+/*
+ Bacula® - The Network Backup Solution
+
+ Copyright (C) 2003-2008 Free Software Foundation Europe e.V.
+
+ The main author of Bacula is Kern Sibbald, with contributions from
+ many others, a complete list can be found in the file AUTHORS.
+ This program is Free Software; you can redistribute it and/or
+ modify it under the terms of version three of the GNU Affero General Public
+ License as published by the Free Software Foundation and included
+ in the file LICENSE.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA.
+
+ Bacula® is a registered trademark of Kern Sibbald.
+ The licensor of Bacula is the Free Software Foundation Europe
+ (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
+ Switzerland, email:ftf@fsfeurope.org.
+*/
/*
* Bacula File Daemon heartbeat routines
* Listens for heartbeats coming from the SD
* Version $Id$
*
*/
-/*
- Copyright (C) 2000-2003 Kern Sibbald and John Walker
-
- This program 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 of
- the License, or (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public
- License along with this program; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA.
-
- */
#include "bacula.h"
#include "filed.h"
-/*
+#define WAIT_INTERVAL 5
+
+extern "C" void *sd_heartbeat_thread(void *arg);
+extern "C" void *dir_heartbeat_thread(void *arg);
+extern bool no_signals;
+
+/*
* Listen on the SD socket for heartbeat signals.
* Send heartbeats to the Director every HB_TIME
* seconds.
*/
-static void *heartbeat_thread(void *arg)
+extern "C" void *sd_heartbeat_thread(void *arg)
{
int32_t n;
JCR *jcr = (JCR *)arg;
sd = dup_bsock(jcr->store_bsock);
dir = dup_bsock(jcr->dir_bsock);
- jcr->duped_sd = sd;
+ jcr->hb_bsock = sd;
+ jcr->hb_started = true;
+ jcr->hb_dir_bsock = dir;
/* Hang reading the socket to the SD, and every time we get
- * a heartbeat, we simply send it on to the Director to
- * keep him alive.
+ * a heartbeat or we get a wait timeout (1 minute), we
+ * check to see if we need to send a heartbeat to the
+ * Director.
*/
for ( ; !is_bnet_stop(sd); ) {
- n = bnet_wait_data_intr(sd, 60);
+ n = bnet_wait_data_intr(sd, WAIT_INTERVAL);
if (me->heartbeat_interval) {
- now = time(NULL);
- if (now-last_heartbeat >= me->heartbeat_interval) {
- bnet_sig(dir, BNET_HEARTBEAT);
- last_heartbeat = now;
- }
+ now = time(NULL);
+ if (now-last_heartbeat >= me->heartbeat_interval) {
+ bnet_sig(dir, BNET_HEARTBEAT);
+ last_heartbeat = now;
+ }
+ }
+ if (n < 0 || is_bnet_stop(sd)) {
+ break;
}
- if (n == 1) { /* input waiting */
- bnet_recv(sd); /* read it -- probably heartbeat from sd */
- Dmsg1(000, "Got %d from SD\n", sd->msglen);
+ if (n == 1) { /* input waiting */
+ sd->recv(); /* read it -- probably heartbeat from sd */
+ if (sd->msglen <= 0) {
+ Dmsg1(100, "Got BNET_SIG %d from SD\n", sd->msglen);
+ } else {
+ Dmsg2(100, "Got %d bytes from SD. MSG=%s\n", sd->msglen, sd->msg);
+ }
}
+ Dmsg2(100, "wait_intr=%d stop=%d\n", n, is_bnet_stop(sd));
}
- bnet_close(sd);
- bnet_close(dir);
- jcr->duped_sd = NULL;
+ sd->close();
+ dir->close();
+ jcr->hb_bsock = NULL;
+ jcr->hb_started = false;
+ jcr->hb_dir_bsock = NULL;
return NULL;
}
/* Startup the heartbeat thread -- see above */
void start_heartbeat_monitor(JCR *jcr)
{
- jcr->duped_sd = NULL;
- pthread_create(&jcr->heartbeat_id, NULL, heartbeat_thread, (void *)jcr);
+ /*
+ * If no signals are set, do not start the heartbeat because
+ * it gives a constant stream of TIMEOUT_SIGNAL signals that
+ * make debugging impossible.
