GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 2, or (at your
+ by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
#define GNUNET_TESTING_LIB_H
#include "gnunet_util_lib.h"
+#include "gnunet_statistics_service.h"
#ifdef __cplusplus
extern "C"
#endif
#endif
-
+#define HOSTKEYFILESIZE 914
/**
* Handle for a GNUnet daemon (technically a set of
*/
struct GNUNET_TESTING_Daemon;
+/**
+ * Linked list of hostnames and ports to use for starting daemons.
+ */
+struct GNUNET_TESTING_Host
+{
+ /**
+ * Pointer to next item in the list.
+ */
+ struct GNUNET_TESTING_Host *next;
+
+ /**
+ * Hostname to connect to.
+ */
+ char *hostname;
+
+ /**
+ * Username to use when connecting (may be null).
+ */
+ char *username;
+
+ /**
+ * Port to use for SSH connection (used for ssh
+ * connection forwarding, 0 to let ssh decide)
+ */
+ uint16_t port;
+};
+
+/**
+ * Prototype of a function that will be called whenever
+ * a daemon was started by the testing library.
+ *
+ * @param cls closure
+ * @param id identifier for the daemon, NULL on error
+ * @param d handle for the daemon
+ * @param emsg error message (NULL on success)
+ */
+typedef void (*GNUNET_TESTING_NotifyHostkeyCreated)(void *cls,
+ const struct GNUNET_PeerIdentity *id,
+ struct GNUNET_TESTING_Daemon *d,
+ const char *emsg);
/**
* Prototype of a function that will be called whenever
const char *emsg);
+/**
+ * Handle to an entire testbed of GNUnet peers.
+ */
+struct GNUNET_TESTING_Testbed;
+
+/**
+ * Phases of starting GNUnet on a system.
+ */
+enum GNUNET_TESTING_StartPhase
+{
+ /**
+ * Copy the configuration file to the target system.
+ */
+ SP_COPYING,
+
+ /**
+ * Configuration file has been copied, generate hostkey.
+ */
+ SP_COPIED,
+
+ /**
+ * Create the hostkey for the peer.
+ */
+ SP_HOSTKEY_CREATE,
+
+ /**
+ * Hostkey generated, wait for topology to be finished.
+ */
+ SP_HOSTKEY_CREATED,
+
+ /**
+ * Topology has been created, now start ARM.
+ */
+ SP_TOPOLOGY_SETUP,
+
+ /**
+ * ARM has been started, check that it has properly daemonized and
+ * then try to connect to the CORE service (which should be
+ * auto-started by ARM).
+ */
+ SP_START_ARMING,
+
+ /**
+ * We're waiting for CORE to start.
+ */
+ SP_START_CORE,
+
+ /**
+ * CORE is up, now make sure we get the HELLO for this peer.
+ */
+ SP_GET_HELLO,
+
+ /**
+ * Core has notified us that we've established a connection to the service.
+ * The main FSM halts here and waits to be moved to UPDATE or CLEANUP.
+ */
+ SP_START_DONE,
+
+ /**
+ * We've been asked to terminate the instance and are now waiting for
+ * the remote command to stop the gnunet-arm process and delete temporary
+ * files.
+ */
+ SP_SHUTDOWN_START,
+
+ /**
+ * We've received a configuration update and are currently waiting for
+ * the copy process for the update to complete. Once it is, we will
+ * return to "SP_START_DONE" (and rely on ARM to restart all affected
+ * services).
+ */
+ SP_CONFIG_UPDATE
+};
+
+/**
+ * Prototype of a function that will be called when a
+ * particular operation was completed the testing library.
+ *
+ * @param cls closure
+ * @param emsg NULL on success
+ */
+typedef void (*GNUNET_TESTING_NotifyCompletion)(void *cls,
+ const char *emsg);
+
+/**
+ * Prototype of a function that will be called with the
+ * number of connections created for a particular topology.
+ *
+ * @param cls closure
+ * @param num_connections the number of connections created
+ */
+typedef void (*GNUNET_TESTING_NotifyConnections)(void *cls,
+ unsigned int num_connections);
+
+/**
+ * Handle for a GNUnet daemon (technically a set of
+ * daemons; the handle is really for the master ARM
+ * daemon) started by the testing library.
+ */
+struct GNUNET_TESTING_Daemon
+{
+ /**
+ * Our configuration.
+ */
+ struct GNUNET_CONFIGURATION_Handle *cfg;
+
+ /**
+ * At what time to give up starting the peer
+ */
+ struct GNUNET_TIME_Absolute max_timeout;
+
+ /**
+ * Host to run GNUnet on.
