+++ /dev/null
-/*
- * collectd - src/utils_logtail.c
- * Copyright (C) 2007-2008 C-Ware, Inc.
- * Copyright (C) 2008 Florian 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
- * Free Software Foundation; only version 2 of the License is applicable.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Author:
- * Luke Heberling <lukeh at c-ware.com>
- * Florian Forster <octo at verplant.org>
- *
- * Description:
- * Encapsulates useful code to plugins which must parse a log file.
- */
-
-#include "collectd.h"
-#include "common.h"
-#include "plugin.h"
-#include "utils_match.h"
-#include "utils_tail.h"
-#include "utils_logtail.h"
-
-struct cu_logtail_simple_s
-{
- char plugin[DATA_MAX_NAME_LEN];
- char plugin_instance[DATA_MAX_NAME_LEN];
- char type[DATA_MAX_NAME_LEN];
- char type_instance[DATA_MAX_NAME_LEN];
-};
-typedef struct cu_logtail_simple_s cu_logtail_simple_t;
-
-struct cu_logtail_match_s
-{
- cu_match_t *match;
- void *user_data;
- int (*submit) (cu_match_t *match, void *user_data);
- void (*free) (void *user_data);
-};
-typedef struct cu_logtail_match_s cu_logtail_match_t;
-
-struct cu_logtail_s
-{
- int flags;
- cu_tail_t *tail;
-
- cu_logtail_match_t *matches;
- size_t matches_num;
-};
-
-/*
- * Private functions
- */
-static int simple_submit_match (cu_match_t *match, void *user_data)
-{
- cu_logtail_simple_t *data = (cu_logtail_simple_t *) user_data;
- cu_match_value_t *match_value;
- value_list_t vl = VALUE_LIST_INIT;
- value_t values[1];
-
- match_value = (cu_match_value_t *) match_get_user_data (match);
- if (match_value == NULL)
- return (-1);
-
- values[0] = match_value->value;
-
- vl.values = values;
- vl.values_len = 1;
- vl.time = time (NULL);
- sstrncpy (vl.host, hostname_g, sizeof (vl.host));
- sstrncpy (vl.plugin, data->plugin, sizeof (vl.plugin));
- sstrncpy (vl.plugin_instance, data->plugin_instance,
- sizeof (vl.plugin_instance));
- sstrncpy (vl.type_instance, data->type_instance,
- sizeof (vl.type_instance));
-
- plugin_dispatch_values (data->type, &vl);
-
- return (0);
-} /* int simple_submit_match */
-
-static int tail_callback (void *data, char *buf, int buflen)
-{
- cu_logtail_t *obj = (cu_logtail_t *) data;
- int i;
-
- for (i = 0; i < obj->matches_num; i++)
- match_apply (obj->matches[i].match, buf);
-
- return (0);
-} /* int tail_callback */
-
-/*
- * Public functions
- */
-cu_logtail_t *logtail_create (const char *filename)
-{
- cu_logtail_t *obj;
-
- obj = (cu_logtail_t *) malloc (sizeof (cu_logtail_t));
- if (obj == NULL)
- return (NULL);
- memset (obj, '\0', sizeof (cu_logtail_t));
-
- obj->tail = cu_tail_create (filename);
- if (obj->tail == NULL)
- {
- sfree (obj);
- return (NULL);
- }
-
- return (obj);
-} /* cu_logtail_t *logtail_create */
-
-void logtail_destroy (cu_logtail_t *obj)
-{
- int i;
-
- if (obj == NULL)
- return;
-
- if (obj->tail != NULL)
- {
- cu_tail_destroy (obj->tail);
- obj->tail = NULL;
- }
-
- for (i = 0; i < obj->matches_num; i++)
- {
- cu_logtail_match_t *match = obj->matches + i;
- if (match->match != NULL)
- {
- match_destroy (match->match);
- match->match = NULL;
- }
-
- if ((match->user_data != NULL)
- && (match->free != NULL))
- (*match->free) (match->user_data);
- match->user_data = NULL;
- }
-
- sfree (obj->matches);
- sfree (obj);
-} /* void logtail_destroy */
-
-int logtail_add_match (cu_logtail_t *obj, cu_match_t *match,
- int (*submit_match) (cu_match_t *match, void *user_data),
- void *user_data,
- void (*free_user_data) (void *user_data))
-{
- cu_logtail_match_t *temp;
-
- temp = (cu_logtail_match_t *) realloc (obj->matches,
- sizeof (cu_logtail_match_t) * (obj->matches_num + 1));
- if (temp == NULL)
- return (-1);
-
- obj->matches = temp;
- obj->matches_num++;
-
- temp = obj->matches + (obj->matches_num - 1);
-
- temp->match = match;
- temp->user_data = user_data;
- temp->submit = submit_match;
- temp->free = free_user_data;
-
- return (0);
-} /* int logtail_add_match */
-
-int logtail_add_match_simple (cu_logtail_t *obj,
- const char *regex, int ds_type,
- const char *plugin, const char *plugin_instance,
- const char *type, const char *type_instance)
-{
- cu_match_t *match;
- cu_logtail_simple_t *user_data;
- int status;
-
- match = match_create_simple (regex, ds_type);
- if (match == NULL)
- return (-1);
-
- user_data = (cu_logtail_simple_t *) malloc (sizeof (cu_logtail_simple_t));
- if (user_data == NULL)
- {
- match_destroy (match);
- return (-1);
- }
- memset (user_data, '\0', sizeof (cu_logtail_simple_t));
-
- sstrncpy (user_data->plugin, plugin, sizeof (user_data->plugin));
- if (plugin_instance != NULL)
- sstrncpy (user_data->plugin_instance, plugin_instance,
- sizeof (user_data->plugin_instance));
-
- sstrncpy (user_data->type, type, sizeof (user_data->type));
- if (type_instance != NULL)
- sstrncpy (user_data->type_instance, type_instance,
- sizeof (user_data->type_instance));
-
- status = logtail_add_match (obj, match, simple_submit_match,
- user_data, free);
-
- if (status != 0)
- {
- match_destroy (match);
- sfree (user_data);
- }
-
- return (status);
-} /* int logtail_add_match_simple */
-
-int logtail_read (cu_logtail_t *obj)
-{
- char buffer[4096];
- int status;
- int i;
-
- status = cu_tail_read (obj->tail, buffer, sizeof (buffer), tail_callback,
- (void *) obj);
- if (status != 0)
- {
- ERROR ("logtail: cu_tail_read failed.");
- return (status);
- }
-
- for (i = 0; i < obj->matches_num; i++)
- {
- cu_logtail_match_t *lt_match = obj->matches + i;
-
- if (lt_match->submit == NULL)
- continue;
-
- (*lt_match->submit) (lt_match->match, lt_match->user_data);
- }
-
- return (0);
-} /* int logtail_read */
-
-/* vim: set sw=2 sts=2 ts=8 : */
projects / collectd.git / blobdiff