File size: 6,597 Bytes
258fb37
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
#include "ogs-app.h"
#include "context.h"

#include "metrics.h"

typedef struct pcf_metrics_spec_def_s {
    unsigned int type;
    const char *name;
    const char *description;
    int initial_val;
    unsigned int num_labels;
    const char **labels;
} pcf_metrics_spec_def_t;

/* Helper generic functions: */
static int pcf_metrics_init_inst(ogs_metrics_inst_t **inst,
        ogs_metrics_spec_t **specs, unsigned int len,
        unsigned int num_labels, const char **labels)
{
    unsigned int i;
    for (i = 0; i < len; i++)
        inst[i] = ogs_metrics_inst_new(specs[i], num_labels, labels);
    return OGS_OK;
}

static int pcf_metrics_free_inst(ogs_metrics_inst_t **inst,
        unsigned int len)
{
    unsigned int i;
    for (i = 0; i < len; i++)
        ogs_metrics_inst_free(inst[i]);
    memset(inst, 0, sizeof(inst[0]) * len);
    return OGS_OK;
}

static int pcf_metrics_init_spec(ogs_metrics_context_t *ctx,
        ogs_metrics_spec_t **dst, pcf_metrics_spec_def_t *src, unsigned int len)
{
    unsigned int i;
    for (i = 0; i < len; i++) {
        dst[i] = ogs_metrics_spec_new(ctx, src[i].type,
                src[i].name, src[i].description,
                src[i].initial_val, src[i].num_labels, src[i].labels,
                NULL);
    }
    return OGS_OK;
}

/* GLOBAL */
ogs_metrics_spec_t *pcf_metrics_spec_global[_PCF_METR_GLOB_MAX];
ogs_metrics_inst_t *pcf_metrics_inst_global[_PCF_METR_GLOB_MAX];
pcf_metrics_spec_def_t pcf_metrics_spec_def_global[_PCF_METR_GLOB_MAX] = {
/* Global Counters: */
/* Global Gauges: */
};
int pcf_metrics_init_inst_global(void)
{
    return pcf_metrics_init_inst(pcf_metrics_inst_global,
            pcf_metrics_spec_global, _PCF_METR_GLOB_MAX, 0, NULL);
}
int pcf_metrics_free_inst_global(void)
{
    return pcf_metrics_free_inst(pcf_metrics_inst_global, _PCF_METR_GLOB_MAX);
}

/* BY_SLICE */
const char *labels_slice[] = {
    "plmnid",
    "snssai"
};

#define PCF_METR_BY_SLICE_CTR_ENTRY(_id, _name, _desc) \
    [_id] = { \
        .type = OGS_METRICS_METRIC_TYPE_COUNTER, \
        .name = _name, \
        .description = _desc, \
        .num_labels = OGS_ARRAY_SIZE(labels_slice), \
        .labels = labels_slice, \
    },
#define PCF_METR_BY_SLICE_GAUGE_ENTRY(_id, _name, _desc) \
    [_id] = { \
        .type = OGS_METRICS_METRIC_TYPE_GAUGE, \
        .name = _name, \
        .description = _desc, \
        .num_labels = OGS_ARRAY_SIZE(labels_slice), \
        .labels = labels_slice, \
    },
ogs_metrics_spec_t *pcf_metrics_spec_by_slice[_PCF_METR_BY_SLICE_MAX];
ogs_hash_t *metrics_hash_by_slice = NULL;   /* hash table for SLICE labels */
pcf_metrics_spec_def_t pcf_metrics_spec_def_by_slice[_PCF_METR_BY_SLICE_MAX] = {
/* Counters: */
PCF_METR_BY_SLICE_CTR_ENTRY(
    PCF_METR_CTR_PA_POLICYAMASSOREQ,
    "fivegs_pcffunction_pa_policyamassoreq",
    "Number of AM policy association requests")
PCF_METR_BY_SLICE_CTR_ENTRY(
    PCF_METR_CTR_PA_POLICYAMASSOSUCC,
    "fivegs_pcffunction_pa_policyamassosucc",
    "Number of successful AM policy associations")
PCF_METR_BY_SLICE_CTR_ENTRY(
    PCF_METR_CTR_PA_POLICYSMASSOREQ,
    "fivegs_pcffunction_pa_policysmassoreq",
    "Number of SM policy association requests")
PCF_METR_BY_SLICE_CTR_ENTRY(
    PCF_METR_CTR_PA_POLICYSMASSOSUCC,
    "fivegs_pcffunction_pa_policysmassosucc",
    "Number of successful SM policy associations")
/* Gauges: */
PCF_METR_BY_SLICE_GAUGE_ENTRY(
    PCF_METR_GAUGE_PA_SESSIONNBR,
    "fivegs_pcffunction_pa_sessionnbr",
    "Active Sessions")
};
void pcf_metrics_init_by_slice(void);
int pcf_metrics_free_inst_by_slice(ogs_metrics_inst_t **inst);
typedef struct pcf_metric_key_by_slice_s {
    ogs_plmn_id_t               plmn_id;
    ogs_s_nssai_t               snssai;
    pcf_metric_type_by_slice_t  t;
} pcf_metric_key_by_slice_t;

