2 This file is part of GNUnet
3 (C) 2008, 2009, 2012 Christian Grothoff (and other contributing authors)
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13 General Public License for more details.
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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.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;
74 * Create a host to run peers and controllers on.
76 * @param hostname name of the host, use "NULL" for localhost
77 * @param username username to use for the login; may be NULL
78 * @param cfg the configuration to use as a template while starting a controller
79 * on this host. Operation queue sizes specific to a host are also
80 * read from this configuration handle
81 * @param port port number to use for ssh; use 0 to let ssh decide
82 * @return handle to the host, NULL on error
84 struct GNUNET_TESTBED_Host *
85 GNUNET_TESTBED_host_create (const char *hostname,
87 const struct GNUNET_CONFIGURATION_Handle *cfg,
93 * Create a host to run peers and controllers on. This function is used
94 * if a peer learns about a host via IPC between controllers (and thus
95 * some higher-level controller has already determined the unique IDs).
97 * @param id global host ID assigned to the host; 0 is
98 * reserved to always mean 'localhost'
99 * @param hostname name of the host, use "NULL" for localhost
100 * @param username username to use for the login; may be NULL
101 * @param cfg the configuration to use as a template while starting a controller
102 * on this host. Operation queue sizes specific to a host are also
103 * read from this configuration handle
104 * @param port port number to use for ssh; use 0 to let ssh decide
105 * @return handle to the host, NULL on error
107 struct GNUNET_TESTBED_Host *
108 GNUNET_TESTBED_host_create_with_id (uint32_t id,
109 const char *hostname,
110 const char *username,
111 const struct GNUNET_CONFIGURATION_Handle
117 * Load a set of hosts from a configuration file.
119 * @param filename file with the host specification
120 * @param cfg the configuration to use as a template while starting a controller
121 * on any of the loaded hosts. Operation queue sizes specific to a host
122 * are also read from this configuration handle
123 * @param hosts set to the hosts found in the file; caller must free this if
124 * number of hosts returned is greater than 0
125 * @return number of hosts returned in 'hosts', 0 on error
128 GNUNET_TESTBED_hosts_load_from_file (const char *filename,
129 const struct GNUNET_CONFIGURATION_Handle
131 struct GNUNET_TESTBED_Host ***hosts);
135 * Loads the set of host allocated by the LoadLeveler Job Scheduler. This
136 * function is only available when compiled with support for LoadLeveler and is
137 * used for running on the SuperMUC
139 * @param cfg the configuration to use as a template while starting a controller
140 * on any of the loaded hosts. Operation queue sizes specific to a host
141 * are also read from this configuration handle
142 * @param hosts set to the hosts found in the file; caller must free this if
143 * number of hosts returned is greater than 0
144 * @return number of hosts returned in 'hosts', 0 on error
147 GNUNET_TESTBED_hosts_load_from_loadleveler (const struct
148 GNUNET_CONFIGURATION_Handle *cfg,
149 struct GNUNET_TESTBED_Host
153 * Destroy a host handle. Must only be called once everything
154 * running on that host has been stopped.
156 * @param host handle to destroy
159 GNUNET_TESTBED_host_destroy (struct GNUNET_TESTBED_Host *host);
163 * The handle for whether a host is habitable or not
165 struct GNUNET_TESTBED_HostHabitableCheckHandle;
169 * Callbacks of this type are called by GNUNET_TESTBED_is_host_habitable to
170 * inform whether the given host is habitable or not. The Handle returned by
171 * GNUNET_TESTBED_is_host_habitable() is invalid after this callback is called
173 * @param cls the closure given to GNUNET_TESTBED_is_host_habitable()
174 * @param host the host whose status is being reported; will be NULL if the host
175 * given to GNUNET_TESTBED_is_host_habitable() is NULL
176 * @param status GNUNET_YES if it is habitable; GNUNET_NO if not
178 typedef void (*GNUNET_TESTBED_HostHabitableCallback) (void *cls,
186 * Checks whether a host can be used to start testbed service
188 * @param host the host to check
189 * @param config the configuration handle to lookup the path of the testbed
191 * @param cb the callback to call to inform about habitability of the given host
192 * @param cb_cls the closure for the callback
193 * @return NULL upon any error or a handle which can be passed to
194 * GNUNET_TESTBED_is_host_habitable_cancel()
196 struct GNUNET_TESTBED_HostHabitableCheckHandle *
197 GNUNET_TESTBED_is_host_habitable (const struct GNUNET_TESTBED_Host *host,
198 const struct GNUNET_CONFIGURATION_Handle
200 GNUNET_TESTBED_HostHabitableCallback cb,
205 * Function to cancel a request started using GNUNET_TESTBED_is_host_habitable()
207 * @param handle the habitability check handle
210 GNUNET_TESTBED_is_host_habitable_cancel (struct
211 GNUNET_TESTBED_HostHabitableCheckHandle
215 * Obtain the host's hostname.
217 * @param host handle to the host, NULL means 'localhost'
218 * @return hostname of the host
221 GNUNET_TESTBED_host_get_hostname (const struct GNUNET_TESTBED_Host *host);
225 * Enumeration with (at most 64) possible event types that
226 * can be monitored using the testbed framework.
228 enum GNUNET_TESTBED_EventType
231 * A peer has been started.
233 GNUNET_TESTBED_ET_PEER_START = 0,
236 * A peer has been stopped.
238 GNUNET_TESTBED_ET_PEER_STOP = 1,
241 * A connection between two peers was established.
243 GNUNET_TESTBED_ET_CONNECT = 2,
246 * A connection between two peers was torn down.
248 GNUNET_TESTBED_ET_DISCONNECT = 3,
251 * A requested testbed operation has been completed.
