--- /dev/null
+/*
+ * collectd - src/utils_tail_match.c
+ * Copyright (C) 2007-2008 C-Ware, Inc.
+ * Copyright (C) 2008 Florian Forster
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Author:
+ * Luke Heberling <lukeh at c-ware.com>
+ * Florian Forster <octo at collectd.org>
+ *
+ * Description:
+ * Encapsulates useful code to plugins which must parse a log file.
+ */
+
+#include "collectd.h"
+
+#include "common.h"
+#include "plugin.h"
+#include "utils_latency_config.h"
+#include "utils_match.h"
+#include "utils_tail.h"
+#include "utils_tail_match.h"
+
+struct cu_tail_match_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];
+ cdtime_t interval;
+ latency_config_t latency_config;
+};
+typedef struct cu_tail_match_simple_s cu_tail_match_simple_t;
+
+struct cu_tail_match_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_tail_match_match_s cu_tail_match_match_t;
+
+struct cu_tail_match_s {
+ int flags;
+ cu_tail_t *tail;
+
+ cdtime_t interval;
+ cu_tail_match_match_t *matches;
+ size_t matches_num;
+};
+
+/*
+ * Private functions
+ */
+static int simple_submit_match(cu_match_t *match, void *user_data) {
+ cu_tail_match_simple_t *data = (cu_tail_match_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);
+
+ if ((match_value->ds_type & UTILS_MATCH_DS_TYPE_GAUGE) &&
+ (match_value->values_num == 0))
+ values[0].gauge = NAN;
+ else
+ values[0] = match_value->value;
+
+ vl.values = values;
+ vl.values_len = 1;
+ sstrncpy(vl.plugin, data->plugin, sizeof(vl.plugin));
+ sstrncpy(vl.plugin_instance, data->plugin_instance,
+ sizeof(vl.plugin_instance));
+ sstrncpy(vl.type, data->type, sizeof(vl.type));
+ sstrncpy(vl.type_instance, data->type_instance, sizeof(vl.type_instance));
+
+ vl.interval = data->interval;
+ plugin_dispatch_values(&vl);
+
+ match_value_reset(match_value);
+ return (0);
+} /* int simple_submit_match */
+
+static int latency_submit_match(cu_match_t *match, void *user_data) {
+ cu_tail_match_simple_t *data = (cu_tail_match_simple_t *)user_data;
+ cu_match_value_t *match_value;
+ value_list_t vl = VALUE_LIST_INIT;
+
+ match_value = (cu_match_value_t *)match_get_user_data(match);
+ if (match_value == NULL)
+ return (-1);
+
+ 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));
+ vl.interval = data->interval;
+ vl.time = cdtime();
+
+ /* Submit percentiles */
+ sstrncpy(vl.type, data->type, sizeof(vl.type));
+ for (size_t i = 0; i < data->latency_config.percentile_num; i++) {
+ if (strlen(data->type_instance) != 0)
+ ssnprintf(vl.type_instance, sizeof(vl.type_instance), "%s-%.0f",
+ data->type_instance, data->latency_config.percentile[i]);
+ else
+ ssnprintf(vl.type_instance, sizeof(vl.type_instance), "%.0f",
+ data->latency_config.percentile[i]);
+
+ vl.values = &(value_t){
+ .gauge =
+ (match_value->values_num != 0)
+ ? CDTIME_T_TO_DOUBLE(latency_counter_get_percentile(
+ match_value->latency, data->latency_config.percentile[i]))
+ : NAN,
+ };
+ vl.values_len = 1;
+
+ plugin_dispatch_values(&vl);
+ }
+
+ /* Submit buckets */
+ sstrncpy(vl.type, "bucket", sizeof(vl.type));
+ for (size_t i = 0; i < data->latency_config.buckets_num; i++) {
+ latency_bucket_t bucket = data->latency_config.buckets[i];
+
+ double lower_bound = CDTIME_T_TO_DOUBLE(bucket.lower_bound);
+ double upper_bound =
+ bucket.upper_bound ? CDTIME_T_TO_DOUBLE(bucket.upper_bound) : INFINITY;
+
+ if (strlen(data->type_instance) != 0)
+ ssnprintf(vl.type_instance, sizeof(vl.type_instance), "%s-%s-%g_%g",
+ data->type, data->type_instance, lower_bound, upper_bound);
+ else
+ ssnprintf(vl.type_instance, sizeof(vl.type_instance), "%s-%g_%g",
+ data->type, lower_bound, upper_bound);
+
+ vl.values = &(value_t){
+ .gauge =
+ latency_counter_get_rate(match_value->latency, bucket.lower_bound,