+ */
+ char *hostname;
+
+ /**
+ * Port to use for ssh, NULL to let system choose default.
+ */
+ char *ssh_port_str;
+
+ /**
+ * Result of GNUNET_i2s of this peer,
+ * for printing
+ */
+ char *shortname;
+
+ /**
+ * Username we are using.
+ */
+ char *username;
+
+ /**
+ * Name of the configuration file
+ */
+ char *cfgfile;
+
+ /**
+ * Callback to inform initiator that the peer's
+ * hostkey has been created.
+ */
+ GNUNET_TESTING_NotifyHostkeyCreated hostkey_callback;
+
+ /**
+ * Closure for hostkey creation callback.
+ */
+ void *hostkey_cls;
+
+ /**
+ * Function to call when the peer is running.
+ */
+ GNUNET_TESTING_NotifyDaemonRunning cb;
+
+ /**
+ * Closure for cb.
+ */
+ void *cb_cls;
+
+ /**
+ * Arguments from "daemon_stop" call.
+ */
+ GNUNET_TESTING_NotifyCompletion dead_cb;
+
+ /**
+ * Closure for 'dead_cb'.
+ */
+ void *dead_cb_cls;
+
+ /**
+ * Arguments from "daemon_stop" call.
+ */
+ GNUNET_TESTING_NotifyCompletion update_cb;
+
+ /**
+ * Closure for 'update_cb'.
+ */
+ void *update_cb_cls;
+
+ /**
+ * Identity of this peer (once started).
+ */
+ struct GNUNET_PeerIdentity id;
+
+ /**
+ * Flag to indicate that we've already been asked
+ * to terminate (but could not because some action
+ * was still pending).
+ */
+ int dead;
+
+ /**
+ * GNUNET_YES if the hostkey has been created
+ * for this peer, GNUNET_NO otherwise.
+ */
+ int have_hostkey;
+
+ /**
+ * PID of the process that we started last.
+ */
+ struct GNUNET_OS_Process *proc;
+
+ /**
+ * In which phase are we during the start of
+ * this process?
+ */
+ enum GNUNET_TESTING_StartPhase phase;
+
+ /**
+ * ID of the current task.
+ */
+ GNUNET_SCHEDULER_TaskIdentifier task;
+
+ /**
+ * Handle to the server.
+ */
+ struct GNUNET_CORE_Handle *server;
+
+ /**
+ * Handle to the transport service of this peer
+ */
+ struct GNUNET_TRANSPORT_Handle *th;
+
+ /**
+ * HELLO message for this peer
+ */
+ struct GNUNET_HELLO_Message *hello;
+
+ /**
+ * Handle to a pipe for reading the hostkey.
+ */
+ struct GNUNET_DISK_PipeHandle *pipe_stdout;
+
+ /**
+ * Output from gnunet-peerinfo is read into this buffer.
+ */
+ char hostkeybuf[105];
+
+ /**
+ * Current position in 'hostkeybuf' (for reading from gnunet-peerinfo)
+ */
+ unsigned int hostkeybufpos;
+
+ /**
+ * Set to GNUNET_YES once the peer is up.
+ */
+ int running;
+
+ /**
+ * Used to tell shutdown not to remove configuration for the peer
+ * (if it's going to be restarted later)
+ */
+ int churn;
+};
+
+
+/**
+ * Handle to a group of GNUnet peers.
+ */
+struct GNUNET_TESTING_PeerGroup;
+
+
+/**
+ * Prototype of a function that will be called whenever
+ * two daemons are connected by the testing library.
+ *
+ * @param cls closure
+ * @param first peer id for first daemon
+ * @param second peer id for the second daemon
+ * @param distance distance between the connected peers
+ * @param first_cfg config for the first daemon
+ * @param second_cfg config for the second daemon
+ * @param first_daemon handle for the first daemon
+ * @param second_daemon handle for the second daemon
+ * @param emsg error message (NULL on success)
+ */
+typedef void (*GNUNET_TESTING_NotifyConnection)(void *cls,
+ const struct GNUNET_PeerIdentity *first,
+ const struct GNUNET_PeerIdentity *second,
+ uint32_t distance,
+ const struct GNUNET_CONFIGURATION_Handle *first_cfg,
+ const struct GNUNET_CONFIGURATION_Handle *second_cfg,
+ struct GNUNET_TESTING_Daemon *first_daemon,
+ struct GNUNET_TESTING_Daemon *second_daemon,
+ const char *emsg);
+
+/**
+ * Prototype of a callback function indicating that two peers
+ * are currently connected.