253 GNUNET_TESTBED_ET_OPERATION_FINISHED = 4,
256 * The 'GNUNET_TESTBED_run' operation has been completed
258 GNUNET_TESTBED_ET_TESTBED_ONLINE = 5
264 * Types of information that can be requested about a peer.
266 enum GNUNET_TESTBED_PeerInformationType
270 * Special value (not valid for requesting information)
271 * that is used in the event struct if a 'generic' pointer
272 * is returned (for other operations not related to this
275 GNUNET_TESTBED_PIT_GENERIC = 0,
278 * What configuration is the peer using? Returns a 'const struct
279 * GNUNET_CONFIGURATION_Handle *'. Valid until
280 * 'GNUNET_TESTNIG_operation_done' is called. However, the
281 * values may be inaccurate if the peer is reconfigured in
284 GNUNET_TESTBED_PIT_CONFIGURATION,
287 * What is the identity of the peer? Returns a
288 * 'const struct GNUNET_PeerIdentity *'. Valid until
289 * 'GNUNET_TESTNIG_operation_done' is called.
291 GNUNET_TESTBED_PIT_IDENTITY
297 * Argument to GNUNET_TESTBED_ControllerCallback with details about
300 struct GNUNET_TESTBED_EventInformation
306 enum GNUNET_TESTBED_EventType type;
309 * Details about the event.
315 * Details about peer start event.
320 * Handle for the host where the peer
323 struct GNUNET_TESTBED_Host *host;
326 * Handle for the peer that was started.
328 struct GNUNET_TESTBED_Peer *peer;
333 * Details about peer stop event.
339 * Handle for the peer that was started.
341 struct GNUNET_TESTBED_Peer *peer;
346 * Details about connect event.
351 * Handle for one of the connected peers.
353 struct GNUNET_TESTBED_Peer *peer1;
356 * Handle for one of the connected peers.
358 struct GNUNET_TESTBED_Peer *peer2;
363 * Details about disconnect event.
368 * Handle for one of the disconnected peers.
370 struct GNUNET_TESTBED_Peer *peer1;
373 * Handle for one of the disconnected peers.
375 struct GNUNET_TESTBED_Peer *peer2;
380 * Details about an operation finished event.
386 * Handle for the operation that was finished.
388 struct GNUNET_TESTBED_Operation *operation;
391 * Closure that was passed in when the event was
397 * Error message for the operation, NULL on success.
402 * No result (NULL pointer) or generic result
403 * (whatever the GNUNET_TESTBED_ConnectAdapter returned).
407 } operation_finished;
410 * Details about an testbed run completed event.
416 * Error message for the operation, NULL on success.
421 * Array of peers now running (valid until
422 * 'GNUNET_TESTBED_testbed_stop' is called). Note that it is
423 * not allowed to call 'GNUNET_TESTBED_peer_destroy' on peers
426 struct GNUNET_TESTBED_Peer **peers;
429 * Size of the 'peers' array.
431 unsigned int num_peers;
433 } testbed_run_finished;
441 * Signature of the event handler function called by the
442 * respective event controller.
445 * @param event information about the event
447 typedef void (*GNUNET_TESTBED_ControllerCallback)(void *cls,
448 const struct GNUNET_TESTBED_EventInformation *event);
452 * Opaque Handle for Controller process
454 struct GNUNET_TESTBED_ControllerProc;
458 * Callback to signal successfull startup of the controller process
460 * @param cls the closure from GNUNET_TESTBED_controller_start()
461 * @param cfg the configuration with which the controller has been started;
462 * NULL if status is not GNUNET_OK
463 * @param status GNUNET_OK if the startup is successfull; GNUNET_SYSERR if not,
464 * GNUNET_TESTBED_controller_stop() shouldn't be called in this case
466 typedef void (*GNUNET_TESTBED_ControllerStatusCallback) (void *cls,
467 const struct GNUNET_CONFIGURATION_Handle *cfg,
472 * Starts a controller process at the given host.
474 * @param trusted_ip the ip address of the controller which will be set as TRUSTED
475 * HOST(all connections form this ip are permitted by the testbed) when
476 * starting testbed controller at host. This can either be a single ip
477 * address or a network address in CIDR notation.
478 * @param host the host where the controller has to be started; NULL for
480 * @param cfg template configuration to use for the remote controller; the
481 * remote controller will be started with a slightly modified
482 * configuration (port numbers, unix domain sockets and service home
483 * values are changed as per TESTING library on the remote host)
484 * @param cb function called when the controller is successfully started or
485 * dies unexpectedly; GNUNET_TESTBED_controller_stop shouldn't be
486 * called if cb is called with GNUNET_SYSERR as status. Will never be
487 * called in the same task as 'GNUNET_TESTBED_controller_start'
488 * (synchronous errors will be signalled by returning NULL). This
489 * parameter cannot be NULL.
490 * @param cls closure for above callbacks
491 * @return the controller process handle, NULL on errors
493 struct GNUNET_TESTBED_ControllerProc *
494 GNUNET_TESTBED_controller_start (const char *trusted_ip,
495 struct GNUNET_TESTBED_Host *host,
496 const struct GNUNET_CONFIGURATION_Handle *cfg,
497 GNUNET_TESTBED_ControllerStatusCallback cb,
502 * Stop the controller process (also will terminate all peers and controllers
503 * dependent on this controller). This function blocks until the testbed has
504 * been fully terminated (!). The controller status cb from
505 * GNUNET_TESTBED_controller_start() will not be called.
