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3 (C) 2008--2012 Christian Grothoff (and other contributing authors)
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22 * @file testbed/testbed_api_peers.c
23 * @brief management of the knowledge about peers in this library
24 * (we know the peer ID, its host, pending operations, etc.)
25 * @author Christian Grothoff
28 #include "testbed_api_peers.h"
29 #include "testbed_api.h"
31 #include "testbed_api_hosts.h"
35 * Lookup a peer by ID.
37 * @param id global peer ID assigned to the peer
38 * @return handle to the host, NULL on error
40 struct GNUNET_TESTBED_Peer *
41 GNUNET_TESTBED_peer_lookup_by_id_ (uint32_t id)
49 * Create the given peer at the specified host using the given
50 * controller. If the given controller is not running on the target
51 * host, it should find or create a controller at the target host and
52 * delegate creating the peer. Explicit delegation paths can be setup
53 * using 'GNUNET_TESTBED_controller_link'. If no explicit delegation
54 * path exists, a direct link with a subordinate controller is setup
55 * for the first delegated peer to a particular host; the subordinate
56 * controller is then destroyed once the last peer that was delegated
57 * to the remote host is stopped. This function is used in particular
58 * if some other controller has already assigned a unique ID to the
61 * Creating the peer only creates the handle to manipulate and further
62 * configure the peer; use "GNUNET_TESTBED_peer_start" and
63 * "GNUNET_TESTBED_peer_stop" to actually start/stop the peer's
66 * Note that the given configuration will be adjusted by the
67 * controller to avoid port/path conflicts with other peers.
68 * The "final" configuration can be obtained using
69 * 'GNUNET_TESTBED_peer_get_information'.
71 * @param unique_id unique ID for this peer
72 * @param controller controller process to use
73 * @param host host to run the peer on
74 * @param cfg configuration to use for the peer
75 * @param cb the callback to call when the peer has been created
76 * @param cls the closure to the above callback
77 * @return the operation handle
79 struct GNUNET_TESTBED_Operation *
80 GNUNET_TESTBED_peer_create_with_id_ (uint32_t unique_id,
81 struct GNUNET_TESTBED_Controller *controller,
82 struct GNUNET_TESTBED_Host *host,
83 const struct GNUNET_CONFIGURATION_Handle *cfg,
84 GNUNET_TESTBED_PeerCreateCallback cb,
87 struct GNUNET_TESTBED_Peer *peer;
88 struct PeerCreateData *data;
89 struct GNUNET_TESTBED_Operation *op;
90 struct GNUNET_TESTBED_PeerCreateMessage *msg;
97 peer = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Peer));
98 peer->controller = controller;
100 peer->unique_id = unique_id;
101 data = GNUNET_malloc (sizeof (struct PeerCreateData));
105 op = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Operation));
106 op->operation_id = controller->operation_counter++;
107 op->type = OP_PEER_CREATE;
109 config = GNUNET_CONFIGURATION_serialize (cfg, &c_size);
110 xc_size = GNUNET_TESTBED_compress_config_ (config, c_size, &xconfig);
111 GNUNET_free (config);
112 msize = xc_size + sizeof (struct GNUNET_TESTBED_PeerCreateMessage);
113 msg = GNUNET_realloc (xconfig, msize);
114 memmove (&msg[1], msg, xc_size); /* Move the compressed config */
115 msg->header.size = htons (msize);
116 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_CREATEPEER);
117 msg->operation_id = GNUNET_htonll (op->operation_id);
118 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (peer->host));
119 msg->peer_id = htonl (peer->unique_id);
120 msg->config_size = htonl (c_size);
121 GNUNET_CONTAINER_DLL_insert_tail (peer->controller->op_head,
122 peer->controller->op_tail, op);
123 GNUNET_TESTBED_queue_message_ (controller,
124 (struct GNUNET_MessageHeader *) msg);
130 * Create the given peer at the specified host using the given
131 * controller. If the given controller is not running on the target
132 * host, it should find or create a controller at the target host and
133 * delegate creating the peer. Explicit delegation paths can be setup
134 * using 'GNUNET_TESTBED_controller_link'. If no explicit delegation
135 * path exists, a direct link with a subordinate controller is setup
136 * for the first delegated peer to a particular host; the subordinate
137 * controller is then destroyed once the last peer that was delegated
138 * to the remote host is stopped.
140 * Creating the peer only creates the handle to manipulate and further
141 * configure the peer; use "GNUNET_TESTBED_peer_start" and
142 * "GNUNET_TESTBED_peer_stop" to actually start/stop the peer's
145 * Note that the given configuration will be adjusted by the
146 * controller to avoid port/path conflicts with other peers.
147 * The "final" configuration can be obtained using
148 * 'GNUNET_TESTBED_peer_get_information'.
150 * @param controller controller process to use
151 * @param host host to run the peer on
152 * @param cfg configuration to use for the peer
153 * @param cb the callback to call when the peer has been created
154 * @param cls the closure to the above callback
155 * @return the operation handle
157 struct GNUNET_TESTBED_Operation *
158 GNUNET_TESTBED_peer_create (struct GNUNET_TESTBED_Controller *controller,
159 struct GNUNET_TESTBED_Host *host,
160 const struct GNUNET_CONFIGURATION_Handle *cfg,
161 GNUNET_TESTBED_PeerCreateCallback cb,
164 static uint32_t id_gen;
166 return GNUNET_TESTBED_peer_create_with_id_ (++id_gen,
175 * Start the given peer.
