_peer_stop" to actually start/stop the peer's
641 * Note that the given configuration will be adjusted by the
642 * controller to avoid port/path conflicts with other peers.
643 * The "final" configuration can be obtained using
644 * 'GNUNET_TESTBED_peer_get_information'.
646 * @param controller controller process to use
647 * @param host host to run the peer on
648 * @param cfg Template configuration to use for the peer. Should exist until
649 * operation is cancelled or GNUNET_TESTBED_operation_done() is called
650 * @param cb the callback to call when the peer has been created
651 * @param cls the closure to the above callback
652 * @return the operation handle
654 struct GNUNET_TESTBED_Operation *
655 GNUNET_TESTBED_peer_create (struct GNUNET_TESTBED_Controller *controller,
656 struct GNUNET_TESTBED_Host *host,
657 const struct GNUNET_CONFIGURATION_Handle *cfg,
658 GNUNET_TESTBED_PeerCreateCallback cb,
663 * Start the given peer.
665 * @param peer peer to start
666 * @return handle to the operation
668 struct GNUNET_TESTBED_Operation *
669 GNUNET_TESTBED_peer_start (struct GNUNET_TESTBED_Peer *peer);
673 * Stop the given peer. The handle remains valid (use
674 * "GNUNET_TESTBED_peer_destroy" to fully clean up the
675 * state of the peer).
677 * @param peer peer to stop
678 * @return handle to the operation
680 struct GNUNET_TESTBED_Operation *
681 GNUNET_TESTBED_peer_stop (struct GNUNET_TESTBED_Peer *peer);
685 * Request information about a peer.
687 * @param peer peer to request information about
688 * @param pit desired information
689 * @return handle to the operation
691 struct GNUNET_TESTBED_Operation *
692 GNUNET_TESTBED_peer_get_information (struct GNUNET_TESTBED_Peer *peer,
693 enum GNUNET_TESTBED_PeerInformationType pit);
697 * Change peer configuration. Must only be called while the
698 * peer is stopped. Ports and paths cannot be changed this
701 * @param peer peer to change configuration for
702 * @param cfg new configuration (differences to existing
703 * configuration only)
704 * @return handle to the operation
706 struct GNUNET_TESTBED_Operation *
707 GNUNET_TESTBED_peer_update_configuration (struct GNUNET_TESTBED_Peer *peer,
708 const struct GNUNET_CONFIGURATION_Handle *cfg);
712 * Destroy the given peer; the peer should have been
713 * stopped first (if it was started).
715 * @param peer peer to stop
716 * @return handle to the operation
718 struct GNUNET_TESTBED_Operation *
719 GNUNET_TESTBED_peer_destroy (struct GNUNET_TESTBED_Peer *peer);
723 * Options for peer connections.
725 enum GNUNET_TESTBED_ConnectOption
728 * No option (not valid as an argument).
730 GNUNET_TESTBED_CO_NONE = 0,
733 * Allow or disallow a connection between the specified peers.
734 * Followed by GNUNET_NO (int) if a connection is disallowed
735 * or GNUNET_YES if a connection is allowed. Note that the
736 * default (all connections allowed or disallowed) is
737 * specified in the configuration of the controller.
739 GNUNET_TESTBED_CO_ALLOW = 1,
742 * FIXME: add (and implement) options to limit connection to
743 * particular transports, force simulation of particular latencies
744 * or message loss rates, or set bandwidth limitations.
751 * Manipulate the P2P underlay topology by configuring a link
754 * @param op_cls closure argument to give with the operation event
755 * @param p1 first peer
756 * @param p2 second peer
757 * @param co option to change
758 * @param ap option-specific values
759 * @return handle to the operation, NULL if configuring the link at this
760 * time is not allowed
762 struct GNUNET_TESTBED_Operation *
763 GNUNET_TESTBED_underlay_configure_link_va (void *op_cls,
764 struct GNUNET_TESTBED_Peer *p1,
765 struct GNUNET_TESTBED_Peer *p2,
766 enum GNUNET_TESTBED_ConnectOption co,
771 * Manipulate the P2P underlay topology by configuring a link
774 * @param op_cls closure argument to give with the operation event
775 * @param p1 first peer
776 * @param p2 second peer
777 * @param co option to change
778 * @param ... option-specific values
779 * @return handle to the operation, NULL if configuring the link at this
780 * time is not allowed
782 struct GNUNET_TESTBED_Operation *
783 GNUNET_TESTBED_underlay_configure_link (void *op_cls,
784 struct GNUNET_TESTBED_Peer *p1,
785 struct GNUNET_TESTBED_Peer *p2,
786 enum GNUNET_TESTBED_ConnectOption co, ...);
791 * Topologies supported for testbeds.