507 * @param cproc the controller process handle
510 GNUNET_TESTBED_controller_stop (struct GNUNET_TESTBED_ControllerProc *cproc);
514 * Connect to a controller process using the given configuration at the
517 * @param cfg configuration to use
518 * @param host host to run the controller on; This should be the same host if
519 * the controller was previously started with
520 * GNUNET_TESTBED_controller_start; NULL for localhost
521 * @param host host where this controller is being run;
522 * @param event_mask bit mask with set of events to call 'cc' for;
523 * or-ed values of "1LL" shifted by the
524 * respective 'enum GNUNET_TESTBED_EventType'
525 * (i.e. "(1LL << GNUNET_TESTBED_ET_CONNECT) | ...")
526 * @param cc controller callback to invoke on events
527 * @param cc_cls closure for cc
528 * @return handle to the controller
530 struct GNUNET_TESTBED_Controller *
531 GNUNET_TESTBED_controller_connect (const struct GNUNET_CONFIGURATION_Handle *cfg,
532 struct GNUNET_TESTBED_Host *host,
534 GNUNET_TESTBED_ControllerCallback cc,
539 * Configure shared services at a controller. Using this function,
540 * you can specify that certain services (such as "resolver")
541 * should not be run for each peer but instead be shared
542 * across N peers on the specified host. This function
543 * must be called before any peers are created at the host.
545 * @param controller controller to configure
546 * @param service_name name of the service to share
547 * @param num_peers number of peers that should share one instance
548 * of the specified service (1 for no sharing is the default),
549 * use 0 to disable the service
552 GNUNET_TESTBED_controller_configure_sharing (struct GNUNET_TESTBED_Controller *controller,
553 const char *service_name,
558 * Stop the given controller (also will terminate all peers and
559 * controllers dependent on this controller). This function
560 * blocks until the testbed has been fully terminated (!).
562 * @param controller handle to controller to stop
565 GNUNET_TESTBED_controller_disconnect (struct GNUNET_TESTBED_Controller *controller);
569 * Opaque handle for host registration
571 struct GNUNET_TESTBED_HostRegistrationHandle;
575 * Callback which will be called to after a host registration succeeded or failed
577 * @param cls the closure
578 * @param emsg the error message; NULL if host registration is successful
580 typedef void (* GNUNET_TESTBED_HostRegistrationCompletion) (void *cls,
585 * Register a host with the controller. This makes the controller aware of the
586 * host. A host should be registered at the controller before starting a
587 * sub-controller on that host using GNUNET_TESTBED_controller_link().
589 * @param controller the controller handle
590 * @param host the host to register
591 * @param cc the completion callback to call to inform the status of
592 * registration. After calling this callback the registration handle
593 * will be invalid. Cannot be NULL
594 * @param cc_cls the closure for the cc
595 * @return handle to the host registration which can be used to cancel the
596 * registration; NULL if another registration handle is present and
599 struct GNUNET_TESTBED_HostRegistrationHandle *
600 GNUNET_TESTBED_register_host (struct GNUNET_TESTBED_Controller *controller,
601 struct GNUNET_TESTBED_Host *host,
602 GNUNET_TESTBED_HostRegistrationCompletion cc,
607 * Cancel the pending registration. Note that the registration message will
608 * already be queued to be sent to the service, cancellation has only the
609 * effect that the registration completion callback for the registration is
610 * never called and from our perspective the host is not registered until the
611 * completion callback is called.
613 * @param handle the registration handle to cancel
616 GNUNET_TESTBED_cancel_registration (struct GNUNET_TESTBED_HostRegistrationHandle
621 * Callback to be called when an operation is completed
623 * @param cls the callback closure from functions generating an operation
624 * @param op the operation that has been finished
625 * @param emsg error message in case the operation has failed; will be NULL if
626 * operation has executed successfully.
628 typedef void (*GNUNET_TESTBED_OperationCompletionCallback) (void *cls,
630 GNUNET_TESTBED_Operation
636 * Create a link from slave controller to delegated controller. Whenever the
637 * master controller is asked to start a peer at the delegated controller the
638 * request will be routed towards slave controller (if a route exists). The
639 * slave controller will then route it to the delegated controller. The
640 * configuration of the delegated controller is given and is used to either
641 * create the delegated controller or to connect to an existing controller. Note
642 * that while starting the delegated controller the configuration will be
643 * modified to accommodate available free ports. the 'is_subordinate' specifies
644 * if the given delegated controller should be started and managed by the slave
645 * controller, or if the delegated controller already has a master and the slave
646 * controller connects to it as a non master controller. The success or failure
647 * of this operation will be signalled through the
648 * GNUNET_TESTBED_ControllerCallback() with an event of type
649 * GNUNET_TESTBED_ET_OPERATION_FINISHED
651 * @param op_cls the operation closure for the event which is generated to
652 * signal success or failure of this operation
653 * @param master handle to the master controller who creates the association
654 * @param delegated_host requests to which host should be delegated; cannot be NULL
655 * @param slave_host which host is used to run the slave controller; use NULL to
656 * make the master controller connect to the delegated host
657 * @param slave_cfg configuration to use for the slave controller
658 * @param is_subordinate GNUNET_YES if the controller at delegated_host should
659 * be started by the slave controller; GNUNET_NO if the slave
660 * controller has to connect to the already started delegated
661 * controller via TCP/IP
662 * @return the operation handle
664 struct GNUNET_TESTBED_Operation *
665 GNUNET_TESTBED_controller_link (void *op_cls,
666 struct GNUNET_TESTBED_Controller *master,
667 struct GNUNET_TESTBED_Host *delegated_host,
668 struct GNUNET_TESTBED_Host *slave_host,
669 const struct GNUNET_CONFIGURATION_Handle
675 * Same as the GNUNET_TESTBED_controller_link, however expects configuration in
676 * serialized and compressed
678 * @param op_cls the operation closure for the event which is generated to
679 * signal success or failure of this operation
680 * @param master handle to the master controller who creates the association
681 * @param delegated_host requests to which host should be delegated; cannot be NULL
682 * @param slave_host which host is used to run the slave controller; use NULL to
683 * make the master controller connect to the delegated host
684 * @param sxcfg serialized and compressed configuration
685 * @param sxcfg_size the size sxcfg
686 * @param scfg_size the size of uncompressed serialized configuration
687 * @param is_subordinate GNUNET_YES if the controller at delegated_host should
688 * be started by the slave controller; GNUNET_NO if the slave
689 * controller has to connect to the already started delegated
690 * controller via TCP/IP
691 * @return the operation handle
693 struct GNUNET_TESTBED_Operation *
694 GNUNET_TESTBED_controller_link_2 (void *op_cls,
695 struct GNUNET_TESTBED_Controller *master,
696 struct GNUNET_TESTBED_Host *delegated_host,
697 struct GNUNET_TESTBED_Host *slave_host,
705 * Function to acquire the configuration of a running slave controller. The
706 * completion of the operation is signalled through the controller_cb from
707 * GNUNET_TESTBED_controller_connect(). If the operation is successful the
708 * handle to the configuration is available in the generic pointer of
709 * operation_finished field of struct GNUNET_TESTBED_EventInformation.
