/**
* collectd - src/network.c
- * Copyright (C) 2005-2007 Florian octo Forster
+ * Copyright (C) 2005-2008 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
};
typedef struct part_values_s part_values_t;
+ struct receive_list_entry_s
+ {
+ char data[BUFF_SIZE];
+ int data_len;
+ struct receive_list_entry_s *next;
+ };
+ typedef struct receive_list_entry_s receive_list_entry_t;
+
/*
* Private variables
*/
static sockent_t *sending_sockets = NULL;
+ static receive_list_entry_t *receive_list_head = NULL;
+ static receive_list_entry_t *receive_list_tail = NULL;
+ static pthread_mutex_t receive_list_lock = PTHREAD_MUTEX_INITIALIZER;
+ static pthread_cond_t receive_list_cond = PTHREAD_COND_INITIALIZER;
+
static struct pollfd *listen_sockets = NULL;
static int listen_sockets_num = 0;
- static pthread_t listen_thread = 0;
+
static int listen_loop = 0;
+ static pthread_t receive_thread_id = 0;
+ static pthread_t dispatch_thread_id = 0;
static char send_buffer[BUFF_SIZE];
static char *send_buffer_ptr;
|| (h_type == TYPE_PLUGIN)
|| (h_type == TYPE_PLUGIN_INSTANCE)
|| (h_type == TYPE_TYPE)
- || (h_type == TYPE_TYPE_INSTANCE));
+ || (h_type == TYPE_TYPE_INSTANCE)
+ || (h_type == TYPE_MESSAGE));
ps.value = buffer + 4;
if (ps.value[h_length - 5] != '\0')
value_list_t vl = VALUE_LIST_INIT;
char type[DATA_MAX_NAME_LEN];
+ notification_t n;
DEBUG ("network plugin: parse_packet: buffer = %p; buffer_len = %i;",
buffer, buffer_len);
memset (&vl, '\0', sizeof (vl));
memset (&type, '\0', sizeof (type));
+ memset (&n, '\0', sizeof (n));
status = 0;
- while ((status == 0) && (buffer_len > sizeof (part_header_t)))
+ while ((status == 0) && (0 < buffer_len)
+ && ((unsigned int) buffer_len > sizeof (part_header_t)))
{
header = (part_header_t *) buffer;
uint64_t tmp = 0;
status = parse_part_number (&buffer, &buffer_len, &tmp);
if (status == 0)
+ {
vl.time = (time_t) tmp;
+ n.time = (time_t) tmp;
+ }
}
else if (ntohs (header->type) == TYPE_INTERVAL)
{
{
status = parse_part_string (&buffer, &buffer_len,
vl.host, sizeof (vl.host));
- DEBUG ("network plugin: parse_packet: vl.host = %s", vl.host);
+ strncpy (n.host, vl.host, sizeof (n.host));
+ n.host[sizeof (n.host) - 1] = '\0';
+ DEBUG ("network plugin: parse_packet: vl.host = %s",
+ vl.host);
}
else if (ntohs (header->type) == TYPE_PLUGIN)
{
status = parse_part_string (&buffer, &buffer_len,
vl.plugin, sizeof (vl.plugin));
- DEBUG ("network plugin: parse_packet: vl.plugin = %s", vl.plugin);
+ strncpy (n.plugin, vl.plugin, sizeof (n.plugin));
+ n.plugin[sizeof (n.plugin) - 1] = '\0';
+ DEBUG ("network plugin: parse_packet: vl.plugin = %s",
+ vl.plugin);
}
else if (ntohs (header->type) == TYPE_PLUGIN_INSTANCE)
{
status = parse_part_string (&buffer, &buffer_len,
- vl.plugin_instance, sizeof (vl.plugin_instance));
- DEBUG ("network plugin: parse_packet: vl.plugin_instance = %s", vl.plugin_instance);
+ vl.plugin_instance,
+ sizeof (vl.plugin_instance));
+ strncpy (n.plugin_instance, vl.plugin_instance,
+ sizeof (n.plugin_instance));
+ n.plugin_instance[sizeof (n.plugin_instance) - 1] = '\0';
+ DEBUG ("network plugin: parse_packet: "
+ "vl.plugin_instance = %s",
+ vl.plugin_instance);
}
else if (ntohs (header->type) == TYPE_TYPE)
{
status = parse_part_string (&buffer, &buffer_len,
type, sizeof (type));
- DEBUG ("network plugin: parse_packet: type = %s", type);
+ strncpy (n.type, type, sizeof (n.type));
+ n.type[sizeof (n.type) - 1] = '\0';
