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
226
227
228
229
230
231
232
233
234
235
236
237
238
239
|
#include <gtest/gtest.h>
#include "fieldstat.h"
#include "utils.hpp"
#include "hdr/hdr_histogram.h"
#include "histogram_encoder.h"
int test_fieldstat_cube_create(struct fieldstat *instance, const struct field *dimensions, size_t n_dimensions, enum sampling_mode mode, int k)
{
assert(mode == SAMPLING_MODE_COMPREHENSIVE);
int ret = fieldstat_cube_create(instance, dimensions, n_dimensions);
fieldstat_cube_set_sampling(instance, ret, mode, k, 0);
return ret;
}
struct fieldstat *test_init_standard_instance_one_cube_one_metric_one_cell_hdr()
{
struct fieldstat *instance = fieldstat_new();
int cube_id = test_fieldstat_cube_create(instance, &TEST_SHARED_TAG, 1, SAMPLING_MODE_COMPREHENSIVE, 10);
EXPECT_EQ(cube_id, 0);
int metric_id = fieldstat_register_histogram(instance, cube_id, "czz_test hdr metric", 1, 600000, 3);
EXPECT_EQ(metric_id, 0);
return instance;
}
void test_assert_standard_instance(const struct fieldstat *instance)
{
int *ret_cube_id_arr = NULL;
int n_cube = 0;
fieldstat_get_cubes(instance, &ret_cube_id_arr, &n_cube);
EXPECT_EQ(n_cube, 1);
int ret_cell_id = ret_cube_id_arr[0];
free(ret_cube_id_arr);
EXPECT_EQ(ret_cell_id, 0);
const char *name = fieldstat_metric_get_name(instance, ret_cell_id, 0);
EXPECT_STREQ(name, "czz_test hdr metric");
struct field_list *tag_list = NULL;
size_t n_cell = 0;
fieldstat_cube_get_cells(instance, 0, &tag_list, &n_cell);
EXPECT_EQ(n_cell, 1);
EXPECT_EQ(tag_list->n_field, 1);
EXPECT_STREQ(tag_list->field[0].key, TEST_FIELD_STRING.key);
int *metric_id = NULL;
size_t n_metric = 0;
fieldstat_cell_get_metrics(instance, 0, &tag_list[0], &metric_id, &n_metric);
EXPECT_EQ(n_metric, 1);
EXPECT_EQ(metric_id[0], 0);
free(metric_id);
fieldstat_field_list_arr_free(tag_list, n_cell);
}
TEST(metric_test_histogram, simple_register_and_query)
{
struct fieldstat *instance = test_init_standard_instance_one_cube_one_metric_one_cell_hdr();
fieldstat_histogram_record(instance, 0, 0, &TEST_FIELD_STRING, 1, 1234);
fieldstat_histogram_record(instance, 0, 0, &TEST_FIELD_STRING, 1, 1234);
fieldstat_histogram_record(instance, 0, 0, &TEST_FIELD_STRING, 1, 123);
test_assert_standard_instance(instance);
EXPECT_EQ(fieldstat_histogram_value_at_percentile(instance, 0, &TEST_FIELD_LIST_STRING, 0, 50.0), 1234);
EXPECT_EQ(fieldstat_histogram_count_le_value(instance, 0, &TEST_FIELD_LIST_STRING, 0, 1000), 1);
fieldstat_free(instance);
}
TEST(metric_test_histogram, merge)
{
struct fieldstat *instance = test_init_standard_instance_one_cube_one_metric_one_cell_hdr();
fieldstat_histogram_record(instance, 0, 0, &TEST_FIELD_STRING, 1, 1234);
fieldstat_histogram_record(instance, 0, 0, &TEST_FIELD_STRING, 1, 1234);
fieldstat_histogram_record(instance, 0, 0, &TEST_FIELD_STRING, 1, 123);
struct fieldstat *instance_total = fieldstat_new();
