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test_segment_tree.c
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/*
* Copyright 2020 New Relic Corporation. All rights reserved.
* SPDX-License-Identifier: Apache-2.0
*/
#include "nr_axiom.h"
#include "nr_segment_traces.h"
#include "nr_segment_tree.h"
#include "nr_segment_private.h"
#include "nr_span_event_private.h"
#include "nr_txn_private.h"
#include "test_segment_helpers.h"
#include "util_number_converter.h"
#include "util_set.h"
#include "tlib_main.h"
#define assert_null_result(M, RESULT) \
do { \
const char* anr_msg = (M); \
const nrtxnfinal_t anr_res = (RESULT); \
\
tlib_pass_if_null(anr_msg, anr_res.trace_json); \
tlib_pass_if_null(anr_msg, anr_res.span_events); \
} while (0)
static void test_finalise_bad_params(void) {
nrtxn_t txn = {.abs_start_time = 1000};
size_t trace_limit = 1;
size_t span_limit = 1;
/*
* Test : Bad parameters
*/
assert_null_result(
"Traversing the segments of a NULL transaction must NOT populate a "
"result",
nr_segment_tree_finalise(NULL, trace_limit, span_limit, NULL, NULL));
assert_null_result(
"Traversing a segment-less transaction must NOT populate a result",
nr_segment_tree_finalise(&txn, trace_limit, span_limit, NULL, NULL));
}
static void test_finalise_span_priority(void) {
nrtxn_t txn = {0};
nrtxnfinal_t result;
nr_span_event_t* span;
nr_segment_t* root;
nr_segment_t* custom;
nr_segment_t* external;
nr_segment_t* long_seg;
/* Mock up the transaction */
txn.abs_start_time = 1000;
txn.distributed_trace = nr_distributed_trace_create();
nr_distributed_trace_set_sampled(txn.distributed_trace, true);
txn.options.distributed_tracing_enabled = true;
txn.options.span_events_enabled = true;
txn.segment_count = 1;
txn.segment_slab = nr_slab_create(sizeof(nr_segment_t), 0);
txn.trace_strings = nr_string_pool_create();
txn.scoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
txn.unscoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
txn.options.tt_threshold = 5000;
/* Mock up a long custom segment */
long_seg = nr_slab_next(txn.segment_slab);
long_seg->name = nr_string_add(txn.trace_strings, "Long");
long_seg->txn = &txn;
long_seg->start_time = 2000;
long_seg->stop_time = 20000;
/* Mock up the external segment */
external = nr_slab_next(txn.segment_slab);
external->name = nr_string_add(txn.trace_strings, "External");
external->txn = &txn;
external->start_time = 2000;
external->stop_time = 8000;
external->id = nr_strdup("id");
/* Mock up the custom segment */
custom = nr_slab_next(txn.segment_slab);
custom->name = nr_string_add(txn.trace_strings, "Custom");
custom->txn = &txn;
custom->start_time = 1000;
custom->stop_time = 9000;
nr_segment_children_init(&custom->children);
nr_segment_add_child(custom, external);
/* Mock up the root segment */
root = nr_slab_next(txn.segment_slab);
root->name = nr_string_add(txn.trace_strings, "WebTransaction/*");
root->txn = &txn;
root->start_time = 0;
root->stop_time = 20000;
nr_segment_children_init(&root->children);
nr_segment_add_child(root, custom);
nr_segment_add_child(root, long_seg);
txn.segment_root = root;
txn.segment_count = 4;
nr_segment_set_priority_flag(root, NR_SEGMENT_PRIORITY_ROOT);
nr_segment_set_priority_flag(external, NR_SEGMENT_PRIORITY_DT);
/*
* Our internal heap implementation doesn't allow for a heap of size
* 1. That's why we start with a span limit of 2 here.
*/
/*
* Test : External and root segments should be kept.
*/
result = nr_segment_tree_finalise(&txn, 0, 2, NULL, NULL);
tlib_pass_if_int_equal("2 span events: root and external",
nr_vector_size(result.span_events), 2);
span = (nr_span_event_t*)nr_vector_get(result.span_events, 0);
tlib_pass_if_str_equal("2 span events: root and external",
nr_span_event_get_name(span), "WebTransaction/*");
span = (nr_span_event_t*)nr_vector_get(result.span_events, 1);
tlib_pass_if_str_equal("2 span events: root and external",
nr_span_event_get_name(span), "External");
nr_txn_final_destroy_fields(&result);
/*
* Test : External, root and the longest custom segments should be kept.