+ DEBUG ("network plugin: parse_packet: type = %s",
+ type);
}
else if (ntohs (header->type) == TYPE_TYPE_INSTANCE)
{
status = parse_part_string (&buffer, &buffer_len,
- vl.type_instance, sizeof (vl.type_instance));
- DEBUG ("network plugin: parse_packet: vl.type_instance = %s", vl.type_instance);
+ vl.type_instance,
+ sizeof (vl.type_instance));
+ strncpy (n.type_instance, vl.type_instance,
+ sizeof (n.type_instance));
+ n.type_instance[sizeof (n.type_instance) - 1] = '\0';
+ DEBUG ("network plugin: parse_packet: "
+ "vl.type_instance = %s",
+ vl.type_instance);
+ }
+ else if (ntohs (header->type) == TYPE_MESSAGE)
+ {
+ status = parse_part_string (&buffer, &buffer_len,
+ n.message, sizeof (n.message));
+ DEBUG ("network plugin: parse_packet: n.message = %s",
+ n.message);
+
+ if ((n.severity != NOTIF_FAILURE)
+ && (n.severity != NOTIF_WARNING)
+ && (n.severity != NOTIF_OKAY))
+ {
+ INFO ("network plugin: "
+ "Ignoring notification with "
+ "unknown severity %s.",
+ n.severity);
+ }
+ else if (n.time <= 0)
+ {
+ INFO ("network plugin: "
+ "Ignoring notification with "
+ "time == 0.");
+ }
+ else if (strlen (n.message) <= 0)
+ {
+ INFO ("network plugin: "
+ "Ignoring notification with "
+ "an empty message.");
+ }
+ else
+ {
+ /*
+ * TODO: Let this do a separate thread so that
+ * no packets are lost if this takes too long.
+ */
+ plugin_dispatch_notification (&n);
+ }
+ }
+ else if (ntohs (header->type) == TYPE_SEVERITY)
+ {
+ uint64_t tmp = 0;
+ status = parse_part_number (&buffer, &buffer_len, &tmp);
+ if (status == 0)
+ n.severity = (int) tmp;
}
else
{
static int network_bind_socket (const sockent_t *se, const struct addrinfo *ai)
{
int loop = 0;
+ int yes = 1;
+
+ /* allow multiple sockets to use the same PORT number */
+ if (setsockopt(se->fd, SOL_SOCKET, SO_REUSEADDR,
+ &yes, sizeof(yes)) == -1) {
+ char errbuf[1024];
+ ERROR ("setsockopt: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ return (-1);
+ }
DEBUG ("fd = %i; calling `bind'", se->fd);
return (0);
} /* int network_get_listen_socket */
+ static void *dispatch_thread (void *arg)
+ {
+ while (42)
+ {
+ receive_list_entry_t *ent;
+
+ /* Lock and wait for more data to come in */
+ pthread_mutex_lock (&receive_list_lock);
+ while ((listen_loop == 0)
+ && (receive_list_head == NULL))
+ pthread_cond_wait (&receive_list_cond, &receive_list_lock);
+
+ /* Remove the head entry and unlock */
+ ent = receive_list_head;
+ if (ent != NULL)
+ receive_list_head = ent->next;
+ pthread_mutex_unlock (&receive_list_lock);
+
+ /* Check whether we are supposed to exit. We do NOT check `listen_loop'
+ * because we dispatch all missing packets before shutting down. */
+ if (ent == NULL)
+ break;
+
+ parse_packet (ent->data, ent->data_len);
+
+ sfree (ent);
+ } /* while (42) */
+
+ return (NULL);
+ } /* void *receive_thread */
+
static int network_receive (void)
{
char buffer[BUFF_SIZE];
for (i = 0; (i < listen_sockets_num) && (status > 0); i++)
{
+ receive_list_entry_t *ent;
+
if ((listen_sockets[i].revents & (POLLIN | POLLPRI)) == 0)
continue;
status--;
return (-1);
}
- parse_packet (buffer, buffer_len);
+ ent = malloc (sizeof (receive_list_entry_t));
+ if (ent == NULL)
+ {
+ ERROR ("network plugin: malloc failed.");
+ return (-1);
+ }
+ memset (ent, '\0', sizeof (receive_list_entry_t));
+
+ /* Hopefully this be optimized out by the compiler. It
+ * might help prevent stupid bugs in the future though.
