/**
* 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;
static char send_buffer_type[DATA_MAX_NAME_LEN];
static pthread_mutex_t send_buffer_lock = PTHREAD_MUTEX_INITIALIZER;
-static avl_tree_t *cache_tree = NULL;
+static c_avl_tree_t *cache_tree = NULL;
static pthread_mutex_t cache_lock = PTHREAD_MUTEX_INITIALIZER;
-static time_t cache_flush_last;
+static time_t cache_flush_last = 0;
static int cache_flush_interval = 1800;
/*
char *key;
time_t *value;
- avl_iterator_t *iter;
+ c_avl_iterator_t *iter;
time_t curtime = time (NULL);
- iter = avl_get_iterator (cache_tree);
- while (avl_iterator_next (iter, (void *) &key, (void *) &value) == 0)
+ iter = c_avl_get_iterator (cache_tree);
+ while (c_avl_iterator_next (iter, (void *) &key, (void *) &value) == 0)
{
if ((curtime - *value) <= cache_flush_interval)
continue;
if (tmp == NULL)
{
sfree (keys);
- avl_iterator_destroy (iter);
+ c_avl_iterator_destroy (iter);
ERROR ("network plugin: cache_flush: realloc"
" failed.");
return (-1);
keys = tmp;
keys[keys_num] = key;
keys_num++;
- } /* while (avl_iterator_next) */
- avl_iterator_destroy (iter);
+ } /* while (c_avl_iterator_next) */
+ c_avl_iterator_destroy (iter);
for (i = 0; i < keys_num; i++)
{
- if (avl_remove (cache_tree, keys[i], (void *) &key,
+ if (c_avl_remove (cache_tree, keys[i], (void *) &key,
(void *) &value) != 0)
{
- WARNING ("network plugin: cache_flush: avl_remove"
+ WARNING ("network plugin: cache_flush: c_avl_remove"
" (%s) failed.", keys[i]);
continue;
}
return (0);
} /* int cache_flush */
-static int cache_check (const char *type, const value_list_t *vl)
+static int cache_check (const value_list_t *vl)
{
char key[1024];
time_t *value = NULL;
return (-1);
if (format_name (key, sizeof (key), vl->host, vl->plugin,
- vl->plugin_instance, type, vl->type_instance))
+ vl->plugin_instance, vl->type, vl->type_instance))
return (-1);
pthread_mutex_lock (&cache_lock);
- if (avl_get (cache_tree, key, (void *) &value) == 0)
+ if (c_avl_get (cache_tree, key, (void *) &value) == 0)
{
if (*value < vl->time)
{
if ((key_copy != NULL) && (value != NULL))
{
*value = vl->time;
- avl_insert (cache_tree, key_copy, value);
+ c_avl_insert (cache_tree, key_copy, value);
retval = 0;
}
else
static int write_part_values (char **ret_buffer, int *ret_buffer_len,
const data_set_t *ds, const value_list_t *vl)
{
- part_values_t pv;
+ char *packet_ptr;
+ int packet_len;
+ int num_values;
+
+ part_header_t pkg_ph;
+ uint16_t pkg_num_values;
+ uint8_t *pkg_values_types;
+ value_t *pkg_values;
+
+ int offset;
int i;
- i = 6 + (9 * vl->values_len);
- if (*ret_buffer_len < i)
+ num_values = vl->values_len;
+ packet_len = sizeof (part_header_t) + sizeof (uint16_t)
+ + (num_values * sizeof (uint8_t))
+ + (num_values * sizeof (value_t));
+
+ if (*ret_buffer_len < packet_len)
+ return (-1);
+
+ pkg_values_types = (uint8_t *) malloc (num_values * sizeof (uint8_t));
+ if (pkg_values_types == NULL)
+ {
+ ERROR ("network plugin: write_part_values: malloc failed.");
return (-1);
- *ret_buffer_len -= i;
+ }
- pv.head = (part_header_t *) *ret_buffer;
- pv.num_values = (uint16_t *) (pv.head + 1);
- pv.values_types = (uint8_t *) (pv.num_values + 1);
