X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fethstat.c;h=8971f4dfcc2cb0cc10dbf7cf4c8e6ca271fbdc52;hb=354f9991530248e45207d236eb74c1cc3d5238ef;hp=d3343746a13f0aaefded13c801e55af1636e894c;hpb=da3b65f95d6e467c324a81afc62acba33f82e164;p=collectd.git

diff --git a/src/ethstat.c b/src/ethstat.c
index d3343746..8971f4df 100644
--- a/src/ethstat.c
+++ b/src/ethstat.c
@@ -1,6 +1,7 @@
 /**
  * collectd - src/ethstat.c
  * Copyright (C) 2011       Cyril Feraudet
+ * Copyright (C) 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
@@ -18,147 +19,349 @@
  *
  * Authors:
  *   Cyril Feraudet <cyril at feraudet.com>
+ *   Florian "octo" Forster <octo@collectd.org>
  **/
 
 #include "collectd.h"
 #include "common.h"
 #include "plugin.h"
 #include "configfile.h"
-#include "ethstat.h"
+#include "utils_avltree.h"
+#include "utils_complain.h"
 
-#include <sys/ioctl.h>
-#include <net/if.h>
-#include <linux/sockios.h>
+#if HAVE_SYS_IOCTL_H
+# include <sys/ioctl.h>
+#endif
+#if HAVE_NET_IF_H
+# include <net/if.h>
+#endif
+#if HAVE_LINUX_SOCKIOS_H
+# include <linux/sockios.h>
+#endif
+#if HAVE_LINUX_ETHTOOL_H
+# include <linux/ethtool.h>
+#endif
 
-static int ethstat_config (const char *key, const char *value)
+struct value_map_s
 {
-	if (strcasecmp (key, "Iface") == 0) {
-		ifacelist[ifacenumber] = malloc(strlen(value) + 1);
-		strcpy(ifacelist[ifacenumber++], value);
-		INFO("ethstat: Registred iface %s", value);
-	}
-	return (0);
-}
+  char type[DATA_MAX_NAME_LEN];
+  char type_instance[DATA_MAX_NAME_LEN];
+};
+typedef struct value_map_s value_map_t;
+
+static char **interfaces = NULL;
+static size_t interfaces_num = 0;
 
+static c_avl_tree_t *value_map = NULL;
 
-static void ethstat_submit_value (char *devname, char *counter, unsigned long long value)
+static _Bool collect_mapped_only = 0;
+
+static int ethstat_add_interface (const oconfig_item_t *ci) /* {{{ */
 {
-	value_t values[1];
-	value_list_t vl = VALUE_LIST_INIT;
+  char **tmp;
+  int status;
 
-	values[0].counter = value;
+  tmp = realloc (interfaces,
+      sizeof (*interfaces) * (interfaces_num + 1));
+  if (tmp == NULL)
+    return (-1);
+  interfaces = tmp;
+  interfaces[interfaces_num] = NULL;
 
-	vl.values = values;
-	vl.values_len = 1;
-	sstrncpy (vl.host, hostname_g, sizeof (vl.host));
-	sstrncpy (vl.plugin, "ethstat", sizeof (vl.plugin));
-	sstrncpy (vl.plugin_instance, devname, sizeof (vl.plugin_instance));
-	sstrncpy (vl.type, "derive", sizeof (vl.type));
-	sstrncpy (vl.type_instance, counter, sizeof (vl.type_instance));
+  status = cf_util_get_string (ci, interfaces + interfaces_num);
+  if (status != 0)
+    return (status);
 