711 * @param op_cls the closure for the operation
712 * @param master the handle to master controller
713 * @param slave_host the host where the slave controller is running; the handle
714 * to the slave_host should remain valid until this operation is
715 * cancelled or marked as finished
716 * @return the operation handle; NULL if the slave_host is not registered at
719 struct GNUNET_TESTBED_Operation *
720 GNUNET_TESTBED_get_slave_config (void *op_cls,
721 struct GNUNET_TESTBED_Controller *master,
722 struct GNUNET_TESTBED_Host *slave_host);
726 * Functions of this signature are called when a peer has been successfully
729 * @param cls the closure from GNUNET_TESTBED_peer_create()
730 * @param peer the handle for the created peer; NULL on any error during
732 * @param emsg NULL if peer is not NULL; else MAY contain the error description
734 typedef void (*GNUNET_TESTBED_PeerCreateCallback) (void *cls,
735 struct GNUNET_TESTBED_Peer *peer,
740 * Create the given peer at the specified host using the given
741 * controller. If the given controller is not running on the target
742 * host, it should find or create a controller at the target host and
743 * delegate creating the peer. Explicit delegation paths can be setup
744 * using 'GNUNET_TESTBED_controller_link'. If no explicit delegation
745 * path exists, a direct link with a subordinate controller is setup
746 * for the first delegated peer to a particular host; the subordinate
747 * controller is then destroyed once the last peer that was delegated
748 * to the remote host is stopped.
750 * Creating the peer only creates the handle to manipulate and further
751 * configure the peer; use "GNUNET_TESTBED_peer_start" and
752 * "GNUNET_TESTBED_peer_stop" to actually start/stop the peer's
755 * Note that the given configuration will be adjusted by the
756 * controller to avoid port/path conflicts with other peers.
757 * The "final" configuration can be obtained using
758 * 'GNUNET_TESTBED_peer_get_information'.
760 * @param controller controller process to use
761 * @param host host to run the peer on; cannot be NULL
762 * @param cfg Template configuration to use for the peer. Should exist until
763 * operation is cancelled or GNUNET_TESTBED_operation_done() is called
764 * @param cb the callback to call when the peer has been created
765 * @param cls the closure to the above callback
766 * @return the operation handle
768 struct GNUNET_TESTBED_Operation *
769 GNUNET_TESTBED_peer_create (struct GNUNET_TESTBED_Controller *controller,
770 struct GNUNET_TESTBED_Host *host,
771 const struct GNUNET_CONFIGURATION_Handle *cfg,
772 GNUNET_TESTBED_PeerCreateCallback cb,
777 * Functions of this signature are called when a peer has been successfully
778 * started or stopped.
780 * @param cls the closure from GNUNET_TESTBED_peer_start/stop()
781 * @param emsg NULL on success; otherwise an error description
783 typedef void (*GNUNET_TESTBED_PeerChurnCallback) (void *cls,
788 * Start the given peer.
790 * @param op_cls the closure for this operation; will be set in
791 * event->details.operation_finished.op_cls when this operation fails.
792 * @param peer peer to start
793 * @param pcc function to call upon completion
794 * @param pcc_cls closure for 'pcc'
795 * @return handle to the operation
797 struct GNUNET_TESTBED_Operation *
798 GNUNET_TESTBED_peer_start (void *op_cls,
799 struct GNUNET_TESTBED_Peer *peer,
800 GNUNET_TESTBED_PeerChurnCallback pcc,
805 * Stop the given peer. The handle remains valid (use
806 * "GNUNET_TESTBED_peer_destroy" to fully clean up the
807 * state of the peer).
809 * @param peer peer to stop
810 * @param pcc function to call upon completion
811 * @param pcc_cls closure for 'pcc'
812 * @return handle to the operation
814 struct GNUNET_TESTBED_Operation *
815 GNUNET_TESTBED_peer_stop (struct GNUNET_TESTBED_Peer *peer,
816 GNUNET_TESTBED_PeerChurnCallback pcc,
821 * Data returned from GNUNET_TESTBED_peer_get_information
823 struct GNUNET_TESTBED_PeerInformation
826 * Peer information type; captures which of the types
827 * in the 'op_result' is actually in use.
