![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/src/utils_format_json.c b/src/utils_format_json.c
--- a/src/utils_format_json.c
+++ /dev/null
@@ -1,487 +0,0 @@
-/**
- * collectd - src/utils_format_json.c
- * Copyright (C) 2009 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 "plugin.h"
-#include "common.h"
-
-#include "utils_cache.h"
-#include "utils_format_json.h"
-
-static int json_escape_string (char *buffer, size_t buffer_size, /* {{{ */
- const char *string)
-{
- size_t src_pos;
- size_t dst_pos;
-
- if ((buffer == NULL) || (string == NULL))
- return (-EINVAL);
-
- if (buffer_size < 3)
- return (-ENOMEM);
-
- dst_pos = 0;
-
-#define BUFFER_ADD(c) do { \
- if (dst_pos >= (buffer_size - 1)) { \
- buffer[buffer_size - 1] = 0; \
- return (-ENOMEM); \
- } \
- buffer[dst_pos] = (c); \
- dst_pos++; \
-} while (0)
-
- /* Escape special characters */
- BUFFER_ADD ('"');
- for (src_pos = 0; string[src_pos] != 0; src_pos++)
- {
- if ((string[src_pos] == '"')
- || (string[src_pos] == '\\'))
- {
- BUFFER_ADD ('\\');
- BUFFER_ADD (string[src_pos]);
- }
- else if (string[src_pos] <= 0x001F)
- BUFFER_ADD ('?');
- else
- BUFFER_ADD (string[src_pos]);
- } /* for */
- BUFFER_ADD ('"');
- buffer[dst_pos] = 0;
-
-#undef BUFFER_ADD
-
- return (0);
-} /* }}} int json_escape_string */
-
-static int values_to_json (char *buffer, size_t buffer_size, /* {{{ */
- 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);
-
-#define BUFFER_ADD(...) do { \
- int status; \
- 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); \
-} while (0)
-
- BUFFER_ADD ("[");
- for (i = 0; i < ds->ds_num; i++)
- {
- if (i > 0)
- BUFFER_ADD (",");
-
- if (ds->ds[i].type == DS_TYPE_GAUGE)
- {
- if(isfinite (vl->values[i].gauge))
- BUFFER_ADD (JSON_GAUGE_FORMAT, 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 (JSON_GAUGE_FORMAT, 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)
- BUFFER_ADD ("%"PRIi64, vl->values[i].derive);
- else if (ds->ds[i].type == DS_TYPE_ABSOLUTE)
- BUFFER_ADD ("%"PRIu64, vl->values[i].absolute);
- else
- {
- ERROR ("format_json: Unknown data source type: %i",
- ds->ds[i].type);
- sfree (rates);
- return (-1);
- }
- } /* for ds->ds_num */
- BUFFER_ADD ("]");
-
-#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;
-
- buffer[0] = 0;
-
- if (meta == NULL)
- return (EINVAL);
-
-#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);
- if (keys_num == 0)
- {
- sfree (keys);
- return (0);
- }
-
- 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] = "";
- json_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, int store_rates)
-{
- char temp[512];
- size_t offset = 0;
- int status;
-
- 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)
-
- /* All value lists have a leading comma. The first one will be replaced with
- * a square bracket in `format_json_finalize'. */
- BUFFER_ADD (",{");
-
- status = values_to_json (temp, sizeof (temp), ds, vl, store_rates);
- if (status != 0)
- return (status);
- BUFFER_ADD ("\"values\":%s", temp);
-
- 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 = json_escape_string (temp, sizeof (temp), (value)); \
- if (status != 0) \
- return (status); \
- BUFFER_ADD (",\"%s\":%s", (key), temp); \
-} while (0)
-
- BUFFER_ADD_KEYVAL ("host", vl->host);
- BUFFER_ADD_KEYVAL ("plugin", vl->plugin);
- BUFFER_ADD_KEYVAL ("plugin_instance", vl->plugin_instance);
- 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
-#undef BUFFER_ADD
-
- DEBUG ("format_json: value_list_to_json: buffer = %s;", buffer);
-
- return (0);
-} /* }}} int value_list_to_json */
-
-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,
- int store_rates, size_t temp_size)
-{
- char temp[temp_size];
- int status;
-
- status = value_list_to_json (temp, sizeof (temp), ds, vl, store_rates);
- if (status != 0)
- return (status);
- temp_size = strlen (temp);
-
- memcpy (buffer + (*ret_buffer_fill), temp, temp_size + 1);
- (*ret_buffer_fill) += temp_size;
- (*ret_buffer_free) -= temp_size;
-
- return (0);
-} /* }}} int format_json_value_list_nocheck */
-
-int format_json_initialize (char *buffer, /* {{{ */
- size_t *ret_buffer_fill, size_t *ret_buffer_free)
-{
- size_t buffer_fill;
- size_t buffer_free;
-
- if ((buffer == NULL) || (ret_buffer_fill == NULL) || (ret_buffer_free == NULL))
- return (-EINVAL);
-
- buffer_fill = *ret_buffer_fill;
- buffer_free = *ret_buffer_free;
-
- buffer_free = buffer_fill + buffer_free;
- buffer_fill = 0;
-
- if (buffer_free < 3)
- return (-ENOMEM);
-
- memset (buffer, 0, buffer_free);
- *ret_buffer_fill = buffer_fill;
- *ret_buffer_free = buffer_free;
-
- return (0);
-} /* }}} int format_json_initialize */
-
-int format_json_finalize (char *buffer, /* {{{ */
- size_t *ret_buffer_fill, size_t *ret_buffer_free)
-{
- size_t pos;
-
- if ((buffer == NULL) || (ret_buffer_fill == NULL) || (ret_buffer_free == NULL))
- return (-EINVAL);
-
- if (*ret_buffer_free < 2)
- return (-ENOMEM);
-
- /* Replace the leading comma added in `value_list_to_json' with a square
- * bracket. */
- if (buffer[0] != ',')
- return (-EINVAL);
- buffer[0] = '[';
-
- pos = *ret_buffer_fill;
- buffer[pos] = ']';
- buffer[pos+1] = 0;
-
- (*ret_buffer_fill)++;
- (*ret_buffer_free)--;
-
- return (0);
-} /* }}} int format_json_finalize */
-
-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, int store_rates)
-{
- if ((buffer == NULL)
- || (ret_buffer_fill == NULL) || (ret_buffer_free == NULL)
- || (ds == NULL) || (vl == NULL))
- return (-EINVAL);
-
- if (*ret_buffer_free < 3)
- return (-ENOMEM);
-
- return (format_json_value_list_nocheck (buffer,
- ret_buffer_fill, ret_buffer_free, ds, vl,
- store_rates, (*ret_buffer_free) - 2));
-} /* }}} int format_json_value_list */
-
-/* vim: set sw=2 sts=2 et fdm=marker : */