- pv.values = (value_t *) (pv.values_types + vl->values_len);
- *ret_buffer = (void *) (pv.values + vl->values_len);
+ pkg_values = (value_t *) malloc (num_values * sizeof (value_t));
+ if (pkg_values == NULL)
+ {
+ free (pkg_values_types);
+ ERROR ("network plugin: write_part_values: malloc failed.");
+ return (-1);
+ }
- pv.head->type = htons (TYPE_VALUES);
- pv.head->length = htons (6 + (9 * vl->values_len));
- *pv.num_values = htons ((uint16_t) vl->values_len);
-
- for (i = 0; i < vl->values_len; i++)
+ pkg_ph.type = htons (TYPE_VALUES);
+ pkg_ph.length = htons (packet_len);
+
+ pkg_num_values = htons ((uint16_t) vl->values_len);
+
+ for (i = 0; i < num_values; i++)
{
if (ds->ds[i].type == DS_TYPE_COUNTER)
{
- pv.values_types[i] = DS_TYPE_COUNTER;
- pv.values[i].counter = htonll (vl->values[i].counter);
+ pkg_values_types[i] = DS_TYPE_COUNTER;
+ pkg_values[i].counter = htonll (vl->values[i].counter);
}
else
{
- pv.values_types[i] = DS_TYPE_GAUGE;
- pv.values[i].gauge = vl->values[i].gauge;
+ pkg_values_types[i] = DS_TYPE_GAUGE;
+ pkg_values[i].gauge = htond (vl->values[i].gauge);
}
- } /* for (values) */
+ }
+
+ /*
+ * Use `memcpy' to write everything to the buffer, because the pointer
+ * may be unaligned and some architectures, such as SPARC, can't handle
+ * that.
+ */
+ packet_ptr = *ret_buffer;
+ offset = 0;
+ memcpy (packet_ptr + offset, &pkg_ph, sizeof (pkg_ph));
+ offset += sizeof (pkg_ph);
+ memcpy (packet_ptr + offset, &pkg_num_values, sizeof (pkg_num_values));
+ offset += sizeof (pkg_num_values);
+ memcpy (packet_ptr + offset, pkg_values_types, num_values * sizeof (uint8_t));
+ offset += num_values * sizeof (uint8_t);
+ memcpy (packet_ptr + offset, pkg_values, num_values * sizeof (value_t));
+ offset += num_values * sizeof (value_t);
+
+ assert (offset == packet_len);
+
+ *ret_buffer = packet_ptr + packet_len;
+ *ret_buffer_len -= packet_len;
+
+ free (pkg_values_types);
+ free (pkg_values);
return (0);
} /* int write_part_values */
static int write_part_number (char **ret_buffer, int *ret_buffer_len,
int type, uint64_t value)
{
- part_number_t pn;
+ char *packet_ptr;
+ int packet_len;
+
+ part_header_t pkg_head;
+ uint64_t pkg_value;
+
+ int offset;
+
+ packet_len = sizeof (pkg_head) + sizeof (pkg_value);
- if (*ret_buffer_len < 12)
+ if (*ret_buffer_len < packet_len)
return (-1);
- pn.head = (part_header_t *) *ret_buffer;
- pn.value = (uint64_t *) (pn.head + 1);
+ pkg_head.type = htons (type);
+ pkg_head.length = htons (packet_len);
+ pkg_value = htonll (value);
- pn.head->type = htons (type);
- pn.head->length = htons (12);
- *pn.value = htonll (value);
+ packet_ptr = *ret_buffer;
+ offset = 0;
+ memcpy (packet_ptr + offset, &pkg_head, sizeof (pkg_head));
+ offset += sizeof (pkg_head);
+ memcpy (packet_ptr + offset, &pkg_value, sizeof (pkg_value));
+ offset += sizeof (pkg_value);
- *ret_buffer = (char *) (pn.value + 1);
- *ret_buffer_len -= 12;
+ assert (offset == packet_len);
+
+ *ret_buffer = packet_ptr + packet_len;
+ *ret_buffer_len -= packet_len;
return (0);
} /* int write_part_number */
static int write_part_string (char **ret_buffer, int *ret_buffer_len,
int type, const char *str, int str_len)
{
- part_string_t ps;
- int len;
