/**
* collectd - src/apache.c
- * Copyright (C) 2006-2008 Florian octo Forster
- * Copyright (C) 2007 Florent EppO Monbillard
+ * Copyright (C) 2006-2009 Florian octo Forster
+ * Copyright (C) 2007 Florent EppO Monbillard
+ * Copyright (C) 2009 Amit Gupta
*
* 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
* Florian octo Forster <octo at verplant.org>
* Florent EppO Monbillard <eppo at darox.net>
* - connections/lighttpd extension
+ * Amit Gupta <amit.gupta221 at gmail.com>
**/
#include "collectd.h"
#include <curl/curl.h>
-static char *url = NULL;
-static char *user = NULL;
-static char *pass = NULL;
-static char *verify_peer = NULL;
-static char *verify_host = NULL;
-static char *cacert = NULL;
-
-static CURL *curl = NULL;
-
-static char *apache_buffer = NULL;
-static size_t apache_buffer_size = 0;
-static size_t apache_buffer_fill = 0;
-static char apache_curl_error[CURL_ERROR_SIZE];
-
struct apache_s
{
char *name;
char *url;
char *user;
char *pass;
- char *verify_peer;
- char *verify_host;
+ int verify_peer;
+ int verify_host;
char *cacert;
+ char *apache_buffer;
+ char apache_curl_error[CURL_ERROR_SIZE];
+ size_t apache_buffer_size;
+ size_t apache_buffer_fill;
CURL *curl;
}; /* apache_s */
typedef struct apache_s apache_t;
-static apache_t **apache = NULL;
-static size_t apache_num = 0;
+/* TODO: Remove this prototype */
+static int apache_read_host (user_data_t *user_data);
static void apache_free (apache_t *st)
{
sfree (st->url);
sfree (st->user);
sfree (st->pass);
- sfree (st->verify_peer);
- sfree (st->verify_host);
sfree (st->cacert);
+ sfree (st->apache_buffer);
if (st->curl) {
curl_easy_cleanup(st->curl);
st->curl = NULL;
} /* apache_free */
static size_t apache_curl_callback (void *buf, size_t size, size_t nmemb,
- void __attribute__((unused)) *stream)
+ void *user_data)
{
size_t len = size * nmemb;
+ apache_t *st;
+
+ st = user_data;
+ if (st == NULL)
+ {
+ ERROR ("apache plugin: apache_curl_callback: "
+ "user_data pointer is NULL.");
+ return (0);
+ }
if (len <= 0)
return (len);
- if ((apache_buffer_fill + len) >= apache_buffer_size)
+ if ((st->apache_buffer_fill + len) >= st->apache_buffer_size)
{
char *temp;
- temp = (char *) realloc (apache_buffer,
- apache_buffer_fill + len + 1);
+ temp = (char *) realloc (st->apache_buffer,
+ st->apache_buffer_fill + len + 1);
if (temp == NULL)
{
ERROR ("apache plugin: realloc failed.");
return (0);
}
- apache_buffer = temp;
- apache_buffer_size = apache_buffer_fill + len + 1;
+ st->apache_buffer = temp;
+ st->apache_buffer_size = st->apache_buffer_fill + len + 1;
}
- memcpy (apache_buffer + apache_buffer_fill, (char *) buf, len);
- apache_buffer_fill += len;
- apache_buffer[apache_buffer_fill] = 0;
+ memcpy (st->apache_buffer + st->apache_buffer_fill, (char *) buf, len);
+ st->apache_buffer_fill += len;
+ st->apache_buffer[st->apache_buffer_fill] = 0;
return (len);
} /* int apache_curl_callback */
* </Instance>
* URL ...
