From: Ruben Kerkhof <ruben@rubenkerkhof.com>
Date: Fri, 24 Feb 2017 16:28:28 +0000 (+0100)
Subject: Merge branch 'collectd-5.6' into collectd-5.7
X-Git-Tag: collectd-5.7.2~15
X-Git-Url: https://git.octo.it/?p=collectd.git;a=commitdiff_plain;h=004074af297a219208fa9e903db8c5dcdd7e1950

Merge branch 'collectd-5.6' into collectd-5.7

Conflicts:
	src/utils_match.c
---

004074af297a219208fa9e903db8c5dcdd7e1950
diff --cc src/utils_match.c
index 2e487b59,00000000..11b3f74f
mode 100644,000000..100644
--- a/src/utils_match.c
+++ b/src/utils_match.c
@@@ -1,372 -1,0 +1,378 @@@
 +/**
 + * collectd - src/utils_match.c
 + * Copyright (C) 2008-2014  Florian octo 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.
 + *
 + * Authors:
 + *   Florian octo Forster <octo at collectd.org>
 + **/
 +
 +#include "collectd.h"
 +
 +#include "common.h"
 +#include "plugin.h"
 +
 +#include "utils_match.h"
 +
 +#include <regex.h>
 +
 +#define UTILS_MATCH_FLAGS_EXCLUDE_REGEX 0x02
++#define UTILS_MATCH_FLAGS_REGEX 0x04
 +
 +struct cu_match_s {
 +  regex_t regex;
 +  regex_t excluderegex;
 +  int flags;
 +
 +  int (*callback)(const char *str, char *const *matches, size_t matches_num,
 +                  void *user_data);
 +  void *user_data;
 +  void (*free)(void *user_data);
 +};
 +
 +/*
 + * Private functions
 + */
 +static char *match_substr(const char *str, int begin, int end) {
 +  char *ret;
 +  size_t ret_len;
 +
 +  if ((begin < 0) || (end < 0) || (begin >= end))
 +    return (NULL);
 +  if ((size_t)end > (strlen(str) + 1)) {
 +    ERROR("utils_match: match_substr: `end' points after end of string.");
 +    return (NULL);
 +  }
 +
 +  ret_len = end - begin;
 +  ret = malloc(ret_len + 1);
 +  if (ret == NULL) {
 +    ERROR("utils_match: match_substr: malloc failed.");
 +    return (NULL);
 +  }
 +
 +  sstrncpy(ret, str + begin, ret_len + 1);
 +  return (ret);
 +} /* char *match_substr */
 +
 +static int default_callback(const char __attribute__((unused)) * str,
 +                            char *const *matches, size_t matches_num,
 +                            void *user_data) {
 +  cu_match_value_t *data = (cu_match_value_t *)user_data;
 +
 +  if (data->ds_type & UTILS_MATCH_DS_TYPE_GAUGE) {
 +    gauge_t value;
 +    char *endptr = NULL;
 +
 +    if (data->ds_type & UTILS_MATCH_CF_GAUGE_INC) {
 +      data->value.gauge = isnan(data->value.gauge) ? 1 : data->value.gauge + 1;
 +      data->values_num++;
 +      return (0);
 +    }
 +
 +    if (matches_num < 2)
 +      return (-1);
 +
 +    value = (gauge_t)strtod(matches[1], &endptr);
 +    if (matches[1] == endptr)
 +      return (-1);
 +
 +    if (data->ds_type & UTILS_MATCH_CF_GAUGE_DIST) {
 +      latency_counter_add(data->latency, DOUBLE_TO_CDTIME_T(value));
 +      data->values_num++;
 +      return (0);
 +    }
 +
 +    if ((data->values_num == 0) ||
 +        (data->ds_type & UTILS_MATCH_CF_GAUGE_LAST) ||
 +        (data->ds_type & UTILS_MATCH_CF_GAUGE_PERSIST)) {
 +      data->value.gauge = value;
 +    } else if (data->ds_type & UTILS_MATCH_CF_GAUGE_AVERAGE) {
 +      double f = ((double)data->values_num) / ((double)(data->values_num + 1));
 +      data->value.gauge = (data->value.gauge * f) + (value * (1.0 - f));
 +    } else if (data->ds_type & UTILS_MATCH_CF_GAUGE_MIN) {
 +      if (data->value.gauge > value)
 +        data->value.gauge = value;
 +    } else if (data->ds_type & UTILS_MATCH_CF_GAUGE_MAX) {
 +      if (data->value.gauge < value)
 +        data->value.gauge = value;
 +    } else if (data->ds_type & UTILS_MATCH_CF_GAUGE_ADD) {
 +      data->value.gauge += value;
 +    } else {
 +      ERROR("utils_match: default_callback: obj->ds_type is invalid!");
 +      return (-1);
 +    }
 +
 +    data->values_num++;