+ char *buffer;
+ int buffer_len;
+
+ uint16_t pkg_type;
+ uint16_t pkg_length;
- len = 4 + str_len + 1;
- if (*ret_buffer_len < len)
+ int offset;
+
+ buffer_len = 2 * sizeof (uint16_t) + str_len + 1;
+ if (*ret_buffer_len < buffer_len)
return (-1);
- *ret_buffer_len -= len;
- ps.head = (part_header_t *) *ret_buffer;
- ps.value = (char *) (ps.head + 1);
+ pkg_type = htons (type);
+ pkg_length = htons (buffer_len);
+
+ buffer = *ret_buffer;
+ offset = 0;
+ memcpy (buffer + offset, (void *) &pkg_type, sizeof (pkg_type));
+ offset += sizeof (pkg_type);
+ memcpy (buffer + offset, (void *) &pkg_length, sizeof (pkg_length));
+ offset += sizeof (pkg_length);
+ memcpy (buffer + offset, str, str_len);
+ offset += str_len;
+ memset (buffer + offset, '\0', 1);
+ offset += 1;
- ps.head->type = htons ((uint16_t) type);
- ps.head->length = htons ((uint16_t) str_len + 5);
- if (str_len > 0)
- memcpy (ps.value, str, str_len);
- ps.value[str_len] = '\0';
- *ret_buffer = (void *) (ps.value + (str_len + 1));
+ assert (offset == buffer_len);
+
+ *ret_buffer = buffer + buffer_len;
+ *ret_buffer_len -= buffer_len;
return (0);
} /* int write_part_string */
{
char *buffer = *ret_buffer;
int buffer_len = *ret_buffer_len;
- part_values_t pv;
+
+ uint16_t tmp16;
+ size_t exp_size;
int i;
- uint16_t h_length;
- uint16_t h_type;
- uint16_t h_num;
+ uint16_t pkg_length;
+ uint16_t pkg_type;
+ uint16_t pkg_numval;
+
+ uint8_t *pkg_types;
+ value_t *pkg_values;
if (buffer_len < (15))
{
return (-1);
}
- pv.head = (part_header_t *) buffer;
- h_length = ntohs (pv.head->length);
- h_type = ntohs (pv.head->type);
+ memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
+ buffer += sizeof (tmp16);
+ pkg_type = ntohs (tmp16);
- assert (h_type == TYPE_VALUES);
+ memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
+ buffer += sizeof (tmp16);
+ pkg_length = ntohs (tmp16);
- pv.num_values = (uint16_t *) (pv.head + 1);
- h_num = ntohs (*pv.num_values);
+ memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
+ buffer += sizeof (tmp16);
+ pkg_numval = ntohs (tmp16);
- if (h_num != ((h_length - 6) / 9))
+ assert (pkg_type == TYPE_VALUES);
+
+ exp_size = 3 * sizeof (uint16_t)
+ + pkg_numval * (sizeof (uint8_t) + sizeof (value_t));
+ if (buffer_len < exp_size)
{
- DEBUG ("`length' and `num of values' don't match");
+ WARNING ("network plugin: parse_part_values: "
+ "Packet too short: "
+ "Chunk of size %u expected, "
+ "but buffer has only %i bytes left.",
+ (unsigned int) exp_size, buffer_len);
return (-1);
}
- pv.values_types = (uint8_t *) (pv.num_values + 1);
- pv.values = (value_t *) (pv.values_types + h_num);
+ if (pkg_length != exp_size)
+ {
+ WARNING ("network plugin: parse_part_values: "
+ "Length and number of values "
+ "in the packet don't match.");
+ return (-1);
+ }
- for (i = 0; i < h_num; i++)
- if (pv.values_types[i] == DS_TYPE_COUNTER)
- pv.values[i].counter = ntohll (pv.values[i].counter);
+ pkg_types = (uint8_t *) malloc (pkg_numval * sizeof (uint8_t));
+ pkg_values = (value_t *) malloc (pkg_numval * sizeof (value_t));
+ if ((pkg_types == NULL) || (pkg_values == NULL))
+ {
+ sfree (pkg_types);
+ sfree (pkg_values);
+ ERROR ("network plugin: parse_part_values: malloc failed.");