* </Plugin>
- */
-static int config_set_string (char **ret_string,
+ */
+static int config_set_string (char **ret_string, /* {{{ */
oconfig_item_t *ci)
{
char *string;
if ((ci->values_num != 1)
- || (ci->values[0].type != OCONFIG_TYPE_STRING))
- {
- WARNING ("apache plugin: The `%s' config option "
- "needs exactly one string argument.", ci->key);
- return (-1);
- }
+ || (ci->values[0].type != OCONFIG_TYPE_STRING))
+ {
+ WARNING ("apache plugin: The `%s' config option "
+ "needs exactly one string argument.", ci->key);
+ return (-1);
+ }
string = strdup (ci->values[0].value.string);
if (string == NULL)
*ret_string = string;
return (0);
-} /* int config_set_string */
+} /* }}} int config_set_string */
+
+static int config_set_boolean (int *ret_boolean, /* {{{ */
+ oconfig_item_t *ci)
+{
+ if ((ci->values_num != 1)
+ || ((ci->values[0].type != OCONFIG_TYPE_BOOLEAN)
+ && (ci->values[0].type != OCONFIG_TYPE_STRING)))
+ {
+ WARNING ("apache plugin: The `%s' config option "
+ "needs exactly one boolean argument.", ci->key);
+ return (-1);
+ }
+
+ if (ci->values[0].type != OCONFIG_TYPE_BOOLEAN)
+ {
+ if (ci->values[0].value.boolean)
+ *ret_boolean = 1;
+ else
+ *ret_boolean = 0;
+ }
+ else /* if (ci->values[0].type != OCONFIG_TYPE_STRING) */
+ {
+ char *string = ci->values[0].value.string;
+ if ((strcasecmp ("true", string) == 0)
+ || (strcasecmp ("yes", string) == 0)
+ || (strcasecmp ("on", string) == 0))
+ *ret_boolean = 1;
+ else if ((strcasecmp ("false", string) == 0)
+ || (strcasecmp ("no", string) == 0)
+ || (strcasecmp ("off", string) == 0))
+ *ret_boolean = 0;
+ else
+ {
+ ERROR ("apache plugin: Cannot parse string "
+ "as boolean value: %s", string);
+ return (-1);
+ }
+ }
+
+ return (0);
+} /* }}} int config_set_boolean */
static int config_add (oconfig_item_t *ci)
{
status = config_set_string (&st->name, ci);
if (status != 0)
{
- sfree (st);
- return (status);
+ sfree (st);
+ return (status);
}
+ assert (st->name != NULL);
for (i = 0; i < ci->children_num; i++)
{
else if (strcasecmp ("Password", child->key) == 0)
status = config_set_string (&st->pass, child);
else if (strcasecmp ("VerifyPeer", child->key) == 0)
- status = config_set_string (&st->verify_peer, child);
+ status = config_set_boolean (&st->verify_peer, child);
else if (strcasecmp ("VerifyHost", child->key) == 0)
- status = config_set_string (&st->verify_host, child);
+ status = config_set_boolean (&st->verify_host, child);
else if (strcasecmp ("CACert", child->key) == 0)
status = config_set_string (&st->cacert, child);
else
{
- WARNING ("apache plugin: Option `%s' not allowed here.", child->key);
+ WARNING ("apache plugin: Option `%s' not allowed here.",
+ child->key);
status = -1;
}
break;
}
+ /* Check if struct is complete.. */
+ if ((status == 0) && (st->url == NULL))
+ {
+ ERROR ("apache plugin: Instance `%s': "
+ "No URL has been configured.",
+ st->name);
+ status = -1;
+ }
+
if (status == 0)
{
- apache_t **temp;
- temp = (apache_t **) realloc (apache, sizeof (*apache) * (apache_num + 1));
- if (temp == NULL)
- {
- ERROR ("apache plugin: realloc failed");
- status = -1;
- }
- else
- {
- apache = temp;
- apache[apache_num] = st;
- apache_num++;
- }
+ user_data_t ud;
+ char callback_name[3*DATA_MAX_NAME_LEN];
+
+ memset (&ud, 0, sizeof (ud));
+ ud.data = st;
+ ud.free_func = (void *) apache_free;
+
+ memset (callback_name, 0, sizeof (callback_name));
