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3 (C) 2008--2013 Christian Grothoff (and other contributing authors)
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22 * @file testbed/gnunet-service-testbed.h
23 * @brief data structures shared amongst components of TESTBED service
24 * @author Sree Harsha Totakura
28 #include "gnunet_util_lib.h"
29 #include "gnunet_testbed_service.h"
30 #include "gnunet_transport_service.h"
31 #include "gnunet_core_service.h"
34 #include "testbed_api.h"
35 #include "testbed_api_operations.h"
36 #include "testbed_api_hosts.h"
37 #include "gnunet_testing_lib.h"
38 #include "gnunet-service-testbed_links.h"
44 #define LOG(kind,...) \
45 GNUNET_log (kind, __VA_ARGS__)
50 #define LOG_DEBUG(...) \
51 LOG (GNUNET_ERROR_TYPE_DEBUG, __VA_ARGS__)
54 * By how much should the arrays lists grow
56 #define LIST_GROW_STEP 10
70 * The destination host is reachable thru
77 * Context information for operations forwarded to subcontrollers
79 struct ForwardedOperationContext
82 * The next pointer for DLL
84 struct ForwardedOperationContext *next;
87 * The prev pointer for DLL
89 struct ForwardedOperationContext *prev;
92 * The generated operation context
94 struct OperationContext *opc;
97 * The client to which we have to reply
99 struct GNUNET_SERVER_Client *client;
107 * Task ID for the timeout task
109 GNUNET_SCHEDULER_TaskIdentifier timeout_task;
112 * The id of the operation that has been forwarded
114 uint64_t operation_id;
117 * The type of the operation which is forwarded
119 enum OperationType type;
125 * A DLL of host registrations to be made
127 struct HostRegistration
130 * next registration in the DLL
132 struct HostRegistration *next;
135 * previous registration in the DLL
137 struct HostRegistration *prev;
140 * The callback to call after this registration's status is available
142 GNUNET_TESTBED_HostRegistrationCompletion cb;
145 * The closure for the above callback
150 * The host that has to be registered
152 struct GNUNET_TESTBED_Host *host;
157 * Context information used while linking controllers
159 struct LinkControllersContext
162 * The client which initiated the link controller operation
164 struct GNUNET_SERVER_Client *client;
167 * The ID of the operation
169 uint64_t operation_id;
186 * The peer handle from testing API
188 struct GNUNET_TESTING_Peer *peer;
191 * The modified (by GNUNET_TESTING_peer_configure) configuration this
192 * peer is configured with
194 struct GNUNET_CONFIGURATION_Handle *cfg;
197 * Is the peer running
206 * The slave this peer is started through
211 * The id of the remote host this peer is running on
213 uint32_t remote_host_id;
220 * Is this peer locally created?
225 * Our local reference id for this peer
230 * References to peers are using in forwarded overlay contexts and remote
231 * overlay connect contexts. A peer can only be destroyed after all such
232 * contexts are destroyed. For this, we maintain a reference counter. When we
233 * use a peer in any such context, we increment this counter. We decrement it
234 * when we are destroying these contexts
236 uint32_t reference_cnt;
239 * While destroying a peer, due to the fact that there could be references to
240 * this peer, we delay the peer destroy to a further time. We do this by using
241 * this flag to destroy the peer while destroying a context in which this peer
242 * has been used. When the flag is set to 1 and reference_cnt = 0 we destroy
245 uint32_t destroy_flag;
251 * The main context information associated with the client which started us
256 * The client handle associated with this context
258 struct GNUNET_SERVER_Client *client;
261 * The network address of the master controller
266 * The TESTING system handle for starting peers locally
268 struct GNUNET_TESTING_System *system;
271 * Our host id according to this context
278 * The structure for identifying a shared service
283 * The name of the shared service
288 * Number of shared peers per instance of the shared service
293 * Number of peers currently sharing the service
295 uint32_t num_sharing;
300 * Context information to used during operations which forward the overlay
303 struct ForwardedOverlayConnectContext
306 * next ForwardedOverlayConnectContext in the DLL
308 struct ForwardedOverlayConnectContext *next;
311 * previous ForwardedOverlayConnectContext in the DLL
313 struct ForwardedOverlayConnectContext *prev;
316 * A copy of the original overlay connect message
318 struct GNUNET_MessageHeader *orig_msg;
323 struct GNUNET_SERVER_Client *client;
326 * The id of the operation which created this context information
328 uint64_t operation_id;
341 * Id of the host where peer2 is running
343 uint32_t peer2_host_id;
348 * This context information will be created for each host that is registered at
349 * slave controllers during overlay connects.