+ return (-1);
+ }
+
+ memcpy ((void *) pkg_types, (void *) buffer, pkg_numval * sizeof (uint8_t));
+ buffer += pkg_numval * sizeof (uint8_t);
+ memcpy ((void *) pkg_values, (void *) buffer, pkg_numval * sizeof (value_t));
+ buffer += pkg_numval * sizeof (value_t);
+
+ for (i = 0; i < pkg_numval; i++)
+ {
+ if (pkg_types[i] == DS_TYPE_COUNTER)
+ pkg_values[i].counter = ntohll (pkg_values[i].counter);
+ else if (pkg_types[i] == DS_TYPE_GAUGE)
+ pkg_values[i].gauge = ntohd (pkg_values[i].gauge);
+ }
- *ret_buffer = (void *) (pv.values + h_num);
- *ret_buffer_len = buffer_len - h_length;
- *ret_num_values = h_num;
- *ret_values = pv.values;
+ *ret_buffer = buffer;
+ *ret_buffer_len = buffer_len - pkg_length;
+ *ret_num_values = pkg_numval;
+ *ret_values = pkg_values;
+
+ sfree (pkg_types);
return (0);
} /* int parse_part_values */
static int parse_part_number (void **ret_buffer, int *ret_buffer_len,
uint64_t *value)
{
- part_number_t pn;
- uint16_t len;
+ char *buffer = *ret_buffer;
+ int buffer_len = *ret_buffer_len;
- pn.head = (part_header_t *) *ret_buffer;
- pn.value = (uint64_t *) (pn.head + 1);
+ uint16_t tmp16;
+ uint64_t tmp64;
+ size_t exp_size = 2 * sizeof (uint16_t) + sizeof (uint64_t);
- len = ntohs (pn.head->length);
- if (len != 12)
- return (-1);
- if (len > *ret_buffer_len)
+ uint16_t pkg_length;
+ uint16_t pkg_type;
+
+ if (buffer_len < exp_size)
+ {
+ WARNING ("network plugin: parse_part_number: "
+ "Packet too short: "
+ "Chunk of size %u expected, "
+ "but buffer has only %i bytes left.",
+ (unsigned int) exp_size, buffer_len);
return (-1);
- *value = ntohll (*pn.value);
+ }
+
+ memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
+ buffer += sizeof (tmp16);
+ pkg_type = ntohs (tmp16);
+
+ memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
+ buffer += sizeof (tmp16);
+ pkg_length = ntohs (tmp16);
+
+ memcpy ((void *) &tmp64, buffer, sizeof (tmp64));
+ buffer += sizeof (tmp64);
+ *value = ntohll (tmp64);
- *ret_buffer = (void *) (pn.value + 1);
- *ret_buffer_len -= len;
+ *ret_buffer = buffer;
+ *ret_buffer_len = buffer_len - pkg_length;
return (0);
} /* int parse_part_number */
{
char *buffer = *ret_buffer;
int buffer_len = *ret_buffer_len;
- part_string_t ps;
- uint16_t h_length;
- uint16_t h_type;
+ uint16_t tmp16;
+ size_t header_size = 2 * sizeof (uint16_t);
- DEBUG ("network plugin: parse_part_string: ret_buffer = %p;"
- " ret_buffer_len = %i; output = %p; output_len = %i;",
- *ret_buffer, *ret_buffer_len,
- (void *) output, output_len);
+ uint16_t pkg_length;
+ uint16_t pkg_type;
- ps.head = (part_header_t *) buffer;
+ if (buffer_len < header_size)
+ {
+ WARNING ("network plugin: parse_part_string: "
+ "Packet too short: "
+ "Chunk of at least size %u expected, "
+ "but buffer has only %i bytes left.",
+ (unsigned int) header_size, buffer_len);
+ return (-1);
+ }
- h_length = ntohs (ps.head->length);
- h_type = ntohs (ps.head->type);
+ memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
+ buffer += sizeof (tmp16);
+ pkg_type = ntohs (tmp16);
- DEBUG ("network plugin: parse_part_string: length = %hu; type = %hu;",
- h_length, h_type);
+ memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
