Fix UpdatesTest.UpdateBalancersDeadUpdate expectation
diff --git a/test/cpp/end2end/grpclb_end2end_test.cc b/test/cpp/end2end/grpclb_end2end_test.cc
index c15ab88..bbf3da4 100644
--- a/test/cpp/end2end/grpclb_end2end_test.cc
+++ b/test/cpp/end2end/grpclb_end2end_test.cc
@@ -353,11 +353,6 @@
"balancer", server_host_, balancers_.back().get()));
}
ResetStub();
- std::vector<AddressData> addresses;
- for (size_t i = 0; i < balancer_servers_.size(); ++i) {
- addresses.emplace_back(AddressData{balancer_servers_[i].port_, true, ""});
- }
- SetNextResolution(addresses);
}
void TearDown() override {
@@ -370,6 +365,14 @@
grpc_fake_resolver_response_generator_unref(response_generator_);
}
+ void SetNextResolutionAllBalancers() {
+ std::vector<AddressData> addresses;
+ for (size_t i = 0; i < balancer_servers_.size(); ++i) {
+ addresses.emplace_back(AddressData{balancer_servers_[i].port_, true, ""});
+ }
+ SetNextResolution(addresses);
+ }
+
void ResetStub(int fallback_timeout = 0) {
ChannelArguments args;
args.SetGrpclbFallbackTimeout(fallback_timeout);
@@ -581,6 +584,7 @@
};
TEST_F(SingleBalancerTest, Vanilla) {
+ SetNextResolutionAllBalancers();
const size_t kNumRpcsPerAddress = 100;
ScheduleResponseForBalancer(
0, BalancerServiceImpl::BuildResponseForBackends(GetBackendPorts(), {}),
@@ -608,6 +612,7 @@
}
TEST_F(SingleBalancerTest, InitiallyEmptyServerlist) {
+ SetNextResolutionAllBalancers();
const int kServerlistDelayMs = 500 * grpc_test_slowdown_factor();
const int kCallDeadlineMs = 1000 * grpc_test_slowdown_factor();
@@ -645,6 +650,7 @@
}
TEST_F(SingleBalancerTest, Fallback) {
+ SetNextResolutionAllBalancers();
const int kFallbackTimeoutMs = 200 * grpc_test_slowdown_factor();
const int kServerlistDelayMs = 500 * grpc_test_slowdown_factor();
const size_t kNumBackendInResolution = backends_.size() / 2;
@@ -711,6 +717,7 @@
}
TEST_F(SingleBalancerTest, FallbackUpdate) {
+ SetNextResolutionAllBalancers();
const int kFallbackTimeoutMs = 200 * grpc_test_slowdown_factor();
const int kServerlistDelayMs = 500 * grpc_test_slowdown_factor();
const size_t kNumBackendInResolution = backends_.size() / 3;
@@ -818,6 +825,7 @@
}
TEST_F(SingleBalancerTest, BackendsRestart) {
+ SetNextResolutionAllBalancers();
const size_t kNumRpcsPerAddress = 100;
ScheduleResponseForBalancer(
0, BalancerServiceImpl::BuildResponseForBackends(GetBackendPorts(), {}),
@@ -857,6 +865,7 @@
};
TEST_F(UpdatesTest, UpdateBalancers) {
+ SetNextResolutionAllBalancers();
const std::vector<int> first_backend{GetBackendPorts()[0]};
const std::vector<int> second_backend{GetBackendPorts()[1]};
ScheduleResponseForBalancer(
@@ -919,6 +928,7 @@
// verify that the LB channel inside grpclb keeps the initial connection (which
// by definition is also present in the update).
TEST_F(UpdatesTest, UpdateBalancersRepeated) {
+ SetNextResolutionAllBalancers();
const std::vector<int> first_backend{GetBackendPorts()[0]};
const std::vector<int> second_backend{GetBackendPorts()[0]};
@@ -989,6 +999,9 @@
}
TEST_F(UpdatesTest, UpdateBalancersDeadUpdate) {
+ std::vector<AddressData> addresses;
+ addresses.emplace_back(AddressData{balancer_servers_[0].port_, true, ""});
+ SetNextResolution(addresses);
const std::vector<int> first_backend{GetBackendPorts()[0]};
const std::vector<int> second_backend{GetBackendPorts()[1]};
@@ -1030,7 +1043,7 @@
EXPECT_EQ(0U, balancer_servers_[2].service_->request_count());
EXPECT_EQ(0U, balancer_servers_[2].service_->response_count());
- std::vector<AddressData> addresses;
+ addresses.clear();
addresses.emplace_back(AddressData{balancer_servers_[1].port_, true, ""});
gpr_log(GPR_INFO, "========= ABOUT TO UPDATE 1 ==========");
SetNextResolution(addresses);
@@ -1055,8 +1068,14 @@
balancers_[2]->NotifyDoneWithServerlists();
EXPECT_EQ(1U, balancer_servers_[0].service_->request_count());
EXPECT_EQ(1U, balancer_servers_[0].service_->response_count());
- EXPECT_EQ(1U, balancer_servers_[1].service_->request_count());
- EXPECT_EQ(1U, balancer_servers_[1].service_->response_count());
+ // The second balancer, published as part of the first update, may end up
+ // getting two requests (that is, 1 <= #req <= 2) if the LB call retry timer
+ // firing races with the arrival of the update containing the second
+ // balancer.
+ EXPECT_GE(balancer_servers_[1].service_->request_count(), 1U);
+ EXPECT_GE(balancer_servers_[1].service_->response_count(), 1U);
+ EXPECT_LE(balancer_servers_[1].service_->request_count(), 2U);
+ EXPECT_LE(balancer_servers_[1].service_->response_count(), 2U);
EXPECT_EQ(0U, balancer_servers_[2].service_->request_count());
EXPECT_EQ(0U, balancer_servers_[2].service_->response_count());
// Check LB policy name for the channel.
@@ -1064,6 +1083,7 @@
}
TEST_F(SingleBalancerTest, Drop) {
+ SetNextResolutionAllBalancers();
const size_t kNumRpcsPerAddress = 100;
const int num_of_drop_by_rate_limiting_addresses = 1;
const int num_of_drop_by_load_balancing_addresses = 2;
@@ -1107,6 +1127,7 @@
}
TEST_F(SingleBalancerTest, DropAllFirst) {
+ SetNextResolutionAllBalancers();
// All registered addresses are marked as "drop".
const int num_of_drop_by_rate_limiting_addresses = 1;
const int num_of_drop_by_load_balancing_addresses = 1;
@@ -1122,6 +1143,7 @@
}
TEST_F(SingleBalancerTest, DropAll) {
+ SetNextResolutionAllBalancers();
ScheduleResponseForBalancer(
0, BalancerServiceImpl::BuildResponseForBackends(GetBackendPorts(), {}),
0);
@@ -1152,6 +1174,7 @@
};
TEST_F(SingleBalancerWithClientLoadReportingTest, Vanilla) {
+ SetNextResolutionAllBalancers();
const size_t kNumRpcsPerAddress = 100;
ScheduleResponseForBalancer(
0, BalancerServiceImpl::BuildResponseForBackends(GetBackendPorts(), {}),
@@ -1186,6 +1209,7 @@
}
TEST_F(SingleBalancerWithClientLoadReportingTest, Drop) {
+ SetNextResolutionAllBalancers();
const size_t kNumRpcsPerAddress = 3;
const int num_of_drop_by_rate_limiting_addresses = 2;
const int num_of_drop_by_load_balancing_addresses = 1;