*/
result = nr_segment_tree_finalise(&txn, 0, 3, NULL, NULL);
tlib_pass_if_int_equal("3 span events: root, external and long custom",
nr_vector_size(result.span_events), 3);
span = (nr_span_event_t*)nr_vector_get(result.span_events, 0);
tlib_pass_if_str_equal("3 span events: root, external and long custom",
nr_span_event_get_name(span), "WebTransaction/*");
span = (nr_span_event_t*)nr_vector_get(result.span_events, 1);
tlib_pass_if_str_equal("3 span events: root, external and long custom",
nr_span_event_get_name(span), "External");
span = (nr_span_event_t*)nr_vector_get(result.span_events, 2);
tlib_pass_if_str_equal("two span events: root and external",
nr_span_event_get_name(span), "Long");
nr_txn_final_destroy_fields(&result);
/*
* Test : All segments should be kept.
*/
result = nr_segment_tree_finalise(&txn, 0, 4, NULL, NULL);
tlib_pass_if_int_equal("all span events", nr_vector_size(result.span_events),
4);
span = (nr_span_event_t*)nr_vector_get(result.span_events, 0);
tlib_pass_if_str_equal("all span events", nr_span_event_get_name(span),
"WebTransaction/*");
span = (nr_span_event_t*)nr_vector_get(result.span_events, 1);
tlib_pass_if_str_equal("all span events", nr_span_event_get_name(span),
"Custom");
span = (nr_span_event_t*)nr_vector_get(result.span_events, 2);
tlib_pass_if_str_equal("all span events", nr_span_event_get_name(span),
"External");
span = (nr_span_event_t*)nr_vector_get(result.span_events, 3);
tlib_pass_if_str_equal("two span events: root and external",
nr_span_event_get_name(span), "Long");
nr_txn_final_destroy_fields(&result);
nr_txn_destroy_fields(&txn);
}
static void test_finalise_one_only_with_metrics(void) {
nrtxn_t txn = {.abs_start_time = 1000};
size_t trace_limit = 1;
size_t span_limit = 0;
nrtxnfinal_t result;
nrobj_t* obj;
nr_segment_t* root;
/* Mock up the transaction */
txn.segment_slab = nr_slab_create(sizeof(nr_segment_t), 0);
txn.segment_count = 1;
txn.trace_strings = nr_string_pool_create();
txn.scoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
txn.unscoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
/* Mock up the segment */
root = nr_slab_next(txn.segment_slab);
root->txn = &txn;
root->start_time = 0;
root->stop_time = 3000;
root->name = nr_string_add(txn.trace_strings, "WebTransaction/*");
nr_segment_add_metric(root, "Custom/Unscoped", false);
nr_segment_add_metric(root, "Custom/Scoped", true);
txn.segment_root = root;
txn.options.tt_threshold = 5000;
/*
* Test : A too-short transaction does not yield a trace.
*/
result = nr_segment_tree_finalise(&txn, trace_limit, span_limit, NULL, NULL);
tlib_pass_if_null(
"Traversing the segments of a should-not-trace transaction must NOT "
"populate a trace JSON result",
result.trace_json);
test_metric_created(
"Traversing the segments of a should-not-trace transaction must create a "
"specific unscoped metric",
txn.unscoped_metrics, 0, 3000, "Custom/Unscoped");
test_metric_created(
"Traversing the segments of a should-not-trace transaction must create a "
"specific scoped metric",
txn.scoped_metrics, 0, 3000, "Custom/Scoped");
nr_txn_final_destroy_fields(&result);
nrm_table_destroy(&txn.scoped_metrics);
nrm_table_destroy(&txn.unscoped_metrics);
txn.scoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
txn.unscoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
/*
* Test : A zero limit does not yield a trace.
