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diff --git a/src/write_graphite.c b/src/write_graphite.c
index 6b16bec215539245220fa662352604aad4ecef83..546111bb1ba998f2122d424b1d92a42de273609e 100644 (file)
--- a/src/write_graphite.c
+++ b/src/write_graphite.c
* Copyright (C) 2011 Scott Sanders
* Copyright (C) 2009 Paul Sadauskas
* Copyright (C) 2009 Doug MacEachern
- * Copyright (C) 2007-2012 Florian octo Forster
+ * Copyright (C) 2007-2013 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
* <Carbon>
* Host "localhost"
* Port "2003"
+ * Protocol "udp"
+ * LogSendErrors true
* Prefix "collectd"
* </Carbon>
* </Plugin>
#include "configfile.h"
#include "utils_cache.h"
+#include "utils_complain.h"
#include "utils_parse_option.h"
+#include "utils_format_graphite.h"
/* Folks without pthread will need to disable this plugin. */
#include <pthread.h>
#include <sys/socket.h>
#include <netdb.h>
-#ifndef WG_FORMAT_NAME
-#define WG_FORMAT_NAME(ret, ret_len, vl, cb, ds_name) \
- wg_format_name (ret, ret_len, (vl)->host, \
- (vl)->plugin, (vl)->plugin_instance, \
- (vl)->type, (vl)->type_instance, \
- (cb)->prefix, (cb)->postfix, \
- ds_name, (cb)->escape_char)
-#endif
-
#ifndef WG_DEFAULT_NODE
# define WG_DEFAULT_NODE "localhost"
#endif
# define WG_DEFAULT_SERVICE "2003"
#endif
+#ifndef WG_DEFAULT_PROTOCOL
+# define WG_DEFAULT_PROTOCOL "udp"
+#endif
+
+#ifndef WG_DEFAULT_LOG_SEND_ERRORS
+# define WG_DEFAULT_LOG_SEND_ERRORS 1
+#endif
+
+#ifndef WG_DEFAULT_ESCAPE
+# define WG_DEFAULT_ESCAPE '_'
+#endif
+
+/* Ethernet - (IPv6 + TCP) = 1500 - (40 + 32) = 1428 */
#ifndef WG_SEND_BUF_SIZE
-# define WG_SEND_BUF_SIZE 4096
+# define WG_SEND_BUF_SIZE 1428
#endif
/*
{
int sock_fd;
+ char *name;
+
char *node;
char *service;
+ char *protocol;
+ _Bool log_send_errors;
char *prefix;
char *postfix;
char escape_char;
+ unsigned int format_flags;
+
char send_buf[WG_SEND_BUF_SIZE];
size_t send_buf_free;
size_t send_buf_fill;
cdtime_t send_buf_init_time;
pthread_mutex_t send_lock;
+ c_complain_t init_complaint;
};
static int wg_send_buffer (struct wg_callback *cb)
{
- int status = 0;
+ ssize_t status = 0;
- status = write (cb->sock_fd, cb->send_buf, strlen (cb->send_buf));
- if (status < 0)
+ status = swrite (cb->sock_fd, cb->send_buf, strlen (cb->send_buf));
+ if (cb->log_send_errors && status < 0)
{
- ERROR ("write_graphite plugin: send failed with "
- "status %i (%s)",
- status,
- strerror (errno));
+ char errbuf[1024];
+ ERROR ("write_graphite plugin: send to %s:%s (%s) failed with status %zi (%s)",
+ cb->node, cb->service, cb->protocol,
+ status, sstrerror (errno, errbuf, sizeof (errbuf)));
+
close (cb->sock_fd);
cb->sock_fd = -1;
return (-1);
}
+
return (0);
}
const char *node = cb->node ? cb->node : WG_DEFAULT_NODE;
const char *service = cb->service ? cb->service : WG_DEFAULT_SERVICE;
+ const char *protocol = cb->protocol ? cb->protocol : WG_DEFAULT_PROTOCOL;
if (cb->sock_fd > 0)
return (0);
ai_hints.ai_flags |= AI_ADDRCONFIG;
#endif
ai_hints.ai_family = AF_UNSPEC;
- ai_hints.ai_socktype = SOCK_STREAM;
+
+ if (0 == strcasecmp ("tcp", protocol))
+ ai_hints.ai_socktype = SOCK_STREAM;
