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-rw-r--r--test/core/client_channel/lb_policies_test.c4
-rw-r--r--test/core/end2end/goaway_server_test.c10
-rw-r--r--test/core/end2end/tests/connectivity.c10
-rw-r--r--test/core/end2end/tests/simple_delayed_request.c19
-rw-r--r--test/core/support/backoff_test.c91
5 files changed, 108 insertions, 26 deletions
diff --git a/test/core/client_channel/lb_policies_test.c b/test/core/client_channel/lb_policies_test.c
index 95595d7c51..404db19568 100644
--- a/test/core/client_channel/lb_policies_test.c
+++ b/test/core/client_channel/lb_policies_test.c
@@ -481,7 +481,7 @@ void run_spec(const test_spec *spec) {
gpr_asprintf(&client_hostport, "ipv4:%s", servers_hostports_str);
arg_array[0].type = GRPC_ARG_INTEGER;
- arg_array[0].key = "grpc.testing.fixed_reconnect_backoff";
+ arg_array[0].key = "grpc.testing.fixed_reconnect_backoff_ms";
arg_array[0].value.integer = RETRY_TIMEOUT;
arg_array[1].type = GRPC_ARG_STRING;
arg_array[1].key = GRPC_ARG_LB_POLICY_NAME;
@@ -519,7 +519,7 @@ static grpc_channel *create_client(const servers_fixture *f) {
gpr_asprintf(&client_hostport, "ipv4:%s", servers_hostports_str);
arg_array[0].type = GRPC_ARG_INTEGER;
- arg_array[0].key = "grpc.testing.fixed_reconnect_backoff";
+ arg_array[0].key = "grpc.testing.fixed_reconnect_backoff_ms";
arg_array[0].value.integer = RETRY_TIMEOUT;
arg_array[1].type = GRPC_ARG_STRING;
arg_array[1].key = GRPC_ARG_LB_POLICY_NAME;
diff --git a/test/core/end2end/goaway_server_test.c b/test/core/end2end/goaway_server_test.c
index a8c7b2be5a..cd68b390bb 100644
--- a/test/core/end2end/goaway_server_test.c
+++ b/test/core/end2end/goaway_server_test.c
@@ -126,8 +126,16 @@ int main(int argc, char **argv) {
char *addr;
+ grpc_channel_args client_args;
+ grpc_arg arg_array[1];
+ arg_array[0].type = GRPC_ARG_INTEGER;
+ arg_array[0].key = "grpc.testing.fixed_reconnect_backoff_ms";
+ arg_array[0].value.integer = 1000;
+ client_args.args = arg_array;
+ client_args.num_args = 1;
+
/* create a channel that picks first amongst the servers */
- grpc_channel *chan = grpc_insecure_channel_create("test", NULL, NULL);
+ grpc_channel *chan = grpc_insecure_channel_create("test", &client_args, NULL);
/* and an initial call to them */
grpc_call *call1 = grpc_channel_create_call(
chan, NULL, GRPC_PROPAGATE_DEFAULTS, cq, "/foo", "127.0.0.1",
diff --git a/test/core/end2end/tests/connectivity.c b/test/core/end2end/tests/connectivity.c
index 260297ebd4..42475c7331 100644
--- a/test/core/end2end/tests/connectivity.c
+++ b/test/core/end2end/tests/connectivity.c
@@ -68,7 +68,15 @@ static void test_connectivity(grpc_end2end_test_config config) {
gpr_thd_options thdopt = gpr_thd_options_default();
gpr_thd_id thdid;
- config.init_client(&f, NULL);
+ grpc_channel_args client_args;
+ grpc_arg arg_array[1];
+ arg_array[0].type = GRPC_ARG_INTEGER;
+ arg_array[0].key = "grpc.testing.fixed_reconnect_backoff_ms";
+ arg_array[0].value.integer = 1000;
+ client_args.args = arg_array;
+ client_args.num_args = 1;
+
+ config.init_client(&f, &client_args);
ce.channel = f.client;
ce.cq = f.cq;
diff --git a/test/core/end2end/tests/simple_delayed_request.c b/test/core/end2end/tests/simple_delayed_request.c
index ec40c8f22d..414a03d98b 100644
--- a/test/core/end2end/tests/simple_delayed_request.c
+++ b/test/core/end2end/tests/simple_delayed_request.c
@@ -200,21 +200,36 @@ static void simple_delayed_request_body(grpc_end2end_test_config config,
static void test_simple_delayed_request_short(grpc_end2end_test_config config) {
grpc_end2end_test_fixture f;
+ grpc_channel_args client_args;
+ grpc_arg arg_array[1];
+ arg_array[0].type = GRPC_ARG_INTEGER;