+ buffer += sizeof (tmp16);
+ pkg_length = ntohs (tmp16);
- if (buffer_len < h_length)
+ /* Check that packet fits in the input buffer */
+ if (pkg_length > buffer_len)
{
- DEBUG ("packet is too short");
+ WARNING ("network plugin: parse_part_string: "
+ "Packet too big: "
+ "Chunk of size %hu received, "
+ "but buffer has only %i bytes left.",
+ pkg_length, buffer_len);
return (-1);
}
- assert ((h_type == TYPE_HOST)
- || (h_type == TYPE_PLUGIN)
- || (h_type == TYPE_PLUGIN_INSTANCE)
- || (h_type == TYPE_TYPE)
- || (h_type == TYPE_TYPE_INSTANCE));
-
- ps.value = buffer + 4;
- if (ps.value[h_length - 5] != '\0')
+
+ /* Check that pkg_length is in the valid range */
+ if (pkg_length <= header_size)
{
- DEBUG ("String does not end with a nullbyte");
+ WARNING ("network plugin: parse_part_string: "
+ "Packet too short: "
+ "Header claims this packet is only %hu "
+ "bytes long.", pkg_length);
return (-1);
}
- if (output_len < (h_length - 4))
+ /* Check that the package data fits into the output buffer.
+ * The previous if-statement ensures that:
+ * `pkg_length > header_size' */
+ if ((pkg_length - header_size) > output_len)
{
- DEBUG ("output buffer is too small");
+ WARNING ("network plugin: parse_part_string: "
+ "Output buffer too small.");
return (-1);
}
- strcpy (output, ps.value);
- DEBUG ("network plugin: parse_part_string: output = %s", output);
+ /* All sanity checks successfull, let's copy the data over */
+ output_len = pkg_length - header_size;
+ memcpy ((void *) output, (void *) buffer, output_len);
+ buffer += output_len;
- *ret_buffer = (void *) (buffer + h_length);
- *ret_buffer_len = buffer_len - h_length;
+ /* For some very weird reason '\0' doesn't do the trick on SPARC in
+ * this statement. */
+ if (output[output_len - 1] != 0)
+ {
+ WARNING ("network plugin: parse_part_string: "
+ "Received string does not end "
+ "with a NULL-byte.");
+ return (-1);
+ }
+
+ *ret_buffer = buffer;
+ *ret_buffer_len = buffer_len - pkg_length;
return (0);
} /* int parse_part_string */
static int parse_packet (void *buffer, int buffer_len)
{
- part_header_t *header;
int status;
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;
+ uint16_t pkg_length;
+ uint16_t pkg_type;
+
+ memcpy ((void *) &pkg_type,
+ (void *) buffer,
+ sizeof (pkg_type));
+ memcpy ((void *) &pkg_length,
+ (void *) (buffer + sizeof (pkg_type)),
+ sizeof (pkg_length));
- if (ntohs (header->length) > buffer_len)
+ pkg_length = ntohs (pkg_length);
+ pkg_type = ntohs (pkg_type);
+
+ if (pkg_length > buffer_len)
break;
- /* Assure that this loop terminates eventually */
- if (ntohs (header->length) < 4)
+ /* Ensure that this loop terminates eventually */
+ if (pkg_length < (2 * sizeof (uint16_t)))
break;
- if (ntohs (header->type) == TYPE_VALUES)
+ if (pkg_type == TYPE_VALUES)
{
status = parse_part_values (&buffer, &buffer_len,
&vl.values, &vl.values_len);
if (status != 0)
- {
- DEBUG ("parse_part_values failed.");
break;
- }
if ((vl.time > 0)
&& (strlen (vl.host) > 0)
&& (strlen (vl.plugin) > 0)
- && (strlen (type) > 0)
- && (cache_check (type, &vl) == 0))
+ && (strlen (vl.type) > 0)
+ && (cache_check (&vl) == 0))
{
- DEBUG ("network plugin: parse_packet:"