*/
/* Make the transaction long enough so that a trace should be made */
root->stop_time = 9000;
result = nr_segment_tree_finalise(&txn, 0, span_limit, NULL, NULL);
tlib_pass_if_null(
"Traversing the segments of a 0-limit trace must NOT populate a trace "
"JSON result",
result.trace_json);
test_metric_created(
"Traversing the segments of a 0-limit transaction must create a "
"specific unscoped metric",
txn.unscoped_metrics, 0, 9000, "Custom/Unscoped");
test_metric_created(
"Traversing the segments of a 0-limit transaction must create a "
"specific scoped metric",
txn.scoped_metrics, 0, 9000, "Custom/Scoped");
nr_txn_final_destroy_fields(&result);
nrm_table_destroy(&txn.scoped_metrics);
nrm_table_destroy(&txn.unscoped_metrics);
txn.scoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
txn.unscoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
/*
* Test : Normal operation
*/
result = nr_segment_tree_finalise(&txn, trace_limit, span_limit, NULL, NULL);
tlib_pass_if_not_null(
"Traversing the segments of a should-trace transaction must populate a "
"trace JSON result",
result.trace_json);
tlib_pass_if_str_equal(
"Traversing the segments of a should-trace transaction must create "
"expected trace JSON",
result.trace_json,
"[[0,{},{},[0,9,\"ROOT\",{},[[0,9,\"`0\",{},[]]]],{}],["
"\"WebTransaction\\/*\"]]");
obj = nro_create_from_json(result.trace_json);
tlib_pass_if_not_null(
"Traversing the segments of a should-trace transaction must create valid "
"JSON",
obj);
test_metric_created(
"Traversing the segments of a should-trace transaction must create a "
"specific unscoped metric",
txn.unscoped_metrics, 0, 9000, "Custom/Unscoped");
test_metric_created(
"Traversing the segments of a should-trace transaction must create a "
"specific scoped metric",
txn.scoped_metrics, 0, 9000, "Custom/Scoped");
nro_delete(obj);
nr_txn_final_destroy_fields(&result);
nrm_table_destroy(&txn.scoped_metrics);
nrm_table_destroy(&txn.unscoped_metrics);
nr_string_pool_destroy(&txn.trace_strings);
nr_segment_destroy_tree(txn.segment_root);
nr_slab_destroy(&txn.segment_slab);
}
#define NR_TEST_SEGMENT_TREE_SIZE 4
static void test_finalise(void) {
int i;
nrobj_t* obj;
nr_segment_t* current;
nrtxn_t txn = {.abs_start_time = 1000};
nrtime_t start_time = 0;
nrtime_t stop_time = 9000;
size_t trace_limit = NR_TEST_SEGMENT_TREE_SIZE;
size_t span_limit = 0;
char* segment_names[NR_TEST_SEGMENT_TREE_SIZE];
nrtxnfinal_t result;
nr_segment_t* root;
txn.segment_slab = nr_slab_create(sizeof(nr_segment_t), 0);
txn.trace_strings = nr_string_pool_create();
txn.scoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
txn.unscoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
root = nr_slab_next(txn.segment_slab);
root->txn = &txn;
root->start_time = start_time;
root->stop_time = stop_time;
root->name = nr_string_add(txn.trace_strings, "WebTransaction/*");
txn.segment_root = root;
current = root;
for (i = 0; i < NR_TEST_SEGMENT_TREE_SIZE; i++) {
nr_segment_t* segment = nr_slab_next(txn.segment_slab);
segment_names[i] = nr_alloca(5 * sizeof(char));
nr_itoa(segment_names[i], 5, i);
segment->start_time = start_time + ((i + 1) * 1000);
segment->stop_time = stop_time - ((i + 1) * 1000);
segment->name = nr_string_add(txn.trace_strings, segment_names[i]);
segment->txn = &txn;
nr_segment_add_metric(segment, segment_names[i], false);
nr_segment_add_metric(segment, segment_names[i], true);
nr_segment_children_init(¤t->children);
nr_segment_add_child(current, segment);
current = segment;
}
txn.segment_count = NR_TEST_SEGMENT_TREE_SIZE;
result = nr_segment_tree_finalise(&txn, trace_limit, span_limit, NULL, NULL);
tlib_pass_if_not_null(
