/**
* collectd - src/apache.c
- * Copyright (C) 2006-2008 Florian octo Forster
- * Copyright (C) 2007 Florent EppO Monbillard
- * Copyright (C) 2009 Amit Gupta
+ * 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
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];
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) {
} /* apache_free */
static size_t apache_curl_callback (void *buf, size_t size, size_t nmemb,
- apache_t *st)
+ 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);
* URL ...
* </Plugin>
*/
-static int config_set_string (char **ret_string,
+static int config_set_string (char **ret_string, /* {{{ */
oconfig_item_t *ci)
{
char *string;
*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)
{
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)
return status;
} /* int config */
-
/* 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);
}
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 */
-
-static void set_plugin_instance (apache_t *st, value_list_t *vl)
-{
- /* if there is no instance name, don't set plugin_instance */
- if ( (st->name != NULL)
- && (apache_num > 0) )
- {
- sstrncpy (vl->plugin_instance, st->name, sizeof (vl->plugin_instance));
- }
-} /* void set_plugin */
-
-static void submit_counter (const char *type, const char *type_instance,
- counter_t value, apache_t *st)
-{
- value_t values[1];
value_list_t vl = VALUE_LIST_INIT;
- values[0].counter = value;
-
- vl.values = values;
+ vl.values = &value;
vl.values_len = 1;
- sstrncpy (vl.host, st->host, sizeof (vl.host));
+
+ sstrncpy (vl.host, (st->host != NULL) ? st->host : hostname_g,
+ sizeof (vl.host));
+
sstrncpy (vl.plugin, "apache", sizeof (vl.plugin));
- sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
- sstrncpy (vl.type, type, sizeof (vl.type));
+ if (st->name != NULL)
+ sstrncpy (vl.plugin_instance, st->name,
+ 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_instance (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, 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, st->host, sizeof (vl.host));
- sstrncpy (vl.plugin, "apache", sizeof (vl.plugin));
- 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_instance (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, int server, apache_t *st)
{
}
}
-static int apache_read_host (apache_t *st)
+static int apache_read_host (user_data_t *user_data) /* {{{ */
{
int i;
int fields_num;
int server = LIGHTTPD; /* default is lighttpd */
+ 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);
st->apache_buffer_fill = 0;
if (curl_easy_perform (st->curl) != 0)
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);
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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