#include "collectd.h"
-#include "common.h"
#include "plugin.h"
+#include "utils/common/common.h"
+#include "utils/ignorelist/ignorelist.h"
#include "utils_complain.h"
-#include "utils_ignorelist.h"
#include <asm/types.h>
#include <errno.h>
uint32_t status;
uint32_t prev_status;
uint32_t sent;
- long long unsigned int timestamp;
+ cdtime_t timestamp;
struct interface_list_s *next;
};
static pthread_cond_t connectivity_cond = PTHREAD_COND_INITIALIZER;
static int nl_sock = -1;
static int event_id = 0;
-static int unsent_statuses = 0;
+static int statuses_to_send = 0;
static const char *config_keys[] = {"Interface", "IgnoreSelected"};
static int config_keys_num = STATIC_ARRAY_SIZE(config_keys);
/*
- * Prototype
- */
-
-static void
-connectivity_dispatch_notification(const char *interface, const char *type,
- gauge_t value, gauge_t old_value,
- long long unsigned int timestamp);
-
-/*
* Private functions
*/
static int gen_message_payload(int state, int old_state, const char *interface,
- long long unsigned int timestamp, char **buf) {
+ cdtime_t timestamp, char **buf) {
const unsigned char *buf2;
yajl_gen g;
char json_str[DATA_MAX_NAME_LEN];
#if !defined(HAVE_YAJL_V2)
- yajl_gen_config conf = {};
-
- conf.beautify = 0;
+ yajl_gen_config conf = {0};
#endif
#if HAVE_YAJL_V2
goto err;
event_id = event_id + 1;
- int event_id_len = sizeof(char) * sizeof(int) * 4 + 1;
- memset(json_str, '\0', DATA_MAX_NAME_LEN);
- snprintf(json_str, event_id_len, "%d", event_id);
+ if (snprintf(json_str, sizeof(json_str), "%d", event_id) < 0) {
+ goto err;
+ }
if (yajl_gen_number(g, json_str, strlen(json_str)) != yajl_gen_status_ok) {
goto err;
yajl_gen_status_ok)
goto err;
- int event_name_len = 0;
- event_name_len = event_name_len + strlen(interface); // interface name
- event_name_len = event_name_len + (state == 0 ? 4 : 2); // "down" or "up"
- event_name_len =
- event_name_len + 12; // "interface", 2 spaces and null-terminator
- memset(json_str, '\0', DATA_MAX_NAME_LEN);
- snprintf(json_str, event_name_len, "interface %s %s", interface,
- (state == 0 ? CONNECTIVITY_EVENT_NAME_DOWN_VALUE
- : CONNECTIVITY_EVENT_NAME_UP_VALUE));
+ if (snprintf(json_str, sizeof(json_str), "interface %s %s", interface,
+ (state == 0 ? CONNECTIVITY_EVENT_NAME_DOWN_VALUE
+ : CONNECTIVITY_EVENT_NAME_UP_VALUE)) < 0) {
+ goto err;
+ }
if (yajl_gen_string(g, (u_char *)json_str, strlen(json_str)) !=
yajl_gen_status_ok) {
yajl_gen_status_ok)
goto err;
- int last_epoch_microsec_len =
- sizeof(char) * sizeof(long long unsigned int) * 4 + 1;
- memset(json_str, '\0', DATA_MAX_NAME_LEN);
- snprintf(json_str, last_epoch_microsec_len, "%llu",
- (long long unsigned int)CDTIME_T_TO_US(cdtime()));
+ if (snprintf(json_str, sizeof(json_str), "%" PRIu64,
+ CDTIME_T_TO_US(cdtime())) < 0) {
+ goto err;
+ }
if (yajl_gen_number(g, json_str, strlen(json_str)) != yajl_gen_status_ok) {
goto err;
yajl_gen_status_ok)
goto err;
- int start_epoch_microsec_len =
- sizeof(char) * sizeof(long long unsigned int) * 4 + 1;
- memset(json_str, '\0', DATA_MAX_NAME_LEN);
- snprintf(json_str, start_epoch_microsec_len, "%llu",
- (long long unsigned int)timestamp);
+ if (snprintf(json_str, sizeof(json_str), "%" PRIu64,
+ CDTIME_T_TO_US(timestamp)) < 0) {
+ goto err;
+ }
if (yajl_gen_number(g, json_str, strlen(json_str)) != yajl_gen_status_ok) {
goto err;
(state == 0 ? strlen(CONNECTIVITY_NEW_STATE_FIELD_DOWN_VALUE)
: strlen(CONNECTIVITY_NEW_STATE_FIELD_UP_VALUE));
- if (yajl_gen_string(
- g, (u_char *)(state == 0 ? CONNECTIVITY_NEW_STATE_FIELD_DOWN_VALUE
- : CONNECTIVITY_NEW_STATE_FIELD_UP_VALUE),
- new_state_len) != yajl_gen_status_ok)
+ if (yajl_gen_string(g,
+ (u_char *)(state == 0
+ ? CONNECTIVITY_NEW_STATE_FIELD_DOWN_VALUE