+ *
+ * @param cls closure
+ * @param first peer id for first daemon
+ * @param second peer id for the second daemon
+ * @param distance distance between the connected peers
+ * @param emsg error message (NULL on success)
+ */
+typedef void (*GNUNET_TESTING_NotifyTopology)(void *cls,
+ const struct GNUNET_PeerIdentity *first,
+ const struct GNUNET_PeerIdentity *second,
+ const char *emsg);
+
/**
* Starts a GNUnet daemon. GNUnet must be installed on the target
* system and available in the PATH. The machine must furthermore be
* reachable via "ssh" (unless the hostname is "NULL") without the
* need to enter a password.
*
- * @param sched scheduler to use
* @param cfg configuration to use
+ * @param timeout how long to wait starting up peers
+ * @param pretend GNUNET_YES to set up files but not start peer GNUNET_NO
+ * to really start the peer (default)
* @param hostname name of the machine where to run GNUnet
* (use NULL for localhost).
- * @param cb function to call with the result
+ * @param ssh_username ssh username to use when connecting to hostname
+ * @param sshport port to pass to ssh process when connecting to hostname
+ * @param hostkey pointer to a hostkey to be written to disk (instead of being generated)
+ * @param hostkey_callback function to call once the hostkey has been
+ * generated for this peer, but it hasn't yet been started
+ * (NULL to start immediately, otherwise waits on GNUNET_TESTING_daemon_continue_start)
+ * @param hostkey_cls closure for hostkey callback
+ * @param cb function to call once peer is up, or failed to start
* @param cb_cls closure for cb
* @return handle to the daemon (actual start will be completed asynchronously)
*/
struct GNUNET_TESTING_Daemon *
-GNUNET_TESTING_daemon_start (struct GNUNET_SCHEDULER_Handle *sched,
- struct GNUNET_CONFIGURATION_Handle *cfg,
- const char *hostname,
- GNUNET_TESTING_NotifyDaemonRunning cb,
- void *cb_cls);
+GNUNET_TESTING_daemon_start (const struct GNUNET_CONFIGURATION_Handle *cfg,
+ struct GNUNET_TIME_Relative timeout,
+ int pretend,
+ const char *hostname,
+ const char *ssh_username,
+ uint16_t sshport,
+ const char *hostkey,
+ GNUNET_TESTING_NotifyHostkeyCreated
+ hostkey_callback, void *hostkey_cls,
+ GNUNET_TESTING_NotifyDaemonRunning cb,
+ void *cb_cls);
+/**
+ * Continues GNUnet daemon startup when user wanted to be notified
+ * once a hostkey was generated (for creating friends files, blacklists,
+ * etc.).
+ *
+ * @param daemon the daemon to finish starting
+ */
+void
+GNUNET_TESTING_daemon_continue_startup(struct GNUNET_TESTING_Daemon *daemon);
/**
- * Prototype of a function that will be called when a
- * particular operation was completed the testing library.
+ * Check whether the given daemon is running.
*
- * @param cls closure
- * @param emsg NULL on success
+ * @param daemon the daemon to check
+ *
+ * @return GNUNET_YES if the daemon is up, GNUNET_NO if the
+ * daemon is down, GNUNET_SYSERR on error.
*/
-typedef void (*GNUNET_TESTING_NotifyCompletion)(void *cls,
- const char *emsg);
+int
+GNUNET_TESTING_daemon_running (struct GNUNET_TESTING_Daemon *daemon);
+/**
+ * Restart (stop and start) a GNUnet daemon.
+ *
+ * @param d the daemon that should be restarted
+ * @param cb function called once the daemon is (re)started
+ * @param cb_cls closure for cb
+ */
+void
+GNUNET_TESTING_daemon_restart (struct GNUNET_TESTING_Daemon *d,
+ GNUNET_TESTING_NotifyDaemonRunning cb, void *cb_cls);
+
+/**
+ * Start a peer that has previously been stopped using the daemon_stop
+ * call (and files weren't deleted and the allow restart flag)
+ *
+ * @param daemon the daemon to start (has been previously stopped)
+ * @param timeout how long to wait for restart
+ * @param cb the callback for notification when the peer is running
+ * @param cb_cls closure for the callback
+ */
+void
+GNUNET_TESTING_daemon_start_stopped (struct GNUNET_TESTING_Daemon *daemon,
+ struct GNUNET_TIME_Relative timeout,
+ GNUNET_TESTING_NotifyDaemonRunning cb,
+ void *cb_cls);
+
+/**
+ * Get a certain testing daemon handle.