177 * @param peer peer to start
178 * @return handle to the operation
180 struct GNUNET_TESTBED_Operation *
181 GNUNET_TESTBED_peer_start (struct GNUNET_TESTBED_Peer *peer)
183 struct GNUNET_TESTBED_Operation *op;
184 struct GNUNET_TESTBED_PeerStartMessage *msg;
186 op = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Operation));
187 op->operation_id = peer->controller->operation_counter++;
188 op->type = OP_PEER_START;
190 msg = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_PeerStartMessage));
191 msg->header.size = htons (sizeof (struct GNUNET_TESTBED_PeerStartMessage));
192 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_STARTPEER);
193 msg->peer_id = htonl (peer->unique_id);
194 msg->operation_id = GNUNET_htonll (op->operation_id);
195 GNUNET_CONTAINER_DLL_insert_tail (peer->controller->op_head,
196 peer->controller->op_tail, op);
197 GNUNET_TESTBED_queue_message_ (peer->controller, &msg->header);
203 * Stop the given peer. The handle remains valid (use
204 * "GNUNET_TESTBED_peer_destroy" to fully clean up the
205 * state of the peer).
207 * @param peer peer to stop
208 * @return handle to the operation
210 struct GNUNET_TESTBED_Operation *
211 GNUNET_TESTBED_peer_stop (struct GNUNET_TESTBED_Peer *peer)
213 struct GNUNET_TESTBED_Operation *op;
214 struct GNUNET_TESTBED_PeerStopMessage *msg;
216 op = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Operation));
217 op->operation_id = peer->controller->operation_counter++;
218 op->type = OP_PEER_STOP;
220 msg = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_PeerStopMessage));
221 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_STOPPEER);
222 msg->header.size = htons (sizeof (struct GNUNET_TESTBED_PeerStopMessage));
223 msg->peer_id = htonl (peer->unique_id);
224 msg->operation_id = GNUNET_htonll (op->operation_id);
225 GNUNET_CONTAINER_DLL_insert_tail (peer->controller->op_head,
226 peer->controller->op_tail, op);
227 GNUNET_TESTBED_queue_message_ (peer->controller, &msg->header);
233 * Request information about a peer.
235 * @param peer peer to request information about
236 * @param pit desired information
237 * @return handle to the operation
239 struct GNUNET_TESTBED_Operation *
240 GNUNET_TESTBED_peer_get_information (struct GNUNET_TESTBED_Peer *peer,
241 enum GNUNET_TESTBED_PeerInformationType pit)
243 // FIXME: handle locally or delegate...
250 * Change peer configuration. Must only be called while the
251 * peer is stopped. Ports and paths cannot be changed this
254 * @param peer peer to change configuration for
255 * @param cfg new configuration (differences to existing
256 * configuration only)
257 * @return handle to the operation
259 struct GNUNET_TESTBED_Operation *
260 GNUNET_TESTBED_peer_update_configuration (struct GNUNET_TESTBED_Peer *peer,
261 const struct GNUNET_CONFIGURATION_Handle *cfg)
263 // FIXME: handle locally or delegate...
270 * Destroy the given peer; the peer should have been
271 * stopped first (if it was started).
273 * @param peer peer to stop
274 * @return handle to the operation
276 struct GNUNET_TESTBED_Operation *
277 GNUNET_TESTBED_peer_destroy (struct GNUNET_TESTBED_Peer *peer)
279 struct GNUNET_TESTBED_Operation *op;
280 struct PeerDestroyData *data;
281 struct GNUNET_TESTBED_PeerDestroyMessage *msg;
283 data = GNUNET_malloc (sizeof (struct PeerDestroyData));
285 op = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Operation));
286 op->operation_id = peer->controller->operation_counter++;
287 op->type = OP_PEER_DESTROY;
289 msg = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_PeerDestroyMessage));
290 msg->header.size = htons (sizeof (struct GNUNET_TESTBED_PeerDestroyMessage));
291 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_DESTROYPEER);
292 msg->peer_id = htonl (peer->unique_id);
293 msg->operation_id = GNUNET_htonll (op->operation_id);
294 GNUNET_CONTAINER_DLL_insert_tail (peer->controller->op_head,
295 peer->controller->op_tail, op);
296 GNUNET_TESTBED_queue_message_ (peer->controller,
297 (struct GNUNET_MessageHeader *) msg);
303 * Manipulate the P2P underlay topology by configuring a link
306 * @param op_cls closure argument to give with the operation event
307 * @param p1 first peer
308 * @param p2 second peer
309 * @param co option to change
310 * @param ... option-specific values
311 * @return handle to the operation, NULL if configuring the link at this
312 * time is not allowed
314 struct GNUNET_TESTBED_Operation *
315 GNUNET_TESTBED_underlay_configure_link (void *op_cls,
316 struct GNUNET_TESTBED_Peer *p1,
317 struct GNUNET_TESTBED_Peer *p2,
318 enum GNUNET_TESTBED_ConnectOption co, ...)
327 * Both peers must have been started before calling this function.
328 * This function then obtains a HELLO from 'p1', gives it to 'p2'
329 * and asks 'p2' to connect to 'p1'.
331 * @param op_cls closure argument to give with the operation event
332 * @param p1 first peer
333 * @param p2 second peer
334 * @return handle to the operation, NULL if connecting these two
335 * peers is fundamentally not possible at this time (peers
336 * not running or underlay disallows)
338 struct GNUNET_TESTBED_Operation *
339 GNUNET_TESTBED_overlay_connect (void *op_cls,
340 struct GNUNET_TESTBED_Peer *p1,
341 struct GNUNET_TESTBED_Peer *p2)
349 /* end of testbed_api_peers.c */