+ : CONNECTIVITY_NEW_STATE_FIELD_UP_VALUE),
+ new_state_len) != yajl_gen_status_ok)
goto err;
// oldState
(old_state == 0 ? strlen(CONNECTIVITY_OLD_STATE_FIELD_DOWN_VALUE)
: strlen(CONNECTIVITY_OLD_STATE_FIELD_UP_VALUE));
- if (yajl_gen_string(
- g, (u_char *)(old_state == 0 ? CONNECTIVITY_OLD_STATE_FIELD_DOWN_VALUE
- : CONNECTIVITY_OLD_STATE_FIELD_UP_VALUE),
- old_state_len) != yajl_gen_status_ok)
+ if (yajl_gen_string(g,
+ (u_char *)(old_state == 0
+ ? CONNECTIVITY_OLD_STATE_FIELD_DOWN_VALUE
+ : CONNECTIVITY_OLD_STATE_FIELD_UP_VALUE),
+ old_state_len) != yajl_gen_status_ok)
goto err;
// stateChangeFieldsVersion
yajl_gen_status_ok)
goto err;
- if (yajl_gen_map_close(g) != yajl_gen_status_ok)
+ // close state change and header fields
+ if (yajl_gen_map_close(g) != yajl_gen_status_ok ||
+ yajl_gen_map_close(g) != yajl_gen_status_ok)
goto err;
// *** END state change fields ***
- if (yajl_gen_map_close(g) != yajl_gen_status_ok)
- goto err;
-
if (yajl_gen_get_buf(g, &buf2, &len) != yajl_gen_status_ok)
goto err;
il->interface = interface2;
il->status = status;
il->prev_status = prev_status;
- il->timestamp = (long long unsigned int)CDTIME_T_TO_US(cdtime());
+ il->timestamp = cdtime();
il->sent = 0;
il->next = interface_list_head;
interface_list_head = il;
}
}
- uint32_t prev_status;
-
- prev_status = il->status;
+ uint32_t prev_status = il->status;
il->status =
((ifi->ifi_flags & IFF_RUNNING) ? LINK_STATE_UP : LINK_STATE_DOWN);
- il->timestamp = (long long unsigned int)CDTIME_T_TO_US(cdtime());
+ il->timestamp = cdtime();
// If the new status is different than the previous status,
// store the previous status and set sent to zero, and set the
if (il->status != prev_status) {
il->prev_status = prev_status;
il->sent = 0;
- unsent_statuses = 1;
+ statuses_to_send = 1;
}
DEBUG("connectivity plugin (%llu): Interface %s status is now %s",
- il->timestamp, dev, ((ifi->ifi_flags & IFF_RUNNING) ? "UP" : "DOWN"));
+ (unsigned long long)il->timestamp, dev,
+ ((ifi->ifi_flags & IFF_RUNNING) ? "UP" : "DOWN"));
// no need to loop again, we found the interface name attr
// (otherwise the first if-statement in the loop would
}
static int msg_handler(struct nlmsghdr *msg) {
- switch (msg->nlmsg_type) {
- case RTM_NEWADDR:
- case RTM_DELADDR:
- case RTM_NEWROUTE:
- case RTM_DELROUTE:
- case RTM_DELLINK:
- // Not of interest in current version
- break;
- case RTM_NEWLINK:
- connectivity_link_state(msg);
- break;
- default:
- ERROR("connectivity plugin: msg_handler: Unknown netlink nlmsg_type %d",
- msg->nlmsg_type);
- break;
+ // We are only interested in RTM_NEWLINK messages
+ if (msg->nlmsg_type != RTM_NEWLINK) {
+ return 0;
}
- return 0;
+ return connectivity_link_state(msg);
}
-static int read_event(int nl, int (*msg_handler)(struct nlmsghdr *)) {
+static int read_event(int (*msg_handler)(struct nlmsghdr *)) {
int ret = 0;
int recv_flags = MSG_DONTWAIT;
- if (nl == -1)
- return ret;
+ if (nl_sock == -1 || msg_handler == NULL)
+ return EINVAL;
while (42) {
pthread_mutex_lock(&connectivity_threads_lock);
pthread_mutex_unlock(&connectivity_threads_lock);
char buf[4096];
- int status = recv(nl, buf, sizeof(buf), recv_flags);
+ int status = recv(nl_sock, buf, sizeof(buf), recv_flags);
if (status < 0) {
continue;
}
- if (errno == EINTR)
- {
- // Interrupt, so just return
- return 0;
+ if (errno == EINTR) {
+ // Interrupt, so just continue and try again
+ continue;
}
/* Anything else is an error */
/* Message is some kind of error */
if (h->nlmsg_type == NLMSG_ERROR) {
- ERROR("connectivity plugin: read_event: Message is an error");
+ struct nlmsgerr *l_err = (struct nlmsgerr *)NLMSG_DATA(h);
+ ERROR("connectivity plugin: read_event: Message is an error: %d",
+ l_err->error);
return -1; // Error
}