+ ssnprintf (callback_name, sizeof (callback_name),
+ "apache/%s/%s",
+ (st->host != NULL) ? st->host : hostname_g,
+ (st->name != NULL) ? st->name : "default"),
+
+ status = plugin_register_complex_read (callback_name,
+ /* callback = */ apache_read_host,
+ /* interval = */ NULL,
+ /* user_data = */ &ud);
}
if (status != 0)
}
memset (lci, '\0', sizeof (*lci));
}
- if (strcasecmp ("Instance", child->key) == 0)
- {
- lci->key = child->key;
- lci->values = child->values;
- lci->values_num = child->values_num;
- lci->parent = child->parent;
- }
- else
+
+ lci->children_num++;
+ lci->children =
+ realloc (lci->children,
+ lci->children_num * sizeof (*child));
+ if (lci->children == NULL)
{
- lci->children_num++;
- lci->children =
- realloc (lci->children,
- lci->children_num * sizeof (*child));
- if (lci->children == NULL)
- {
- ERROR ("apache plugin: realloc failed.");
- return (-1);
- }
- memcpy (&lci->children[lci->children_num-1], child, sizeof (*child));
+ ERROR ("apache plugin: realloc failed.");
+ return (-1);
}
+ memcpy (&lci->children[lci->children_num-1], child, sizeof (*child));
}
} /* for (ci->children) */
if (lci)
{
- // create a <Instance ""> entry
+ /* create a <Instance ""> entry */
lci->key = "Instance";
lci->values_num = 1;
lci->values = (oconfig_value_t *) malloc (lci->values_num * sizeof (oconfig_value_t));
lci->values[0].value.string = "";
status = config_add (lci);
+ sfree (lci->values);
sfree (lci->children);
sfree (lci);
}
return status;
} /* int config */
-
-// initialize curl for each host
+/* initialize curl for each host */
static int init_host (apache_t *st) /* {{{ */
{
static char credentials[1024];
- if (st->url == NULL)
- {
- WARNING ("apache plugin: init: No URL configured, returning "
- "an error.");
- return (-1);
- }
+ assert (st->url != NULL);
+ /* (Assured by `config_add') */
if (st->curl != NULL)
{
curl_easy_cleanup (st->curl);
+ st->curl = NULL;
}
if ((st->curl = curl_easy_init ()) == NULL)
{
- ERROR ("apache plugin: init: `curl_easy_init' failed.");
+ ERROR ("apache plugin: init_host: `curl_easy_init' failed.");
return (-1);
}
curl_easy_setopt (st->curl, CURLOPT_WRITEFUNCTION, apache_curl_callback);
+ curl_easy_setopt (st->curl, CURLOPT_WRITEDATA, st);
curl_easy_setopt (st->curl, CURLOPT_USERAGENT, PACKAGE_NAME"/"PACKAGE_VERSION);
- curl_easy_setopt (st->curl, CURLOPT_ERRORBUFFER, apache_curl_error);
+ curl_easy_setopt (st->curl, CURLOPT_ERRORBUFFER, st->apache_curl_error);
if (st->user != NULL)
{
st->user, (st->pass == NULL) ? "" : st->pass);
if ((status < 0) || ((size_t) status >= sizeof (credentials)))
{
- ERROR ("apache plugin: init: Returning an error "
+ ERROR ("apache plugin: init_host: Returning an error "
"because the credentials have been "
"truncated.");
+ curl_easy_cleanup (st->curl);
+ st->curl = NULL;
return (-1);
}
curl_easy_setopt (st->curl, CURLOPT_URL, st->url);
- if ((st->verify_peer == NULL) || (strcmp (st->verify_peer, "true") == 0))
+ if (st->verify_peer != 0)
{
curl_easy_setopt (st->curl, CURLOPT_SSL_VERIFYPEER, 1);
}
curl_easy_setopt (st->curl, CURLOPT_SSL_VERIFYPEER, 0);
}
- if ((st->verify_host == NULL) || (strcmp (st->verify_host, "true") == 0))
+ if (st->verify_host != 0)
{
curl_easy_setopt (st->curl, CURLOPT_SSL_VERIFYHOST, 2);
}
}
return (0);
-} /* int init_host */
+} /* }}} int init_host */
-static int init (void)
+static void submit_value (const char *type, const char *type_instance,