829 enum GNUNET_TESTBED_PeerInformationType pit;
832 * The result of the get information operation; Choose according to the pit
837 * The configuration of the peer
839 struct GNUNET_CONFIGURATION_Handle *cfg;
842 * The identity of the peer
844 struct GNUNET_PeerIdentity *id;
850 * Callback to be called when the requested peer information is available
852 * @param cb_cls the closure from GNUNET_TETSBED_peer_get_information()
853 * @param op the operation this callback corresponds to
854 * @param pinfo the result; will be NULL if the operation has failed
855 * @param emsg error message if the operation has failed; will be NULL if the
856 * operation is successfull
858 typedef void (*GNUNET_TESTBED_PeerInfoCallback) (void *cb_cls,
859 struct GNUNET_TESTBED_Operation
862 GNUNET_TESTBED_PeerInformation
868 * Request information about a peer. The controller callback will not be called
869 * with event type GNUNET_TESTBED_ET_OPERATION_FINISHED when result for this
870 * operation is available. Instead, the GNUNET_TESTBED_PeerInfoCallback() will
873 * @param peer peer to request information about
874 * @param pit desired information
875 * @param cb the convenience callback to be called when results for this
876 * operation are available
877 * @param cb_cls the closure for the above callback
878 * @return handle to the operation
880 struct GNUNET_TESTBED_Operation *
881 GNUNET_TESTBED_peer_get_information (struct GNUNET_TESTBED_Peer *peer,
882 enum GNUNET_TESTBED_PeerInformationType
884 GNUNET_TESTBED_PeerInfoCallback cb,
889 * Change peer configuration. Must only be called while the
890 * peer is stopped. Ports and paths cannot be changed this
893 * @param peer peer to change configuration for
894 * @param cfg new configuration (differences to existing
895 * configuration only)
896 * @return handle to the operation
898 struct GNUNET_TESTBED_Operation *
899 GNUNET_TESTBED_peer_update_configuration (struct GNUNET_TESTBED_Peer *peer,
900 const struct GNUNET_CONFIGURATION_Handle *cfg);
904 * Destroy the given peer; the peer should have been
905 * stopped first (if it was started).
907 * @param peer peer to stop
908 * @return handle to the operation
910 struct GNUNET_TESTBED_Operation *
911 GNUNET_TESTBED_peer_destroy (struct GNUNET_TESTBED_Peer *peer);
915 * Stops and destroys all peers. Is equivalent of calling
916 * GNUNET_TESTBED_peer_stop() and GNUNET_TESTBED_peer_destroy() on all peers,
917 * except that the peer stop event and operation finished event corresponding to
918 * the respective functions are not generated. This function should be called
919 * when there are no other pending operations. If there are pending operations,
920 * it will return NULL
922 * @param controller the controller to send this message to
923 * @param op_cls closure for the operation
924 * @param cb the callback to call when all peers are stopped and destroyed
925 * @param cb_cls the closure for the callback
926 * @return operation handle on success; NULL if any pending operations are
929 struct GNUNET_TESTBED_Operation *
930 GNUNET_TESTBED_shutdown_peers (struct GNUNET_TESTBED_Controller *controller,
932 GNUNET_TESTBED_OperationCompletionCallback cb,
938 * Options for peer connections.
940 enum GNUNET_TESTBED_ConnectOption
943 * No option (not valid as an argument).
945 GNUNET_TESTBED_CO_NONE = 0,
948 * Allow or disallow a connection between the specified peers.
949 * Followed by GNUNET_NO (int) if a connection is disallowed
950 * or GNUNET_YES if a connection is allowed. Note that the
951 * default (all connections allowed or disallowed) is
952 * specified in the configuration of the controller.
954 GNUNET_TESTBED_CO_ALLOW = 1,
957 * FIXME: add (and implement) options to limit connection to
958 * particular transports, force simulation of particular latencies
959 * or message loss rates, or set bandwidth limitations.
966 * Manipulate the P2P underlay topology by configuring a link
969 * @param op_cls closure argument to give with the operation event
970 * @param p1 first peer
971 * @param p2 second peer
972 * @param co option to change
973 * @param ap option-specific values
974 * @return handle to the operation, NULL if configuring the link at this
975 * time is not allowed
977 struct GNUNET_TESTBED_Operation *
978 GNUNET_TESTBED_underlay_configure_link_va (void *op_cls,
979 struct GNUNET_TESTBED_Peer *p1,
980 struct GNUNET_TESTBED_Peer *p2,
981 enum GNUNET_TESTBED_ConnectOption co,
986 * Manipulate the P2P underlay topology by configuring a link
989 * @param op_cls closure argument to give with the operation event
990 * @param p1 first peer
991 * @param p2 second peer
992 * @param co option to change
993 * @param ... option-specific values
994 * @return handle to the operation, NULL if configuring the link at this
995 * time is not allowed
997 struct GNUNET_TESTBED_Operation *
998 GNUNET_TESTBED_underlay_configure_link (void *op_cls,
999 struct GNUNET_TESTBED_Peer *p1,
1000 struct GNUNET_TESTBED_Peer *p2,
1001 enum GNUNET_TESTBED_ConnectOption co, ...);
1006 * Topologies and topology options supported for testbeds. Options should always
1007 * end with GNUNET_TESTBED_TOPOLOGY_OPTION_END
1009 enum GNUNET_TESTBED_TopologyOption
1012 * A clique (everyone connected to everyone else). No options. If there are N
1013 * peers this topology results in (N * (N -1)) connections.
1015 GNUNET_TESTBED_TOPOLOGY_CLIQUE,
1018 * Small-world network (2d torus plus random links). Followed
1019 * by the number of random links to add (unsigned int).