"Traversing the segments of a should-sample transaction must populate a "
"result",
result.trace_json);
tlib_pass_if_str_equal(
"Traversing the segments of a should-trace transaction must create "
"expected trace JSON with all "
"segments",
result.trace_json,
"[[0,{},{},[0,9,\"ROOT\",{},[[0,9,\"`0\",{},[[1,8,\"`1\",{},[[2,7,\"`2\","
"{},[[3,6,\"`3\",{},[[4,5,\"`4\",{},[]]]]]]]]]]]],{}],["
"\"WebTransaction\\/*\",\"0\",\"1\",\"2\",\"3\"]]");
obj = nro_create_from_json(result.trace_json);
tlib_pass_if_not_null(
"Traversing the segments of a should-trace transaction must create valid "
"JSON",
obj);
for (i = 0; i < NR_TEST_SEGMENT_TREE_SIZE; i++) {
nrtime_t expected_duration = nr_time_duration(start_time + ((i + 1) * 1000),
stop_time - ((i + 1) * 1000));
test_metric_created_ex(
"Traversing the segments of a should-trace transaction must create "
"unscoped metrics as needed",
txn.unscoped_metrics, 0, expected_duration, i == 3 ? 1000 : 2000,
segment_names[i]);
test_metric_created_ex(
"Traversing the segments of a should-trace transaction must create "
"scoped metrics as needed",
txn.scoped_metrics, 0, expected_duration, i == 3 ? 1000 : 2000,
segment_names[i]);
}
nro_delete(obj);
nr_txn_final_destroy_fields(&result);
nrm_table_destroy(&txn.scoped_metrics);
nrm_table_destroy(&txn.unscoped_metrics);
nr_string_pool_destroy(&txn.trace_strings);
nr_segment_destroy_tree(txn.segment_root);
nr_slab_destroy(&txn.segment_slab);
}
typedef struct {
const nrtxn_t* txn;
nrtime_t total_time;
size_t call_count;
} test_finalise_callback_expected_t;
static void test_finalise_callback(nrtxn_t* txn,
nrtime_t total_time,
void* userdata) {
test_finalise_callback_expected_t* expected
= (test_finalise_callback_expected_t*)userdata;
tlib_pass_if_ptr_equal(
"A registered finalise callback must get the correct transaction",
expected->txn, txn);
tlib_pass_if_time_equal(
"A registered finalise callback must get the correct total time",
expected->total_time, total_time);
expected->call_count += 1;
}
static void test_finalise_total_time(void) {
nrobj_t* obj;
nr_segment_t *a, *b, *c, *d;
test_finalise_callback_expected_t cb_userdata = {.call_count = 0};
nrtxn_t txn = {.abs_start_time = 1000};
size_t trace_limit = 10;
size_t span_limit = 0;
nrtxnfinal_t result;
nr_segment_t* root;
txn.segment_slab = nr_slab_create(sizeof(nr_segment_t), 0);
txn.trace_strings = nr_string_pool_create();
txn.scoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
txn.unscoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
txn.options.tt_threshold = 0;
txn.status.recording = 1;
root = nr_slab_next(txn.segment_slab);
root->txn = &txn;
root->name = nr_string_add(txn.trace_strings, "WebTransaction/*");
txn.segment_root = root;
/*
* In order to exercise the total and exclusive time calculation, we're going
* to set up a basic async structure:
*
* time (ms): 0 10 20 30 40 50
* ROOT------------------------->
* a (ctx 1)--------->
* b (ctx 1)--->
* c (ctx 2)--------->
* d (ctx 2)--->
*
* On the main context, there is only the ROOT segment, which lasts 50 ms.
*
* Context 1 has two segments, which sum to an exclusive time of 30 ms: a has
* an exclusive time of 10 ms, and b has an exclusive time of 20 ms.
*
* Context 2 has two segments, which also sum to an exclusive time of 40 ms: c
* has an exclusive time of 20 ms, and d has an exclusive time of 20 ms.
*
* Therefore, we should have a total time of 120 ms, and a duration of 50 ms.
*/
nr_segment_set_timing(root, 0, 50 * NR_TIME_DIVISOR_MS);
a = nr_segment_start(&txn, root, "1");
nr_segment_set_name(a, "a");
nr_segment_set_timing(a, 10 * NR_TIME_DIVISOR_MS, 30 * NR_TIME_DIVISOR_MS);
b = nr_segment_start(&txn, a, "1");
