/**
* collectd - src/utils_format_json.c
- * Copyright (C) 2009 Florian octo Forster
+ * Copyright (C) 2009 Florian octo 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.
+ * 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:
*
- * 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.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*
- * 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
+ * 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 verplant.org>
+ * Florian octo Forster <octo at collectd.org>
**/
#include "collectd.h"
#include "plugin.h"
#include "common.h"
+#include "utils_cache.h"
#include "utils_format_json.h"
static int escape_string (char *buffer, size_t buffer_size, /* {{{ */
#undef BUFFER_ADD
return (0);
-} /* }}} int buffer_add_string */
+} /* }}} int escape_string */
static int values_to_json (char *buffer, size_t buffer_size, /* {{{ */
- const data_set_t *ds, const value_list_t *vl)
+ const data_set_t *ds, const value_list_t *vl, int store_rates)
{
size_t offset = 0;
int i;
+ gauge_t *rates = NULL;
memset (buffer, 0, buffer_size);
status = ssnprintf (buffer + offset, buffer_size - offset, \
__VA_ARGS__); \
if (status < 1) \
+ { \
+ sfree(rates); \
return (-1); \
+ } \
else if (((size_t) status) >= (buffer_size - offset)) \
+ { \
+ sfree(rates); \
return (-ENOMEM); \
+ } \
else \
- offset += ((size_t) status); \
+ offset += ((size_t) status); \
} while (0)
BUFFER_ADD ("[");
BUFFER_ADD (",");
if (ds->ds[i].type == DS_TYPE_GAUGE)
- BUFFER_ADD ("%g", vl->values[i].gauge);
+ {
+ if(isfinite (vl->values[i].gauge))
+ BUFFER_ADD ("%g", vl->values[i].gauge);
+ else
+ BUFFER_ADD ("null");
+ }
+ else if (store_rates)
+ {
+ if (rates == NULL)
+ rates = uc_get_rate (ds, vl);
+ if (rates == NULL)
+ {
+ WARNING ("utils_format_json: uc_get_rate failed.");
+ sfree(rates);
+ return (-1);
+ }
+
+ if(isfinite (rates[i]))
+ BUFFER_ADD ("%g", rates[i]);
+ else
+ BUFFER_ADD ("null");
+ }
else if (ds->ds[i].type == DS_TYPE_COUNTER)
BUFFER_ADD ("%llu", vl->values[i].counter);
else if (ds->ds[i].type == DS_TYPE_DERIVE)
{
ERROR ("format_json: Unknown data source type: %i",
ds->ds[i].type);
+ sfree (rates);
return (-1);
}
} /* for ds->ds_num */
#undef BUFFER_ADD
DEBUG ("format_json: values_to_json: buffer = %s;", buffer);
-
+ sfree(rates);
return (0);
} /* }}} int values_to_json */
+static int dstypes_to_json (char *buffer, size_t buffer_size, /* {{{ */
+ const data_set_t *ds)
+{
+ size_t offset = 0;
+ int i;
+
+ memset (buffer, 0, buffer_size);
+
+#define BUFFER_ADD(...) do { \
+ int status; \
+ status = ssnprintf (buffer + offset, buffer_size - offset, \
+ __VA_ARGS__); \
+ if (status < 1) \
+ return (-1); \
+ else if (((size_t) status) >= (buffer_size - offset)) \
+ return (-ENOMEM); \
+ else \
+ offset += ((size_t) status); \
+} while (0)
+
+ BUFFER_ADD ("[");
+ for (i = 0; i < ds->ds_num; i++)
+ {
+ if (i > 0)
+ BUFFER_ADD (",");
+
+ BUFFER_ADD ("\"%s\"", DS_TYPE_TO_STRING (ds->ds[i].type));
+ } /* for ds->ds_num */
+ BUFFER_ADD ("]");
+
+#undef BUFFER_ADD
+
+ DEBUG ("format_json: dstypes_to_json: buffer = %s;", buffer);
+
+ return (0);
+} /* }}} int dstypes_to_json */
+
+static int dsnames_to_json (char *buffer, size_t buffer_size, /* {{{ */
+ const data_set_t *ds)
+{
+ size_t offset = 0;
+ int i;
+
+ memset (buffer, 0, buffer_size);
+
+#define BUFFER_ADD(...) do { \
+ int status; \
+ status = ssnprintf (buffer + offset, buffer_size - offset, \
+ __VA_ARGS__); \
+ if (status < 1) \
+ return (-1); \
+ else if (((size_t) status) >= (buffer_size - offset)) \
+ return (-ENOMEM); \
+ else \
+ offset += ((size_t) status); \
+} while (0)
+
+ BUFFER_ADD ("[");
+ for (i = 0; i < ds->ds_num; i++)
+ {
+ if (i > 0)
+ BUFFER_ADD (",");
+
+ BUFFER_ADD ("\"%s\"", ds->ds[i].name);
+ } /* for ds->ds_num */
+ BUFFER_ADD ("]");
+
+#undef BUFFER_ADD
+
+ DEBUG ("format_json: dsnames_to_json: buffer = %s;", buffer);
+
+ return (0);
+} /* }}} int dsnames_to_json */
+
+static int meta_data_to_json (char *buffer, size_t buffer_size, /* {{{ */
+ meta_data_t *meta)
+{
+ size_t offset = 0;
+ char **keys = NULL;
+ int keys_num;
+ int status;
+ int i;
+
+ memset (buffer, 0, buffer_size);
+