 +  } else if (data->ds_type & UTILS_MATCH_DS_TYPE_COUNTER) {
 +    counter_t value;
 +    char *endptr = NULL;
 +
 +    if (data->ds_type & UTILS_MATCH_CF_COUNTER_INC) {
 +      data->value.counter++;
 +      data->values_num++;
 +      return (0);
 +    }
 +
 +    if (matches_num < 2)
 +      return (-1);
 +
 +    value = (counter_t)strtoull(matches[1], &endptr, 0);
 +    if (matches[1] == endptr)
 +      return (-1);
 +
 +    if (data->ds_type & UTILS_MATCH_CF_COUNTER_SET)
 +      data->value.counter = value;
 +    else if (data->ds_type & UTILS_MATCH_CF_COUNTER_ADD)
 +      data->value.counter += value;
 +    else {
 +      ERROR("utils_match: default_callback: obj->ds_type is invalid!");
 +      return (-1);
 +    }
 +
 +    data->values_num++;
 +  } else if (data->ds_type & UTILS_MATCH_DS_TYPE_DERIVE) {
 +    derive_t value;
 +    char *endptr = NULL;
 +
 +    if (data->ds_type & UTILS_MATCH_CF_DERIVE_INC) {
 +      data->value.derive++;
 +      data->values_num++;
 +      return (0);
 +    }
 +
 +    if (matches_num < 2)
 +      return (-1);
 +
 +    value = (derive_t)strtoll(matches[1], &endptr, 0);
 +    if (matches[1] == endptr)
 +      return (-1);
 +
 +    if (data->ds_type & UTILS_MATCH_CF_DERIVE_SET)
 +      data->value.derive = value;
 +    else if (data->ds_type & UTILS_MATCH_CF_DERIVE_ADD)
 +      data->value.derive += value;
 +    else {
 +      ERROR("utils_match: default_callback: obj->ds_type is invalid!");
 +      return (-1);
 +    }
 +
 +    data->values_num++;
 +  } else if (data->ds_type & UTILS_MATCH_DS_TYPE_ABSOLUTE) {
 +    absolute_t value;
 +    char *endptr = NULL;
 +
 +    if (matches_num < 2)
 +      return (-1);
 +
 +    value = (absolute_t)strtoull(matches[1], &endptr, 0);
 +    if (matches[1] == endptr)
 +      return (-1);
 +
 +    if (data->ds_type & UTILS_MATCH_CF_ABSOLUTE_SET)
 +      data->value.absolute = value;
 +    else {
 +      ERROR("utils_match: default_callback: obj->ds_type is invalid!");
 +      return (-1);
 +    }
 +
 +    data->values_num++;
 +  } else {
 +    ERROR("utils_match: default_callback: obj->ds_type is invalid!");
 +    return (-1);
 +  }
 +
 +  return (0);
 +} /* int default_callback */
 +
 +static void match_simple_free(void *data) {
 +  cu_match_value_t *user_data = (cu_match_value_t *)data;
 +  if (user_data->latency)
 +    latency_counter_destroy(user_data->latency);
 +
 +  free(data);
 +} /* void match_simple_free */
 +
 +/*
 + * Public functions
 + */
 +cu_match_t *
 +match_create_callback(const char *regex, const char *excluderegex,
 +                      int (*callback)(const char *str, char *const *matches,
 +                                      size_t matches_num, void *user_data),
 +                      void *user_data,
 +                      void (*free_user_data)(void *user_data)) {
 +  cu_match_t *obj;
 +  int status;
 +
 +  DEBUG("utils_match: match_create_callback: regex = %s, excluderegex = %s",
 +        regex, excluderegex);
 +
 +  obj = calloc(1, sizeof(*obj));
 +  if (obj == NULL)
 +    return (NULL);
 +
 +  status = regcomp(&obj->regex, regex, REG_EXTENDED | REG_NEWLINE);
 +  if (status != 0) {
 +    ERROR("Compiling the regular expression \"%s\" failed.", regex);
 +    sfree(obj);
 +    return (NULL);
 +  }
++  obj->flags |= UTILS_MATCH_FLAGS_REGEX;
 +
 +  if (excluderegex && strcmp(excluderegex, "") != 0) {
 +    status = regcomp(&obj->excluderegex, excluderegex, REG_EXTENDED);
 +    if (status != 0) {
 +      ERROR("Compiling the excluding regular expression \"%s\" failed.",
 +            excluderegex);
 +      sfree(obj);
 +      return (NULL);
 +    }
 +    obj->flags |= UTILS_MATCH_FLAGS_EXCLUDE_REGEX;
 +  }
 +
 +  obj->callback = callback;