-	plugin_dispatch_values (&vl);
-}
+  interfaces_num++;
+  INFO("ethstat plugin: Registered interface %s",
+      interfaces[interfaces_num - 1]);
+
+  return (0);
+} /* }}} int ethstat_add_interface */
+
+static int ethstat_add_map (const oconfig_item_t *ci) /* {{{ */
+{
+  value_map_t *map;
+  int status;
+  char *key;
+
+  if ((ci->values_num < 2)
+      || (ci->values_num > 3)
+      || (ci->values[0].type != OCONFIG_TYPE_STRING)
+      || (ci->values[1].type != OCONFIG_TYPE_STRING)
+      || ((ci->values_num == 3)
+        && (ci->values[2].type != OCONFIG_TYPE_STRING)))
+  {
+    ERROR ("ethstat plugin: The %s option requires "
+        "two or three string arguments.", ci->key);
+    return (-1);
+  }
+
+  key = strdup (ci->values[0].value.string);
+  if (key == NULL)
+  {
+    ERROR ("ethstat plugin: strdup(3) failed.");
+    return (ENOMEM);
+  }
+
+  map = calloc (1, sizeof (*map));
+  if (map == NULL)
+  {
+    sfree (key);
+    ERROR ("ethstat plugin: calloc failed.");
+    return (ENOMEM);
+  }
+
+  sstrncpy (map->type, ci->values[1].value.string, sizeof (map->type));
+  if (ci->values_num == 3)
+    sstrncpy (map->type_instance, ci->values[2].value.string,
+        sizeof (map->type_instance));
+
+  if (value_map == NULL)
+  {
+    value_map = c_avl_create ((void *) strcmp);
+    if (value_map == NULL)
+    {
+      sfree (map);
+      sfree (key);
+      ERROR ("ethstat plugin: c_avl_create() failed.");
+      return (-1);
+    }
+  }
+
+  status = c_avl_insert (value_map,
+      /* key = */ key,
+      /* value = */ map);
+  if (status != 0)
+  {
+    if (status > 0)
+      ERROR ("ethstat plugin: Multiple mappings for \"%s\".", key);
+    else
+      ERROR ("ethstat plugin: c_avl_insert(\"%s\") failed.", key);
+
+    sfree (map);
+    sfree (key);
+    return (-1);
+  }
+
+  return (0);
+} /* }}} int ethstat_add_map */
+
+static int ethstat_config (oconfig_item_t *ci) /* {{{ */
+{
+  int i;
+
+  for (i = 0; i < ci->children_num; i++)
+  {
+    oconfig_item_t *child = ci->children + i;
+
+    if (strcasecmp ("Interface", child->key) == 0)
+      ethstat_add_interface (child);
+    else if (strcasecmp ("Map", child->key) == 0)
+      ethstat_add_map (child);
+    else if (strcasecmp ("MappedOnly", child->key) == 0)
+      (void) cf_util_get_boolean (child, &collect_mapped_only);
+    else
+      WARNING ("ethstat plugin: The config option \"%s\" is unknown.",
+          child->key);
+  }
+
+  return (0);
+} /* }}} */
+
+static void ethstat_submit_value (const char *device,
+    const char *type_instance, derive_t value)
+{
+  static c_complain_t complain_no_map = C_COMPLAIN_INIT_STATIC;
+
+  value_t values[1];
+  value_list_t vl = VALUE_LIST_INIT;
+  value_map_t *map = NULL;
+
+  if (value_map != NULL)
+    c_avl_get (value_map, type_instance, (void *) &map);
+
+  /* If the "MappedOnly" option is specified, ignore unmapped values. */
+  if (collect_mapped_only && (map == NULL))
+  {
+    if (value_map == NULL)
+      c_complain (LOG_WARNING, &complain_no_map,
+          "ethstat plugin: The \"MappedOnly\" option has been set to true, "
+          "but no mapping has been configured. All values will be ignored!");
+    return;
+  }
 
+  values[0].derive = value;
+  vl.values = values;
+  vl.values_len = 1;
 
