/**
* collectd - src/ping.c
- * Copyright (C) 2005-2009 Florian octo Forster
+ * Copyright (C) 2005-2012 Florian octo Forster
*
- * 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; only version 2 of the License is applicable.
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
*
- * 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.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*
- * 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.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
*
* Authors:
- * Florian octo Forster <octo at verplant.org>
+ * Florian octo Forster <octo at collectd.org>
**/
#include "collectd.h"
+
#include "common.h"
#include "plugin.h"
#include "configfile.h"
+#include "utils_complain.h"
-#include <pthread.h>
#include <netinet/in.h>
#if HAVE_NETDB_H
# include <netdb.h> /* NI_MAXHOST */
# define NI_MAXHOST 1025
#endif
+#if defined(OPING_VERSION) && (OPING_VERSION >= 1003000)
+# define HAVE_OPING_1_3
+#endif
+
/*
* Private data types
*/
uint32_t pkg_sent;
uint32_t pkg_recv;
+ uint32_t pkg_missed;
double latency_total;
double latency_squared;
*/
static hostlist_t *hostlist_head = NULL;
+static char *ping_source = NULL;
+#ifdef HAVE_OPING_1_3
+static char *ping_device = NULL;
+#endif
+static char *ping_data = NULL;
static int ping_ttl = PING_DEF_TTL;
static double ping_interval = 1.0;
static double ping_timeout = 0.9;
+static int ping_max_missed = -1;
static int ping_thread_loop = 0;
static int ping_thread_error = 0;
static const char *config_keys[] =
{
"Host",
+ "SourceAddress",
+#ifdef HAVE_OPING_1_3
+ "Device",
+#endif
+ "Size",
"TTL",
"Interval",
- "Timeout"
+ "Timeout",
+ "MaxMissed"
};
static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
time_normalize (ts_dest);
} /* }}} void time_calc */
+static int ping_dispatch_all (pingobj_t *pingobj) /* {{{ */
+{
+ hostlist_t *hl;
+ int status;
+
+ for (pingobj_iter_t *iter = ping_iterator_get (pingobj);
+ iter != NULL;
+ iter = ping_iterator_next (iter))
+ { /* {{{ */
+ char userhost[NI_MAXHOST];
+ double latency;
+ size_t param_size;
+
+ param_size = sizeof (userhost);
+ status = ping_iterator_get_info (iter,
+#ifdef PING_INFO_USERNAME
+ PING_INFO_USERNAME,
+#else
+ PING_INFO_HOSTNAME,
+#endif
+ userhost, ¶m_size);
+ if (status != 0)
+ {
+ WARNING ("ping plugin: ping_iterator_get_info failed: %s",
+ ping_get_error (pingobj));
+ continue;
+ }
+
+ for (hl = hostlist_head; hl != NULL; hl = hl->next)
+ if (strcmp (userhost, hl->host) == 0)
+ break;
+
+ if (hl == NULL)
+ {
+ WARNING ("ping plugin: Cannot find host %s.", userhost);
+ continue;
+ }
+
+ param_size = sizeof (latency);
+ status = ping_iterator_get_info (iter, PING_INFO_LATENCY,
+ (void *) &latency, ¶m_size);
+ if (status != 0)
+ {
+ WARNING ("ping plugin: ping_iterator_get_info failed: %s",
+ ping_get_error (pingobj));
+ continue;
+ }
+
+ hl->pkg_sent++;
+ if (latency >= 0.0)
+ {
+ hl->pkg_recv++;
+ hl->latency_total += latency;
+ hl->latency_squared += (latency * latency);
+
+ /* reset missed packages counter */
+ hl->pkg_missed = 0;
+ } else
+ hl->pkg_missed++;
+