- " dispatching values");
- plugin_dispatch_values (type, &vl);
+ plugin_dispatch_values (&vl);
}
else
{
DEBUG ("network plugin: parse_packet:"
" NOT dispatching values");
}
+
+ sfree (vl.values);
}
- else if (ntohs (header->type) == TYPE_TIME)
+ else if (pkg_type == TYPE_TIME)
{
uint64_t tmp = 0;
- status = parse_part_number (&buffer, &buffer_len, &tmp);
+ 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)
+ else if (pkg_type == TYPE_INTERVAL)
{
uint64_t tmp = 0;
- status = parse_part_number (&buffer, &buffer_len, &tmp);
+ status = parse_part_number (&buffer, &buffer_len,
+ &tmp);
if (status == 0)
vl.interval = (int) tmp;
}
- else if (ntohs (header->type) == TYPE_HOST)
+ else if (pkg_type == TYPE_HOST)
{
status = parse_part_string (&buffer, &buffer_len,
vl.host, sizeof (vl.host));
- DEBUG ("network plugin: parse_packet: vl.host = %s", vl.host);
+ if (status == 0)
+ sstrncpy (n.host, vl.host, sizeof (n.host));
}
- else if (ntohs (header->type) == TYPE_PLUGIN)
+ else if (pkg_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);
+ if (status == 0)
+ sstrncpy (n.plugin, vl.plugin,
+ sizeof (n.plugin));
+ }
+ else if (pkg_type == TYPE_PLUGIN_INSTANCE)
+ {
+ status = parse_part_string (&buffer, &buffer_len,
+ vl.plugin_instance,
+ sizeof (vl.plugin_instance));
+ if (status == 0)
+ sstrncpy (n.plugin_instance,
+ vl.plugin_instance,
+ sizeof (n.plugin_instance));
}
- else if (ntohs (header->type) == TYPE_PLUGIN_INSTANCE)
+ else if (pkg_type == TYPE_TYPE)
{
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.type, sizeof (vl.type));
+ if (status == 0)
+ sstrncpy (n.type, vl.type, sizeof (n.type));
}
- else if (ntohs (header->type) == TYPE_TYPE)
+ else if (pkg_type == TYPE_TYPE_INSTANCE)
{
status = parse_part_string (&buffer, &buffer_len,
- type, sizeof (type));
- DEBUG ("network plugin: parse_packet: type = %s", type);
+ vl.type_instance,
+ sizeof (vl.type_instance));
+ if (status == 0)
+ sstrncpy (n.type_instance, vl.type_instance,
+ sizeof (n.type_instance));
}
- else if (ntohs (header->type) == TYPE_TYPE_INSTANCE)
+ else if (pkg_type == TYPE_MESSAGE)
{
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);
+ n.message, sizeof (n.message));
+
+ if (status != 0)
+ {
+ /* do nothing */
+ }
+ else if ((n.severity != NOTIF_FAILURE)
+ && (n.severity != NOTIF_WARNING)
+ && (n.severity != NOTIF_OKAY))
+ {
+ INFO ("network plugin: "
+ "Ignoring notification with "
+ "unknown severity %i.",
+ 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
+ {
+ plugin_dispatch_notification (&n);
+ }
+ }
+ else if (pkg_type == TYPE_SEVERITY)
+ {
+ uint64_t tmp = 0;
+ status = parse_part_number (&buffer, &buffer_len,
+ &tmp);
+ if (status == 0)
+ n.severity = (int) tmp;
}
else
{
DEBUG ("network plugin: parse_packet: Unknown part"
- " type: 0x%0hx", ntohs (header->type));
- buffer = ((char *) buffer) + ntohs (header->length);
+ " type: 0x%04hx", pkg_type);
+ buffer = ((char *) buffer) + pkg_length;
}
} /* while (buffer_len > sizeof (part_header_t)) */
- return (0);
+ return (status);
} /* int parse_packet */
static void free_sockent (sockent_t *se)
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 */
-int network_receive (void)