+ *
+ * @param pg handle to the set of running peers
+ * @param position the number of the peer to return
+ */
+struct GNUNET_TESTING_Daemon *
+GNUNET_TESTING_daemon_get (struct GNUNET_TESTING_PeerGroup *pg,
+ unsigned int position);
+
+/*
+ * Get a daemon by peer identity, so callers can
+ * retrieve the daemon without knowing it's offset.
+ *
+ * @param pg the peer group to retrieve the daemon from
+ * @param peer_id the peer identity of the daemon to retrieve
+ *
+ * @return the daemon on success, or NULL if no such peer identity is found
+ */
+struct GNUNET_TESTING_Daemon *
+GNUNET_TESTING_daemon_get_by_id (struct GNUNET_TESTING_PeerGroup *pg,
+ struct GNUNET_PeerIdentity *peer_id);
/**
* Stops a GNUnet daemon.
*
* @param d the daemon that should be stopped
+ * @param timeout how long to wait for process for shutdown to complete
* @param cb function called once the daemon was stopped
* @param cb_cls closure for cb
+ * @param delete_files GNUNET_YES to remove files, GNUNET_NO
+ * to leave them (i.e. for restarting at a later time,
+ * or logfile inspection once finished)
+ * @param allow_restart GNUNET_YES to restart peer later (using this API)
+ * GNUNET_NO to kill off and clean up for good
*/
-void GNUNET_TESTING_daemon_stop (struct GNUNET_TESTING_Daemon *d,
- GNUNET_TESTING_NotifyCompletion cb,
- void * cb_cls);
+void
+GNUNET_TESTING_daemon_stop (struct GNUNET_TESTING_Daemon *d,
+ struct GNUNET_TIME_Relative timeout,
+ GNUNET_TESTING_NotifyCompletion cb, void *cb_cls,
+ int delete_files, int allow_restart);
/**
* @param cb_cls closure for cb
*/
void GNUNET_TESTING_daemon_reconfigure (struct GNUNET_TESTING_Daemon *d,
- const struct GNUNET_CONFIGURATION_Handle *cfg,
+ struct GNUNET_CONFIGURATION_Handle *cfg,
GNUNET_TESTING_NotifyCompletion cb,
void * cb_cls);
* @param d2 handle for the second daemon
* @param timeout how long is the connection attempt
* allowed to take?
+ * @param max_connect_attempts how many times should we try to reconnect
+ * (within timeout)
+ * @param send_hello GNUNET_YES to send the HELLO, GNUNET_NO to assume
+ * the HELLO has already been exchanged
* @param cb function to call at the end
* @param cb_cls closure for cb
*/
-void GNUNET_TESTING_daemons_connect (struct GNUNET_TESTING_Daemon *d1,
- struct GNUNET_TESTING_Daemon *d2,
- struct GNUNET_TIME_Relative timeout,
- GNUNET_TESTING_NotifyCompletion cb,
- void *cb_cls);
+void
+GNUNET_TESTING_daemons_connect (struct GNUNET_TESTING_Daemon *d1,
+ struct GNUNET_TESTING_Daemon *d2,
+ struct GNUNET_TIME_Relative timeout,
+ unsigned int max_connect_attempts,
+ int send_hello,
+ GNUNET_TESTING_NotifyConnection cb,
+ void *cb_cls);
-/**
- * Handle to a group of GNUnet peers.
- */
-struct GNUNET_TESTING_PeerGroup;
-
/**
- * Start count gnunetd processes with the same set of transports and
+ * Start count gnunet instances with the same set of transports and
* applications. The port numbers (any option called "PORT") will be
* adjusted to ensure that no two peers running on the same system
* have the same port(s) in their respective configurations.
*
- * @param sched scheduler to use
* @param cfg configuration template to use
* @param total number of daemons to start
+ * @param max_concurrent_connections for testing, how many peers can
+* we connect to simultaneously
+ * @param max_concurrent_ssh when starting with ssh, how many ssh
+ * connections will we allow at once (based on remote hosts allowed!)
+ * @param timeout total time allowed for peers to start
+ * @param hostkey_callback function to call on each peers hostkey generation
+ * if NULL, peers will be started by this call, if non-null,
+ * GNUNET_TESTING_daemons_continue_startup must be called after
+ * successful hostkey generation
+ * @param hostkey_cls closure for hostkey callback
* @param cb function to call on each daemon that was started
* @param cb_cls closure for cb
- * @param hostname where to run the peers; can be NULL (to run
- * everything on localhost).