1021 GNUNET_TESTBED_TOPOLOGY_SMALL_WORLD,
1024 * Small-world network (ring plus random links). Followed
1025 * by the number of random links to add (unsigned int).
1027 GNUNET_TESTBED_TOPOLOGY_SMALL_WORLD_RING,
1030 * Ring topology. No options.
1032 GNUNET_TESTBED_TOPOLOGY_RING,
1035 * 2-d torus. No options.
1037 GNUNET_TESTBED_TOPOLOGY_2D_TORUS,
1040 * Random graph. Followed by the number of random links to be established
1043 GNUNET_TESTBED_TOPOLOGY_ERDOS_RENYI,
1046 * Certain percentage of peers are unable to communicate directly
1047 * replicating NAT conditions. Followed by the fraction of
1048 * NAT'ed peers (float).
1050 GNUNET_TESTBED_TOPOLOGY_INTERNAT,
1053 * Scale free topology. No options.
1055 GNUNET_TESTBED_TOPOLOGY_SCALE_FREE,
1058 * Straight line topology. No options.
1060 GNUNET_TESTBED_TOPOLOGY_LINE,
1063 * Read a topology from a given file. Followed by the name of the file (const char *).
1065 GNUNET_TESTBED_TOPOLOGY_FROM_FILE,
1068 * All peers are disconnected. No options.
1070 GNUNET_TESTBED_TOPOLOGY_NONE,
1073 * The options should always end with this
1075 GNUNET_TESTBED_TOPOLOGY_OPTION_END,
1077 /* The following are not topologies but influence how the topology has to be
1078 setup. These options should follow the topology specific options (if
1079 required by the chosen topology). Note that these should be given before
1080 GNUNET_TESTBED_TOPOLOGY_OPTION_END */
1083 * How many times should the failed overlay connect operations be retried
1084 * before giving up. The default if this option is not specified is to retry
1085 * 3 times. This option takes and unsigned integer as a parameter. Use this
1086 * option with parameter 0 to disable retrying of failed overlay connect
1089 GNUNET_TESTBED_TOPOLOGY_RETRY_CNT
1094 * Configure overall network topology to have a particular shape.
1096 * @param op_cls closure argument to give with the operation event
1097 * @param num_peers number of peers in 'peers'
1098 * @param peers array of 'num_peers' with the peers to configure
1099 * @param topo desired underlay topology to use
1100 * @param ap topology-specific options
1101 * @return handle to the operation, NULL if configuring the topology
1102 * is not allowed at this time
1104 struct GNUNET_TESTBED_Operation *
1105 GNUNET_TESTBED_underlay_configure_topology_va (void *op_cls,
1106 unsigned int num_peers,
1107 struct GNUNET_TESTBED_Peer **peers,
1108 enum GNUNET_TESTBED_TopologyOption topo,
1113 * Configure overall network topology to have a particular shape.
1115 * @param op_cls closure argument to give with the operation event
1116 * @param num_peers number of peers in 'peers'
1117 * @param peers array of 'num_peers' with the peers to configure
1118 * @param topo desired underlay topology to use
1119 * @param ... topology-specific options
1120 * @return handle to the operation, NULL if configuring the topology
1121 * is not allowed at this time
1123 struct GNUNET_TESTBED_Operation *
1124 GNUNET_TESTBED_underlay_configure_topology (void *op_cls,
1125 unsigned int num_peers,
1126 struct GNUNET_TESTBED_Peer **peers,
1127 enum GNUNET_TESTBED_TopologyOption topo,
1132 * Both peers must have been started before calling this function.
1133 * This function then obtains a HELLO from 'p1', gives it to 'p2'
1134 * and asks 'p2' to connect to 'p1'.
1136 * @param op_cls closure argument to give with the operation event
1137 * @param cb the callback to call when this operation has finished
1138 * @param cb_cls the closure for the above callback
1139 * @param p1 first peer
1140 * @param p2 second peer
1141 * @return handle to the operation, NULL if connecting these two
1142 * peers is fundamentally not possible at this time (peers
1143 * not running or underlay disallows)
1145 struct GNUNET_TESTBED_Operation *
1146 GNUNET_TESTBED_overlay_connect (void *op_cls,
1147 GNUNET_TESTBED_OperationCompletionCallback cb,
1149 struct GNUNET_TESTBED_Peer *p1,
1150 struct GNUNET_TESTBED_Peer *p2);
1154 * Callbacks of this type are called when topology configuration is completed
1156 * @param cls the operation closure given to
1157 * GNUNET_TESTBED_overlay_configure_topology_va() and
1158 * GNUNET_TESTBED_overlay_configure() calls
1159 * @param nsuccess the number of successful overlay connects
1160 * @param nfailures the number of overlay connects which failed
1162 typedef void (*GNUNET_TESTBED_TopologyCompletionCallback) (void *cls,
1163 unsigned int nsuccess,
1164 unsigned int nfailures);
1168 * All peers must have been started before calling this function.
1169 * This function then connects the given peers in the P2P overlay
1170 * using the given topology.
1172 * @param op_cls closure argument to give with the peer connect operation events
1173 * generated through this function
1174 * @param num_peers number of peers in 'peers'
1175 * @param peers array of 'num_peers' with the peers to configure
1176 * @param max_connections the maximums number of overlay connections that will
1177 * be made to achieve the given topology
1178 * @param comp_cb the completion callback to call when the topology generation
1180 * @param comp_cb_cls closure for the above completion callback
1181 * @param topo desired underlay topology to use
1182 * @param va topology-specific options
1183 * @return handle to the operation, NULL if connecting these
1184 * peers is fundamentally not possible at this time (peers
1185 * not running or underlay disallows) or if num_peers is less than 2
1187 struct GNUNET_TESTBED_Operation *
1188 GNUNET_TESTBED_overlay_configure_topology_va (void *op_cls,
1189 unsigned int num_peers,
1190 struct GNUNET_TESTBED_Peer **peers,
1191 unsigned int *max_connections,
1192 GNUNET_TESTBED_TopologyCompletionCallback
1195 enum GNUNET_TESTBED_TopologyOption topo,
1200 * All peers must have been started before calling this function.