nr_segment_set_name(b, "b");
nr_segment_set_timing(b, 20 * NR_TIME_DIVISOR_MS, 20 * NR_TIME_DIVISOR_MS);
c = nr_segment_start(&txn, root, "2");
nr_segment_set_name(c, "c");
nr_segment_set_timing(c, 10 * NR_TIME_DIVISOR_MS, 30 * NR_TIME_DIVISOR_MS);
d = nr_segment_start(&txn, c, "2");
nr_segment_set_name(d, "d");
nr_segment_set_timing(d, 30 * NR_TIME_DIVISOR_MS, 20 * NR_TIME_DIVISOR_MS);
nr_segment_end(&a);
nr_segment_end(&b);
nr_segment_end(&c);
nr_segment_end(&d);
nr_segment_end(&root);
cb_userdata.txn = &txn;
cb_userdata.total_time = 120 * NR_TIME_DIVISOR_MS;
result = nr_segment_tree_finalise(&txn, trace_limit, span_limit,
test_finalise_callback, &cb_userdata);
tlib_pass_if_size_t_equal(
"Traversing the segments of a should-sample transaction must invoke the "
"finalise callback",
1, cb_userdata.call_count);
tlib_pass_if_not_null(
"Traversing the segments of a should-sample transaction must populate a "
"result",
result.trace_json);
tlib_pass_if_str_equal(
"Traversing the segments of a should-trace transaction must create "
"expected trace JSON with all "
"segments",
result.trace_json,
// clang-format off
"["
"[0,{},{},"
"[0,50,\"ROOT\",{},["
"[0,50,\"`0\",{},["
"[10,40,\"`1\",{\"async_context\":\"`2\"},["
"[20,40,\"`3\",{\"async_context\":\"`2\"},[]]"
"]],"
"[10,40,\"`4\",{\"async_context\":\"`5\"},["
"[30,50,\"`6\",{\"async_context\":\"`5\"},[]]"
"]]"
"]]"
"]]"
",{}]"
","
"[\"WebTransaction\\/*\",\"a\",\"1\",\"b\",\"c\",\"2\",\"d\"]"
"]"
// clang-format on
);
obj = nro_create_from_json(result.trace_json);
tlib_pass_if_not_null(
"Traversing the segments of a should-trace transaction must create valid "
"JSON",
obj);
nro_delete(obj);
nr_txn_final_destroy_fields(&result);
nrm_table_destroy(&txn.scoped_metrics);
nrm_table_destroy(&txn.unscoped_metrics);
nr_string_pool_destroy(&txn.trace_strings);
nr_segment_destroy_tree(txn.segment_root);
nr_slab_destroy(&txn.segment_slab);
}
static void test_finalise_total_time_discounted_async(void) {
nrobj_t* obj;
nr_segment_t *a, *b, *c, *d;
test_finalise_callback_expected_t cb_userdata = {.call_count = 0};
nrtxn_t txn = {.abs_start_time = 1000};
size_t trace_limit = 10;
size_t span_limit = 0;
nrtxnfinal_t result;
nr_segment_t* root;
txn.segment_slab = nr_slab_create(sizeof(nr_segment_t), 0);
txn.trace_strings = nr_string_pool_create();
txn.scoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
txn.unscoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
txn.options.tt_threshold = 0;
txn.options.discount_main_context_blocking = true;
txn.status.recording = 1;
root = nr_slab_next(txn.segment_slab);
root->txn = &txn;
root->name = nr_string_add(txn.trace_strings, "WebTransaction/*");
txn.segment_root = root;
/*
* In order to exercise the total and exclusive time calculation, we're going
* to set up a basic async structure:
*
* time (ms): 0 10 20 30 40 50
* ROOT------------------------->
* a (ctx 1)--------->
* b (ctx 1)--->
* c (ctx 2)--------->
* d (ctx 2)--->
*
* On the main context, there is only the ROOT segment, which lasts 50 ms.
*
* Context 1 has two segments, which sum to an exclusive time of 30 ms: a has
* an exclusive time of 10 ms, and b has an exclusive time of 20 ms.
*
* Context 2 has two segments, which also sum to an exclusive time of 40 ms: c
* has an exclusive time of 20 ms, and d has an exclusive time of 20 ms.
*
* Finally, we have enabled main context discounting above, which means that
* the time spent off the main context should be subtracted from the total
* time. The sum of all exclusive times is 120 ms, and the total time spent
* off the main context is 40 ms, so the total time should be 80 ms, with a
* duration of 50 ms.