351 struct RegisteredHostContext
354 * The host which is being registered
356 struct GNUNET_TESTBED_Host *reg_host;
359 * The host of the controller which has to connect to the above rhost
361 struct GNUNET_TESTBED_Host *host;
364 * Head of the ForwardedOverlayConnectContext DLL
366 struct ForwardedOverlayConnectContext *focc_dll_head;
369 * Tail of the ForwardedOverlayConnectContext DLL
371 struct ForwardedOverlayConnectContext *focc_dll_tail;
374 * Enumeration of states for this context
385 * State where we attempt to do the overlay connection again
394 * Context data for GNUNET_MESSAGE_TYPE_TESTBED_SHUTDOWN_PEERS handler
396 struct HandlerContext_ShutdownPeers
399 * The number of slave we expect to hear from since we forwarded the
400 * GNUNET_MESSAGE_TYPE_TESTBED_SHUTDOWN_PEERS message to them
402 unsigned int nslaves;
405 * Did we observe a timeout with respect to this operation at any of the
415 extern struct GNUNET_CONFIGURATION_Handle *GST_config;
418 * The master context; generated with the first INIT message
420 extern struct Context *GST_context;
423 * DLL head for forwarded operation contexts
425 extern struct ForwardedOperationContext *fopcq_head;
428 * DLL tail for forwarded operation contexts
430 extern struct ForwardedOperationContext *fopcq_tail;
433 * A list of peers we know about
435 extern struct Peer **GST_peer_list;
440 extern struct GNUNET_TESTBED_Host **GST_host_list;
443 * Operation queue for open file descriptors
445 extern struct OperationQueue *GST_opq_openfds;
448 * Timeout for operations which may take some time
450 const extern struct GNUNET_TIME_Relative GST_timeout;
453 * The size of the peer list
455 extern unsigned int GST_peer_list_size;
458 * The current number of peers running locally under this controller
460 extern unsigned int GST_num_local_peers;
463 * The size of the host list
465 extern unsigned int GST_host_list_size;
468 * The directory where to store load statistics data
470 extern char *GST_stats_dir;
473 * Condition to check if host id is valid
475 #define VALID_HOST_ID(id) \
476 ( ((id) < GST_host_list_size) && (NULL != GST_host_list[id]) )
479 * Condition to check if peer id is valid
481 #define VALID_PEER_ID(id) \
482 ( ((id) < GST_peer_list_size) && (NULL != GST_peer_list[id]) )
486 * Similar to GNUNET_array_grow(); however instead of calling GNUNET_array_grow()
487 * several times we call it only once. The array is also made to grow in steps
490 * @param ptr the array pointer to grow
491 * @param size the size of array
492 * @param accommodate_size the size which the array has to accommdate; after
493 * this call the array will be big enough to accommdate sizes upto
496 #define GST_array_grow_large_enough(ptr, size, accommodate_size) \
499 unsigned int growth_size; \
500 GNUNET_assert (size <= accommodate_size); \
501 growth_size = size; \
502 while (growth_size <= accommodate_size) \
503 growth_size += LIST_GROW_STEP; \
504 GNUNET_array_grow (ptr, size, growth_size); \
505 GNUNET_assert (size > accommodate_size); \
510 * Queues a message in send queue for sending to the service
512 * @param client the client to whom the queued message has to be sent
513 * @param msg the message to queue
516 GST_queue_message (struct GNUNET_SERVER_Client *client,
517 struct GNUNET_MessageHeader *msg);
521 * Function to destroy a peer
523 * @param peer the peer structure to destroy
526 GST_destroy_peer (struct Peer *peer);
530 * Stops and destroys all peers
533 GST_destroy_peers ();
537 * Finds the route with directly connected host as destination through which
538 * the destination host can be reached
540 * @param host_id the id of the destination host
541 * @return the route with directly connected destination host; NULL if no route
545 GST_find_dest_route (uint32_t host_id);
549 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_OLCONNECT messages
552 * @param client identification of the client
553 * @param message the actual message
556 GST_handle_overlay_connect (void *cls, struct GNUNET_SERVER_Client *client,
557 const struct GNUNET_MessageHeader *message);
561 * Adds a host registration's request to a slave's registration queue
563 * @param slave the slave controller at which the given host has to be
565 * @param cb the host registration completion callback
566 * @param cb_cls the closure for the host registration completion callback
567 * @param host the host which has to be registered
570 GST_queue_host_registration (struct Slave *slave,
571 GNUNET_TESTBED_HostRegistrationCompletion cb,
572 void *cb_cls, struct GNUNET_TESTBED_Host *host);
576 * Callback to relay the reply msg of a forwarded operation back to the client
578 * @param cls ForwardedOperationContext
579 * @param msg the message to relay
582 GST_forwarded_operation_reply_relay (void *cls,
583 const struct GNUNET_MessageHeader *msg);
587 * Task to free resources when forwarded operation has been timedout
589 * @param cls the ForwardedOperationContext
590 * @param tc the task context from scheduler
593 GST_forwarded_operation_timeout (void *cls,
594 const struct GNUNET_SCHEDULER_TaskContext *tc);
598 * Clears the forwarded operations queue
605 * Send operation failure message to client