return ret;
}
+static void connectivity_dispatch_notification(const char *interface,
+ gauge_t value, gauge_t old_value,
+ cdtime_t timestamp) {
+
+ notification_t n = {
+ .severity = (value == LINK_STATE_UP ? NOTIF_OKAY : NOTIF_FAILURE),
+ .time = cdtime(),
+ .plugin = "connectivity",
+ .type = "gauge",
+ .type_instance = "interface_status",
+ };
+
+ sstrncpy(n.host, hostname_g, sizeof(n.host));
+ sstrncpy(n.plugin_instance, interface, sizeof(n.plugin_instance));
+
+ char *buf = NULL;
+
+ gen_message_payload(value, old_value, interface, timestamp, &buf);
+
+ int status = plugin_notification_meta_add_string(&n, "ves", buf);
+
+ if (status < 0) {
+ sfree(buf);
+ ERROR("connectivity plugin: unable to set notification VES metadata: %s",
+ STRERRNO);
+ return;
+ }
+
+ DEBUG("connectivity plugin: notification VES metadata: %s",
+ n.meta->nm_value.nm_string);
+
+ DEBUG("connectivity plugin: dispatching state %d for interface %s",
+ (int)value, interface);
+
+ plugin_dispatch_notification(&n);
+ plugin_notification_meta_free(n.meta);
+
+ // strdup'd in gen_message_payload
+ if (buf != NULL)
+ sfree(buf);
+}
+
// NOTE: Caller MUST hold connectivity_data_lock when calling this function
static void send_interface_status() {
for (interface_list_t *il = interface_list_head; il != NULL;
il = il->next) /* {{{ */
{
- uint32_t status;
- uint32_t prev_status;
- uint32_t sent;
-
- status = il->status;
- prev_status = il->prev_status;
- sent = il->sent;
+ uint32_t status = il->status;
+ uint32_t prev_status = il->prev_status;
+ uint32_t sent = il->sent;
if (status != prev_status && sent == 0) {
- connectivity_dispatch_notification(il->interface, "gauge", status,
- prev_status, il->timestamp);
+ connectivity_dispatch_notification(il->interface, status, prev_status,
+ il->timestamp);
il->sent = 1;
}
} /* }}} for (il = interface_list_head; il != NULL; il = il->next) */
- unsent_statuses = 0;
+ statuses_to_send = 0;
}
static void read_interface_status() /* {{{ */
{
pthread_mutex_lock(&connectivity_data_lock);
- if (!unsent_statuses)
+ // If we don't have any interface statuses to dispatch,
+ // then we wait until signalled
+ if (!statuses_to_send)
pthread_cond_wait(&connectivity_cond, &connectivity_data_lock);
send_interface_status();
while (connectivity_netlink_thread_loop > 0) {
pthread_mutex_unlock(&connectivity_threads_lock);
- int status = read_event(nl_sock, msg_handler);
+ int status = read_event(msg_handler);
pthread_mutex_lock(&connectivity_threads_lock);
static int nl_connect() {
struct sockaddr_nl sa_nl = {
- .nl_family = AF_NETLINK, .nl_groups = RTMGRP_LINK, .nl_pid = getpid(),
+ .nl_family = AF_NETLINK,
+ .nl_groups = RTMGRP_LINK,
+ .nl_pid = getpid(),
};
nl_sock = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
if (rc == -1) {
ERROR("connectivity plugin: socket bind failed: %s", STRERRNO);
close(nl_sock);
+ nl_sock = -1;
return -1;
}
if (status2 != 0) {
ERROR("connectivity plugin: failed to close socket %d: %d (%s)", nl_sock,
status2, STRERRNO);
- } else
- nl_sock = -1;
+ }
+
+ nl_sock = -1;
return -1;
}
if (socket_status != 0) {
ERROR("connectivity plugin: failed to close socket %d: %d (%s)", nl_sock,
socket_status, STRERRNO);
- } else
- nl_sock = -1;
+ }
+
+ nl_sock = -1;
} else
socket_status = 0;
return thread_status;
}
-static int stop_dequeue_thread(int shutdown) /* {{{ */
+static int stop_dequeue_thread() /* {{{ */
{
pthread_mutex_lock(&connectivity_threads_lock);
// on such that they'll see the threads termination status
pthread_cond_broadcast(&connectivity_cond);
- int status;
-
- if (shutdown == 1) {
- // Calling pthread_cancel here in
- // the case of a shutdown just assures that the thread is
- // gone and that the process has been fully terminated.