+ else if (0 == strcasecmp ("udp", protocol))
+ ai_hints.ai_socktype = SOCK_DGRAM;
+ else
+ {
+ ERROR ("write_graphite plugin: unknown protocol (%s)",
+ protocol);
+ return (-1);
+ }
ai_list = NULL;
status = getaddrinfo (node, service, &ai_hints, &ai_list);
if (status != 0)
{
- ERROR ("write_graphite plugin: getaddrinfo (%s, %s) failed: %s",
- node, service, gai_strerror (status));
+ ERROR ("write_graphite plugin: getaddrinfo (%s, %s, %s) failed: %s",
+ node, service, protocol, gai_strerror (status));
return (-1);
}
if (cb->sock_fd < 0)
{
char errbuf[1024];
- ERROR ("write_graphite plugin: Connecting to %s:%s failed. "
- "The last error was: %s", node, service,
+ c_complain (LOG_ERR, &cb->init_complaint,
+ "write_graphite plugin: Connecting to %s:%s via %s failed. "
+ "The last error was: %s", node, service, protocol,
sstrerror (errno, errbuf, sizeof (errbuf)));
close (cb->sock_fd);
return (-1);
}
+ else
+ {
+ c_release (LOG_INFO, &cb->init_complaint,
+ "write_graphite plugin: Successfully connected to %s:%s via %s.",
+ node, service, protocol);
+ }
wg_reset_buffer (cb);
close(cb->sock_fd);
cb->sock_fd = -1;
+ sfree(cb->name);
sfree(cb->node);
+ sfree(cb->protocol);
sfree(cb->service);
sfree(cb->prefix);
sfree(cb->postfix);
status = wg_callback_init (cb);
if (status != 0)
{
- ERROR ("write_graphite plugin: wg_callback_init failed.");
+ /* An error message has already been printed. */
pthread_mutex_unlock (&cb->send_lock);
return (-1);
}
return (status);
}
-static int wg_format_values (char *ret, size_t ret_len,
- int ds_num, const data_set_t *ds, const value_list_t *vl,
- _Bool store_rates)
-{
- size_t offset = 0;
- int status;
- gauge_t *rates = NULL;
-
- assert (0 == strcmp (ds->type, vl->type));
-
- memset (ret, 0, ret_len);
-
-#define BUFFER_ADD(...) do { \
- status = ssnprintf (ret + offset, ret_len - offset, \
- __VA_ARGS__); \
- if (status < 1) \
- { \
- sfree (rates); \
- return (-1); \
- } \
- else if (((size_t) status) >= (ret_len - offset)) \
- { \
- sfree (rates); \
- return (-1); \
- } \
- else \
- offset += ((size_t) status); \
-} while (0)
-
- if (ds->ds[ds_num].type == DS_TYPE_GAUGE)
- BUFFER_ADD ("%f", vl->values[ds_num].gauge);
- else if (store_rates)
- {
- if (rates == NULL)
- rates = uc_get_rate (ds, vl);
- if (rates == NULL)
- {
- WARNING ("format_values: "
- "uc_get_rate failed.");
- return (-1);
- }
- BUFFER_ADD ("%g", rates[ds_num]);
- }
- else if (ds->ds[ds_num].type == DS_TYPE_COUNTER)
- BUFFER_ADD ("%llu", vl->values[ds_num].counter);
- else if (ds->ds[ds_num].type == DS_TYPE_DERIVE)
- BUFFER_ADD ("%"PRIi64, vl->values[ds_num].derive);
- else if (ds->ds[ds_num].type == DS_TYPE_ABSOLUTE)
- BUFFER_ADD ("%"PRIu64, vl->values[ds_num].absolute);
- else
- {
- ERROR ("format_values plugin: Unknown data source type: %i",
- ds->ds[ds_num].type);
- sfree (rates);
- return (-1);
- }
-
-#undef BUFFER_ADD
-
- sfree (rates);
- return (0);
-}
-
-static void wg_copy_escape_part (char *dst, const char *src, size_t dst_len,
- char escape_char)
-{
- size_t i;
-
- memset (dst, 0, dst_len);
-
- if (src == NULL)
- return;
-
- for (i = 0; i < dst_len; i++)
- {
- if ((src[i] == '.')