 +  obj->user_data = user_data;
 +  obj->free = free_user_data;
 +
 +  return (obj);
 +} /* cu_match_t *match_create_callback */
 +
 +cu_match_t *match_create_simple(const char *regex, const char *excluderegex,
 +                                int match_ds_type) {
 +  cu_match_value_t *user_data;
 +  cu_match_t *obj;
 +
 +  user_data = calloc(1, sizeof(*user_data));
 +  if (user_data == NULL)
 +    return (NULL);
 +  user_data->ds_type = match_ds_type;
 +
 +  if ((match_ds_type & UTILS_MATCH_DS_TYPE_GAUGE) &&
 +      (match_ds_type & UTILS_MATCH_CF_GAUGE_DIST)) {
 +    user_data->latency = latency_counter_create();
 +    if (user_data->latency == NULL) {
 +      ERROR("match_create_simple(): latency_counter_create() failed.");
 +      free(user_data);
 +      return (NULL);
 +    }
 +  }
 +
 +  obj = match_create_callback(regex, excluderegex, default_callback, user_data,
 +                              match_simple_free);
 +  if (obj == NULL) {
 +    if (user_data->latency)
 +      latency_counter_destroy(user_data->latency);
 +
 +    sfree(user_data);
 +    return (NULL);
 +  }
 +  return (obj);
 +} /* cu_match_t *match_create_simple */
 +
 +void match_value_reset(cu_match_value_t *mv) {
 +  if (mv == NULL)
 +    return;
 +
 +  /* Reset GAUGE metrics only and except GAUGE_PERSIST. */
 +  if ((mv->ds_type & UTILS_MATCH_DS_TYPE_GAUGE) &&
 +      !(mv->ds_type & UTILS_MATCH_CF_GAUGE_PERSIST)) {
 +    mv->value.gauge = NAN;
 +    mv->values_num = 0;
 +  }
 +} /* }}} void match_value_reset */
 +
 +void match_destroy(cu_match_t *obj) {
 +  if (obj == NULL)
 +    return;
 +
++  if (obj->flags & UTILS_MATCH_FLAGS_REGEX)
++    regfree(&obj->regex);
++  if (obj->flags & UTILS_MATCH_FLAGS_EXCLUDE_REGEX)
++    regfree(&obj->excluderegex);
 +  if ((obj->user_data != NULL) && (obj->free != NULL))
 +    (*obj->free)(obj->user_data);
 +
 +  sfree(obj);
 +} /* void match_destroy */
 +
 +int match_apply(cu_match_t *obj, const char *str) {
 +  int status;
 +  regmatch_t re_match[32];
 +  char *matches[32] = {0};
 +  size_t matches_num;
 +
 +  if ((obj == NULL) || (str == NULL))
 +    return (-1);
 +
 +  if (obj->flags & UTILS_MATCH_FLAGS_EXCLUDE_REGEX) {
 +    status =
 +        regexec(&obj->excluderegex, str, STATIC_ARRAY_SIZE(re_match), re_match,
 +                /* eflags = */ 0);
 +    /* Regex did match, so exclude this line */
 +    if (status == 0) {
 +      DEBUG("ExludeRegex matched, don't count that line\n");
 +      return (0);
 +    }
 +  }
 +
 +  status = regexec(&obj->regex, str, STATIC_ARRAY_SIZE(re_match), re_match,
 +                   /* eflags = */ 0);
 +
 +  /* Regex did not match */
 +  if (status != 0)
 +    return (0);
 +
 +  for (matches_num = 0; matches_num < STATIC_ARRAY_SIZE(matches);
 +       matches_num++) {
 +    if ((re_match[matches_num].rm_so < 0) || (re_match[matches_num].rm_eo < 0))
 +      break;
 +
 +    matches[matches_num] = match_substr(str, re_match[matches_num].rm_so,
 +                                        re_match[matches_num].rm_eo);
 +    if (matches[matches_num] == NULL) {
 +      status = -1;
 +      break;
 +    }
 +  }
 +
 +  if (status != 0) {
 +    ERROR("utils_match: match_apply: match_substr failed.");
 +  } else {
 +    status = obj->callback(str, matches, matches_num, obj->user_data);
 +    if (status != 0) {
 +      ERROR("utils_match: match_apply: callback failed.");
 +    }
 +  }
 +
 +  for (size_t i = 0; i < matches_num; i++) {
 +    sfree(matches[i]);
 +  }
 +
 +  return (status);
 +} /* int match_apply */
 +
 +void *match_get_user_data(cu_match_t *obj) {
 +  if (obj == NULL)
 +    return (NULL);
 +  return (obj->user_data);
 +} /* void *match_get_user_data */
 +
 +/* vim: set sw=2 sts=2 ts=8 : */