+ // Calling pthread_cancel here just assures that the thread is
+ // gone and that the process has been fully terminated.
- DEBUG("connectivity plugin: Canceling dequeue thread for process shutdown");
+ DEBUG("connectivity plugin: Canceling dequeue thread for process shutdown");
- status = pthread_cancel(connectivity_dequeue_thread_id);
+ int status = pthread_cancel(connectivity_dequeue_thread_id);
- if (status != 0 && status != ESRCH) {
- ERROR("connectivity plugin: Unable to cancel dequeue thread: %d", status);
- status = -1;
- } else
- status = 0;
- } else {
- status = pthread_join(connectivity_dequeue_thread_id, /* return = */ NULL);
- if (status != 0 && status != ESRCH) {
- ERROR("connectivity plugin: Stopping dequeue thread failed.");
- status = -1;
- } else
- status = 0;
- }
+ if (status != 0 && status != ESRCH) {
+ ERROR("connectivity plugin: Unable to cancel dequeue thread: %d", status);
+ status = -1;
+ } else
+ status = 0;
pthread_mutex_lock(&connectivity_threads_lock);
memset(&connectivity_dequeue_thread_id, 0,
return status;
} /* }}} int stop_dequeue_thread */
-static int stop_threads(int shutdown) /* {{{ */
+static int stop_threads() /* {{{ */
{
- int status = stop_netlink_thread(shutdown);
- int status2 = stop_dequeue_thread(shutdown);
+ int status = stop_netlink_thread(1);
+ int status2 = stop_dequeue_thread();
if (status != 0)
return status;
{
if (ignorelist == NULL) {
ignorelist = ignorelist_create(/* invert = */ 1);
+
+ if (ignorelist == NULL)
+ return -1;
}
if (strcasecmp(key, "Interface") == 0) {
return 0;
} /* }}} int connectivity_config */
-static void
-connectivity_dispatch_notification(const char *interface, const char *type,
- gauge_t value, gauge_t old_value,
- long long unsigned int timestamp) {
-
- notification_t n = {(value == LINK_STATE_UP ? NOTIF_OKAY : NOTIF_FAILURE),
- cdtime(),
- "",
- "",
- "connectivity",
- "",
- "",
- "",
- NULL};
-
- sstrncpy(n.host, hostname_g, sizeof(n.host));
- sstrncpy(n.plugin_instance, interface, sizeof(n.plugin_instance));
- sstrncpy(n.type, "gauge", sizeof(n.type));
- sstrncpy(n.type_instance, "interface_status", sizeof(n.type_instance));
-
- char *buf = NULL;
-
- gen_message_payload(value, old_value, interface, timestamp, &buf);
-
- notification_meta_t *m = calloc(1, sizeof(*m));
-
- if (m == NULL) {
- sfree(buf);
- ERROR("connectivity plugin: unable to allocate metadata: %s", STRERRNO);
- return;
- }
-
- sstrncpy(m->name, "ves", sizeof(m->name));
- m->nm_value.nm_string = sstrdup(buf);
- m->type = NM_TYPE_STRING;
- n.meta = m;
-
- DEBUG("connectivity plugin: notification message: %s",
- n.meta->nm_value.nm_string);
-
- DEBUG("connectivity plugin: dispatching state %d for interface %s",
- (int)value, interface);
-
- plugin_dispatch_notification(&n);
- plugin_notification_meta_free(n.meta);
-
- // strdup'd in gen_message_payload
- if (buf != NULL)
- sfree(buf);
-}
-
static int connectivity_read(void) /* {{{ */
{
pthread_mutex_lock(&connectivity_threads_lock);
{
DEBUG("connectivity plugin: Shutting down thread.");
- int status = stop_threads(1);
+ int status = stop_threads();
interface_list_t *il = interface_list_head;
while (il != NULL) {
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