- || isspace ((int) src[i])
- || iscntrl ((int) src[i]))
- dst[i] = escape_char;
- else
- dst[i] = src[i];
-
- if (src[i] == 0)
- break;
- }
-}
-
-static int wg_format_name (char *ret, int ret_len,
- const char *hostname,
- const char *plugin, const char *plugin_instance,
- const char *type, const char *type_instance,
- const char *prefix, const char *postfix,
- const char *ds_name, char escape_char)
-{
- char n_hostname[DATA_MAX_NAME_LEN];
- char n_plugin[DATA_MAX_NAME_LEN];
- char n_plugin_instance[DATA_MAX_NAME_LEN];
- char n_type[DATA_MAX_NAME_LEN];
- char n_type_instance[DATA_MAX_NAME_LEN];
- int status;
-
- assert (hostname != NULL);
- assert (plugin != NULL);
- assert (type != NULL);
- assert (ds_name != NULL);
-
- if (prefix == NULL)
- prefix = "";
-
- if (postfix == NULL)
- postfix = "";
-
- wg_copy_escape_part (n_hostname, hostname,
- sizeof (n_hostname), escape_char);
- wg_copy_escape_part (n_plugin, plugin,
- sizeof (n_plugin), escape_char);
- wg_copy_escape_part (n_plugin_instance, plugin_instance,
- sizeof (n_plugin_instance), escape_char);
- wg_copy_escape_part (n_type, type,
- sizeof (n_type), escape_char);
- wg_copy_escape_part (n_type_instance, type_instance,
- sizeof (n_type_instance), escape_char);
-
- if (n_plugin_instance[0] == '\0')
- {
- if (n_type_instance[0] == '\0')
- {
- status = ssnprintf (ret, ret_len, "%s%s%s.%s.%s.%s",
- prefix, n_hostname, postfix, n_plugin, n_type, ds_name);
- }
- else
- {
- status = ssnprintf (ret, ret_len, "%s%s%s.%s.%s-%s.%s",
- prefix, n_hostname, postfix, n_plugin, n_type,
- n_type_instance, ds_name);
- }
- }
- else
- {
- if (n_type_instance[0] == '\0')
- {
- status = ssnprintf (ret, ret_len, "%s%s%s.%s.%s.%s.%s",
- prefix, n_hostname, postfix, n_plugin,
- n_plugin_instance, n_type, ds_name);
- }
- else
- {
- status = ssnprintf (ret, ret_len, "%s%s%s.%s.%s.%s-%s.%s",
- prefix, n_hostname, postfix, n_plugin,
- n_plugin_instance, n_type, n_type_instance, ds_name);
- }
- }
-
- if ((status < 1) || (status >= ret_len))
- return (-1);
-
- return (0);
-}
-
-static int wg_send_message (const char* key, const char* value,
- cdtime_t time, struct wg_callback *cb)
+static int wg_send_message (char const *message, struct wg_callback *cb)
{
int status;
size_t message_len;
- char message[1024];
-
- message_len = (size_t) ssnprintf (message, sizeof (message),
- "%s %s %.0f\n",
- key,
- value,
- CDTIME_T_TO_DOUBLE(time));
- if (message_len >= sizeof (message)) {
- ERROR ("write_graphite plugin: message buffer too small: "
- "Need %zu bytes.", message_len + 1);
- return (-1);
- }
+ message_len = strlen (message);
pthread_mutex_lock (&cb->send_lock);
status = wg_callback_init (cb);
if (status != 0)
{
- ERROR ("write_graphite plugin: wg_callback_init failed.");
+ /* An error message has already been printed. */
pthread_mutex_unlock (&cb->send_lock);
return (-1);
}
return (status);
}
}
+
+ /* Assert that we have enough space for this message. */
assert (message_len < cb->send_buf_free);
/* `message_len + 1' because `message_len' does not include the
cb->send_buf_fill += message_len;
cb->send_buf_free -= message_len;
- DEBUG ("write_graphite plugin: <%s:%s> buf %zu/%zu (%g%%) \"%s\"",
+ DEBUG ("write_graphite plugin: [%s]:%s (%s) buf %zu/%zu (%.1f %%) \"%s\"",
cb->node,
cb->service,
+ cb->protocol,
cb->send_buf_fill, sizeof (cb->send_buf),
100.0 * ((double) cb->send_buf_fill) / ((double) sizeof (cb->send_buf)),
