3 /* amok host management - servers main loop and remote host stopping */
5 /* Copyright (c) 2006 Martin Quinson. All rights reserved. */
7 /* This program is free software; you can redistribute it and/or modify it
8 * under the terms of the license (GNU LGPL) which comes with this package. */
10 #include "xbt/sysdep.h"
12 #include "amok/hostmanagement.h"
13 #include "gras/Virtu/virtu_interface.h" /* libdata */
15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(amok_hm,amok,"Host management");
18 /* libdata management */
19 static int amok_hm_libdata_id;
24 unsigned int name_len;
29 } s_amok_hm_libdata_t, *amok_hm_libdata_t;
31 static void *amok_hm_libdata_new() {
32 amok_hm_libdata_t res=xbt_new(s_amok_hm_libdata_t,1);
33 res->name=xbt_strdup("amok_hm");
36 res->groups = xbt_dict_new();
39 static void amok_hm_libdata_free(void *d) {
40 amok_hm_libdata_t data=(amok_hm_libdata_t)d;
42 xbt_dict_free(&data->groups);
46 /* Message callbacks */
47 static int amok_hm_cb_kill(gras_msg_cb_ctx_t ctx,
50 amok_hm_libdata_t g=gras_libdata_by_id(amok_hm_libdata_id);
54 static int amok_hm_cb_killrpc(gras_msg_cb_ctx_t ctx,
57 amok_hm_libdata_t g=gras_libdata_by_id(amok_hm_libdata_id);
59 gras_msg_rpcreturn(30,ctx,NULL);
63 static int amok_hm_cb_get(gras_msg_cb_ctx_t ctx, void *payload) {
64 amok_hm_libdata_t g=gras_libdata_by_id(amok_hm_libdata_id);
65 char *name = *(void**)payload;
66 xbt_dynar_t res = xbt_dict_get(g->groups, name);
68 gras_msg_rpcreturn(30, ctx, &res);
71 static int amok_hm_cb_join(gras_msg_cb_ctx_t ctx, void *payload) {
72 amok_hm_libdata_t g=gras_libdata_by_id(amok_hm_libdata_id);
73 char *name = *(void**)payload;
74 xbt_dynar_t group = xbt_dict_get(g->groups, name);
76 gras_socket_t exp = gras_msg_cb_ctx_from(ctx);
77 xbt_host_t dude = xbt_host_new(gras_socket_peer_name(exp),
78 gras_socket_peer_port(exp));
80 xbt_dynar_push(group,&dude);
82 gras_msg_rpcreturn(30, ctx, NULL);
86 static int amok_hm_cb_leave(gras_msg_cb_ctx_t ctx, void *payload) {
87 amok_hm_libdata_t g=gras_libdata_by_id(amok_hm_libdata_id);
88 char *name = *(void**)payload;
89 xbt_dynar_t group = xbt_dict_get(g->groups, name);
91 gras_socket_t exp = gras_msg_cb_ctx_from(ctx);
92 xbt_host_t dude = xbt_host_new(gras_socket_peer_name(exp),
93 gras_socket_peer_port(exp));
98 xbt_dynar_foreach(group, cpt, host_it) {
99 if (!strcmp(host_it->name, dude->name) &&
100 host_it->port == dude->port) {
101 xbt_dynar_cursor_rm (group,&cpt);
105 WARN3("Asked to remove %s:%d from group '%s', but not found. Ignoring",
106 dude->name,dude->port, name);
109 gras_msg_rpcreturn(30, ctx, NULL);
113 static int amok_hm_cb_shutdown(gras_msg_cb_ctx_t ctx, void *payload) {
114 char *name = *(void**)payload;
115 amok_hm_group_shutdown(name);
117 gras_msg_rpcreturn(30, ctx, NULL);
122 /* Initialization stuff */
123 static short amok_hm_used = 0;
125 /** \brief Initialize the host management module. Every process must run it before use */
126 void amok_hm_init() {
128 if (! amok_hm_used) {
133 /* module data on each process */
134 amok_hm_libdata_id = gras_procdata_add("amok_hm",
136 amok_hm_libdata_free);
138 /* Datatype and message declarations */
139 gras_msgtype_declare("amok_hm_kill",NULL);
140 gras_msgtype_declare_rpc("amok_hm_killrpc",NULL,NULL);
142 gras_msgtype_declare_rpc("amok_hm_get",
143 gras_datadesc_by_name("string"),
144 gras_datadesc_by_name("xbt_dynar_t"));
145 gras_msgtype_declare_rpc("amok_hm_join",
146 gras_datadesc_by_name("string"),
148 gras_msgtype_declare_rpc("amok_hm_leave",
149 gras_datadesc_by_name("string"),
152 gras_msgtype_declare_rpc("amok_hm_shutdown",
153 gras_datadesc_by_name("string"),
159 gras_cb_register(gras_msgtype_by_name("amok_hm_kill"),
