diff options
Diffstat (limited to 'test/cpp/end2end/client_lb_end2end_test.cc')
-rw-r--r-- | test/cpp/end2end/client_lb_end2end_test.cc | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/test/cpp/end2end/client_lb_end2end_test.cc b/test/cpp/end2end/client_lb_end2end_test.cc index c5a73a2469..7fe0da8aae 100644 --- a/test/cpp/end2end/client_lb_end2end_test.cc +++ b/test/cpp/end2end/client_lb_end2end_test.cc @@ -408,6 +408,36 @@ TEST_F(ClientLbEnd2endTest, PickFirstBackOffMinReconnect) { gpr_atm_rel_store(&g_connection_delay_ms, 0); } +TEST_F(ClientLbEnd2endTest, PickFirstResetConnectionBackoff) { + ChannelArguments args; + constexpr int kInitialBackOffMs = 1000; + args.SetInt(GRPC_ARG_INITIAL_RECONNECT_BACKOFF_MS, kInitialBackOffMs); + const std::vector<int> ports = {grpc_pick_unused_port_or_die()}; + auto channel = BuildChannel("pick_first", args); + auto stub = BuildStub(channel); + SetNextResolution(ports); + // The channel won't become connected (there's no server). + EXPECT_FALSE( + channel->WaitForConnected(grpc_timeout_milliseconds_to_deadline(10))); + // Bring up a server on the chosen port. + StartServers(1, ports); + const gpr_timespec t0 = gpr_now(GPR_CLOCK_MONOTONIC); + // Wait for connect, but not long enough. This proves that we're + // being throttled by initial backoff. + EXPECT_FALSE( + channel->WaitForConnected(grpc_timeout_milliseconds_to_deadline(10))); + // Reset connection backoff. + experimental::ChannelResetConnectionBackoff(channel.get()); + // Wait for connect. Should happen ~immediately. + EXPECT_TRUE( + channel->WaitForConnected(grpc_timeout_milliseconds_to_deadline(10))); + const gpr_timespec t1 = gpr_now(GPR_CLOCK_MONOTONIC); + const grpc_millis waited_ms = gpr_time_to_millis(gpr_time_sub(t1, t0)); + gpr_log(GPR_DEBUG, "Waited %" PRId64 " milliseconds", waited_ms); + // We should have waited less than kInitialBackOffMs. + EXPECT_LT(waited_ms, kInitialBackOffMs); +} + TEST_F(ClientLbEnd2endTest, PickFirstUpdates) { // Start servers and send one RPC per server. const int kNumServers = 3; |