+ value_t value, apache_t *st)
{
- size_t i;
- int success = 0;
- int status;
-
- for (i = 0; i < apache_num; i++)
- {
- status = init_host (apache[i]);
- if (status == 0)
- success++;
- }
-
- if (success == 0)
- {
- ERROR ("apache plugin init: No host could be initialized. Will return an error so "
- "the plugin will be delayed.");
- return (-1);
- }
-
- return (0);
-} /* int init */
+ value_list_t vl = VALUE_LIST_INIT;
-static void set_plugin (apache_t *st, value_list_t *vl)
-{
- // if there is no instance name, assume apache
- if ( (0 == strcmp(st->name, "")) )
- {
- sstrncpy (vl->plugin, "apache", sizeof (vl->plugin));
- }
- else
- {
- sstrncpy (vl->plugin, st->name, sizeof (vl->plugin));
- }
-} /* void set_plugin */
+ vl.values = &value;
+ vl.values_len = 1;
-static void submit_counter (const char *type, const char *type_instance,
- counter_t value, char *host, apache_t *st)
-{
- value_t values[1];
- value_list_t vl = VALUE_LIST_INIT;
+ sstrncpy (vl.host, (st->host != NULL) ? st->host : hostname_g,
+ sizeof (vl.host));
- values[0].counter = value;
+ sstrncpy (vl.plugin, "apache", sizeof (vl.plugin));
+ if (st->name != NULL)
+ sstrncpy (vl.plugin_instance, st->name,
+ sizeof (vl.plugin_instance));
- vl.values = values;
- vl.values_len = 1;
- sstrncpy (vl.host, host, sizeof (vl.host));
- sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
sstrncpy (vl.type, type, sizeof (vl.type));
-
if (type_instance != NULL)
sstrncpy (vl.type_instance, type_instance,
sizeof (vl.type_instance));
- set_plugin (st, &vl);
-
plugin_dispatch_values (&vl);
+} /* void submit_value */
+
+static void submit_counter (const char *type, const char *type_instance,
+ counter_t c, apache_t *st)
+{
+ value_t v;
+ v.counter = c;
+ submit_value (type, type_instance, v, st);
} /* void submit_counter */
static void submit_gauge (const char *type, const char *type_instance,
- gauge_t value, char *host, apache_t *st)
+ gauge_t g, apache_t *st)
{
- value_t values[1];
- value_list_t vl = VALUE_LIST_INIT;
-
- values[0].gauge = value;
-
- vl.values = values;
- vl.values_len = 1;
- sstrncpy (vl.host, host, sizeof (vl.host));
- sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
- sstrncpy (vl.type, type, sizeof (vl.type));
-
- if (type_instance != NULL)
- sstrncpy (vl.type_instance, type_instance,
- sizeof (vl.type_instance));
-
- set_plugin (st, &vl);
-
- plugin_dispatch_values (&vl);
-} /* void submit_counter */
+ value_t v;
+ v.gauge = g;
+ submit_value (type, type_instance, v, st);
+} /* void submit_gauge */
-static void submit_scoreboard (char *buf, char *host, apache_t *st)
+static void submit_scoreboard (char *buf, apache_t *st)
{
/*
* Scoreboard Key:
else if (buf[i] == 'I') idle_cleanup++;
}
- submit_gauge ("apache_scoreboard", "open" , open, host, st);
- submit_gauge ("apache_scoreboard", "waiting" , waiting, host, st);
- submit_gauge ("apache_scoreboard", "starting" , starting, host, st);
- submit_gauge ("apache_scoreboard", "reading" , reading, host, st);
- submit_gauge ("apache_scoreboard", "sending" , sending, host, st);
- submit_gauge ("apache_scoreboard", "keepalive", keepalive, host, st);
- submit_gauge ("apache_scoreboard", "dnslookup", dnslookup, host, st);
- submit_gauge ("apache_scoreboard", "closing" , closing, host, st);
- submit_gauge ("apache_scoreboard", "logging" , logging, host, st);
- submit_gauge ("apache_scoreboard", "finishing", finishing, host, st);