793 enum GNUNET_TESTBED_TopologyOption
796 * A clique (everyone connected to everyone else). No options.
798 GNUNET_TESTBED_TOPOLOGY_CLIQUE,
801 * Small-world network (2d torus plus random links). Followed
802 * by the number of random links to add (unsigned int).
804 GNUNET_TESTBED_TOPOLOGY_SMALL_WORLD,
807 * Small-world network (ring plus random links). Followed
808 * by the number of random links to add (unsigned int).
810 GNUNET_TESTBED_TOPOLOGY_SMALL_WORLD_RING,
813 * Ring topology. No options.
815 GNUNET_TESTBED_TOPOLOGY_RING,
818 * 2-d torus. No options.
820 GNUNET_TESTBED_TOPOLOGY_2D_TORUS,
823 * Random graph. Followed by the link density, that is the
824 * percentage of links present in relation to a clique
827 GNUNET_TESTBED_TOPOLOGY_ERDOS_RENYI,
830 * Certain percentage of peers are unable to communicate directly
831 * replicating NAT conditions. Followed by the fraction of
832 * NAT'ed peers (float).
834 GNUNET_TESTBED_TOPOLOGY_INTERNAT,
837 * Scale free topology. FIXME: options?
839 GNUNET_TESTBED_TOPOLOGY_SCALE_FREE,
842 * Straight line topology. No options.
844 GNUNET_TESTBED_TOPOLOGY_LINE,
847 * All peers are disconnected. No options.
849 GNUNET_TESTBED_TOPOLOGY_NONE,
852 * Read a topology from a given file. Followed by the name of the file (const char *).
854 GNUNET_TESTBED_TOPOLOGY_FROM_FILE
859 * Configure overall network topology to have a particular shape.
861 * @param op_cls closure argument to give with the operation event
862 * @param num_peers number of peers in 'peers'
863 * @param peers array of 'num_peers' with the peers to configure
864 * @param topo desired underlay topology to use
865 * @param ap topology-specific options
866 * @return handle to the operation, NULL if configuring the topology
867 * is not allowed at this time
869 struct GNUNET_TESTBED_Operation *
870 GNUNET_TESTBED_underlay_configure_topology_va (void *op_cls,
871 unsigned int num_peers,
872 struct GNUNET_TESTBED_Peer **peers,
873 enum GNUNET_TESTBED_TopologyOption topo,
878 * Configure overall network topology to have a particular shape.
880 * @param op_cls closure argument to give with the operation event
881 * @param num_peers number of peers in 'peers'
882 * @param peers array of 'num_peers' with the peers to configure
883 * @param topo desired underlay topology to use
884 * @param ... topology-specific options
885 * @return handle to the operation, NULL if configuring the topology
886 * is not allowed at this time
888 struct GNUNET_TESTBED_Operation *
889 GNUNET_TESTBED_underlay_configure_topology (void *op_cls,
890 unsigned int num_peers,
891 struct GNUNET_TESTBED_Peer **peers,
892 enum GNUNET_TESTBED_TopologyOption topo,
897 * Both peers must have been started before calling this function.
898 * This function then obtains a HELLO from 'p1', gives it to 'p2'
899 * and asks 'p2' to connect to 'p1'.
901 * @param op_cls closure argument to give with the operation event
902 * @param p1 first peer
903 * @param p2 second peer
904 * @return handle to the operation, NULL if connecting these two
905 * peers is fundamentally not possible at this time (peers
906 * not running or underlay disallows)
908 struct GNUNET_TESTBED_Operation *
909 GNUNET_TESTBED_overlay_connect (void *op_cls,
910 struct GNUNET_TESTBED_Peer *p1,
911 struct GNUNET_TESTBED_Peer *p2);
915 * All peers must have been started before calling this function.
916 * This function then connects the given peers in the P2P overlay
917 * using the given topology.
919 * @param op_cls closure argument to give with the operation event
920 * @param num_peers number of peers in 'peers'
921 * @param peers array of 'num_peers' with the peers to configure
922 * @param topo desired underlay topology to use
923 * @param va topology-specific options
924 * @return handle to the operation, NULL if connecting these
925 * peers is fundamentally not possible at this time (peers
926 * not running or underlay disallows)
928 struct GNUNET_TESTBED_Operation *
929 GNUNET_TESTBED_overlay_configure_topology_va (void *op_cls,
930 unsigned int num_peers,
931 struct GNUNET_TESTBED_Peer *peers,
932 enum GNUNET_TESTBED_TopologyOption topo,
937 * All peers must have been started before calling this function.
