116 lines
3.4 KiB
C++
116 lines
3.4 KiB
C++
//
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//
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// Copyright 2017 gRPC authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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//
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#include "absl/types/optional.h"
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#include "gtest/gtest.h"
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#include <grpc/grpc.h>
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#include <grpc/status.h>
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#include "src/core/lib/channel/channel_args.h"
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#include "src/core/lib/gprpp/time.h"
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#include "test/core/end2end/end2end_tests.h"
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namespace grpc_core {
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// Tests a basic retry scenario:
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// - 2 retries allowed for ABORTED status
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// - first attempt returns ABORTED
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// - second attempt returns OK
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CORE_END2END_TEST(RetryTest, Retry) {
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InitServer(ChannelArgs());
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InitClient(ChannelArgs().Set(
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GRPC_ARG_SERVICE_CONFIG,
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"{\n"
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" \"methodConfig\": [ {\n"
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" \"name\": [\n"
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" { \"service\": \"service\", \"method\": \"method\" }\n"
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" ],\n"
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" \"retryPolicy\": {\n"
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" \"maxAttempts\": 3,\n"
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" \"initialBackoff\": \"1s\",\n"
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" \"maxBackoff\": \"120s\",\n"
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" \"backoffMultiplier\": 1.6,\n"
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" \"retryableStatusCodes\": [ \"ABORTED\" ]\n"
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" }\n"
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" } ]\n"
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"}"));
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auto c =
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NewClientCall("/service/method").Timeout(Duration::Seconds(5)).Create();
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EXPECT_NE(c.GetPeer(), absl::nullopt);
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IncomingStatusOnClient server_status;
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IncomingMetadata server_initial_metadata;
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IncomingMessage server_message;
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c.NewBatch(1)
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.SendInitialMetadata({})
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.SendMessage("foo")
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.RecvMessage(server_message)
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.SendCloseFromClient()
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.RecvInitialMetadata(server_initial_metadata)
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.RecvStatusOnClient(server_status);
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auto s = RequestCall(101);
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Expect(101, true);
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Step();
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// Make sure the "grpc-previous-rpc-attempts" header was not sent in the
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// initial attempt.
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EXPECT_EQ(s.GetInitialMetadata("grpc-previous-rpc-attempts"), absl::nullopt);
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EXPECT_NE(s.GetPeer(), absl::nullopt);
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EXPECT_NE(c.GetPeer(), absl::nullopt);
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IncomingCloseOnServer client_close;
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s.NewBatch(102)
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.SendInitialMetadata({})
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.SendStatusFromServer(GRPC_STATUS_ABORTED, "xyz", {})
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.RecvCloseOnServer(client_close);
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Expect(102, true);
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Step();
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auto s2 = RequestCall(201);
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Expect(201, true);
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Step();
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// Make sure the "grpc-previous-rpc-attempts" header was sent in the retry.
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EXPECT_EQ(s2.GetInitialMetadata("grpc-previous-rpc-attempts"), "1");
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EXPECT_NE(s2.GetPeer(), absl::nullopt);
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EXPECT_NE(c.GetPeer(), absl::nullopt);
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IncomingMessage server_message2;
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s2.NewBatch(202)
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.SendInitialMetadata({})
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.RecvMessage(server_message2)
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.SendMessage("bar");
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IncomingCloseOnServer client_close2;
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s2.NewBatch(203)
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.SendStatusFromServer(GRPC_STATUS_OK, "xyz", {})
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.RecvCloseOnServer(client_close2);
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Expect(202, true);
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Expect(203, true);
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Expect(1, true);
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Step();
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EXPECT_EQ(server_status.status(), GRPC_STATUS_OK);
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EXPECT_EQ(server_status.message(), "xyz");
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EXPECT_EQ(s.method(), "/service/method");
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EXPECT_FALSE(client_close2.was_cancelled());
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}
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} // namespace grpc_core
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