+ /* if the host did not answer our last N packages, trigger a resolv. */
+ if ((ping_max_missed >= 0)
+ && (hl->pkg_missed >= ((uint32_t) ping_max_missed)))
+ { /* {{{ */
+ /* we reset the missed package counter here, since we only want to
+ * trigger a resolv every N packages and not every package _AFTER_ N
+ * missed packages */
+ hl->pkg_missed = 0;
+
+ WARNING ("ping plugin: host %s has not answered %d PING requests,"
+ " triggering resolve", hl->host, ping_max_missed);
+
+ /* we trigger the resolv simply be removeing and adding the host to our
+ * ping object */
+ status = ping_host_remove (pingobj, hl->host);
+ if (status != 0)
+ {
+ WARNING ("ping plugin: ping_host_remove (%s) failed.", hl->host);
+ }
+ else
+ {
+ status = ping_host_add (pingobj, hl->host);
+ if (status != 0)
+ ERROR ("ping plugin: ping_host_add (%s) failed.", hl->host);
+ }
+ } /* }}} ping_max_missed */
+ } /* }}} for (iter) */
+
+ return (0);
+} /* }}} int ping_dispatch_all */
+
static void *ping_thread (void *arg) /* {{{ */
{
- static pingobj_t *pingobj = NULL;
+ pingobj_t *pingobj = NULL;
struct timeval tv_begin;
struct timeval tv_end;
struct timespec ts_wait;
struct timespec ts_int;
- hostlist_t *hl;
- int status;
+ int count;
+
+ c_complain_t complaint = C_COMPLAIN_INIT_STATIC;
pthread_mutex_lock (&ping_lock);
return ((void *) -1);
}
+ if (ping_source != NULL)
+ if (ping_setopt (pingobj, PING_OPT_SOURCE, (void *) ping_source) != 0)
+ ERROR ("ping plugin: Failed to set source address: %s",
+ ping_get_error (pingobj));
+
+#ifdef HAVE_OPING_1_3
+ if (ping_device != NULL)
+ if (ping_setopt (pingobj, PING_OPT_DEVICE, (void *) ping_device) != 0)
+ ERROR ("ping plugin: Failed to set device: %s",
+ ping_get_error (pingobj));
+#endif
+
ping_setopt (pingobj, PING_OPT_TIMEOUT, (void *) &ping_timeout);
ping_setopt (pingobj, PING_OPT_TTL, (void *) &ping_ttl);
+ if (ping_data != NULL)
+ ping_setopt (pingobj, PING_OPT_DATA, (void *) ping_data);
+
/* Add all the hosts to the ping object. */
- status = 0;
- for (hl = hostlist_head; hl != NULL; hl = hl->next)
+ count = 0;
+ for (hostlist_t *hl = hostlist_head; hl != NULL; hl = hl->next)
{
int tmp_status;
tmp_status = ping_host_add (pingobj, hl->host);
if (tmp_status != 0)
- WARNING ("ping plugin: ping_host_add (%s) failed.", hl->host);
+ WARNING ("ping plugin: ping_host_add (%s) failed: %s",
+ hl->host, ping_get_error (pingobj));
else
- status++;
+ count++;
}
- if (status == 0)
+ if (count == 0)
{
ERROR ("ping plugin: No host could be added to ping object. Giving up.");
ping_thread_error = 1;
while (ping_thread_loop > 0)
{
- pingobj_iter_t *iter;
int status;
+ _Bool send_successful = 0;
if (gettimeofday (&tv_begin, NULL) < 0)
{
- ERROR ("ping plugin: gettimeofday failed");
+ char errbuf[1024];
+ ERROR ("ping plugin: gettimeofday failed: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
ping_thread_error = 1;
break;
}
status = ping_send (pingobj);
if (status < 0)
{
- ERROR ("ping plugin: ping_send failed: %s", ping_get_error (pingobj));
- pthread_mutex_lock (&ping_lock);
- ping_thread_error = 1;
- break;