607 * @param client the client to which the failure message has to be sent to
608 * @param operation_id the id of the failed operation
609 * @param emsg the error message; can be NULL
612 GST_send_operation_fail_msg (struct GNUNET_SERVER_Client *client,
613 uint64_t operation_id, const char *emsg);
617 * Function to send generic operation success message to given client
619 * @param client the client to send the message to
620 * @param operation_id the id of the operation which was successful
623 GST_send_operation_success_msg (struct GNUNET_SERVER_Client *client,
624 uint64_t operation_id);
628 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_REQUESTCONNECT messages
631 * @param client identification of the client
632 * @param message the actual message
635 GST_handle_remote_overlay_connect (void *cls,
636 struct GNUNET_SERVER_Client *client,
637 const struct GNUNET_MessageHeader *message);
641 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_CREATEPEER messages
644 * @param client identification of the client
645 * @param message the actual message
648 GST_handle_peer_create (void *cls, struct GNUNET_SERVER_Client *client,
649 const struct GNUNET_MessageHeader *message);
653 * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_DESTROYPEER messages
656 * @param client identification of the client
657 * @param message the actual message
660 GST_handle_peer_destroy (void *cls, struct GNUNET_SERVER_Client *client,
661 const struct GNUNET_MessageHeader *message);
665 * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_DESTROYPEER messages
668 * @param client identification of the client
669 * @param message the actual message
672 GST_handle_peer_start (void *cls, struct GNUNET_SERVER_Client *client,
673 const struct GNUNET_MessageHeader *message);
677 * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_DESTROYPEER messages
680 * @param client identification of the client
681 * @param message the actual message
684 GST_handle_peer_stop (void *cls, struct GNUNET_SERVER_Client *client,
685 const struct GNUNET_MessageHeader *message);
689 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_GETPEERCONFIG messages
692 * @param client identification of the client
693 * @param message the actual message
696 GST_handle_peer_get_config (void *cls, struct GNUNET_SERVER_Client *client,
697 const struct GNUNET_MessageHeader *message);
701 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_SHUTDOWN_PEERS messages
704 * @param client identification of the client
705 * @param message the actual message
708 GST_handle_shutdown_peers (void *cls, struct GNUNET_SERVER_Client *client,
709 const struct GNUNET_MessageHeader *message);
713 * Handler for GNUNET_TESTBED_ManagePeerServiceMessage message
716 * @param client identification of client
717 * @param message the actual message
720 GST_handle_manage_peer_service (void *cls, struct GNUNET_SERVER_Client *client,
721 const struct GNUNET_MessageHeader *message);
725 * Handler for GNUNET_MESSAGE_TYPDE_TESTBED_RECONFIGURE_PEER type messages.
726 * Should stop the peer asyncronously, destroy it and create it again with the
730 * @param client identification of the client
731 * @param message the actual message
734 GST_handle_peer_reconfigure (void *cls, struct GNUNET_SERVER_Client *client,
735 const struct GNUNET_MessageHeader *message);
739 * Frees the ManageServiceContext queue
746 * Cleans up the queue used for forwarding link controllers requests
753 * Cleans up the route list
756 GST_route_list_clear ();
760 * Processes a forwarded overlay connect context in the queue of the given RegisteredHostContext
762 * @param rhc the RegisteredHostContext
765 GST_process_next_focc (struct RegisteredHostContext *rhc);
769 * Cleans up ForwardedOverlayConnectContext
771 * @param focc the ForwardedOverlayConnectContext to cleanup
774 GST_cleanup_focc (struct ForwardedOverlayConnectContext *focc);
778 * Clears all pending overlay connect contexts in queue
785 * Clears all pending remote overlay connect contexts in queue
792 * Cleans up the Peer reconfigure context list
799 * Initializes the cache
801 * @param size the size of the cache
804 GST_cache_init (unsigned int size);
815 * Looks up in the hello cache and returns the HELLO of the given peer
817 * @param peer_id the index of the peer whose HELLO has to be looked up
818 * @return the HELLO message; NULL if not found
820 const struct GNUNET_MessageHeader *
821 GST_cache_lookup_hello (const unsigned int peer_id);
825 * Caches the HELLO of the given peer. Updates the HELLO if it was already
828 * @param peer_id the peer identity of the peer whose HELLO has to be cached
829 * @param hello the HELLO message
832 GST_cache_add_hello (const unsigned int peer_id,
833 const struct GNUNET_MessageHeader *hello);
837 * Initialize logging CPU and IO statisticfs. Checks the configuration for
838 * "STATS_DIR" and logs to a file in that directory. The file is name is
839 * generated from the hostname and the process's PID.
842 GST_stats_init (const struct GNUNET_CONFIGURATION_Handle *cfg);
846 * Shutdown the status calls module.
849 GST_stats_destroy ();
851 /* End of gnunet-service-testbed.h */