1201 * This function then connects the given peers in the P2P overlay
1202 * using the given topology.
1204 * @param op_cls closure argument to give with the peer connect operation events
1205 * generated through this function
1206 * @param num_peers number of peers in 'peers'
1207 * @param peers array of 'num_peers' with the peers to configure
1208 * @param max_connections the maximums number of overlay connections that will
1209 * be made to achieve the given topology
1210 * @param comp_cb the completion callback to call when the topology generation
1212 * @param comp_cb_cls closure for the above completion callback
1213 * @param topo desired underlay topology to use
1214 * @param ... topology-specific options
1215 * @return handle to the operation, NULL if connecting these
1216 * peers is fundamentally not possible at this time (peers
1217 * not running or underlay disallows) or if num_peers is less than 2
1219 struct GNUNET_TESTBED_Operation *
1220 GNUNET_TESTBED_overlay_configure_topology (void *op_cls,
1221 unsigned int num_peers,
1222 struct GNUNET_TESTBED_Peer **peers,
1223 unsigned int *max_connections,
1224 GNUNET_TESTBED_TopologyCompletionCallback
1227 enum GNUNET_TESTBED_TopologyOption topo,
1232 * Ask the testbed controller to write the current overlay topology to
1233 * a file. Naturally, the file will only contain a snapshot as the
1234 * topology may evolve all the time.
1235 * FIXME: needs continuation!?
1237 * @param controller overlay controller to inspect
1238 * @param filename name of the file the topology should
1242 GNUNET_TESTBED_overlay_write_topology_to_file (struct GNUNET_TESTBED_Controller *controller,
1243 const char *filename);
1247 * Adapter function called to establish a connection to
1250 * @param cls closure
1251 * @param cfg configuration of the peer to connect to; will be available until
1252 * GNUNET_TESTBED_operation_done() is called on the operation returned
1253 * from GNUNET_TESTBED_service_connect()
1254 * @return service handle to return in 'op_result', NULL on error
1256 typedef void * (*GNUNET_TESTBED_ConnectAdapter)(void *cls,
1257 const struct GNUNET_CONFIGURATION_Handle *cfg);
1261 * Adapter function called to destroy a connection to
1264 * @param cls closure
1265 * @param op_result service handle returned from the connect adapter
1267 typedef void (*GNUNET_TESTBED_DisconnectAdapter)(void *cls,
1272 * Callback to be called when a service connect operation is completed
1274 * @param cls the callback closure from functions generating an operation
1275 * @param op the operation that has been finished
1276 * @param ca_result the service handle returned from GNUNET_TESTBED_ConnectAdapter()
1277 * @param emsg error message in case the operation has failed; will be NULL if
1278 * operation has executed successfully.
1280 typedef void (*GNUNET_TESTBED_ServiceConnectCompletionCallback) (void *cls,
1282 GNUNET_TESTBED_Operation
1291 * Connect to a service offered by the given peer. Will ensure that
1292 * the request is queued to not overwhelm our ability to create and
1293 * maintain connections with other systems. The actual service
1294 * handle is then returned via the 'op_result' member in the event
1295 * callback. The 'ca' callback is used to create the connection
1296 * when the time is right; the 'da' callback will be used to
1297 * destroy the connection (upon 'GNUNET_TESTBED_operation_done').
1298 * 'GNUNET_TESTBED_operation_cancel' can be used to abort this
1299 * operation until the event callback has been called.
1301 * @param op_cls closure to pass in operation event // FIXME: didn't we say we'd no longer use the global callback for these? -CG
1302 * @param peer peer that runs the service
1303 * @param service_name name of the service to connect to
1304 * @param cb the callback to call when this operation finishes
1305 * @param cb_cls closure for the above callback
1306 * @param ca helper function to establish the connection
1307 * @param da helper function to close the connection
1308 * @param cada_cls closure for ca and da
1309 * @return handle for the operation
1311 struct GNUNET_TESTBED_Operation *
1312 GNUNET_TESTBED_service_connect (void *op_cls,
1313 struct GNUNET_TESTBED_Peer *peer,
1314 const char *service_name,
1315 GNUNET_TESTBED_ServiceConnectCompletionCallback cb,
1317 GNUNET_TESTBED_ConnectAdapter ca,
1318 GNUNET_TESTBED_DisconnectAdapter da,
1323 * This function is used to signal that the event information (struct
1324 * GNUNET_TESTBED_EventInformation) from an operation has been fully processed
1325 * i.e. if the event callback is ever called for this operation. If the event
1326 * callback for this operation has not yet been called, calling this function
1327 * cancels the operation, frees its resources and ensures the no event is
1328 * generated with respect to this operation. Note that however cancelling an
1329 * operation does NOT guarantee that the operation will be fully undone (or that
1330 * nothing ever happened).
1332 * This function MUST be called for every operation to fully remove the
1333 * operation from the operation queue. After calling this function, if
1334 * operation is completed and its event information is of type
1335 * GNUNET_TESTBED_ET_OPERATION_FINISHED, the 'op_result' becomes invalid (!).
1337 * If the operation is generated from GNUNET_TESTBED_service_connect() then
1338 * calling this function on such as operation calls the disconnect adapter if
1339 * the connect adapter was ever called.