-static int getstats(char *devname, struct ifreq *ifr) {
-        int fd;
-	struct ethtool_drvinfo drvinfo;
-	struct ethtool_gstrings *strings;
-	struct ethtool_stats *stats;
-	unsigned int n_stats, sz_str, sz_stats, i;
-	int err;
-
-
-	fd = socket(AF_INET, SOCK_DGRAM, 0);
-        if (fd < 0) {
-                ERROR("ethstat - %s : Cannot get control socket", devname);
-                return 1;
-        }
-
-        drvinfo.cmd = ETHTOOL_GDRVINFO;
-        ifr->ifr_data = (caddr_t)&drvinfo;
-        err = ioctl(fd, SIOCETHTOOL, ifr);
-        if (err < 0) {
-                ERROR("ethstat - %s : Cannot get driver information", devname);
-                return 1;
-        }
-
-
-        n_stats = drvinfo.n_stats;
-        if (n_stats < 1) {
-                ERROR("ethstat - %s : No stats available", devname);
-                return 1;
-        }
-
-        sz_str = n_stats * ETH_GSTRING_LEN;
-        sz_stats = n_stats * sizeof(u64);
-
-        strings = calloc(1, sz_str + sizeof(struct ethtool_gstrings));
-        stats = calloc(1, sz_stats + sizeof(struct ethtool_stats));
-        if (!strings || !stats) {
-                ERROR("ethstat - %s No memory available", devname);
-                return 1;
-        }
-
-        strings->cmd = ETHTOOL_GSTRINGS;
-        strings->string_set = ETH_SS_STATS;
-        strings->len = n_stats;
-        ifr->ifr_data = (caddr_t) strings;
-        err = ioctl(fd, SIOCETHTOOL, ifr);
-        if (err < 0) {
-                ERROR("ethstat - %s : Cannot get stats strings information", devname);
-                free(strings);
-                free(stats);
-                return 96;
-        }
-
-        stats->cmd = ETHTOOL_GSTATS;
-        stats->n_stats = n_stats;
-        ifr->ifr_data = (caddr_t) stats;
-        err = ioctl(fd, SIOCETHTOOL, ifr);
-        if (err < 0) {
-                ERROR("ethstat - %s : Cannot get stats information", devname);
-                free(strings);
-                free(stats);
-                return 97;
-        }
-
-        for (i = 0; i < n_stats; i++) {
-                DEBUG("ethstat - %s : %s: %llu",
-			devname,
-                        &strings->data[i * ETH_GSTRING_LEN],
-                        stats->data[i]);
-		ethstat_submit_value (
-			devname,
-			(char*)&strings->data[i * ETH_GSTRING_LEN],
-			stats->data[i]);
-        }
-        free(strings);
-        free(stats);
-
-
-	return 0;
+  sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+  sstrncpy (vl.plugin, "ethstat", sizeof (vl.plugin));
+  sstrncpy (vl.plugin_instance, device, sizeof (vl.plugin_instance));
+  if (map != NULL)
+  {
+    sstrncpy (vl.type, map->type, sizeof (vl.type));
+    sstrncpy (vl.type_instance, map->type_instance,
+        sizeof (vl.type_instance));
+  }
+  else
+  {
+    sstrncpy (vl.type, "derive", sizeof (vl.type));
+    sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
+  }
+
+  plugin_dispatch_values (&vl);
 }
 