+ */
+ assert (sizeof (ent->data) == sizeof (buffer));
+
+ memcpy (ent->data, buffer, buffer_len);
+ ent->data_len = buffer_len;
+
+ pthread_mutex_lock (&receive_list_lock);
+ if (receive_list_head == NULL)
+ {
+ receive_list_head = ent;
+ receive_list_tail = ent;
+ }
+ else
+ {
+ receive_list_tail->next = ent;
+ receive_list_tail = ent;
+ }
+ pthread_cond_signal (&receive_list_cond);
+ pthread_mutex_unlock (&receive_list_lock);
} /* for (listen_sockets) */
} /* while (listen_loop == 0) */
return (0);
} /* int network_config */
+static int network_notification (const notification_t *n)
+{
+ char buffer[BUFF_SIZE];
+ char *buffer_ptr = buffer;
+ int buffer_free = sizeof (buffer);
+ int status;
+
+ memset (buffer, '\0', sizeof (buffer));
+
+
+ status = write_part_number (&buffer_ptr, &buffer_free, TYPE_TIME,
+ (uint64_t) n->time);
+ if (status != 0)
+ return (-1);
+
+ status = write_part_number (&buffer_ptr, &buffer_free, TYPE_SEVERITY,
+ (uint64_t) n->severity);
+ if (status != 0)
+ return (-1);
+
+ if (strlen (n->host) > 0)
+ {
+ status = write_part_string (&buffer_ptr, &buffer_free, TYPE_HOST,
+ n->host, strlen (n->host));
+ if (status != 0)
+ return (-1);
+ }
+
+ if (strlen (n->plugin) > 0)
+ {
+ status = write_part_string (&buffer_ptr, &buffer_free, TYPE_PLUGIN,
+ n->plugin, strlen (n->plugin));
+ if (status != 0)
+ return (-1);
+ }
+
+ if (strlen (n->plugin_instance) > 0)
+ {
+ status = write_part_string (&buffer_ptr, &buffer_free,
+ TYPE_PLUGIN_INSTANCE,
+ n->plugin_instance, strlen (n->plugin_instance));
+ if (status != 0)
+ return (-1);
+ }
+
+ if (strlen (n->type) > 0)
+ {
+ status = write_part_string (&buffer_ptr, &buffer_free, TYPE_TYPE,
+ n->type, strlen (n->type));
+ if (status != 0)
+ return (-1);
+ }
+
+ if (strlen (n->type_instance) > 0)
+ {
+ status = write_part_string (&buffer_ptr, &buffer_free, TYPE_TYPE_INSTANCE,
+ n->type_instance, strlen (n->type_instance));
+ if (status != 0)
+ return (-1);
+ }
+
+ status = write_part_string (&buffer_ptr, &buffer_free, TYPE_MESSAGE,
+ n->message, strlen (n->message));
+ if (status != 0)
+ return (-1);
+
+ network_send_buffer (buffer, sizeof (buffer) - buffer_free);
+
+ return (0);
+} /* int network_notification */
+
static int network_shutdown (void)
{
listen_loop++;
- if (listen_thread != (pthread_t) 0)
+ /* Kill the listening thread */
+ if (receive_thread_id != (pthread_t) 0)
{
- pthread_kill (listen_thread, SIGTERM);
- pthread_join (listen_thread, NULL /* no return value */);
- listen_thread = (pthread_t) 0;
+ pthread_kill (receive_thread_id, SIGTERM);
+ pthread_join (receive_thread_id, NULL /* no return value */);
+ receive_thread_id = (pthread_t) 0;
}
+ /* Shutdown the dispatching thread */
+ if (dispatch_thread_id != (pthread_t) 0)
+ pthread_cond_broadcast (&receive_list_cond);
+
if (send_buffer_fill > 0)
flush_buffer ();
/* setup socket(s) and so on */
if (sending_sockets != NULL)
+ {
plugin_register_write ("network", network_write);
+ plugin_register_notification ("network", network_notification);
+ }
- if ((listen_sockets_num != 0) && (listen_thread == 0))
+ if ((listen_sockets_num != 0) && (receive_thread_id == 0))
{
int status;
- status = pthread_create (&listen_thread, NULL /* no attributes */,
- receive_thread, NULL /* no argument */);
+ status = pthread_create (&dispatch_thread_id,
+ NULL /* no attributes */,
+ dispatch_thread,
+ NULL /* no argument */);
+ if (status != 0)
+ {
+ char errbuf[1024];
+ ERROR ("network: pthread_create failed: %s",
+ sstrerror (errno, errbuf,
+ sizeof (errbuf)));
+ }
+ status = pthread_create (&receive_thread_id,
+ NULL /* no attributes */,
+ receive_thread,
+ NULL /* no argument */);
if (status != 0)
{
char errbuf[1024];
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