/* Ensure all possible state transitions are called without causing problem */
static void test_init_shutdown(void) {
census_tracing_init();
census_tracing_init();
census_tracing_shutdown();
census_tracing_shutdown();
census_tracing_init();
}
static void test_add_method_tag_to_unknown_op_id(void) {
census_op_id unknown_id = {0xDEAD, 0xBEEF};
int ret = 0;
census_tracing_init();
ret = census_add_method_tag(unknown_id, "foo");
GPR_ASSERT(ret != 0);
census_tracing_shutdown();
}
static void test_get_trace_method_name(void) {
census_op_id id;
const char write_name[] = "service/method";
census_tracing_init();
id = census_tracing_start_op();
census_add_method_tag(id, write_name);
census_internal_lock_trace_store();
{
const char* read_name =
census_get_trace_method_name(census_get_trace_obj_locked(id));
GPR_ASSERT(strcmp(read_name, write_name) == 0);
}
census_internal_unlock_trace_store();
census_tracing_shutdown();
}
/* Test that record stats is noop when trace store is uninitialized. */
static void test_record_stats_with_trace_store_uninitialized(void) {
census_rpc_stats stats = {1, 2, 3, 4, 5.1, 6.2, 7.3, 8.4};
census_op_id id = {0, 0};
census_aggregated_rpc_stats agg_stats = {0, NULL};
census_init();
id = census_tracing_start_op();
census_add_method_tag(id, "m");
census_tracing_end_op(id);
/* shuts down trace store only. */
census_tracing_shutdown();
census_record_rpc_client_stats(id, &stats);
census_get_client_stats(&agg_stats);
GPR_ASSERT(agg_stats.num_entries == 0);
census_stats_store_shutdown();
}
static void test_trace_print(void) {
census_op_id id;
int i;
const char* annotation_txt[4] = {"abc", "", "$%^ *()_"};
char long_txt[CENSUS_MAX_ANNOTATION_LENGTH + 10];
memset(long_txt, 'a', GPR_ARRAY_SIZE(long_txt));
long_txt[CENSUS_MAX_ANNOTATION_LENGTH + 9] = '\0';
annotation_txt[3] = long_txt;
census_tracing_init();
id = census_tracing_start_op();
/* Adds large number of annotations to each trace */
for (i = 0; i < 1000; i++) {
census_tracing_print(id,
annotation_txt[i % GPR_ARRAY_SIZE(annotation_txt)]);
}
census_tracing_end_op(id);
census_tracing_shutdown();
}
static void test_concurrency(void) {
#define NUM_THREADS 1000
gpr_thd_id tid[NUM_THREADS];
int i = 0;
thd_arg arg;
arg.num_done = 0;
gpr_mu_init(&arg.mu);
gpr_cv_init(&arg.done);
census_tracing_init();
for (i = 0; i < NUM_THREADS; ++i) {
gpr_thd_new(tid + i, mimic_trace_op_sequences, &arg, NULL);
}
gpr_mu_lock(&arg.mu);
while (arg.num_done < NUM_THREADS) {
gpr_log(GPR_INFO, "num done %d", arg.num_done);
gpr_cv_wait(&arg.done, &arg.mu, gpr_inf_future);
}
gpr_mu_unlock(&arg.mu);
census_tracing_shutdown();
#undef NUM_THREADS
}
static void test_get_active_ops(void) {
census_op_id id_1, id_2, id_3;
census_trace_obj** active_ops;
const char* annotation_txt[] = {"annotation 1", "a2"};
int i = 0;
int n = 0;
gpr_log(GPR_INFO, "test_get_active_ops");
census_tracing_init();
/* No active ops before calling start_op(). */
active_ops = census_get_active_ops(&n);
GPR_ASSERT(active_ops == NULL);
GPR_ASSERT(n == 0);
/* Starts one op */
id_1 = census_tracing_start_op();
census_add_method_tag(id_1, "foo_1");
active_ops = census_get_active_ops(&n);
GPR_ASSERT(active_ops != NULL);
GPR_ASSERT(n == 1);
GPR_ASSERT(ids_equal(active_ops[0]->id, id_1));
census_trace_obj_destroy(active_ops[0]);
gpr_free(active_ops);
active_ops = NULL;
/* Start the second and the third ops */
id_2 = census_tracing_start_op();
census_add_method_tag(id_2, "foo_2");
id_3 = census_tracing_start_op();
census_add_method_tag(id_3, "foo_3");
active_ops = census_get_active_ops(&n);
GPR_ASSERT(n == 3);
for (i = 0; i < 3; i++) {
census_trace_obj_destroy(active_ops[i]);
}
gpr_free(active_ops);
active_ops = NULL;
/* End the second op and add annotations to the third ops*/
census_tracing_end_op(id_2);
census_tracing_print(id_3, annotation_txt[0]);
census_tracing_print(id_3, annotation_txt[1]);
active_ops = census_get_active_ops(&n);
GPR_ASSERT(active_ops != NULL);
GPR_ASSERT(n == 2);
for (i = 0; i < 2; i++) {
census_trace_obj_destroy(active_ops[i]);
}
gpr_free(active_ops);
active_ops = NULL;
/* End all ops. */
census_tracing_end_op(id_1);
census_tracing_end_op(id_3);
active_ops = census_get_active_ops(&n);
GPR_ASSERT(active_ops == NULL);
GPR_ASSERT(n == 0);
census_tracing_shutdown();
}
void census_shutdown(void) {
census_stats_store_shutdown();
census_tracing_shutdown();
}
