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 <string>
20
21 #include "absl/types/optional.h"
22 #include "gtest/gtest.h"
23
24 #include <grpc/impl/channel_arg_names.h>
25 #include <grpc/slice.h>
26 #include <grpc/status.h>
27
28 #include "src/core/lib/channel/channel_args.h"
29 #include "src/core/lib/gprpp/time.h"
30 #include "test/core/end2end/end2end_tests.h"
31
32 namespace grpc_core {
33 namespace {
34
35 // Tests that we hold refs to send_initial_metadata payload while
36 // cached, even after the caller has released its refs:
37 // - 2 retries allowed for ABORTED status
38 // - first attempt returns ABORTED
39 // - second attempt returns OK
CORE_END2END_TEST(RetryTest,RetrySendInitialMetadataRefs)40 CORE_END2END_TEST(RetryTest, RetrySendInitialMetadataRefs) {
41 InitServer(ChannelArgs());
42 InitClient(ChannelArgs().Set(
43 GRPC_ARG_SERVICE_CONFIG,
44 "{\n"
45 " \"methodConfig\": [ {\n"
46 " \"name\": [\n"
47 " { \"service\": \"service\", \"method\": \"method\" }\n"
48 " ],\n"
49 " \"retryPolicy\": {\n"
50 " \"maxAttempts\": 3,\n"
51 " \"initialBackoff\": \"1s\",\n"
52 " \"maxBackoff\": \"120s\",\n"
53 " \"backoffMultiplier\": 1.6,\n"
54 " \"retryableStatusCodes\": [ \"ABORTED\" ]\n"
55 " }\n"
56 " } ]\n"
57 "}"));
58 auto c =
59 NewClientCall("/service/method").Timeout(Duration::Seconds(5)).Create();
60 EXPECT_NE(c.GetPeer(), absl::nullopt);
61 c.NewBatch(1)
62 .SendInitialMetadata(
63 {// First element is short enough for slices to be inlined.
64 {"foo", "bar"},
65 // Second element requires slice allocation.
66 {std::string(GRPC_SLICE_INLINED_SIZE + 1, 'x'),
67 std::string(GRPC_SLICE_INLINED_SIZE + 1, 'y')}})
68 .SendMessage("foo")
69 .SendCloseFromClient();
70 Expect(1, true);
71 Step();
72 IncomingMessage server_message;
73 IncomingMetadata server_initial_metadata;
74 IncomingStatusOnClient server_status;
75 c.NewBatch(2)
76 .RecvMessage(server_message)
77 .RecvInitialMetadata(server_initial_metadata)
78 .RecvStatusOnClient(server_status);
79 auto s = RequestCall(101);
80 Expect(101, true);
81 Step();
82 // Make sure the "grpc-previous-rpc-attempts" header was not sent in the
83 // initial attempt.
84 EXPECT_EQ(s.GetInitialMetadata("grpc-previous-rpc-attempts"), absl::nullopt);
85 EXPECT_NE(s.GetPeer(), absl::nullopt);
86 EXPECT_NE(c.GetPeer(), absl::nullopt);
87 IncomingCloseOnServer client_close;
88 s.NewBatch(102)
89 .SendInitialMetadata({})
90 .SendStatusFromServer(GRPC_STATUS_ABORTED, "xyz", {})
91 .RecvCloseOnServer(client_close);
92 Expect(102, true);
93 Step();
94 auto s2 = RequestCall(201);
95 Expect(201, true);
96 Step();
97 // Make sure the "grpc-previous-rpc-attempts" header was sent in the retry.
98 EXPECT_EQ(s2.GetInitialMetadata("grpc-previous-rpc-attempts"), "1");
99 // It should also contain the initial metadata, even though the client
100 // freed it already.
101 EXPECT_EQ(s2.GetInitialMetadata("foo"), "bar");
102 EXPECT_EQ(
103 s2.GetInitialMetadata(std::string(GRPC_SLICE_INLINED_SIZE + 1, 'x')),
104 std::string(GRPC_SLICE_INLINED_SIZE + 1, 'y'));
105 EXPECT_NE(s.GetPeer(), absl::nullopt);
106 EXPECT_NE(c.GetPeer(), absl::nullopt);
107 IncomingMessage client_message;
108 s2.NewBatch(202).RecvMessage(client_message);
109 IncomingCloseOnServer client_close2;
110 s2.NewBatch(203)
111 .SendInitialMetadata({})
112 .SendMessage("bar")
113 .SendStatusFromServer(GRPC_STATUS_OK, "xyz", {})
114 .RecvCloseOnServer(client_close2);
115 Expect(202, true);
116 Expect(203, true);
117 Expect(2, true);
118 Step();
119 EXPECT_EQ(server_status.status(), GRPC_STATUS_OK);
120 EXPECT_EQ(server_status.message(), "xyz");
121 EXPECT_EQ(s.method(), "/service/method");
122 EXPECT_FALSE(client_close.was_cancelled());
123 }
124
125 } // namespace
126 } // namespace grpc_core
127