- * @param va Additional hosts can be specified using a NULL-terminated list of
- * varargs, hosts will then be used round-robin from that
- * list; va only contains anything if hostname != NULL.
+ * @param connect_callback function to call each time two hosts are connected
+ * @param connect_callback_cls closure for connect_callback
+ * @param hostnames linked list of host structs to use to start peers on
+ * (NULL to run on localhost only)
+ *
* @return NULL on error, otherwise handle to control peer group
*/
struct GNUNET_TESTING_PeerGroup *
-GNUNET_TESTING_daemons_start_va (struct GNUNET_SCHEDULER_Handle *sched,
- const struct GNUNET_CONFIGURATION_Handle *cfg,
- unsigned int total,
- GNUNET_TESTING_NotifyDaemonRunning cb,
- void *cb_cls,
- const char *hostname,
- va_list va);
+GNUNET_TESTING_daemons_start (const struct GNUNET_CONFIGURATION_Handle *cfg,
+ unsigned int total,
+ unsigned int max_concurrent_connections,
+ unsigned int max_concurrent_ssh,
+ struct GNUNET_TIME_Relative timeout,
+ GNUNET_TESTING_NotifyHostkeyCreated
+ hostkey_callback, void *hostkey_cls,
+ GNUNET_TESTING_NotifyDaemonRunning cb,
+ void *cb_cls,
+ GNUNET_TESTING_NotifyConnection
+ connect_callback, void *connect_callback_cls,
+ const struct GNUNET_TESTING_Host *hostnames);
+/**
+ * Function which continues a peer group starting up
+ * after successfully generating hostkeys for each peer.
+ *
+ * @param pg the peer group to continue starting
+ */
+void
+GNUNET_TESTING_daemons_continue_startup(struct GNUNET_TESTING_PeerGroup *pg);
/**
- * Start count gnunetd processes with the same set of
- * transports and applications. The port numbers will
- * be computed by adding delta each time (zero
- * times for the first peer).
+ * Restart all peers in the given group.
*
- * @param sched scheduler to use
- * @param cfg configuration template to use
- * @param total number of daemons to start
- * @param timeout how long is this allowed to take?
- * @param cb function to call on each daemon that was started
- * @param cb_cls closure for cb
- * @param hostname where to run the peers; can be NULL (to run
- * everything on localhost). Additional
- * hosts can be specified using a NULL-terminated list of
- * varargs, hosts will then be used round-robin from that
- * list.
- * @return NULL on error, otherwise handle to control peer group
+ * @param pg the handle to the peer group
+ * @param callback function to call on completion (or failure)
+ * @param callback_cls closure for the callback function
*/
-struct GNUNET_TESTING_PeerGroup *
-GNUNET_TESTING_daemons_start (struct GNUNET_SCHEDULER_Handle *sched,
- struct GNUNET_CONFIGURATION_Handle *cfg,
- unsigned int total,
- GNUNET_TESTING_NotifyDaemonRunning cb,
- void *cb_cls,
- const char *hostname,
- ...);
+void
+GNUNET_TESTING_daemons_restart (struct GNUNET_TESTING_PeerGroup *pg,
+ GNUNET_TESTING_NotifyCompletion callback,
+ void *callback_cls);
/**
* Shutdown all peers started in the given group.
- *
+ *
* @param pg handle to the peer group
+ * @param timeout how long to wait for shutdown
+ * @param cb callback to notify upon success or failure
+ * @param cb_cls closure for cb
*/
void
-GNUNET_TESTING_daemons_stop (struct GNUNET_TESTING_PeerGroup *pg);
+GNUNET_TESTING_daemons_stop (struct GNUNET_TESTING_PeerGroup *pg,
+ struct GNUNET_TIME_Relative timeout,
+ GNUNET_TESTING_NotifyCompletion cb,
+ void *cb_cls);
/**
- * Handle to an entire testbed of GNUnet peers.
+ * Count the number of running peers.
+ *
+ * @param pg handle for the peer group
+ *
+ * @return the number of currently running peers in the peer group
*/
-struct GNUNET_TESTING_Testbed;
+unsigned int
+GNUNET_TESTING_daemons_running (struct GNUNET_TESTING_PeerGroup *pg);
+
+/**
+ * Simulate churn by stopping some peers (and possibly
+ * re-starting others if churn is called multiple times). This
+ * function can only be used to create leave-join churn (peers "never"
+ * leave for good). First "voff" random peers that are currently
+ * online will be taken offline; then "von" random peers that are then
+ * offline will be put back online. No notifications will be
+ * generated for any of these operations except for the callback upon
+ * completion. Note that the implementation is at liberty to keep
+ * the ARM service itself (but none of the other services or daemons)
+ * running even though the "peer" is being varied offline.