void pcf_metrics_init_by_slice(void)
{
    metrics_hash_by_slice = ogs_hash_make();
    ogs_assert(metrics_hash_by_slice);
}

void pcf_metrics_inst_by_slice_add(ogs_plmn_id_t *plmn,
        ogs_s_nssai_t *snssai, pcf_metric_type_by_slice_t t, int val)
{
    ogs_metrics_inst_t *metrics = NULL;
    pcf_metric_key_by_slice_t *slice_key;

    slice_key = ogs_calloc(1, sizeof(*slice_key));
    ogs_assert(slice_key);

    if (plmn) {
        slice_key->plmn_id = *plmn;
    }

    if (snssai) {
        slice_key->snssai = *snssai;
    } else {
        slice_key->snssai.sst = 0;
        slice_key->snssai.sd.v = OGS_S_NSSAI_NO_SD_VALUE;
    }

    slice_key->t = t;

    metrics = ogs_hash_get(metrics_hash_by_slice,
            slice_key, sizeof(*slice_key));

    if (!metrics) {
        char plmn_id[OGS_PLMNIDSTRLEN] = "";
        char *s_nssai = NULL;

        if (plmn) {
            ogs_plmn_id_to_string(plmn, plmn_id);
        }

        if (snssai) {
            s_nssai = ogs_sbi_s_nssai_to_string(snssai);
        } else {
            s_nssai = ogs_strdup("");
        }

        metrics = ogs_metrics_inst_new(pcf_metrics_spec_by_slice[t],
                pcf_metrics_spec_def_by_slice->num_labels,
                (const char *[]){ plmn_id, s_nssai });

        ogs_assert(metrics);
        ogs_hash_set(metrics_hash_by_slice,
                slice_key, sizeof(*slice_key), metrics);

        if (s_nssai)
            ogs_free(s_nssai);
    } else {
        ogs_free(slice_key);
    }

    ogs_metrics_inst_add(metrics, val);
}

int pcf_metrics_free_inst_by_slice(ogs_metrics_inst_t **inst)
{
    return pcf_metrics_free_inst(inst, _PCF_METR_BY_SLICE_MAX);
}

void pcf_metrics_init(void)
{
    ogs_metrics_context_t *ctx = ogs_metrics_self();
    ogs_metrics_context_init();

    pcf_metrics_init_spec(ctx, pcf_metrics_spec_global,
            pcf_metrics_spec_def_global, _PCF_METR_GLOB_MAX);
    pcf_metrics_init_spec(ctx, pcf_metrics_spec_by_slice,
            pcf_metrics_spec_def_by_slice, _PCF_METR_BY_SLICE_MAX);

    pcf_metrics_init_inst_global();
    pcf_metrics_init_by_slice();
}

void pcf_metrics_final(void)
{
    ogs_hash_index_t *hi;

    if (metrics_hash_by_slice) {
        for (hi = ogs_hash_first(metrics_hash_by_slice); hi; hi = ogs_hash_next(hi)) {
            pcf_metric_key_by_slice_t *key =
                (pcf_metric_key_by_slice_t *)ogs_hash_this_key(hi);
            //void *val = ogs_hash_this_val(hi);

            ogs_hash_set(metrics_hash_by_slice, key, sizeof(*key), NULL);

            ogs_free(key);
            /* don't free val (metric itself) -
             * it will be free'd by ogs_metrics_context_final() */
            //ogs_free(val);
        }
        ogs_hash_destroy(metrics_hash_by_slice);
    }

    ogs_metrics_context_final();
}