+ arg_array[0].key = "grpc.testing.fixed_reconnect_backoff_ms";
+ arg_array[0].value.integer = 1000;
+ client_args.args = arg_array;
+ client_args.num_args = 1;
gpr_log(GPR_INFO, "%s/%s", "test_simple_delayed_request_short", config.name);
f = config.create_fixture(NULL, NULL);
- simple_delayed_request_body(config, &f, NULL, NULL, 100000);
+
+ simple_delayed_request_body(config, &f, &client_args, NULL, 100000);
end_test(&f);
config.tear_down_data(&f);
}
static void test_simple_delayed_request_long(grpc_end2end_test_config config) {
grpc_end2end_test_fixture f;
+ grpc_channel_args client_args;
+ grpc_arg arg_array[1];
+ arg_array[0].type = GRPC_ARG_INTEGER;
+ arg_array[0].key = "grpc.testing.fixed_reconnect_backoff_ms";
+ arg_array[0].value.integer = 1000;
+ client_args.args = arg_array;
+ client_args.num_args = 1;
gpr_log(GPR_INFO, "%s/%s", "test_simple_delayed_request_long", config.name);
f = config.create_fixture(NULL, NULL);
/* This timeout should be longer than a single retry */
- simple_delayed_request_body(config, &f, NULL, NULL, 1500000);
+ simple_delayed_request_body(config, &f, &client_args, NULL, 1500000);
end_test(&f);
config.tear_down_data(&f);
}
diff --git a/test/core/support/backoff_test.c b/test/core/support/backoff_test.c
index 13cba7d750..ad6e5a98f2 100644
--- a/test/core/support/backoff_test.c
+++ b/test/core/support/backoff_test.c
@@ -39,61 +39,110 @@
static void test_constant_backoff(void) {
gpr_backoff backoff;
- gpr_backoff_init(&backoff, 1.0, 0.0, 1000, 1000);
+ gpr_backoff_init(&backoff, 200 /* initial timeout */, 1.0 /* multiplier */,
+ 0.0 /* jitter */, 100 /* min timeout */,
+ 1000 /* max timeout */);
gpr_timespec now = gpr_time_0(GPR_TIMESPAN);
gpr_timespec next = gpr_backoff_begin(&backoff, now);
- GPR_ASSERT(gpr_time_to_millis(gpr_time_sub(next, now)) == 1000);
+ GPR_ASSERT(gpr_time_to_millis(gpr_time_sub(next, now)) == 200);
for (int i = 0; i < 10000; i++) {
next = gpr_backoff_step(&backoff, now);
- GPR_ASSERT(gpr_time_to_millis(gpr_time_sub(next, now)) == 1000);
+ GPR_ASSERT(gpr_time_to_millis(gpr_time_sub(next, now)) == 200);
now = next;
}
}
-static void test_no_jitter_backoff(void) {
+static void test_min_connect(void) {
gpr_backoff backoff;
- gpr_backoff_init(&backoff, 2.0, 0.0, 1, 513);
+ gpr_backoff_init(&backoff, 100 /* initial timeout */, 1.0 /* multiplier */,
+ 0.0 /* jitter */, 200 /* min timeout */,
+ 1000 /* max timeout */);
gpr_timespec now = gpr_time_0(GPR_TIMESPAN);
gpr_timespec next = gpr_backoff_begin(&backoff, now);
- GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(1, GPR_TIMESPAN), next) == 0);
- now = next;
- next = gpr_backoff_step(&backoff, now);
- GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(3, GPR_TIMESPAN), next) == 0);
+ GPR_ASSERT(gpr_time_to_millis(gpr_time_sub(next, now)) == 200);
+}
+
+static void test_no_jitter_backoff(void) {
+ gpr_backoff backoff;
+ gpr_backoff_init(&backoff, 2 /* initial timeout */, 2.0 /* multiplier */,
+ 0.0 /* jitter */, 1 /* min timeout */,
+ 513 /* max timeout */);
+ // x_1 = 2
+ // x_n = 2**i + x_{i-1} ( = 2**(n+1) - 2 )
+ gpr_timespec now = gpr_time_0(GPR_TIMESPAN);
+ gpr_timespec next = gpr_backoff_begin(&backoff, now);
+ GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(2, GPR_TIMESPAN), next) == 0);
now = next;
next = gpr_backoff_step(&backoff, now);
- GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(7, GPR_TIMESPAN), next) == 0);
+ GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(6, GPR_TIMESPAN), next) == 0);
now = next;
next = gpr_backoff_step(&backoff, now);
- GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(15, GPR_TIMESPAN), next) == 0);
+ GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(14, GPR_TIMESPAN), next) == 0);
