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#include "announce.h"
#include "util.h"
#define FLX_ANNOUNCEMENT_JITTER_MSEC 0
static void remove_announcement(flxServer *s, flxAnnouncement *a) {
g_assert(s);
g_assert(a);
flx_time_event_queue_remove(s->time_event_queue, a->time_event);
FLX_LLIST_REMOVE(flxAnnouncement, by_interface, a->interface->announcements, a);
FLX_LLIST_REMOVE(flxAnnouncement, by_entry, a->entry->announcements, a);
g_free(a);
}
static void elapse_announce(flxTimeEvent *e, void *userdata) {
flxAnnouncement *a = userdata;
GTimeVal tv;
gchar *t;
g_assert(e);
g_assert(a);
flx_interface_post_response(a->interface, NULL, a->entry->record, FALSE);
if (a->n_announced++ <= 8)
a->sec_delay *= 2;
g_message("Announcement #%i on interface %s.%i for entry [%s]", a->n_announced, a->interface->hardware->name, a->interface->protocol, t = flx_record_to_string(a->entry->record));
g_free(t);
if (a->n_announced >= 4) {
g_message("Enough announcements for record [%s]", t = flx_record_to_string(a->entry->record));
g_free(t);
remove_announcement(a->server, a);
} else {
flx_elapse_time(&tv, a->sec_delay*1000, FLX_ANNOUNCEMENT_JITTER_MSEC);
flx_time_event_queue_update(a->server->time_event_queue, a->time_event, &tv);
}
}
static void new_announcement(flxServer *s, flxInterface *i, flxServerEntry *e) {
flxAnnouncement *a;
GTimeVal tv;
gchar *t;
g_assert(s);
g_assert(i);
g_assert(e);
g_message("NEW ANNOUNCEMENT: %s.%i [%s]", i->hardware->name, i->protocol, t = flx_record_to_string(e->record));
g_free(t);
if (!flx_interface_match(i, e->interface, e->protocol) || !i->announcing)
return;
/* We don't want duplicates */
for (a = e->announcements; a; a = a->by_entry_next)
if (a->interface == i)
return;
g_message("New announcement on interface %s.%i for entry [%s]", i->hardware->name, i->protocol, t = flx_record_to_string(e->record));
g_free(t);
flx_interface_post_response(i, NULL, e->record, FALSE);
a = g_new(flxAnnouncement, 1);
a->server = s;
a->interface = i;
a->entry = e;
a->n_announced = 1;
a->sec_delay = 1;
FLX_LLIST_PREPEND(flxAnnouncement, by_interface, i->announcements, a);
FLX_LLIST_PREPEND(flxAnnouncement, by_entry, e->announcements, a);
flx_elapse_time(&tv, a->sec_delay*1000, FLX_ANNOUNCEMENT_JITTER_MSEC);
a->time_event = flx_time_event_queue_add(s->time_event_queue, &tv, elapse_announce, a);
}
void flx_announce_interface(flxServer *s, flxInterface *i) {
flxServerEntry *e;
g_assert(s);
g_assert(i);
if (!i->announcing)
return;
g_message("ANNOUNCE INTERFACE");
for (e = s->entries; e; e = e->entry_next)
new_announcement(s, i, e);
}
static void announce_walk_callback(flxInterfaceMonitor *m, flxInterface *i, gpointer userdata) {
flxServerEntry *e = userdata;
g_assert(m);
g_assert(i);
g_assert(e);
new_announcement(m->server, i, e);
}
void flx_announce_entry(flxServer *s, flxServerEntry *e) {
g_assert(s);
g_assert(e);
g_message("ANNOUNCE ENTRY");
flx_interface_monitor_walk(s->monitor, e->interface, e->protocol, announce_walk_callback, e);
}
static flxRecord *make_goodbye_record(flxRecord *r) {
gchar *t;
g_assert(r);
g_message("Preparing goodbye for record [%s]", t = flx_record_to_string(r));
g_free(t);
return flx_record_new(r->key, r->data, r->size, 0);
}
void flx_goodbye_interface(flxServer *s, flxInterface *i, gboolean goodbye) {
g_assert(s);
g_assert(i);
while (i->announcements)
remove_announcement(s, i->announcements);
if (goodbye && flx_interface_relevant(i)) {
flxServerEntry *e;
for (e = s->entries; e; e = e->entry_next)
if (flx_interface_match(i, e->interface, e->protocol)) {
flxRecord *g = make_goodbye_record(e->record);
flx_interface_post_response(i, NULL, g, TRUE);
flx_record_unref(g);
}
}
}
void flx_goodbye_entry(flxServer *s, flxServerEntry *e, gboolean goodbye) {
g_assert(s);
g_assert(e);
while (e->announcements)
remove_announcement(s, e->announcements);
if (goodbye) {
flxRecord *g = make_goodbye_record(e->record);
flx_server_post_response(s, e->interface, e->protocol, g);
flx_record_unref(g);
}
}
void flx_goodbye_all(flxServer *s, gboolean goodbye) {
flxServerEntry *e;
g_assert(s);
for (e = s->entries; e; e = e->entry_next)
flx_goodbye_entry(s, e, goodbye);
}
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