fieldstat_merge(instance_total, instance);
// query
test_assert_standard_instance(instance_total);
EXPECT_EQ(fieldstat_histogram_value_at_percentile(instance_total, 0, &TEST_FIELD_LIST_STRING, 0, 50.0), 1234);
EXPECT_EQ(fieldstat_histogram_count_le_value(instance, 0, &TEST_FIELD_LIST_STRING, 0, 1000), 1);
fieldstat_free(instance);
fieldstat_free(instance_total);
}
TEST(metric_test_histogram, merge_twice_with_reset)
{
struct fieldstat *instance = test_init_standard_instance_one_cube_one_metric_one_cell_hdr();
fieldstat_histogram_record(instance, 0, 0, &TEST_FIELD_STRING, 1, 1234);
fieldstat_histogram_record(instance, 0, 0, &TEST_FIELD_STRING, 1, 123);
struct fieldstat *instance_total = fieldstat_new();
fieldstat_merge(instance_total, instance);
fieldstat_reset(instance);
fieldstat_histogram_record(instance, 0, 0, &TEST_FIELD_STRING, 1, 1234);
fieldstat_merge(instance_total, instance);
test_assert_standard_instance(instance_total);
EXPECT_EQ(fieldstat_histogram_value_at_percentile(instance_total, 0, &TEST_FIELD_LIST_STRING, 0, 50.0), 1234);
EXPECT_EQ(fieldstat_histogram_count_le_value(instance_total, 0, &TEST_FIELD_LIST_STRING, 0, 1000), 1);
fieldstat_free(instance);
fieldstat_free(instance_total);
}
TEST(metric_test_histogram, add_with_wrong_cube_id_expecting_fail)
{
struct fieldstat *instance = fieldstat_new();
int cube_id = test_fieldstat_cube_create(instance, &TEST_FIELD_INT_2, 1, SAMPLING_MODE_COMPREHENSIVE, 10);
int ret = fieldstat_histogram_record(instance, cube_id + 1, 0, &TEST_FIELD_INT, 1, 1);
EXPECT_EQ(ret, FS_ERR_INVALID_CUBE_ID);
ret = fieldstat_histogram_record(instance, -1, 0, &TEST_FIELD_INT, 1, 1);
EXPECT_EQ(ret, FS_ERR_INVALID_CUBE_ID);
fieldstat_free(instance);
}
TEST(metric_test_histogram, add_with_wrong_metric_id_expecting_fail)
{
struct fieldstat *instance = fieldstat_new();
int cube_id = test_fieldstat_cube_create(instance, &TEST_FIELD_INT_2, 1, SAMPLING_MODE_COMPREHENSIVE, 10);
int metric_id = fieldstat_register_histogram(instance, cube_id, "czz_test", 1, 600000, 3);
int ret = fieldstat_histogram_record(instance, cube_id, metric_id + 1, &TEST_FIELD_INT, 1, 1);
EXPECT_EQ(ret, FS_ERR_INVALID_METRIC_ID);
ret = fieldstat_histogram_record(instance, cube_id, -1, &TEST_FIELD_INT, 1, 1);
EXPECT_EQ(ret, FS_ERR_INVALID_METRIC_ID);
fieldstat_free(instance);
}
extern "C" {
bool fieldstat_is_hll(char *buf);
}
TEST(metric_test_histogram, encode_decode_b64)
{
struct hdr_histogram *h = NULL;
hdr_init(1, 10000, 5, &h);
hdr_record_value(h, 1234);
hdr_record_value(h, 1234);
hdr_record_value(h, 4312);
char *b64 = NULL;
size_t b64_len = 0;
histogram_encode_into_b64(h, &b64, &b64_len);
EXPECT_FALSE(fieldstat_is_hll(b64));
struct hdr_histogram *h2 = histogram_decode_from_b64(b64, b64_len);
EXPECT_TRUE(h2 != NULL);
EXPECT_EQ(h->lowest_discernible_value, h2->lowest_discernible_value);
