From d699bec9841c88fcda04f08ce51fb8fc916df3d5 Mon Sep 17 00:00:00 2001 From: Florian Forster Date: Mon, 20 Apr 2009 19:52:19 +0200 Subject: [PATCH] apache plugin: Use the "complex read" interface. --- src/apache.c | 191 +++++++++++++++++++-------------------------------- 1 file changed, 69 insertions(+), 122 deletions(-) diff --git a/src/apache.c b/src/apache.c index 522a3e3a..f36f5141 100644 --- a/src/apache.c +++ b/src/apache.c @@ -1,8 +1,8 @@ /** * 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 @@ -50,8 +50,8 @@ struct 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) { @@ -207,19 +207,23 @@ static int config_add (oconfig_item_t *ci) 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) @@ -288,7 +292,6 @@ static int config (oconfig_item_t *ci) return status; } /* int config */ - /* initialize curl for each host */ static int init_host (apache_t *st) /* {{{ */ { @@ -296,7 +299,7 @@ static int init_host (apache_t *st) /* {{{ */ if (st->url == NULL) { - WARNING ("apache plugin: init: No URL configured, returning " + WARNING ("apache plugin: init_host: No URL configured, returning " "an error."); return (-1); } @@ -308,7 +311,7 @@ static int init_host (apache_t *st) /* {{{ */ 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); } @@ -325,9 +328,11 @@ static int init_host (apache_t *st) /* {{{ */ 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); } @@ -360,88 +365,47 @@ static int init_host (apache_t *st) /* {{{ */ } 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, apache_t *st) { @@ -494,7 +458,7 @@ static void submit_scoreboard (char *buf, apache_t *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; @@ -506,8 +470,20 @@ static int apache_read_host (apache_t *st) char *fields[4]; int fields_num; + apache_t *st; + + st = user_data->data; + if (st->curl == NULL) - return (-1); + { + int status; + + status = init_host (st); + if (status != 0) + return (-1); + } + assert (st->curl != NULL); + if (st->url == NULL) return (-1); @@ -530,12 +506,6 @@ static int apache_read_host (apache_t *st) 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); @@ -563,34 +533,11 @@ static int apache_read_host (apache_t *st) 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 : */ -- 2.30.2