+#define BUFFER_ADD(...) do { \
+ status = ssnprintf (buffer + offset, buffer_size - offset, \
+ __VA_ARGS__); \
+ if (status < 1) \
+ return (-1); \
+ else if (((size_t) status) >= (buffer_size - offset)) \
+ return (-ENOMEM); \
+ else \
+ offset += ((size_t) status); \
+} while (0)
+
+ keys_num = meta_data_toc (meta, &keys);
+ for (i = 0; i < keys_num; ++i)
+ {
+ int type;
+ char *key = keys[i];
+
+ type = meta_data_type (meta, key);
+ if (type == MD_TYPE_STRING)
+ {
+ char *value = NULL;
+ if (meta_data_get_string (meta, key, &value) == 0)
+ {
+ char temp[512] = "";
+ escape_string (temp, sizeof (temp), value);
+ sfree (value);
+ BUFFER_ADD (",\"%s\":%s", key, temp);
+ }
+ }
+ else if (type == MD_TYPE_SIGNED_INT)
+ {
+ int64_t value = 0;
+ if (meta_data_get_signed_int (meta, key, &value) == 0)
+ BUFFER_ADD (",\"%s\":%"PRIi64, key, value);
+ }
+ else if (type == MD_TYPE_UNSIGNED_INT)
+ {
+ uint64_t value = 0;
+ if (meta_data_get_unsigned_int (meta, key, &value) == 0)
+ BUFFER_ADD (",\"%s\":%"PRIu64, key, value);
+ }
+ else if (type == MD_TYPE_DOUBLE)
+ {
+ double value = 0.0;
+ if (meta_data_get_double (meta, key, &value) == 0)
+ BUFFER_ADD (",\"%s\":%f", key, value);
+ }
+ else if (type == MD_TYPE_BOOLEAN)
+ {
+ _Bool value = 0;
+ if (meta_data_get_boolean (meta, key, &value) == 0)
+ BUFFER_ADD (",\"%s\":%s", key, value ? "true" : "false");
+ }
+
+ free (key);
+ } /* for (keys) */
+ free (keys);
+
+ if (offset <= 0)
+ return (ENOENT);
+
+ buffer[0] = '{'; /* replace leading ',' */
+ BUFFER_ADD ("}");
+
+#undef BUFFER_ADD
+
+ return (0);
+} /* int meta_data_to_json */
+
static int value_list_to_json (char *buffer, size_t buffer_size, /* {{{ */
- const data_set_t *ds, const value_list_t *vl)
+ const data_set_t *ds, const value_list_t *vl, int store_rates)
{
char temp[512];
size_t offset = 0;
* a square bracket in `format_json_finalize'. */
BUFFER_ADD (",{");
- status = values_to_json (temp, sizeof (temp), ds, vl);
+ status = values_to_json (temp, sizeof (temp), ds, vl, store_rates);
if (status != 0)
return (status);
BUFFER_ADD ("\"values\":%s", temp);
- BUFFER_ADD (",\"time\":%lu", (unsigned long) vl->time);
- BUFFER_ADD (",\"interval\":%i", vl->interval);
+ status = dstypes_to_json (temp, sizeof (temp), ds);
+ if (status != 0)
+ return (status);
+ BUFFER_ADD (",\"dstypes\":%s", temp);
+
+ status = dsnames_to_json (temp, sizeof (temp), ds);
+ if (status != 0)
+ return (status);
+ BUFFER_ADD (",\"dsnames\":%s", temp);
+
+ BUFFER_ADD (",\"time\":%.3f", CDTIME_T_TO_DOUBLE (vl->time));
+ BUFFER_ADD (",\"interval\":%.3f", CDTIME_T_TO_DOUBLE (vl->interval));
#define BUFFER_ADD_KEYVAL(key, value) do { \
status = escape_string (temp, sizeof (temp), (value)); \
BUFFER_ADD_KEYVAL ("type", vl->type);
BUFFER_ADD_KEYVAL ("type_instance", vl->type_instance);
+ if (vl->meta != NULL)
+ {
+ char meta_buffer[buffer_size];
+ memset (meta_buffer, 0, sizeof (meta_buffer));
+ status = meta_data_to_json (meta_buffer, sizeof (meta_buffer), vl->meta);
+ if (status != 0)
+ return (status);
+
+ BUFFER_ADD (",\"meta\":%s", meta_buffer);
+ } /* if (vl->meta != NULL) */
+
BUFFER_ADD ("}");
#undef BUFFER_ADD_KEYVAL
static int format_json_value_list_nocheck (char *buffer, /* {{{ */
size_t *ret_buffer_fill, size_t *ret_buffer_free,
const data_set_t *ds, const value_list_t *vl,
- size_t temp_size)
+ int store_rates, size_t temp_size)
{
char temp[temp_size];
int status;
- status = value_list_to_json (temp, sizeof (temp), ds, vl);
+ status = value_list_to_json (temp, sizeof (temp), ds, vl, store_rates);
if (status != 0)
return (status);
temp_size = strlen (temp);
int format_json_value_list (char *buffer, /* {{{ */
size_t *ret_buffer_fill, size_t *ret_buffer_free,
- const data_set_t *ds, const value_list_t *vl)
+ const data_set_t *ds, const value_list_t *vl, int store_rates)
{
if ((buffer == NULL)
|| (ret_buffer_fill == NULL) || (ret_buffer_free == NULL)
return (format_json_value_list_nocheck (buffer,
ret_buffer_fill, ret_buffer_free, ds, vl,
- (*ret_buffer_free) - 2));
+ store_rates, (*ret_buffer_free) - 2));
} /* }}} int format_json_value_list */
/* vim: set sw=2 sts=2 et fdm=marker : */
projects / collectd.git / blobdiff