+ *
+ * @param pg handle for the peer group
+ * @param voff number of peers that should go offline
+ * @param von number of peers that should come back online;
+ * must be zero on first call (since "testbed_start"
+ * always starts all of the peers)
+ * @param timeout how long to wait for operations to finish before
+ * giving up
+ * @param cb function to call at the end
+ * @param cb_cls closure for cb
+ */
+void
+GNUNET_TESTING_daemons_churn (struct GNUNET_TESTING_PeerGroup *pg,
+ unsigned int voff,
+ unsigned int von,
+ struct GNUNET_TIME_Relative timeout,
+ GNUNET_TESTING_NotifyCompletion cb,
+ void *cb_cls);
+/**
+ * Callback function to process statistic values.
+ *
+ * @param cls closure
+ * @param peer the peer the statistics belong to
+ * @param subsystem name of subsystem that created the statistic
+ * @param name the name of the datum
+ * @param value the current value
+ * @param is_persistent GNUNET_YES if the value is persistent, GNUNET_NO if not
+ * @return GNUNET_OK to continue, GNUNET_SYSERR to abort iteration
+ */
+typedef int (*GNUNET_TESTING_STATISTICS_Iterator) (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ const char *subsystem,
+ const char *name,
+ uint64_t value,
+ int is_persistent);
+
+/**
+ * Iterate over all (running) peers in the peer group, retrieve
+ * all statistics from each.
+ */
+void
+GNUNET_TESTING_get_statistics (struct GNUNET_TESTING_PeerGroup *pg,
+ GNUNET_STATISTICS_Callback cont,
+ GNUNET_TESTING_STATISTICS_Iterator proc, void *cls);
/**
* Topologies supported for testbeds.
*/
GNUNET_TESTING_TOPOLOGY_SMALL_WORLD,
+ /**
+ * Small-world network (ring plus random links).
+ */
+ GNUNET_TESTING_TOPOLOGY_SMALL_WORLD_RING,
+
/**
* Ring topology.
*/
*/
GNUNET_TESTING_TOPOLOGY_ERDOS_RENYI,
+ /**
+ * Certain percentage of peers are unable to communicate directly
+ * replicating NAT conditions
+ */
+ GNUNET_TESTING_TOPOLOGY_INTERNAT,
+
+ /**
+ * Scale free topology.
+ */
+ GNUNET_TESTING_TOPOLOGY_SCALE_FREE,
+
+ /**
+ * Straight line topology.
+ */
+ GNUNET_TESTING_TOPOLOGY_LINE,
+
/**
* All peers are disconnected.
*/
- GNUNET_TESTING_TOPOLOGY_NONE
+ GNUNET_TESTING_TOPOLOGY_NONE,
+
+ /**
+ * Read a topology from a given file.
+ */
+ GNUNET_TESTING_TOPOLOGY_FROM_FILE
+};
+
+/**
+ * Options for connecting a topology.
+ */
+enum GNUNET_TESTING_TopologyOption
+{
+ /**
+ * Try to connect all peers specified in the topology.
+ */
+ GNUNET_TESTING_TOPOLOGY_OPTION_ALL,
+
+ /**
+ * Choose a random subset of connections to create.
+ */
+ GNUNET_TESTING_TOPOLOGY_OPTION_RANDOM,
+
+ /**
+ * Create at least X connections for each peer.
+ */
+ GNUNET_TESTING_TOPOLOGY_OPTION_MINIMUM,
+
+ /**
+ * Using a depth first search, create one connection
+ * per peer. If any are missed (graph disconnected)
+ * start over at those peers until all have at least one
+ * connection.
+ */
+ GNUNET_TESTING_TOPOLOGY_OPTION_DFS,
+
+ /**
+ * Find the N closest peers to each allowed peer in the
+ * topology and make sure a connection to those peers
+ * exists in the connect topology.
+ */
+ GNUNET_TESTING_TOPOLOGY_OPTION_ADD_CLOSEST,
+
+ /**
+ * No options specified.
+ */
+ GNUNET_TESTING_TOPOLOGY_OPTION_NONE
};
/**
- * Start "count" GNUnet daemons with a particular topology.
+ * Get a topology from a string input.
