xref: /aosp_15_r20/external/grpc-grpc/test/core/end2end/tests/retry_throttled.cc (revision cc02d7e222339f7a4f6ba5f422e6413f4bd931f2)
1 //
2 //
3 // Copyright 2017 gRPC authors.
4 //
5 // Licensed under the Apache License, Version 2.0 (the "License");
6 // you may not use this file except in compliance with the License.
7 // You may obtain a copy of the License at
8 //
9 //     http://www.apache.org/licenses/LICENSE-2.0
10 //
11 // Unless required by applicable law or agreed to in writing, software
12 // distributed under the License is distributed on an "AS IS" BASIS,
13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 // See the License for the specific language governing permissions and
15 // limitations under the License.
16 //
17 //
18 
19 #include <memory>
20 
21 #include "absl/types/optional.h"
22 #include "gtest/gtest.h"
23 
24 #include <grpc/impl/channel_arg_names.h>
25 #include <grpc/status.h>
26 
27 #include "src/core/lib/channel/channel_args.h"
28 #include "src/core/lib/gprpp/time.h"
29 #include "test/core/end2end/end2end_tests.h"
30 
31 namespace grpc_core {
32 namespace {
33 
34 // Tests that we don't retry when throttled.
35 // - 1 retry allowed for ABORTED status
36 // - first attempt gets ABORTED but is over limit, so no retry is done
CORE_END2END_TEST(RetryTest,RetryThrottled)37 CORE_END2END_TEST(RetryTest, RetryThrottled) {
38   InitServer(ChannelArgs().Set(
39       GRPC_ARG_SERVICE_CONFIG,
40       "{\n"
41       "  \"methodConfig\": [ {\n"
42       "    \"name\": [\n"
43       "      { \"service\": \"service\", \"method\": \"method\" }\n"
44       "    ],\n"
45       "    \"retryPolicy\": {\n"
46       "      \"maxAttempts\": 2,\n"
47       "      \"initialBackoff\": \"1s\",\n"
48       "      \"maxBackoff\": \"120s\",\n"
49       "      \"backoffMultiplier\": 1.6,\n"
50       "      \"retryableStatusCodes\": [ \"ABORTED\" ]\n"
51       "    }\n"
52       "  } ],\n"
53       // A single failure will cause us to be throttled.
54       // (This is not a very realistic config, but it works for the
55       // purposes of this test.)
56       "  \"retryThrottling\": {\n"
57       "    \"maxTokens\": 2,\n"
58       "    \"tokenRatio\": 1.0\n"
59       "  }\n"
60       "}"));
61   InitClient(ChannelArgs());
62   auto c =
63       NewClientCall("/service/method").Timeout(Duration::Seconds(30)).Create();
64   EXPECT_NE(c.GetPeer(), absl::nullopt);
65   IncomingStatusOnClient server_status;
66   IncomingMetadata server_initial_metadata;
67   IncomingMessage server_message;
68   c.NewBatch(1)
69       .SendInitialMetadata({})
70       .SendMessage("foo")
71       .RecvMessage(server_message)
72       .SendCloseFromClient()
73       .RecvInitialMetadata(server_initial_metadata)
74       .RecvStatusOnClient(server_status);
75   auto s = RequestCall(101);
76   Expect(101, true);
77   Step();
78   EXPECT_NE(s.GetPeer(), absl::nullopt);
79   EXPECT_NE(c.GetPeer(), absl::nullopt);
80   IncomingCloseOnServer client_close;
81   s.NewBatch(102)
82       .SendInitialMetadata({})
83       .SendStatusFromServer(GRPC_STATUS_ABORTED, "xyz", {})
84       .RecvCloseOnServer(client_close);
85   Expect(102, true);
86   Expect(1, true);
87   Step();
88   EXPECT_EQ(server_status.status(), GRPC_STATUS_ABORTED);
89   EXPECT_EQ(server_status.message(), "xyz");
90   EXPECT_EQ(s.method(), "/service/method");
91   EXPECT_FALSE(client_close.was_cancelled());
92 }
93 
94 }  // namespace
95 }  // namespace grpc_core
96