*/
nr_segment_set_timing(root, 0, 50 * NR_TIME_DIVISOR_MS);
a = nr_segment_start(&txn, root, "1");
nr_segment_set_name(a, "a");
nr_segment_set_timing(a, 10 * NR_TIME_DIVISOR_MS, 30 * NR_TIME_DIVISOR_MS);
b = nr_segment_start(&txn, a, "1");
nr_segment_set_name(b, "b");
nr_segment_set_timing(b, 20 * NR_TIME_DIVISOR_MS, 20 * NR_TIME_DIVISOR_MS);
c = nr_segment_start(&txn, root, "2");
nr_segment_set_name(c, "c");
nr_segment_set_timing(c, 10 * NR_TIME_DIVISOR_MS, 30 * NR_TIME_DIVISOR_MS);
d = nr_segment_start(&txn, c, "2");
nr_segment_set_name(d, "d");
nr_segment_set_timing(d, 30 * NR_TIME_DIVISOR_MS, 20 * NR_TIME_DIVISOR_MS);
nr_segment_end(&a);
nr_segment_end(&b);
nr_segment_end(&c);
nr_segment_end(&d);
nr_segment_end(&root);
cb_userdata.txn = &txn;
cb_userdata.total_time = 80 * NR_TIME_DIVISOR_MS;
result = nr_segment_tree_finalise(&txn, trace_limit, span_limit,
test_finalise_callback, &cb_userdata);
tlib_pass_if_size_t_equal(
"Traversing the segments of a should-sample transaction must invoke the "
"finalise callback",
1, cb_userdata.call_count);
tlib_pass_if_not_null(
"Traversing the segments of a should-sample transaction must populate a "
"result",
result.trace_json);
tlib_pass_if_str_equal(
"Traversing the segments of a should-trace transaction must create "
"expected trace JSON with all "
"segments",
result.trace_json,
// clang-format off
"["
"[0,{},{},"
"[0,50,\"ROOT\",{},["
"[0,50,\"`0\",{},["
"[10,40,\"`1\",{\"async_context\":\"`2\"},["
"[20,40,\"`3\",{\"async_context\":\"`2\"},[]]"
"]],"
"[10,40,\"`4\",{\"async_context\":\"`5\"},["
"[30,50,\"`6\",{\"async_context\":\"`5\"},[]]"
"]]"
"]]"
"]]"
",{}]"
","
"[\"WebTransaction\\/*\",\"a\",\"1\",\"b\",\"c\",\"2\",\"d\"]"
"]"
// clang-format on
);
obj = nro_create_from_json(result.trace_json);
tlib_pass_if_not_null(
"Traversing the segments of a should-trace transaction must create valid "
"JSON",
obj);
nro_delete(obj);
nr_txn_final_destroy_fields(&result);
nrm_table_destroy(&txn.scoped_metrics);
nrm_table_destroy(&txn.unscoped_metrics);
nr_string_pool_destroy(&txn.trace_strings);
nr_segment_destroy_tree(txn.segment_root);
nr_slab_destroy(&txn.segment_slab);
}
static void test_finalise_total_time_discounted_sync(void) {
nrobj_t* obj;
nr_segment_t *a, *b;
test_finalise_callback_expected_t cb_userdata = {.call_count = 0};
nrtxn_t txn = {.abs_start_time = 1000};
size_t trace_limit = 10;
size_t span_limit = 0;
nrtxnfinal_t result;
nr_segment_t* root;
txn.segment_slab = nr_slab_create(sizeof(nr_segment_t), 0);
txn.trace_strings = nr_string_pool_create();
txn.scoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
txn.unscoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
txn.options.tt_threshold = 0;
txn.options.discount_main_context_blocking = true;
txn.status.recording = 1;
root = nr_slab_next(txn.segment_slab);
root->txn = &txn;
root->name = nr_string_add(txn.trace_strings, "WebTransaction/*");
txn.segment_root = root;
/*
* In order to exercise the total and exclusive time calculation, we're going
* to set up a basic structure of synchronous segments:
*
* time (ms): 0 10 20 30 40 50
* ROOT------------------------->
* a----------------->
* b----------->
*
* On the main context, there is only the ROOT segment, which lasts 50 ms.
*
* We have enabled main context discounting above, which means that the time
* spent off the main context should be subtracted from the total time. Since
* this transaction is synchronous, there is no time off the main context, so
* the total time should remain 50 ms.
*/
nr_segment_set_timing(root, 0, 50 * NR_TIME_DIVISOR_MS);
a = nr_segment_start(&txn, root, NULL);
nr_segment_set_name(a, "a");
nr_segment_set_timing(a, 10 * NR_TIME_DIVISOR_MS, 30 * NR_TIME_DIVISOR_MS);
b = nr_segment_start(&txn, a, NULL);
nr_segment_set_name(b, "b");
nr_segment_set_timing(b, 20 * NR_TIME_DIVISOR_MS, 20 * NR_TIME_DIVISOR_MS);
nr_segment_end(&a);
nr_segment_end(&b);
nr_segment_end(&root);
cb_userdata.txn = &txn;