938 * This function then connects the given peers in the P2P overlay
939 * using the given topology.
941 * @param op_cls closure argument to give with the operation event
942 * @param num_peers number of peers in 'peers'
943 * @param peers array of 'num_peers' with the peers to configure
944 * @param topo desired underlay topology to use
945 * @param ... topology-specific options
946 * @return handle to the operation, NULL if connecting these
947 * peers is fundamentally not possible at this time (peers
948 * not running or underlay disallows)
950 struct GNUNET_TESTBED_Operation *
951 GNUNET_TESTBED_overlay_configure_topology (void *op_cls,
952 unsigned int num_peers,
953 struct GNUNET_TESTBED_Peer *peers,
954 enum GNUNET_TESTBED_TopologyOption topo,
959 * Ask the testbed controller to write the current overlay topology to
960 * a file. Naturally, the file will only contain a snapshot as the
961 * topology may evolve all the time.
963 * @param controller overlay controller to inspect
964 * @param filename name of the file the topology should
968 GNUNET_TESTBED_overlay_write_topology_to_file (struct GNUNET_TESTBED_Controller *controller,
969 const char *filename);
973 * Adapter function called to establish a connection to
977 * @param cfg configuration of the peer to connect to
978 * @return service handle to return in 'op_result', NULL on error
980 typedef void * (*GNUNET_TESTBED_ConnectAdapter)(void *cls,
981 const struct GNUNET_CONFIGURATION_Handle *cfg);
985 * Adapter function called to destroy a connection to
989 * @param op_result service handle returned from the connect adapter
991 typedef void (*GNUNET_TESTBED_DisconnectAdapter)(void *cls,
996 * Connect to a service offered by the given peer. Will ensure that
997 * the request is queued to not overwhelm our ability to create and
998 * maintain connections with other systems. The actual service
999 * handle is then returned via the 'op_result' member in the event
1000 * callback. The 'ca' callback is used to create the connection
1001 * when the time is right; the 'da' callback will be used to
1002 * destroy the connection (upon 'GNUNET_TESTBED_operation_done').
1003 * 'GNUNET_TESTBED_operation_cancel' can be used to abort this
1004 * operation until the event callback has been called.
1006 * @param op_cls closure to pass in operation event
1007 * @param peer peer that runs the service
1008 * @param service_name name of the service to connect to
1009 * @param ca helper function to establish the connection
1010 * @param da helper function to close the connection
1011 * @param cada_cls closure for ca and da
1012 * @return handle for the operation
1014 struct GNUNET_TESTBED_Operation *
1015 GNUNET_TESTBED_service_connect (void *op_cls,
1016 struct GNUNET_TESTBED_Peer *peer,
1017 const char *service_name,
1018 GNUNET_TESTBED_ConnectAdapter ca,
1019 GNUNET_TESTBED_DisconnectAdapter da,
1024 * Cancel a pending operation. Releases all resources
1025 * of the operation and will ensure that no event
1026 * is generated for the operation. Does NOT guarantee
1027 * that the operation will be fully undone (or that
1028 * nothing ever happened).
1030 * @param operation operation to cancel
1033 GNUNET_TESTBED_operation_cancel (struct GNUNET_TESTBED_Operation *operation);
1037 * Signal that the information from an operation has been fully
1038 * processed. This function MUST be called for each event
1039 * of type 'operation_finished' to fully remove the operation
1040 * from the operation queue. After calling this function, the
1041 * 'op_result' becomes invalid (!).
1043 * @param operation operation to signal completion for
1046 GNUNET_TESTBED_operation_done (struct GNUNET_TESTBED_Operation *operation);
1050 * Configure and run a testbed using the given
1051 * master controller on 'num_hosts' starting
1052 * 'num_peers' using the given peer configuration.
1054 * @param controller master controller for the testbed
1055 * (must not be destroyed until after the
1056 * testbed is destroyed).
1057 * @param num_hosts number of hosts in 'hosts', 0 to only
1059 * @param hosts list of hosts to use for the testbed
1060 * @param num_peers number of peers to start
1061 * @param peer_cfg peer configuration template to use
1062 * @param underlay_topology underlay topology to create
1063 * @param va topology-specific options
1064 * @return handle to the testbed
1066 struct GNUNET_TESTBED_Testbed *
1067 GNUNET_TESTBED_create_va (struct GNUNET_TESTBED_Controller *controller,
1068 unsigned int num_hosts,
1069 struct GNUNET_TESTBED_Host **hosts,
1070 unsigned int num_peers,
1071 const struct GNUNET_CONFIGURATION_Handle *peer_cfg,
1072 enum GNUNET_TESTBED_TopologyOption underlay_topology,
1077 * Configure and run a testbed using the given
1078 * master controller on 'num_hosts' starting
1079 * 'num_peers' using the given peer configuration.