161 gras_cb_register(gras_msgtype_by_name("amok_hm_killrpc"),
162 &amok_hm_cb_killrpc);
164 gras_cb_register(gras_msgtype_by_name("amok_hm_get"),
166 gras_cb_register(gras_msgtype_by_name("amok_hm_join"),
168 gras_cb_register(gras_msgtype_by_name("amok_hm_leave"),
170 gras_cb_register(gras_msgtype_by_name("amok_hm_shutdown"),
171 &amok_hm_cb_shutdown);
174 /** \brief Finalize the host management module. Every process should run it after use */
175 void amok_hm_exit() {
180 gras_cb_unregister(gras_msgtype_by_name("amok_hm_kill"),
182 gras_cb_unregister(gras_msgtype_by_name("amok_hm_killrpc"),
183 &amok_hm_cb_killrpc);
185 gras_cb_unregister(gras_msgtype_by_name("amok_hm_get"),
187 gras_cb_unregister(gras_msgtype_by_name("amok_hm_join"),
189 gras_cb_unregister(gras_msgtype_by_name("amok_hm_leave"),
192 gras_cb_unregister(gras_msgtype_by_name("amok_hm_shutdown"),
193 &amok_hm_cb_shutdown);
197 /** \brief Enter the main loop of the program. It won't return until we get a kill message. */
198 void amok_hm_mainloop(double timeOut) {
199 amok_hm_libdata_t g=gras_libdata_by_id(amok_hm_libdata_id);
202 gras_msg_handle(timeOut);
206 /** \brief kill a buddy identified by its hostname and port */
207 void amok_hm_kill_hp(char *name,int port) {
208 gras_socket_t sock=gras_socket_client(name,port);
210 gras_socket_close(sock);
213 /** \brief kill a buddy to which we have a socket already */
214 void amok_hm_kill(gras_socket_t buddy) {
215 gras_msg_send(buddy,gras_msgtype_by_name("amok_hm_kill"),NULL);
218 /** \brief kill syncronously a buddy (do not return before its death) */
219 void amok_hm_kill_sync(gras_socket_t buddy) {
220 gras_msg_rpccall(buddy,30,gras_msgtype_by_name("amok_hm_killrpc"),NULL,NULL);
224 /** \brief create a new hostmanagement group located on local host
226 * The dynar elements are of type xbt_host_t
228 xbt_dynar_t amok_hm_group_new(const char *group_name) {
229 amok_hm_libdata_t g=gras_libdata_by_id(amok_hm_libdata_id);
230 xbt_dynar_t res = xbt_dynar_new(sizeof(xbt_host_t),
231 xbt_host_free_voidp);
233 xbt_dict_set(g->groups,group_name,res,NULL); /*FIXME: leaking xbt_dynar_free_voidp);*/
234 VERB1("Group %s created",group_name);
238 /** \brief retrieve all members of the given remote group */
239 xbt_dynar_t amok_hm_group_get(gras_socket_t master, const char *group_name) {
242 gras_msg_rpccall(master,30,gras_msgtype_by_name("amok_hm_get"),
247 /** \brief add current host to the given remote group */
248 void amok_hm_group_join(gras_socket_t master, const char *group_name) {
249 gras_msg_rpccall(master,30,gras_msgtype_by_name("amok_hm_join"),
251 VERB3("Joined group '%s' on %s:%d",
252 group_name,gras_socket_peer_name(master),gras_socket_peer_port(master));
254 /** \brief remove current host from the given remote group if found
256 * If not found, call is ignored
258 void amok_hm_group_leave(gras_socket_t master, const char *group_name) {
259 gras_msg_rpccall(master,30,gras_msgtype_by_name("amok_hm_leave"),
261 VERB3("Leaved group '%s' on %s:%d",
262 group_name,gras_socket_peer_name(master),gras_socket_peer_port(master));
265 /** \brief stops all members of the given local group */
266 void amok_hm_group_shutdown(const char *group_name) {
267 amok_hm_libdata_t g=gras_libdata_by_id(amok_hm_libdata_id);
268 xbt_dynar_t group = xbt_dict_get(g->groups, group_name);
273 xbt_dynar_foreach(group, cpt, host_it) {
274 amok_hm_kill_hp(host_it->name, host_it->port);
277 xbt_dict_remove(g->groups,group_name);
279 /** \brief stops all members of the given remote group */
280 void amok_hm_group_shutdown_remote(gras_socket_t master, const char *group_name){
281 gras_msg_rpccall(master,30,gras_msgtype_by_name("amok_hm_shutdown"),