*
- * @param sched scheduler to use
- * @param cfg configuration template to use
- * @param count number of peers the testbed should have
- * @param topology desired topology (enforced via F2F)
- * @param cb function to call on each daemon that was started
- * @param cb_cls closure for cb
- * @param hostname where to run the peers; can be NULL (to run
- * everything on localhost). Additional
- * hosts can be specified using a NULL-terminated list of
- * varargs, hosts will then be used round-robin from that
- * list.
- * @return handle to control the testbed
+ * @param topology where to write the retrieved topology
+ * @param topology_string The string to attempt to
+ * get a configuration value from
+ * @return GNUNET_YES if topology string matched a
+ * known topology, GNUNET_NO if not
*/
-struct GNUNET_TESTING_Testbed *
-GNUNET_TESTING_testbed_start (struct GNUNET_SCHEDULER_Handle *sched,
- const struct GNUNET_CONFIGURATION_Handle *cfg,
- unsigned int count,
- enum GNUNET_TESTING_Topology topology,
- GNUNET_TESTING_NotifyDaemonRunning cb,
- void *cb_cls,
- const char *hostname,
- ...);
+int
+GNUNET_TESTING_topology_get(enum GNUNET_TESTING_Topology *topology,
+ const char * topology_string);
+
+/**
+ * Get connect topology option from string input.
+ *
+ * @param topology_option where to write the retrieved topology
+ * @param topology_string The string to attempt to
+ * get a configuration value from
+ * @return GNUNET_YES if topology string matched a
+ * known topology, GNUNET_NO if not
+ */
+int
+GNUNET_TESTING_topology_option_get(enum GNUNET_TESTING_TopologyOption *topology_option,
+ const char * topology_string);
/**
- * Stop all of the daemons started with the start function.
+ * Takes a peer group and creates a topology based on the
+ * one specified. Creates a topology means generates friend
+ * files for the peers so they can only connect to those allowed
+ * by the topology. This will only have an effect once peers
+ * are started if the FRIENDS_ONLY option is set in the base
+ * config.
*
- * @param tb handle for the testbed
- * @param cb function to call when done
- * @param cb_cls closure for cb
+ * Also takes an optional restrict topology which
+ * disallows direct connections UNLESS they are specified in
+ * the restricted topology.
+ *
+ * A simple example; if the topology option is set to LINE
+ * peers can ONLY connect in a LINE. However, if the topology
+ * option is set to 2D-torus and the restrict option is set to
+ * line with restrict_transports equal to "tcp udp", then peers
+ * may connect in a 2D-torus, but will be restricted to tcp and
+ * udp connections only in a LINE. Generally it only makes
+ * sense to do this if restrict_topology is a subset of topology.
+ *
+ * For testing peer discovery, etc. it is generally better to
+ * leave restrict_topology as GNUNET_TESTING_TOPOLOGY_NONE and
+ * then use the connect_topology function to restrict the initial
+ * connection set.
+ *
+ * @param pg the peer group struct representing the running peers
+ * @param topology which topology to connect the peers in
+ * @param restrict_topology allow only direct connections in this topology,
+ * based on those listed in restrict_transports, set to
+ * GNUNET_TESTING_TOPOLOGY_NONE for no restrictions
+ * @param restrict_transports space delimited list of transports to blacklist
+ * to create restricted topology, NULL for none
+ *
+ * @return the maximum number of connections were all allowed peers
+ * connected to each other
+ */
+unsigned int
+GNUNET_TESTING_create_topology (struct GNUNET_TESTING_PeerGroup *pg,
+ enum GNUNET_TESTING_Topology topology,
+ enum GNUNET_TESTING_Topology restrict_topology,
+ const char *restrict_transports);
+
+/**
+ * Iterate over all (running) peers in the peer group, retrieve
+ * all connections that each currently has.
+ *
+ * @param pg the peer group we are concerned with
+ * @param cb callback for topology information
+ * @param cls closure for callback
*/
void
-GNUNET_TESTING_testbed_stop (struct GNUNET_TESTING_Testbed *tb,
- GNUNET_TESTING_NotifyCompletion cb,
- void *cb_cls );
+GNUNET_TESTING_get_topology (struct GNUNET_TESTING_PeerGroup *pg,
+ GNUNET_TESTING_NotifyTopology cb, void *cls);
+/**
+ * Stop the connection process temporarily.