message);
- /* Check if we have enough space for this message. */
pthread_mutex_unlock (&cb->send_lock);
return (0);
static int wg_write_messages (const data_set_t *ds, const value_list_t *vl,
struct wg_callback *cb)
{
- char key[10*DATA_MAX_NAME_LEN];
- char values[512];
-
- int status, i;
+ char buffer[WG_SEND_BUF_SIZE];
+ int status;
if (0 != strcmp (ds->type, vl->type))
{
return -1;
}
- if (ds->ds_num > 1)
- {
- for (i = 0; i < ds->ds_num; i++)
- {
- /* Copy the identifier to `key' and escape it. */
- status = WG_FORMAT_NAME (key, sizeof (key), vl, cb, ds->ds[i].name);
- if (status != 0)
- {
- ERROR ("write_graphite plugin: error with format_name");
- return (status);
- }
-
- escape_string (key, sizeof (key));
- /* Convert the values to an ASCII representation and put that
- * into `values'. */
- status = wg_format_values (values, sizeof (values), i, ds, vl, 0);
- if (status != 0)
- {
- ERROR ("write_graphite plugin: error with "
- "wg_format_values");
- return (status);
- }
-
- /* Send the message to graphite */
- status = wg_send_message (key, values, vl->time, cb);
- if (status != 0)
- {
- ERROR ("write_graphite plugin: error with "
- "wg_send_message");
- return (status);
- }
- }
- }
- else
- {
- /* Copy the identifier to `key' and escape it. */
- status = WG_FORMAT_NAME (key, sizeof (key), vl, cb, NULL);
- if (status != 0)
- {
- ERROR ("write_graphite plugin: error with format_name");
- return (status);
- }
+ memset (buffer, 0, sizeof (buffer));
+ status = format_graphite (buffer, sizeof (buffer), ds, vl,
+ cb->prefix, cb->postfix, cb->escape_char, cb->format_flags);
+ if (status != 0) /* error message has been printed already. */
+ return (status);
- escape_string (key, sizeof (key));
- /* Convert the values to an ASCII representation and put that into
- * `values'. */
- status = wg_format_values (values, sizeof (values), 0, ds, vl, 0);
- if (status != 0)
- {
- ERROR ("write_graphite plugin: error with "
- "wg_format_values");
- return (status);
- }
-
- /* Send the message to graphite */
- status = wg_send_message (key, values, vl->time, cb);
- if (status != 0)
- {
- ERROR ("write_graphite plugin: error with "
- "wg_send_message");
- return (status);
- }
+ /* Send the message to graphite */
+ wg_send_message (buffer, cb);
+ if (status != 0)
+ {
+ /* An error message has already been printed. */
+ return (status);
}
return (0);
-}
+} /* int wg_write_messages */
static int wg_write (const data_set_t *ds, const value_list_t *vl,
user_data_t *user_data)
int status;
if (user_data == NULL)
- return (-EINVAL);
+ return (EINVAL);
cb = user_data->data;
static int config_set_char (char *dest,
oconfig_item_t *ci)
{
- if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
+ char buffer[4];
+ int status;
+
+ memset (buffer, 0, sizeof (buffer));
+
+ status = cf_util_get_string_buffer (ci, buffer, sizeof (buffer));
+ if (status != 0)
+ return (status);
+
+ if (buffer[0] == 0)
{
- WARNING ("write_graphite plugin: The `%s' config option "
- "needs exactly one string argument.", ci->key);
+ ERROR ("write_graphite plugin: Cannot use an empty string for the "
+ "\"EscapeCharacter\" option.");
return (-1);
}
- *dest = ci->values[0].value.string[0];
+ if (buffer[1] != 0)
+ {
+ WARNING ("write_graphite plugin: Only the first character of the "
+ "\"EscapeCharacter\" option ('%c') will be used.",
+ (int) buffer[0]);
+ }
+
+ *dest = buffer[0];
return (0);
}