+static int ethstat_read_interface (char *device)
+{
+  int fd;
+  struct ifreq req;
+  struct ethtool_drvinfo drvinfo;
+  struct ethtool_gstrings *strings;
+  struct ethtool_stats *stats;
+  size_t n_stats;
+  size_t strings_size;
+  size_t stats_size;
+  size_t i;
+  int status;
+
+  memset (&req, 0, sizeof (req));
+  sstrncpy(req.ifr_name, device, sizeof (req.ifr_name));
+
+  fd = socket(AF_INET, SOCK_DGRAM, /* protocol = */ 0);
+  if (fd < 0)
+  {
+    char errbuf[1024];
+    ERROR("ethstat plugin: Failed to open control socket: %s",
+        sstrerror (errno, errbuf, sizeof (errbuf)));
+    return 1;
+  }
+
+  memset (&drvinfo, 0, sizeof (drvinfo));
+  drvinfo.cmd = ETHTOOL_GDRVINFO;
+  req.ifr_data = (void *) &drvinfo;
+  status = ioctl (fd, SIOCETHTOOL, &req);
+  if (status < 0)
+  {
+    char errbuf[1024];
+    close (fd);
+    ERROR ("ethstat plugin: Failed to get driver information "
+        "from %s: %s", device,
+        sstrerror (errno, errbuf, sizeof (errbuf)));
+    return (-1);
+  }
+
+  n_stats = (size_t) drvinfo.n_stats;
+  if (n_stats < 1)
+  {
+    close (fd);
+    ERROR("ethstat plugin: No stats available for %s", device);
+    return (-1);
+  }
+
+  strings_size = sizeof (struct ethtool_gstrings)
+    + (n_stats * ETH_GSTRING_LEN);
+  stats_size = sizeof (struct ethtool_stats)
+    + (n_stats * sizeof (uint64_t));
+
+  strings = malloc (strings_size);
+  stats = malloc (stats_size);
+  if ((strings == NULL) || (stats == NULL))
+  {
+    close (fd);
+    sfree (strings);
+    sfree (stats);
+    ERROR("ethstat plugin: malloc failed.");
+    return (-1);
+  }
+
+  strings->cmd = ETHTOOL_GSTRINGS;
+  strings->string_set = ETH_SS_STATS;
+  strings->len = n_stats;
+  req.ifr_data = (void *) strings;
+  status = ioctl (fd, SIOCETHTOOL, &req);
+  if (status < 0)
+  {
+    char errbuf[1024];
+    close (fd);
+    free (strings);
+    free (stats);
+    ERROR ("ethstat plugin: Cannot get strings from %s: %s",
+        device,
+        sstrerror (errno, errbuf, sizeof (errbuf)));
+    return (-1);
+  }
+
+  stats->cmd = ETHTOOL_GSTATS;
+  stats->n_stats = n_stats;
+  req.ifr_data = (void *) stats;
+  status = ioctl (fd, SIOCETHTOOL, &req);
+  if (status < 0)
+  {
+    char errbuf[1024];
+    close (fd);
+    free(strings);
+    free(stats);
+    ERROR("ethstat plugin: Reading statistics from %s failed: %s",
+        device,
+        sstrerror (errno, errbuf, sizeof (errbuf)));
+    return (-1);
+  }
+
+  for (i = 0; i < n_stats; i++)
+  {
+    const char *stat_name;
+
+    stat_name = (void *) &strings->data[i * ETH_GSTRING_LEN];
+    DEBUG("ethstat plugin: device = \"%s\": %s = %"PRIu64,
+        device, stat_name, (uint64_t) stats->data[i]);
+    ethstat_submit_value (device,
+        stat_name, (derive_t) stats->data[i]);
+  }
+
+  close (fd);
+  sfree (strings);
+  sfree (stats);
+
+  return (0);
+} /* }}} ethstat_read_interface */
 
 static int ethstat_read(void)
 {
-	struct ifreq ifr;
-	int i;
-
-	for (i = 0 ; i < ifacenumber ; i++) {
-		DEBUG("ethstat - Processing : %s\n", ifacelist[i]);
-		memset(&ifr, 0, sizeof(ifr));
-        	strcpy(ifr.ifr_name, ifacelist[i]);
-		getstats(ifacelist[i], &ifr);
-	}
-	return 0;
+  size_t i;
+
+  for (i = 0; i < interfaces_num; i++)
+    ethstat_read_interface (interfaces[i]);
+
+  return 0;
+}
+
+static int ethstat_shutdown (void)
+{
+  void *key = NULL;
+  void *value = NULL;
+
+  if (value_map == NULL)
+    return (0);
+
+  while (c_avl_pick (value_map, &key, &value) == 0)
+  {
+    sfree (key);
+    sfree (value);
+  }
+
+  c_avl_destroy (value_map);
+  value_map = NULL;
+
+  return (0);
 }
 
 void module_register (void)
 {
-	ifacelist = malloc(sizeof(char*));
-	plugin_register_config ("ethstat", ethstat_config,
-			config_keys, config_keys_num);
-	plugin_register_read ("ethstat", ethstat_read);
+  plugin_register_complex_config ("ethstat", ethstat_config);
+  plugin_register_read ("ethstat", ethstat_read);
+  plugin_register_shutdown ("ethstat", ethstat_shutdown);
 }
+
+/* vim: set sw=2 sts=2 et fdm=marker : */