summaryrefslogtreecommitdiffstats
path: root/web/api/queries/rrdr.c
blob: ef237fa026d988062b86b17f1169af6f14d5c77c (plain)
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
// SPDX-License-Identifier: GPL-3.0-or-later

#include "rrdr.h"

/*
static void rrdr_dump(RRDR *r)
{
    long c, i;
    RRDDIM *d;

    fprintf(stderr, "\nCHART %s (%s)\n", r->st->id, r->st->name);

    for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
        fprintf(stderr, "DIMENSION %s (%s), %s%s%s%s\n"
                , d->id
                , d->name
                , (r->od[c] & RRDR_EMPTY)?"EMPTY ":""
                , (r->od[c] & RRDR_RESET)?"RESET ":""
                , (r->od[c] & RRDR_DIMENSION_HIDDEN)?"HIDDEN ":""
                , (r->od[c] & RRDR_DIMENSION_NONZERO)?"NONZERO ":""
                );
    }

    if(r->rows <= 0) {
        fprintf(stderr, "RRDR does not have any values in it.\n");
        return;
    }

    fprintf(stderr, "RRDR includes %d values in it:\n", r->rows);

    // for each line in the array
    for(i = 0; i < r->rows ;i++) {
        calculated_number *cn = &r->v[ i * r->d ];
        RRDR_DIMENSION_FLAGS *co = &r->o[ i * r->d ];

        // print the id and the timestamp of the line
        fprintf(stderr, "%ld %ld ", i + 1, r->t[i]);

        // for each dimension
        for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
            if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
            if(unlikely(!(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;

            if(co[c] & RRDR_EMPTY)
                fprintf(stderr, "null ");
            else
                fprintf(stderr, CALCULATED_NUMBER_FORMAT " %s%s%s%s "
                    , cn[c]
                    , (co[c] & RRDR_EMPTY)?"E":" "
                    , (co[c] & RRDR_RESET)?"R":" "
                    , (co[c] & RRDR_DIMENSION_HIDDEN)?"H":" "
                    , (co[c] & RRDR_DIMENSION_NONZERO)?"N":" "
                    );
        }

        fprintf(stderr, "\n");
    }
}
*/




inline static void rrdr_lock_rrdset(RRDR *r) {
    if(unlikely(!r)) {
        error("NULL value given!");
        return;
    }

    rrdset_rdlock(r->st);
    r->has_st_lock = 1;
}

inline static void rrdr_unlock_rrdset(RRDR *r) {
    if(unlikely(!r)) {
        error("NULL value given!");
        return;
    }

    if(likely(r->has_st_lock)) {
        rrdset_unlock(r->st);
        r->has_st_lock = 0;
    }
}

inline void rrdr_free(RRDR *r)
{
    if(unlikely(!r)) {
        error("NULL value given!");
        return;
    }

    rrdr_unlock_rrdset(r);
    freez(r->t);
    freez(r->v);
    freez(r->o);
    freez(r->od);
    freez(r);
}

RRDR *rrdr_create(struct rrdset *st, long n, struct context_param *context_param_list)
{
    if(unlikely(!st)) {
        error("NULL value given!");
        return NULL;
    }

    RRDR *r = callocz(1, sizeof(RRDR));
    r->st = st;

    rrdr_lock_rrdset(r);

    RRDDIM *temp_rd =  context_param_list ? context_param_list->rd : NULL;
    RRDDIM *rd;
    if (temp_rd) {
        RRDDIM *t = temp_rd;
        while (t) {
            r->d++;
            t = t->next;
        }
    } else
        rrddim_foreach_read(rd, st) r->d++;

    r->n = n;

    r->t = callocz((size_t)n, sizeof(time_t));
    r->v = mallocz(n * r->d * sizeof(calculated_number));
    r->o = mallocz(n * r->d * sizeof(RRDR_VALUE_FLAGS));
    r->od = mallocz(r->d * sizeof(RRDR_DIMENSION_FLAGS));

    // set the hidden flag on hidden dimensions
    int c;
    for (c = 0, rd = temp_rd ? temp_rd : st->dimensions; rd; c++, rd = rd->next) {
        if (unlikely(rrddim_flag_check(rd, RRDDIM_FLAG_HIDDEN)))
            r->od[c] = RRDR_DIMENSION_HIDDEN;
        else
            r->od[c] = RRDR_DIMENSION_DEFAULT;
    }

    r->group = 1;
    r->update_every = 1;

    return r;
}