+ bucket.upper_bound, vl.time),
+ };
+ vl.values_len = 1;
+
+ plugin_dispatch_values(&vl);
+ }
+
+ match_value->value.gauge = NAN;
+ match_value->values_num = 0;
+ latency_counter_reset(match_value->latency);
+
+ return (0);
+} /* int latency_submit_match */
+
+static int tail_callback(void *data, char *buf,
+ int __attribute__((unused)) buflen) {
+ cu_tail_match_t *obj = (cu_tail_match_t *)data;
+
+ for (size_t i = 0; i < obj->matches_num; i++)
+ match_apply(obj->matches[i].match, buf);
+
+ return (0);
+} /* int tail_callback */
+
+static void tail_match_simple_free(void *data) {
+ cu_tail_match_simple_t *user_data = (cu_tail_match_simple_t *)data;
+ latency_config_free(user_data->latency_config);
+ sfree(user_data);
+} /* void tail_match_simple_free */
+
+/*
+ * Public functions
+ */
+cu_tail_match_t *tail_match_create(const char *filename) {
+ cu_tail_match_t *obj;
+
+ obj = calloc(1, sizeof(*obj));
+ if (obj == NULL)
+ return (NULL);
+
+ obj->tail = cu_tail_create(filename);
+ if (obj->tail == NULL) {
+ sfree(obj);
+ return (NULL);
+ }
+
+ return (obj);
+} /* cu_tail_match_t *tail_match_create */
+
+void tail_match_destroy(cu_tail_match_t *obj) {
+ if (obj == NULL)
+ return;
+
+ if (obj->tail != NULL) {
+ cu_tail_destroy(obj->tail);
+ obj->tail = NULL;
+ }
+
+ for (size_t i = 0; i < obj->matches_num; i++) {
+ cu_tail_match_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 tail_match_destroy */
+
+int tail_match_add_match(cu_tail_match_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_tail_match_match_t *temp;
+
+ temp = realloc(obj->matches,
+ sizeof(cu_tail_match_match_t) * (obj->matches_num + 1));
+ if (temp == NULL)
+ return (-1);
+
+ obj->matches = temp;
+ obj->matches_num++;
+
+ DEBUG("tail_match_add_match interval %lf",
+ CDTIME_T_TO_DOUBLE(((cu_tail_match_simple_t *)user_data)->interval));
+ 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 tail_match_add_match */
+
+int tail_match_add_match_simple(cu_tail_match_t *obj, const char *regex,
+ const char *excluderegex, int ds_type,
+ const char *plugin, const char *plugin_instance,
+ const char *type, const char *type_instance,
+ const latency_config_t latency_cfg,
+ const cdtime_t interval) {
+ cu_match_t *match;
+ cu_tail_match_simple_t *user_data;
+ int status;
+
+ match = match_create_simple(regex, excluderegex, ds_type);
+ if (match == NULL)
+ return (-1);
+
+ user_data = calloc(1, sizeof(*user_data));
+ if (user_data == NULL) {
+ match_destroy(match);
+ return (-1);
+ }
+
+ 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));
+
+ user_data->interval = interval;
+
+ if ((ds_type & UTILS_MATCH_DS_TYPE_GAUGE) &&
+ (ds_type & UTILS_MATCH_CF_GAUGE_DIST)) {
+ status = latency_config_copy(&user_data->latency_config, latency_cfg);
+ if (status != 0) {
+ ERROR("tail_match_add_match_simple: latency_config_copy() failed.");
+ status = -1;
+ goto out;
+ }
+
+ status = tail_match_add_match(obj, match, latency_submit_match, user_data,
+ tail_match_simple_free);
+ } else {
+ status =
+ tail_match_add_match(obj, match, simple_submit_match, user_data, free);
+ }
+
+out:
+ if (status != 0) {
+ tail_match_simple_free(user_data);
+ match_destroy(match);
+ }
+
+ return (status);
+} /* int tail_match_add_match_simple */
+
+int tail_match_read(cu_tail_match_t *obj) {
+ char buffer[4096];
+ int status;
+
+ status = cu_tail_read(obj->tail, buffer, sizeof(buffer), tail_callback,
+ (void *)obj);
+ if (status != 0) {
+ ERROR("tail_match: cu_tail_read failed.");
+ return (status);
+ }
+
+ for (size_t i = 0; i < obj->matches_num; i++) {
+ cu_tail_match_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 tail_match_read */
+
+/* vim: set sw=2 sts=2 ts=8 : */
projects / collectd.git / blobdiff