now = next;
next = gpr_backoff_step(&backoff, now);
- GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(31, GPR_TIMESPAN), next) == 0);
+ GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(30, GPR_TIMESPAN), next) == 0);
now = next;
next = gpr_backoff_step(&backoff, now);
- GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(63, GPR_TIMESPAN), next) == 0);
+ GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(62, GPR_TIMESPAN), next) == 0);
now = next;
next = gpr_backoff_step(&backoff, now);
- GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(127, GPR_TIMESPAN), next) == 0);
+ GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(126, GPR_TIMESPAN), next) == 0);
now = next;
next = gpr_backoff_step(&backoff, now);
- GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(255, GPR_TIMESPAN), next) == 0);
+ GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(254, GPR_TIMESPAN), next) == 0);
now = next;
next = gpr_backoff_step(&backoff, now);
- GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(511, GPR_TIMESPAN), next) == 0);
+ GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(510, GPR_TIMESPAN), next) == 0);
now = next;
next = gpr_backoff_step(&backoff, now);
- GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(1023, GPR_TIMESPAN), next) == 0);
+ GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(1022, GPR_TIMESPAN), next) == 0);
now = next;
next = gpr_backoff_step(&backoff, now);
- GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(1536, GPR_TIMESPAN), next) == 0);
+ // Hit the maximum timeout. From this point onwards, retries will increase
+ // only by max timeout.
+ GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(1535, GPR_TIMESPAN), next) == 0);
now = next;
next = gpr_backoff_step(&backoff, now);
- GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(2049, GPR_TIMESPAN), next) == 0);
+ GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(2048, GPR_TIMESPAN), next) == 0);
now = next;
next = gpr_backoff_step(&backoff, now);
- GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(2562, GPR_TIMESPAN), next) == 0);
+ GPR_ASSERT(gpr_time_cmp(gpr_time_from_millis(2561, GPR_TIMESPAN), next) == 0);
+}
+
+static void test_jitter_backoff(void) {
+ const int64_t initial_timeout = 500;
+ const double jitter = 0.1;
+ gpr_backoff backoff;
+ gpr_backoff_init(&backoff, initial_timeout, 1.0 /* multiplier */, jitter,
+ 100 /* min timeout */, 1000 /* max timeout */);
+
+ backoff.rng_state = 0; // force consistent PRNG
+
+ gpr_timespec now = gpr_time_0(GPR_TIMESPAN);
+ gpr_timespec next = gpr_backoff_begin(&backoff, now);
+ GPR_ASSERT(gpr_time_to_millis(gpr_time_sub(next, now)) == 500);
+
+ int64_t expected_next_lower_bound =
+ (int64_t)((double)initial_timeout * (1 - jitter));
+ int64_t expected_next_upper_bound =
+ (int64_t)((double)initial_timeout * (1 + jitter));
+
+ for (int i = 0; i < 10000; i++) {
+ next = gpr_backoff_step(&backoff, now);
+
+ // next-now must be within (jitter*100)% of the previous timeout.
+ const int64_t timeout_millis = gpr_time_to_millis(gpr_time_sub(next, now));
+ GPR_ASSERT(timeout_millis >= expected_next_lower_bound);
+ GPR_ASSERT(timeout_millis <= expected_next_upper_bound);
+
+ expected_next_lower_bound =
+ (int64_t)((double)timeout_millis * (1 - jitter));
+ expected_next_upper_bound =
+ (int64_t)((double)timeout_millis * (1 + jitter));
+ now = next;
+ }
}
int main(int argc, char **argv) {
@@ -101,7 +150,9 @@ int main(int argc, char **argv) {
gpr_time_init();
test_constant_backoff();
+ test_min_connect();
test_no_jitter_backoff();
+ test_jitter_backoff();
return 0;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-16 04:51:50 +0000