+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];
int buffer_len;
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) */
(uint64_t) vl->interval))
return (-1);
vl_def->interval = vl->interval;
- DEBUG ("network plugin: add_to_buffer: interval = %i",
- (int) vl->interval);
}
if (strcmp (vl_def->plugin, vl->plugin) != 0)
strcpy (vl_def->plugin_instance, vl->plugin_instance);
}
- if (strcmp (type_def, ds->type) != 0)
+ if (strcmp (type_def, vl->type) != 0)
{
if (write_part_string (&buffer, &buffer_size, TYPE_TYPE,
- ds->type, strlen (ds->type)) != 0)
+ vl->type, strlen (vl->type)) != 0)
return (-1);
- strcpy (type_def, ds->type);
+ strcpy (type_def, vl->type);
}
if (strcmp (vl_def->type_instance, vl->type_instance) != 0)
/* If the value is already in the cache, we have received it via the
* network. We write it again if forwarding is activated. It's then in
* the cache and should we receive it again we will ignore it. */
- status = cache_check (ds->type, vl);
+ status = cache_check (vl);
if ((network_config_forward == 0)
&& (status != 0))
return (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 ();
void *key;
void *value;
- while (avl_pick (cache_tree, &key, &value) == 0)
+ while (c_avl_pick (cache_tree, &key, &value) == 0)
{
sfree (key);
sfree (value);
}
- avl_destroy (cache_tree);
+ c_avl_destroy (cache_tree);
cache_tree = NULL;
}
plugin_unregister_write ("network");
plugin_unregister_shutdown ("network");
+ /* Let the init function do it's move again ;) */
+ cache_flush_last = 0;
+
return (0);
} /* int network_shutdown */
static int network_init (void)
{
+ /* Check if we were already initialized. If so, just return - there's
+ * nothing more to do (for now, that is). */
+ if (cache_flush_last != 0)
+ return (0);
+
plugin_register_shutdown ("network", network_shutdown);
send_buffer_ptr = send_buffer;
memset (&send_buffer_vl, '\0', sizeof (send_buffer_vl));
memset (send_buffer_type, '\0', sizeof (send_buffer_type));
- cache_tree = avl_create ((int (*) (const void *, const void *)) strcmp);
+ cache_tree = c_avl_create ((int (*) (const void *, const void *)) strcmp);
cache_flush_last = time (NULL);
/* 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];
return (0);
} /* int network_init */
+/*
+ * The flush option of the network plugin cannot flush individual identifiers.
+ * All the values are added to a buffer and sent when the buffer is full, the
+ * requested value may or may not be in there, it's not worth finding out. We
+ * just send the buffer if `flush' is called - if the requested value was in
+ * there, good. If not, well, then there is nothing to flush.. -octo
+ */
+static int network_flush (int timeout, const char *identifier)
+{
+ pthread_mutex_lock (&send_buffer_lock);
+
+ if (((time (NULL) - cache_flush_last) >= timeout)
+ && (send_buffer_fill > 0))
+ {
+ flush_buffer ();
+ }
+
+ pthread_mutex_unlock (&send_buffer_lock);
+
+ return (0);
+} /* int network_flush */
+
void module_register (void)
{
plugin_register_config ("network", network_config,
config_keys, config_keys_num);
plugin_register_init ("network", network_init);
+ plugin_register_flush ("network", network_flush);
} /* void module_register */
projects / collectd.git / blobdiff