+ c_complain (LOG_ERR, &complaint, "ping plugin: ping_send failed: %s",
+ ping_get_error (pingobj));
+ }
+ else
+ {
+ c_release (LOG_NOTICE, &complaint, "ping plugin: ping_send succeeded.");
+ send_successful = 1;
}
pthread_mutex_lock (&ping_lock);
if (ping_thread_loop <= 0)
break;
- for (iter = ping_iterator_get (pingobj);
- iter != NULL;
- iter = ping_iterator_next (iter))
- { /* {{{ */
- char userhost[NI_MAXHOST];
- double latency;
- size_t param_size;
-
- param_size = sizeof (userhost);
- status = ping_iterator_get_info (iter,
-#ifdef PING_INFO_USERNAME
- PING_INFO_USERNAME,
-#else
- PING_INFO_HOSTNAME,
-#endif
- userhost, ¶m_size);
- if (status != 0)
- {
- WARNING ("ping plugin: ping_iterator_get_info failed: %s",
- ping_get_error (pingobj));
- continue;
- }
-
- for (hl = hostlist_head; hl != NULL; hl = hl->next)
- if (strcmp (userhost, hl->host) == 0)
- break;
-
- if (hl == NULL)
- {
- WARNING ("ping plugin: Cannot find host %s.", userhost);
- continue;
- }
-
- param_size = sizeof (latency);
- status = ping_iterator_get_info (iter, PING_INFO_LATENCY,
- (void *) &latency, ¶m_size);
- if (status != 0)
- {
- WARNING ("ping plugin: ping_iterator_get_info failed: %s",
- ping_get_error (pingobj));
- continue;
- }
-
- hl->pkg_sent++;
- if (latency >= 0.0)
- {
- hl->pkg_recv++;
- hl->latency_total += latency;
- hl->latency_squared += (latency * latency);
- }
- } /* }}} for (iter) */
+ if (send_successful)
+ (void) ping_dispatch_all (pingobj);
if (gettimeofday (&tv_end, NULL) < 0)
{
- ERROR ("ping plugin: gettimeofday failed");
+ char errbuf[1024];
+ ERROR ("ping plugin: gettimeofday failed: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
ping_thread_error = 1;
break;
}
* `ts_wait'. */
time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
- status = pthread_cond_timedwait (&ping_cond, &ping_lock, &ts_wait);
+ pthread_cond_timedwait (&ping_cond, &ping_lock, &ts_wait);
if (ping_thread_loop <= 0)
break;
} /* while (ping_thread_loop > 0) */
if (ping_thread_loop != 0)
{
pthread_mutex_unlock (&ping_lock);
- return (-1);
+ return (0);
}
ping_thread_loop = 1;
ping_thread_error = 0;
- status = pthread_create (&ping_thread_id, /* attr = */ NULL,
+ status = plugin_thread_create (&ping_thread_id, /* attr = */ NULL,
ping_thread, /* arg = */ (void *) 0);
if (status != 0)
{
pthread_mutex_unlock (&ping_lock);
return (-1);
}
-
+
pthread_mutex_unlock (&ping_lock);
return (0);
} /* }}} int start_thread */
status = -1;
}
+ pthread_mutex_lock (&ping_lock);
memset (&ping_thread_id, 0, sizeof (ping_thread_id));
ping_thread_error = 0;
+ pthread_mutex_unlock (&ping_lock);
return (status);
} /* }}} int stop_thread */
"Will use a timeout of %gs.", ping_timeout);
}
- if (start_thread () != 0)
- return (-1);
+ return (start_thread ());
+} /* }}} int ping_init */
+
+static int config_set_string (const char *name, /* {{{ */
+ char **var, const char *value)
+{
+ char *tmp;
+ tmp = strdup (value);
+ if (tmp == NULL)
+ {
+ char errbuf[1024];
+ ERROR ("ping plugin: Setting `%s' to `%s' failed: strdup failed: %s",
+ name, value, sstrerror (errno, errbuf, sizeof (errbuf)));