cb_userdata.total_time = 50 * NR_TIME_DIVISOR_MS;
result = nr_segment_tree_finalise(&txn, trace_limit, span_limit,
test_finalise_callback, &cb_userdata);
tlib_pass_if_size_t_equal(
"Traversing the segments of a should-sample transaction must invoke the "
"finalise callback",
1, cb_userdata.call_count);
tlib_pass_if_not_null(
"Traversing the segments of a should-sample transaction must populate a "
"result",
result.trace_json);
tlib_pass_if_str_equal(
"Traversing the segments of a should-trace transaction must create "
"expected trace JSON with all "
"segments",
result.trace_json,
// clang-format off
"["
"[0,{},{},"
"[0,50,\"ROOT\",{},["
"[0,50,\"`0\",{},["
"[10,40,\"`1\",{},["
"[20,40,\"`2\",{},[]]"
"]]"
"]]"
"]]"
",{}]"
","
"[\"WebTransaction\\/*\",\"a\",\"b\"]"
"]"
// clang-format on
);
obj = nro_create_from_json(result.trace_json);
tlib_pass_if_not_null(
"Traversing the segments of a should-trace transaction must create valid "
"JSON",
obj);
nro_delete(obj);
nr_txn_final_destroy_fields(&result);
nrm_table_destroy(&txn.scoped_metrics);
nrm_table_destroy(&txn.unscoped_metrics);
nr_string_pool_destroy(&txn.trace_strings);
nr_segment_destroy_tree(txn.segment_root);
nr_slab_destroy(&txn.segment_slab);
}
static void test_finalise_with_sampling(void) {
int i;
nrobj_t* obj;
nr_segment_t* current;
nrtxn_t txn = {.abs_start_time = 1000};
nrtime_t start_time = 0;
nrtime_t stop_time = 9000;
size_t trace_limit = NR_TEST_SEGMENT_TREE_SIZE;
size_t span_limit = 0;
char* segment_names[NR_TEST_SEGMENT_TREE_SIZE];
nrtxnfinal_t result;
nr_segment_t* root;
txn.segment_slab = nr_slab_create(sizeof(nr_segment_t), 0);
txn.trace_strings = nr_string_pool_create();
txn.scoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
txn.unscoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
root = nr_slab_next(txn.segment_slab);
root->txn = &txn;
root->start_time = start_time;
root->stop_time = stop_time;
root->name = nr_string_add(txn.trace_strings, "WebTransaction/*");
txn.segment_root = root;
current = root;
for (i = 0; i < NR_TEST_SEGMENT_TREE_SIZE; i++) {
nr_segment_t* segment = nr_slab_next(txn.segment_slab);
segment_names[i] = nr_alloca(5 * sizeof(char));
nr_itoa(segment_names[i], 5, i);
segment->start_time = start_time + ((i + 1) * 1000);
segment->stop_time = stop_time - ((i + 1) * 1000);
segment->name = nr_string_add(txn.trace_strings, segment_names[i]);
segment->txn = &txn;
nr_segment_add_metric(segment, segment_names[i], false);
nr_segment_add_metric(segment, segment_names[i], true);
nr_segment_children_init(¤t->children);
nr_segment_add_child(current, segment);
current = segment;
}
txn.segment_count = NR_TEST_SEGMENT_TREE_SIZE;
/*
* Test : Normal operation with sampling
*/
trace_limit = 2;
result = nr_segment_tree_finalise(&txn, trace_limit, span_limit, NULL, NULL);
tlib_pass_if_not_null(
"Traversing the segments of a should-trace, should-sample transaction "
"must populate a result",
result.trace_json);
tlib_pass_if_str_equal(
"Traversing the segments of a should-trace, should-sample transaction "
"must create expected trace JSON with two segments only",
result.trace_json,
"[[0,{},{},[0,9,\"ROOT\",{},[[0,9,\"`0\",{},[[1,8,\"`1\",{},[]]]]]],{}]"
",["
"\"WebTransaction\\/*\",\"0\"]]");
obj = nro_create_from_json(result.trace_json);
tlib_pass_if_not_null(
"Traversing the segments of a should-trace, should-sample transaction "
"must create valid JSON",
obj);
for (i = 0; i < NR_TEST_SEGMENT_TREE_SIZE; i++) {
nrtime_t expected_duration = nr_time_duration(start_time + ((i + 1) * 1000),
stop_time - ((i + 1) * 1000));
test_metric_created_ex(
"Traversing the segments of a should-trace, should-sample transaction "
"must create unscoped metrics as needed",
txn.unscoped_metrics, 0, expected_duration, i == 3 ? 1000 : 2000,
segment_names[i]);
test_metric_created_ex(
"Traversing the segments of a should-trace, should-sample transaction "
"must create scoped metrics as needed",
txn.scoped_metrics, 0, expected_duration, i == 3 ? 1000 : 2000,