+ *
+ * @param pg the peer group to stop connecting
+ */
+void GNUNET_TESTING_stop_connections(struct GNUNET_TESTING_PeerGroup *pg);
/**
- * Simulate churn in the testbed by stopping some peers (and possibly
- * re-starting others if churn is called multiple times). This
- * function can only be used to create leave-join churn (peers "never"
- * leave for good). First "voff" random peers that are currently
- * online will be taken offline; then "von" random peers that are then
- * offline will be put back online. No notifications will be
- * generated for any of these operations except for the callback upon
- * completion. Note that the implementation is at liberty to keep
- * the ARM service itself (but none of the other services or daemons)
- * running even though the "peer" is being varied offline.
+ * Resume the connection process.
*
- * @param tb handle for the testbed
- * @param voff number of peers that should go offline
- * @param von number of peers that should come back online;
- * must be zero on first call (since "testbed_start"
- * always starts all of the peers)
+ * @param pg the peer group to resume connecting
+ */
+void GNUNET_TESTING_resume_connections(struct GNUNET_TESTING_PeerGroup *pg);
+
+/**
+ * There are many ways to connect peers that are supported by this function.
+ * To connect peers in the same topology that was created via the
+ * GNUNET_TESTING_create_topology, the topology variable must be set to
+ * GNUNET_TESTING_TOPOLOGY_NONE. If the topology variable is specified,
+ * a new instance of that topology will be generated and attempted to be
+ * connected. This could result in some connections being impossible,
+ * because some topologies are non-deterministic.
+ *
+ * @param pg the peer group struct representing the running peers
+ * @param topology which topology to connect the peers in
+ * @param options options for connecting the topology
+ * @param option_modifier modifier for options that take a parameter
+ * @param connect_timeout how long to wait before giving up on connecting
+ * two peers
+ * @param connect_attempts how many times to attempt to connect two peers
+ * over the connect_timeout duration
+ * @param notify_callback notification to be called once all connections completed
+ * @param notify_cls closure for notification callback
+ *
+ * @return the number of connections that will be attempted, GNUNET_SYSERR on error
+ */
+int
+GNUNET_TESTING_connect_topology (struct GNUNET_TESTING_PeerGroup *pg,
+ enum GNUNET_TESTING_Topology topology,
+ enum GNUNET_TESTING_TopologyOption options,
+ double option_modifier,
+ struct GNUNET_TIME_Relative connect_timeout,
+ unsigned int connect_attempts,
+ GNUNET_TESTING_NotifyCompletion
+ notify_callback, void *notify_cls);
+
+/**
+ * Start or stop an individual peer from the given group.
+ *
+ * @param pg handle to the peer group
+ * @param offset which peer to start or stop
+ * @param desired_status GNUNET_YES to have it running, GNUNET_NO to stop it
+ * @param timeout how long to wait for shutdown
* @param cb function to call at the end
* @param cb_cls closure for cb
*/
void
-GNUNET_TESTING_testbed_churn (struct GNUNET_TESTING_Testbed *tb,
- unsigned int voff,
- unsigned int von,
- GNUNET_TESTING_NotifyCompletion cb,
- void *cb_cls);
+GNUNET_TESTING_daemons_vary (struct GNUNET_TESTING_PeerGroup *pg,
+ unsigned int offset,
+ int desired_status,
+ struct GNUNET_TIME_Relative timeout,
+ GNUNET_TESTING_NotifyCompletion cb,
+ void *cb_cls);
+
+/**
+ * Start a peer group with a given number of peers. Notify
+ * on completion of peer startup and connection based on given
+ * topological constraints. Optionally notify on each
+ * established connection.
+ *
+ * @param cfg configuration template to use
+ * @param total number of daemons to start
+ * @param timeout total time allowed for peers to start
+ * @param connect_cb function to call each time two daemons are connected
+ * @param peergroup_cb function to call once all peers are up and connected
+ * @param peergroup_cls closure for peergroup callbacks
+ * @param hostnames linked list of host structs to use to start peers on
+ * (NULL to run on localhost only)
+ *
+ * @return NULL on error, otherwise handle to control peer group
+ */
+struct GNUNET_TESTING_PeerGroup *
+GNUNET_TESTING_peergroup_start(
+ const struct GNUNET_CONFIGURATION_Handle *cfg,
+ unsigned int total,
+ struct GNUNET_TIME_Relative timeout,
+ GNUNET_TESTING_NotifyConnection connect_cb,
+ GNUNET_TESTING_NotifyCompletion peergroup_cb,
+ void *peergroup_cls,
+ const struct GNUNET_TESTING_Host *hostnames);
#if 0 /* keep Emacsens' auto-indent happy */