+ return (1);
+ }
+
+ if (*var != NULL)
+ free (*var);
+ *var = tmp;
return (0);
-} /* }}} int ping_init */
+} /* }}} int config_set_string */
static int ping_config (const char *key, const char *value) /* {{{ */
{
hostlist_t *hl;
char *host;
- hl = (hostlist_t *) malloc (sizeof (hostlist_t));
+ hl = malloc (sizeof (*hl));
if (hl == NULL)
{
char errbuf[1024];
hl->host = host;
hl->pkg_sent = 0;
hl->pkg_recv = 0;
+ hl->pkg_missed = 0;
hl->latency_total = 0.0;
hl->latency_squared = 0.0;
hl->next = hostlist_head;
hostlist_head = hl;
}
+ else if (strcasecmp (key, "SourceAddress") == 0)
+ {
+ int status = config_set_string (key, &ping_source, value);
+ if (status != 0)
+ return (status);
+ }
+#ifdef HAVE_OPING_1_3
+ else if (strcasecmp (key, "Device") == 0)
+ {
+ int status = config_set_string (key, &ping_device, value);
+ if (status != 0)
+ return (status);
+ }
+#endif
else if (strcasecmp (key, "TTL") == 0)
{
int ttl = atoi (value);
WARNING ("ping plugin: Ignoring invalid interval %g (%s)",
tmp, value);
}
+ else if (strcasecmp (key, "Size") == 0) {
+ size_t size = (size_t) atoi (value);
+
+ /* Max IP packet size - (IPv6 + ICMP) = 65535 - (40 + 8) = 65487 */
+ if (size <= 65487)
+ {
+ sfree (ping_data);
+ ping_data = malloc (size + 1);
+ if (ping_data == NULL)
+ {
+ ERROR ("ping plugin: malloc failed.");
+ return (1);
+ }
+
+ /* Note: By default oping is using constant string
+ * "liboping -- ICMP ping library <http://octo.it/liboping/>"
+ * which is exactly 56 bytes.
+ *
+ * Optimally we would follow the ping(1) behaviour, but we
+ * cannot use byte 00 or start data payload at exactly same
+ * location, due to oping library limitations. */
+ for (size_t i = 0; i < size; i++) /* {{{ */
+ {
+ /* This restricts data pattern to be only composed of easily
+ * printable characters, and not NUL character. */
+ ping_data[i] = ('0' + i % 64);
+ } /* }}} for (i = 0; i < size; i++) */
+ ping_data[size] = 0;
+ } else
+ WARNING ("ping plugin: Ignoring invalid Size %zu.", size);
+ }
else if (strcasecmp (key, "Timeout") == 0)
{
double tmp;
WARNING ("ping plugin: Ignoring invalid timeout %g (%s)",
tmp, value);
}
+ else if (strcasecmp (key, "MaxMissed") == 0)
+ {
+ ping_max_missed = atoi (value);
+ if (ping_max_missed < 0)
+ INFO ("ping plugin: MaxMissed < 0, disabled re-resolving of hosts");
+ }
else
{
return (-1);
static int ping_read (void) /* {{{ */
{
- hostlist_t *hl;
-
if (ping_thread_error != 0)
{
ERROR ("ping plugin: The ping thread had a problem. Restarting it.");
stop_thread ();
- for (hl = hostlist_head; hl != NULL; hl = hl->next)
+ for (hostlist_t *hl = hostlist_head; hl != NULL; hl = hl->next)
{
hl->pkg_sent = 0;
hl->pkg_recv = 0;
return (-1);
} /* if (ping_thread_error != 0) */
- for (hl = hostlist_head; hl != NULL; hl = hl->next) /* {{{ */
+ for (hostlist_t *hl = hostlist_head; hl != NULL; hl = hl->next) /* {{{ */
{
uint32_t pkg_sent;
uint32_t pkg_recv;
hl = hl_next;
}
+ if (ping_data != NULL) {
+ free (ping_data);
+ ping_data = NULL;
+ }
+
return (0);
} /* }}} int ping_shutdown */
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