1081 * @param controller master controller for the testbed
1082 * (must not be destroyed until after the
1083 * testbed is destroyed).
1084 * @param num_hosts number of hosts in 'hosts', 0 to only
1086 * @param hosts list of hosts to use for the testbed
1087 * @param num_peers number of peers to start
1088 * @param peer_cfg peer configuration template to use
1089 * @param underlay_topology underlay topology to create
1090 * @param ... topology-specific options
1092 struct GNUNET_TESTBED_Testbed *
1093 GNUNET_TESTBED_create (struct GNUNET_TESTBED_Controller *controller,
1094 unsigned int num_hosts,
1095 struct GNUNET_TESTBED_Host **hosts,
1096 unsigned int num_peers,
1097 const struct GNUNET_CONFIGURATION_Handle *peer_cfg,
1098 enum GNUNET_TESTBED_TopologyOption underlay_topology,
1103 * Destroy a testbed. Stops all running peers and then
1104 * destroys all peers. Does NOT destroy the master controller.
1106 * @param testbed testbed to destroy
1109 GNUNET_TESTBED_destroy (struct GNUNET_TESTBED_Testbed *testbed);
1113 * Convenience method for running a testbed with
1114 * a single call. Underlay and overlay topology
1115 * are configured using the "UNDERLAY" and "OVERLAY"
1116 * options in the "[testbed]" section of the configuration\
1117 * (with possible options given in "UNDERLAY_XXX" and/or
1120 * The testbed is to be terminated using a call to
1121 * "GNUNET_SCHEDULER_shutdown".
1123 * @param host_filename name of the file with the 'hosts', NULL
1124 * to run everything on 'localhost'
1125 * @param cfg configuration to use (for testbed, controller and peers)
1126 * @param num_peers number of peers to start; FIXME: maybe put that ALSO into cfg?
1127 * @param event_mask bit mask with set of events to call 'cc' for;
1128 * or-ed values of "1LL" shifted by the
1129 * respective 'enum GNUNET_TESTBED_EventType'
1130 * (i.e. "(1LL << GNUNET_TESTBED_ET_CONNECT) || ...")
1131 * @param cc controller callback to invoke on events
1132 * @param cc_cls closure for cc
1133 * @param master task to run once the testbed is ready
1134 * @param master_cls closure for 'task'.
1137 GNUNET_TESTBED_run (const char *host_filename,
1138 const struct GNUNET_CONFIGURATION_Handle *cfg,
1139 unsigned int num_peers,
1140 uint64_t event_mask,
1141 GNUNET_TESTBED_ControllerCallback cc,
1143 GNUNET_SCHEDULER_Task master,
1148 * Signature of a main function for a testcase.
1150 * @param cls closure
1151 * @param num_peers number of peers in 'peers'
1152 * @param peers handle to peers run in the testbed
1154 typedef void (*GNUNET_TESTBED_TestMaster)(void *cls,
1155 unsigned int num_peers,
1156 struct GNUNET_TESTBED_Peer **peers);
1160 * Convenience method for running a "simple" test on the local system
1161 * with a single call from 'main'. Underlay and overlay topology are
1162 * configured using the "UNDERLAY" and "OVERLAY" options in the
1163 * "[testbed]" section of the configuration (with possible options
1164 * given in "UNDERLAY_XXX" and/or "OVERLAY_XXX").
1166 * The test is to be terminated using a call to
1167 * "GNUNET_SCHEDULER_shutdown". If starting the test fails,
1168 * the program is stopped without 'master' ever being run.
1170 * NOTE: this function should be called from 'main', NOT from
1171 * within a GNUNET_SCHEDULER-loop. This function will initialze
1172 * the scheduler loop, the testbed and then pass control to
1175 * @param testname name of the testcase (to configure logging, etc.)
1176 * @param cfg_filename configuration filename to use
1177 * (for testbed, controller and peers)
1178 * @param num_peers number of peers to start
1179 * @param test_master task to run once the test is ready
1180 * @param test_master_cls closure for 'task'.
1183 GNUNET_TESTBED_test_run (const char *testname,
1184 const char *cfg_filename,
1185 unsigned int num_peers,
1186 GNUNET_TESTBED_TestMaster test_master,
1187 void *test_master_cls);
1190 #if 0 /* keep Emacsens' auto-indent happy */