1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
// SPDX-License-Identifier: GPL-3.0-or-later
#include "rrdset2json.h"
void chart_labels2json(RRDSET *st, BUFFER *wb, size_t indentation)
{
if(unlikely(!st->rrdlabels))
return;
char tabs[11];
if (indentation > 10)
indentation = 10;
tabs[0] = '\0';
while (indentation) {
strcat(tabs, "\t\t");
indentation--;
}
rrdlabels_to_buffer(st->rrdlabels, wb, tabs, ":", "\"", ",\n", NULL, NULL, NULL, NULL);
buffer_strcat(wb, "\n");
}
// generate JSON for the /api/v1/chart API call
void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memory_used, int skip_volatile) {
rrdset_rdlock(st);
time_t first_entry_t = rrdset_first_entry_t_nolock(st);
time_t last_entry_t = rrdset_last_entry_t_nolock(st);
buffer_sprintf(
wb,
"\t\t{\n"
"\t\t\t\"id\": \"%s\",\n"
"\t\t\t\"name\": \"%s\",\n"
"\t\t\t\"type\": \"%s\",\n"
"\t\t\t\"family\": \"%s\",\n"
"\t\t\t\"context\": \"%s\",\n"
"\t\t\t\"title\": \"%s (%s)\",\n"
"\t\t\t\"priority\": %ld,\n"
"\t\t\t\"plugin\": \"%s\",\n"
"\t\t\t\"module\": \"%s\",\n"
"\t\t\t\"units\": \"%s\",\n"
"\t\t\t\"data_url\": \"/api/v1/data?chart=%s\",\n"
"\t\t\t\"chart_type\": \"%s\",\n",
rrdset_id(st),
rrdset_name(st),
rrdset_type(st),
rrdset_family(st),
rrdset_context(st),
rrdset_title(st),
rrdset_name(st),
st->priority,
rrdset_plugin_name(st),
rrdset_module_name(st),
rrdset_units(st),
rrdset_name(st),
rrdset_type_name(st->chart_type));
if (likely(!skip_volatile))
buffer_sprintf(
wb,
"\t\t\t\"duration\": %"PRId64",\n",
(int64_t)(last_entry_t - first_entry_t + st->update_every) //st->entries * st->update_every
);
buffer_sprintf(
wb,
"\t\t\t\"first_entry\": %"PRId64",\n",
(int64_t)first_entry_t //rrdset_first_entry_t(st)
);
if (likely(!skip_volatile))
buffer_sprintf(
wb,
"\t\t\t\"last_entry\": %"PRId64",\n",
(int64_t)last_entry_t //rrdset_last_entry_t(st)
);
buffer_sprintf(
wb,
"\t\t\t\"update_every\": %d,\n"
"\t\t\t\"dimensions\": {\n",
st->update_every);
unsigned long memory = sizeof(RRDSET) + st->memsize;
size_t dimensions = 0;
RRDDIM *rd;
rrddim_foreach_read(rd, st) {
if(rrddim_flag_check(rd, RRDDIM_FLAG_HIDDEN) || rrddim_flag_check(rd, RRDDIM_FLAG_OBSOLETE)) continue;
memory += sizeof(RRDDIM) + rd->memsize;
if (dimensions)
buffer_strcat(wb, ",\n\t\t\t\t\"");
else
buffer_strcat(wb, "\t\t\t\t\"");
buffer_strcat_jsonescape(wb, rrddim_id(rd));
buffer_strcat(wb, "\": { \"name\": \"");
buffer_strcat_jsonescape(wb, rrddim_name(rd));
buffer_strcat(wb, "\" }");
dimensions++;
}
if(dimensions_count) *dimensions_count += dimensions;
if(memory_used) *memory_used += memory;
buffer_sprintf(wb, "\n\t\t\t},\n\t\t\t\"chart_variables\": ");
health_api_v1_chart_custom_variables2json(st, wb);
buffer_strcat(wb, ",\n\t\t\t\"green\": ");
buffer_rrd_value(wb, st->green);
buffer_strcat(wb, ",\n\t\t\t\"red\": ");
buffer_rrd_value(wb, st->red);
if (likely(!skip_volatile)) {
buffer_strcat(wb, ",\n\t\t\t\"alarms\": {\n");
size_t alarms = 0;
RRDCALC *rc;
foreach_rrdcalc_in_rrdset(st, rc) {
buffer_sprintf(
wb,
"%s"
"\t\t\t\t\"%s\": {\n"
"\t\t\t\t\t\"id\": %u,\n"
"\t\t\t\t\t\"status\": \"%s\",\n"
"\t\t\t\t\t\"units\": \"%s\",\n"
"\t\t\t\t\t\"update_every\": %d\n"
"\t\t\t\t}",
(alarms) ? ",\n" : "", rrdcalc_name(rc), rc->id, rrdcalc_status2string(rc->status), rrdcalc_units(rc),
rc->update_every);
alarms++;
}
buffer_sprintf(wb,
"\n\t\t\t}"
);
}
buffer_strcat(wb, ",\n\t\t\t\"chart_labels\": {\n");
chart_labels2json(st, wb, 2);
buffer_strcat(wb, "\t\t\t}\n");
buffer_sprintf(wb,
"\n\t\t}"
);
rrdset_unlock(st);
}
|