EXPECT_EQ(h->highest_trackable_value, h2->highest_trackable_value);
EXPECT_EQ(h->significant_figures, h2->significant_figures);
EXPECT_EQ(h->counts_len, h2->counts_len);
for (int i = 0; i < h2->counts_len; i++)
{
EXPECT_EQ(h->counts[i], h2->counts[i]);
}
free(b64);
hdr_close(h);
hdr_close(h2);
}
TEST(metric_test_histogram, can_add_0value) // histogram only allow min_val > 0, but it can accept value == 0
{
struct fieldstat *instance = fieldstat_new();
int cube_id = test_fieldstat_cube_create(instance, &TEST_FIELD_INT_2, 1, SAMPLING_MODE_COMPREHENSIVE, 10);
int metric_id = fieldstat_register_histogram(instance, cube_id, "czz_test", 1, 600000, 3);
int ret = fieldstat_histogram_record(instance, cube_id, metric_id, &TEST_FIELD_INT, 1, 0);
EXPECT_EQ(ret, 0);
ret = fieldstat_histogram_record(instance, cube_id, metric_id, &TEST_FIELD_INT, 1, 0);
EXPECT_EQ(ret, 0);
ret = fieldstat_histogram_record(instance, cube_id, metric_id, &TEST_FIELD_INT, 1, 500);
EXPECT_EQ(fieldstat_histogram_value_at_percentile(instance, cube_id, &TEST_FIELD_LIST_INT, metric_id, 60.0), 0);
fieldstat_free(instance);
}
TEST(metric_test_histogram, histogram_batch_transaction) {
struct fieldstat *instance = fieldstat_new();
int cube_id = test_fieldstat_cube_create(instance, &TEST_SHARED_TAG, 1, SAMPLING_MODE_COMPREHENSIVE, 10);
int metric_id = fieldstat_register_histogram(instance, cube_id, "test_histogram_metric", 1, 10000, 5);
struct histogram *histogram = histogram_new(1, 10000, 5);
ASSERT_NE(histogram, nullptr);
long long packet_lengths[] = {1234, 1234, 123, 567, 890, 1234, 1500};
size_t packet_count = sizeof(packet_lengths) / sizeof(packet_lengths[0]);
for (size_t i = 0; i < packet_count; ++i) {
int tmp_ret = histogram_record(histogram, packet_lengths[i]);
EXPECT_EQ(tmp_ret, 0);
}
int merge_result = fieldstat_histogram_merge(instance, cube_id, metric_id, &TEST_FIELD_STRING, 1, histogram);
EXPECT_EQ(merge_result, 0);
double percentile_value = fieldstat_histogram_value_at_percentile(instance, cube_id, &TEST_FIELD_LIST_STRING, metric_id, 50.0);
EXPECT_EQ(percentile_value, 1234);
int count_le = fieldstat_histogram_count_le_value(instance, cube_id, &TEST_FIELD_LIST_STRING, metric_id, 1000);
EXPECT_EQ(count_le, 3);
// test reset
histogram_reset(histogram);
histogram_record(histogram, 2000);
histogram_record(histogram, 2500);
merge_result = fieldstat_histogram_merge(instance, cube_id, metric_id, &TEST_FIELD_STRING, 1, histogram);
EXPECT_EQ(merge_result, 0);
percentile_value = fieldstat_histogram_value_at_percentile(instance, cube_id, &TEST_FIELD_LIST_STRING, metric_id, 95.0);
EXPECT_EQ(percentile_value, 2500);
count_le = fieldstat_histogram_count_le_value(instance, cube_id, &TEST_FIELD_LIST_STRING, metric_id, 1000);
EXPECT_EQ(count_le, 3);
histogram_free(histogram);
fieldstat_free(instance);
}
int main(int argc, char *argv[])
{
testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
|