1341 * @param operation operation to signal completion or cancellation
1344 GNUNET_TESTBED_operation_done (struct GNUNET_TESTBED_Operation *operation);
1348 * Callback function to process statistic values from all peers.
1350 * @param cls closure
1351 * @param peer the peer the statistic belong to
1352 * @param subsystem name of subsystem that created the statistic
1353 * @param name the name of the datum
1354 * @param value the current value
1355 * @param is_persistent GNUNET_YES if the value is persistent, GNUNET_NO if not
1356 * @return GNUNET_OK to continue, GNUNET_SYSERR to abort iteration
1358 typedef int (*GNUNET_TESTBED_StatisticsIterator) (void *cls,
1359 const struct GNUNET_TESTBED_Peer *peer,
1360 const char *subsystem,
1367 * Convenience method that iterates over all (running) peers
1368 * and retrieves all statistics from each peer.
1370 * @param num_peers number of peers to iterate over
1371 * @param peers array of peers to iterate over
1372 * @param proc processing function for each statistic retrieved
1373 * @param cont continuation to call once call is completed(?)
1374 * @param cls closure to pass to proc and cont
1375 * @return operation handle to cancel the operation
1377 struct GNUNET_TESTBED_Operation *
1378 GNUNET_TESTBED_get_statistics (unsigned int num_peers,
1379 struct GNUNET_TESTBED_Peer **peers,
1380 GNUNET_TESTBED_StatisticsIterator proc,
1381 GNUNET_TESTBED_OperationCompletionCallback cont,
1386 * Signature of a main function for a testcase.
1388 * @param cls closure
1389 * @param num_peers number of peers in 'peers'
1390 * @param peers handle to peers run in the testbed
1392 typedef void (*GNUNET_TESTBED_TestMaster)(void *cls,
1393 unsigned int num_peers,
1394 struct GNUNET_TESTBED_Peer **peers);
1398 * Convenience method for running a testbed with
1399 * a single call. Underlay and overlay topology
1400 * are configured using the "UNDERLAY" and "OVERLAY"
1401 * options in the "[testbed]" section of the configuration\
1402 * (with possible options given in "UNDERLAY_XXX" and/or
1405 * The testbed is to be terminated using a call to
1406 * "GNUNET_SCHEDULER_shutdown".
1408 * @param host_filename name of the file with the 'hosts', NULL
1409 * to run everything on 'localhost'
1410 * @param cfg configuration to use (for testbed, controller and peers)
1411 * @param num_peers number of peers to start; FIXME: maybe put that ALSO into
1412 * cfg?; should be greater than 0
1413 * @param event_mask bit mask with set of events to call 'cc' for;
1414 * or-ed values of "1LL" shifted by the
1415 * respective 'enum GNUNET_TESTBED_EventType'
1416 * (i.e. "(1LL << GNUNET_TESTBED_ET_CONNECT) || ...")
1417 * @param cc controller callback to invoke on events; This callback is called
1418 * for all peer start events even if GNUNET_TESTBED_ET_PEER_START isn't
1419 * set in the event_mask as this is the only way get access to the
1420 * handle of each peer
1421 * @param cc_cls closure for cc
1422 * @param test_master this callback will be called once the test is ready
1423 * @param test_master_cls closure for 'test_master'.
1426 GNUNET_TESTBED_run (const char *host_filename,
1427 const struct GNUNET_CONFIGURATION_Handle *cfg,
1428 unsigned int num_peers,
1429 uint64_t event_mask,
1430 GNUNET_TESTBED_ControllerCallback cc,
1432 GNUNET_TESTBED_TestMaster test_master,
1433 void *test_master_cls);
1437 * Convenience method for running a "simple" test on the local system
1438 * with a single call from 'main'. Underlay and overlay topology are
1439 * configured using the "UNDERLAY" and "OVERLAY" options in the
1440 * "[testbed]" section of the configuration (with possible options
1441 * given in "UNDERLAY_XXX" and/or "OVERLAY_XXX").
1443 * The test is to be terminated using a call to
1444 * "GNUNET_SCHEDULER_shutdown". If starting the test fails,
1445 * the program is stopped without 'master' ever being run.
1447 * NOTE: this function should be called from 'main', NOT from
1448 * within a GNUNET_SCHEDULER-loop. This function will initialze
1449 * the scheduler loop, the testbed and then pass control to
1452 * @param testname name of the testcase (to configure logging, etc.)
1453 * @param cfg_filename configuration filename to use
1454 * (for testbed, controller and peers)
1455 * @param num_peers number of peers to start; should be greter than 0
1456 * @param event_mask bit mask with set of events to call 'cc' for;
1457 * or-ed values of "1LL" shifted by the
1458 * respective 'enum GNUNET_TESTBED_EventType'
1459 * (i.e. "(1LL << GNUNET_TESTBED_ET_CONNECT) || ...")
1460 * @param cc controller callback to invoke on events; This callback is called
1461 * for all peer start events even if GNUNET_TESTBED_ET_PEER_START isn't
1462 * set in the event_mask as this is the only way get access to the
1463 * handle of each peer
1464 * @param cc_cls closure for cc
1465 * @param test_master this callback will be called once the test is ready
1466 * @param test_master_cls closure for 'test_master'.
1467 * @return GNUNET_SYSERR on error, GNUNET_OK on success
1470 GNUNET_TESTBED_test_run (const char *testname,
1471 const char *cfg_filename,
1472 unsigned int num_peers,
1473 uint64_t event_mask,
1474 GNUNET_TESTBED_ControllerCallback cc,
1476 GNUNET_TESTBED_TestMaster test_master,
1477 void *test_master_cls);
1480 #if 0 /* keep Emacsens' auto-indent happy */