segment_names[i]);
}
nro_delete(obj);
nr_txn_final_destroy_fields(&result);
nrm_table_destroy(&txn.scoped_metrics);
nrm_table_destroy(&txn.unscoped_metrics);
nr_string_pool_destroy(&txn.trace_strings);
nr_segment_destroy_tree(txn.segment_root);
nr_slab_destroy(&txn.segment_slab);
}
#define NR_TEST_SEGMENT_EXTENDED_TREE_SIZE 3000
static void test_finalise_with_extended_sampling(void) {
int i;
nrtxn_t txn = {.abs_start_time = 1000};
size_t trace_limit = 4;
size_t span_limit = 0;
nrtxnfinal_t result;
nrobj_t* obj;
nr_segment_t* current;
char* segment_names[NR_TEST_SEGMENT_EXTENDED_TREE_SIZE];
nr_segment_t* root;
txn.segment_slab = nr_slab_create(sizeof(nr_segment_t), 0);
txn.trace_strings = nr_string_pool_create();
txn.scoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
txn.unscoped_metrics = nrm_table_create(NR_METRIC_DEFAULT_LIMIT);
root = nr_slab_next(txn.segment_slab);
root->txn = &txn;
root->start_time = 0;
root->stop_time = 34000;
root->name = nr_string_add(txn.trace_strings, "WebTransaction/*");
txn.segment_root = root;
current = root;
for (i = 0; i < NR_TEST_SEGMENT_EXTENDED_TREE_SIZE; i++) {
nr_segment_t* segment = nr_slab_next(txn.segment_slab);
segment_names[i] = nr_alloca(5 * sizeof(char));
nr_itoa(segment_names[i], 5, i);
segment->start_time = i;
segment->stop_time = i * 10 + 1;
segment->name = nr_string_add(txn.trace_strings, segment_names[i]);
segment->txn = &txn;
nr_segment_add_metric(segment, segment_names[i], false);
nr_segment_add_metric(segment, segment_names[i], true);
nr_segment_children_init(¤t->children);
nr_segment_add_child(current, segment);
current = segment;
}
txn.segment_count = NR_TEST_SEGMENT_EXTENDED_TREE_SIZE;
result = nr_segment_tree_finalise(&txn, trace_limit, span_limit, NULL, NULL);
tlib_pass_if_not_null(
"Traversing the segments of a very large should-trace, should-sample "
"transaction must populate a result",
result.trace_json);
tlib_pass_if_str_equal(
"Traversing the segments of a very large should-trace, should-sample "
"transaction must create expected trace JSON with the four longest "
"segments",
result.trace_json,
"[[0,{},{},[0,34,\"ROOT\",{},[[0,34,\"`0\",{},[[2,29,\"`1\",{},[[2,29,"
"\"`"
"2\",{},[[2,29,\"`3\",{},[]]]]]]]]]],{}],[\"WebTransaction\\/"
"*\",\"2997\",\"2998\",\"2999\"]]");
obj = nro_create_from_json(result.trace_json);
tlib_pass_if_not_null(
"Traversing the segments of a very large should-trace, should-sample "
"transaction must create valid JSON",
obj);
tlib_pass_if_int_equal(
"Traversing the segments of a very large should-trace, should-sample "
"transaction must create unscoped metrics as needed, but subject to "
"the "
"overall metric limit",
NR_METRIC_DEFAULT_LIMIT + 1, nrm_table_size(txn.unscoped_metrics));
tlib_pass_if_int_equal(
"Traversing the segments of a very large should-trace, should-sample "
"transaction must create scoped metrics as needed, but subject to the "
"overall metric limit",
NR_METRIC_DEFAULT_LIMIT + 1, nrm_table_size(txn.scoped_metrics));
nro_delete(obj);
nr_txn_final_destroy_fields(&result);
nrm_table_destroy(&txn.scoped_metrics);
nrm_table_destroy(&txn.unscoped_metrics);
nr_string_pool_destroy(&txn.trace_strings);
nr_segment_destroy_tree(txn.segment_root);
nr_slab_destroy(&txn.segment_slab);
}
static void test_nearest_sampled_ancestor(void) {
nr_set_t* set;
nr_segment_t* ancestor = NULL;
nrtxn_t txn = {0};
nr_segment_t root = {.name = 0, .txn = &txn};
nr_segment_t A = {.name = 1, .txn = &txn};
nr_segment_t B = {.name = 2, .txn = &txn};
nr_segment_t child = {.name = 3, .txn = &txn};
txn.segment_root = &root;
/*
* ----------Root-----------
* /
* -----A-----
* /
* ----B----
* /
* -child-
*/
set = nr_set_create();
nr_set_insert(set, (void*)&child);
nr_segment_children_init(&root.children);
nr_segment_children_init(&A.children);
nr_segment_children_init(&B.children);
nr_segment_add_child(&root, &A);
nr_segment_add_child(&A, &B);
nr_segment_add_child(&B, &child);