-static int wg_config_carbon (oconfig_item_t *ci)
+static int wg_config_node (oconfig_item_t *ci)
{
struct wg_callback *cb;
user_data_t user_data;
+ char callback_name[DATA_MAX_NAME_LEN];
int i;
cb = malloc (sizeof (*cb));
}
memset (cb, 0, sizeof (*cb));
cb->sock_fd = -1;
+ cb->name = NULL;
cb->node = NULL;
cb->service = NULL;
+ cb->protocol = NULL;
+ cb->log_send_errors = WG_DEFAULT_LOG_SEND_ERRORS;
cb->prefix = NULL;
cb->postfix = NULL;
- cb->escape_char = '_';
+ cb->escape_char = WG_DEFAULT_ESCAPE;
+ cb->format_flags = GRAPHITE_STORE_RATES;
+
+ /* FIXME: Legacy configuration syntax. */
+ if (strcasecmp ("Carbon", ci->key) != 0)
+ {
+ int status = cf_util_get_string (ci, &cb->name);
+ if (status != 0)
+ {
+ wg_callback_free (cb);
+ return (status);
+ }
+ }
pthread_mutex_init (&cb->send_lock, /* attr = */ NULL);
+ C_COMPLAIN_INIT (&cb->init_complaint);
for (i = 0; i < ci->children_num; i++)
{
if (strcasecmp ("Host", child->key) == 0)
cf_util_get_string (child, &cb->node);
else if (strcasecmp ("Port", child->key) == 0)
- cf_util_get_string (child, &cb->service);
+ cf_util_get_service (child, &cb->service);
+ else if (strcasecmp ("Protocol", child->key) == 0)
+ cf_util_get_string (child, &cb->protocol);
+ else if (strcasecmp ("LogSendErrors", child->key) == 0)
+ cf_util_get_boolean (child, &cb->log_send_errors);
else if (strcasecmp ("Prefix", child->key) == 0)
cf_util_get_string (child, &cb->prefix);
else if (strcasecmp ("Postfix", child->key) == 0)
cf_util_get_string (child, &cb->postfix);
+ else if (strcasecmp ("StoreRates", child->key) == 0)
+ cf_util_get_flag (child, &cb->format_flags,
+ GRAPHITE_STORE_RATES);
+ else if (strcasecmp ("SeparateInstances", child->key) == 0)
+ cf_util_get_flag (child, &cb->format_flags,
+ GRAPHITE_SEPARATE_INSTANCES);
+ else if (strcasecmp ("AlwaysAppendDS", child->key) == 0)
+ cf_util_get_flag (child, &cb->format_flags,
+ GRAPHITE_ALWAYS_APPEND_DS);
else if (strcasecmp ("EscapeCharacter", child->key) == 0)
config_set_char (&cb->escape_char, child);
else
}
}
- DEBUG ("write_graphite: Registering write callback to carbon agent %s:%s",
- cb->node ? cb->node : WG_DEFAULT_NODE,
- cb->service ? cb->service : WG_DEFAULT_SERVICE);
+ /* FIXME: Legacy configuration syntax. */
+ if (cb->name == NULL)
+ ssnprintf (callback_name, sizeof (callback_name), "write_graphite/%s/%s/%s",
+ cb->node != NULL ? cb->node : WG_DEFAULT_NODE,
+ cb->service != NULL ? cb->service : WG_DEFAULT_SERVICE,
+ cb->protocol != NULL ? cb->protocol : WG_DEFAULT_PROTOCOL);
+ else
+ ssnprintf (callback_name, sizeof (callback_name), "write_graphite/%s",
+ cb->name);
memset (&user_data, 0, sizeof (user_data));
user_data.data = cb;
- user_data.free_func = NULL;
- plugin_register_flush ("write_graphite", wg_flush, &user_data);
-
user_data.free_func = wg_callback_free;
- plugin_register_write ("write_graphite", wg_write, &user_data);
+ plugin_register_write (callback_name, wg_write, &user_data);
+
+ user_data.free_func = NULL;
+ plugin_register_flush (callback_name, wg_flush, &user_data);
return (0);
}
{
oconfig_item_t *child = ci->children + i;
- if (strcasecmp ("Carbon", child->key) == 0)
- wg_config_carbon (child);
+ if (strcasecmp ("Node", child->key) == 0)
+ wg_config_node (child);
+ /* FIXME: Remove this legacy mode in version 6. */
+ else if (strcasecmp ("Carbon", child->key) == 0)
+ wg_config_node (child);
else
{
ERROR ("write_graphite plugin: Invalid configuration "