| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| #include <gtest/gtest.h> |
| #include <vector> |
| |
| #include "kudu/rpc/request_tracker.h" |
| #include "kudu/util/test_util.h" |
| |
| using std::vector; |
| |
| namespace kudu { |
| namespace rpc { |
| |
| TEST(RequestTrackerTest, TestSequenceNumberGeneration) { |
| const int MAX = 10; |
| |
| scoped_refptr<RequestTracker> tracker_(new RequestTracker("test_client")); |
| |
| // A new tracker should have no incomplete RPCs |
| RequestTracker::SequenceNumber seq_no = tracker_->FirstIncomplete(); |
| ASSERT_EQ(seq_no, RequestTracker::NO_SEQ_NO); |
| |
| vector<RequestTracker::SequenceNumber> generated_seq_nos; |
| |
| // Generate MAX in flight RPCs, making sure they are correctly returned. |
| for (int i = 0; i < MAX; i++) { |
| ASSERT_OK(tracker_->NewSeqNo(&seq_no)); |
| generated_seq_nos.push_back(seq_no); |
| } |
| |
| // Now we should get a first incomplete. |
| ASSERT_EQ(generated_seq_nos[0], tracker_->FirstIncomplete()); |
| |
| // Marking 'first_incomplete' as done, should advance the first incomplete. |
| tracker_->RpcCompleted(tracker_->FirstIncomplete()); |
| |
| ASSERT_EQ(generated_seq_nos[1], tracker_->FirstIncomplete()); |
| |
| // Marking a 'middle' rpc, should not advance 'first_incomplete'. |
| tracker_->RpcCompleted(generated_seq_nos[5]); |
| ASSERT_EQ(generated_seq_nos[1], tracker_->FirstIncomplete()); |
| |
| // Marking half the rpc as complete should advance FirstIncomplete. |
| // Note that this also tests that RequestTracker::RpcCompleted() is idempotent, i.e. that |
| // marking the same sequence number as complete twice is a no-op. |
| for (int i = 0; i < MAX / 2; i++) { |
| tracker_->RpcCompleted(generated_seq_nos[i]); |
| } |
| |
| ASSERT_EQ(generated_seq_nos[6], tracker_->FirstIncomplete()); |
| |
| for (int i = MAX / 2; i <= MAX; i++) { |
| ASSERT_OK(tracker_->NewSeqNo(&seq_no)); |
| generated_seq_nos.push_back(seq_no); |
| } |
| |
| // Marking them all as completed should cause RequestTracker::FirstIncomplete() to return |
| // Status::NotFound() again. |
| for (auto seq_no : generated_seq_nos) { |
| tracker_->RpcCompleted(seq_no); |
| } |
| |
| ASSERT_EQ(tracker_->FirstIncomplete(), RequestTracker::NO_SEQ_NO); |
| } |
| |
| } // namespace rpc |
| } // namespace kudu |
| |