- submit_gauge ("apache_scoreboard", "idle_cleanup", idle_cleanup, host, st);
+ submit_gauge ("apache_scoreboard", "open" , open, st);
+ submit_gauge ("apache_scoreboard", "waiting" , waiting, st);
+ submit_gauge ("apache_scoreboard", "starting" , starting, st);
+ submit_gauge ("apache_scoreboard", "reading" , reading, st);
+ submit_gauge ("apache_scoreboard", "sending" , sending, st);
+ submit_gauge ("apache_scoreboard", "keepalive", keepalive, st);
+ submit_gauge ("apache_scoreboard", "dnslookup", dnslookup, st);
+ submit_gauge ("apache_scoreboard", "closing" , closing, st);
+ submit_gauge ("apache_scoreboard", "logging" , logging, st);
+ submit_gauge ("apache_scoreboard", "finishing", finishing, st);
+ submit_gauge ("apache_scoreboard", "idle_cleanup", idle_cleanup, st);
}
-static int apache_read_host (apache_t *st)
+static int apache_read_host (user_data_t *user_data) /* {{{ */
{
int i;
int lines_num = 0;
char *fields[4];
- char *host;
int fields_num;
+ apache_t *st;
+
+ st = user_data->data;
+
+ assert (st->url != NULL);
+ /* (Assured by `config_add') */
+
if (st->curl == NULL)
- return (-1);
- if (st->url == NULL)
- return (-1);
+ {
+ int status;
+
+ status = init_host (st);
+ if (status != 0)
+ return (-1);
+ }
+ assert (st->curl != NULL);
- apache_buffer_fill = 0;
+ st->apache_buffer_fill = 0;
if (curl_easy_perform (st->curl) != 0)
{
ERROR ("apache: curl_easy_perform failed: %s",
- apache_curl_error);
+ st->apache_curl_error);
return (-1);
}
- ptr = apache_buffer;
+ ptr = st->apache_buffer;
saveptr = NULL;
while ((lines[lines_num] = strtok_r (ptr, "\n\r", &saveptr)) != NULL)
{
break;
}
- // set the host to localhost if st->host is not specified
- if ( (st->host == NULL)
- || (0 == strcmp(st->host, "")) ) {
- st->host = hostname_g;
- }
-
for (i = 0; i < lines_num; i++)
{
fields_num = strsplit (lines[i], fields, 4);
if ((strcmp (fields[0], "Total") == 0)
&& (strcmp (fields[1], "Accesses:") == 0))
submit_counter ("apache_requests", "",
- atoll (fields[2]), st->host, st);
+ atoll (fields[2]), st);
else if ((strcmp (fields[0], "Total") == 0)
&& (strcmp (fields[1], "kBytes:") == 0))
submit_counter ("apache_bytes", "",
- 1024LL * atoll (fields[2]), st->host, st);
+ 1024LL * atoll (fields[2]), st);
}
else if (fields_num == 2)
{
if (strcmp (fields[0], "Scoreboard:") == 0)
- submit_scoreboard (fields[1], st->host, st);
+ submit_scoreboard (fields[1], st);
else if (strcmp (fields[0], "BusyServers:") == 0)
- submit_gauge ("apache_connections", NULL, atol (fields[1]), st->host, st);
+ submit_gauge ("apache_connections", NULL, atol (fields[1]), st);
}
}
- apache_buffer_fill = 0;
+ st->apache_buffer_fill = 0;
return (0);
-} /* int apache_read_host */
-
-static int apache_read (void)
-{
- size_t i;
- int success = 0;
- int status;
-
- for (i = 0; i < apache_num; i++)
- {
- status = apache_read_host (apache[i]);
- if (status == 0)
- success++;
- }
-
- if (success == 0)
- {
- ERROR ("apache plugin: No host could be read. Will return an error so "
- "the plugin will be delayed.");
- return (-1);
- }
-
- return (0);
- } /* int apache_read */
+} /* }}} int apache_read_host */
void module_register (void)
{
plugin_register_complex_config ("apache", config);
- plugin_register_init ("apache", init);
- plugin_register_read ("apache", apache_read);
} /* void module_register */
+
+/* vim: set sw=8 noet fdm=marker : */
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