+ */
+ if (!no_signals) {
+ jcr->hb_bsock = NULL;
+ jcr->hb_started = false;
+ jcr->hb_dir_bsock = NULL;
+ pthread_create(&jcr->heartbeat_id, NULL, sd_heartbeat_thread, (void *)jcr);
+ }
+}
+
+/* Terminate the heartbeat thread. Used for both SD and DIR */
+void stop_heartbeat_monitor(JCR *jcr)
+{
+ int cnt = 0;
+ if (no_signals) {
+ return;
+ }
+ /* Wait max 10 secs for heartbeat thread to start */
+ while (!jcr->hb_started && cnt++ < 200) {
+ bmicrosleep(0, 50000); /* wait for start */
+ }
+
+ if (jcr->hb_started) {
+ jcr->hb_bsock->set_timed_out(); /* set timed_out to terminate read */
+ jcr->hb_bsock->set_terminated(); /* set to terminate read */
+ }
+ if (jcr->hb_dir_bsock) {
+ jcr->hb_dir_bsock->set_timed_out(); /* set timed_out to terminate read */
+ jcr->hb_dir_bsock->set_terminated(); /* set to terminate read */
+ }
+ if (jcr->hb_started) {
+ Dmsg0(100, "Send kill to heartbeat id\n");
+ pthread_kill(jcr->heartbeat_id, TIMEOUT_SIGNAL); /* make heartbeat thread go away */
+ bmicrosleep(0, 50000);
+ }
+ cnt = 0;
+ /* Wait max 100 secs for heartbeat thread to stop */
+ while (jcr->hb_started && cnt++ < 200) {
+ pthread_kill(jcr->heartbeat_id, TIMEOUT_SIGNAL); /* make heartbeat thread go away */
+ bmicrosleep(0, 500000);
+ }
+}
+
+/*
+ * Thread for sending heartbeats to the Director when there
+ * is no SD monitoring needed -- e.g. restore and verify Vol
+ * both do their own read() on the SD socket.
+ */
+extern "C" void *dir_heartbeat_thread(void *arg)
+{
+ JCR *jcr = (JCR *)arg;
+ BSOCK *dir;
+ time_t last_heartbeat = time(NULL);
+
+ pthread_detach(pthread_self());
+
+ /* Get our own local copy */
+ dir = dup_bsock(jcr->dir_bsock);
+
+ jcr->hb_bsock = dir;
+ jcr->hb_started = true;
+
+ for ( ; !is_bnet_stop(dir); ) {
+ time_t now, next;
+
+ now = time(NULL);
+ next = now - last_heartbeat;
+ if (next >= me->heartbeat_interval) {
+ dir->signal(BNET_HEARTBEAT);
+ last_heartbeat = now;
+ }
+ bmicrosleep(next, 0);
+ }
+ dir->close();
+ jcr->hb_bsock = NULL;
+ jcr->hb_started = false;
+ return NULL;
}
-/* Terminate the heartbeat thread */
-void stop_heartbeat_monitor(JCR *jcr)
+/*
+ * Same as above but we don't listen to the SD
+ */
+void start_dir_heartbeat(JCR *jcr)
{
- /* Wait for heartbeat thread to start */
- while (jcr->duped_sd == NULL) {
- bmicrosleep(0, 50); /* avoid race */
+ if (me->heartbeat_interval) {
+ jcr->dir_bsock->set_locking();
+ pthread_create(&jcr->heartbeat_id, NULL, dir_heartbeat_thread, (void *)jcr);
}
- jcr->duped_sd->timed_out = 1; /* set timed_out to terminate read */
- jcr->duped_sd->terminated = 1; /* set to terminate read */
+}
- /* Wait for heartbeat thread to stop */
- while (jcr->duped_sd) {
- pthread_kill(jcr->heartbeat_id, TIMEOUT_SIGNAL); /* make heartbeat thread go away */
- bmicrosleep(0, 20);
+void stop_dir_heartbeat(JCR *jcr)
+{
+ if (me->heartbeat_interval) {
+ stop_heartbeat_monitor(jcr);
}
}
projects / bacula / bacula / blobdiff