YugabyteDB (2.13.0.0-b42, bfc6a6643e7399ac8a0e81d06a3ee6d6571b33ab)

// 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.

//

// The following only applies to changes made to this file as part of YugaByte development.

//

// Portions Copyright (c) YugaByte, Inc.

//

// Licensed 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 <glog/logging.h>

#include <gtest/gtest.h>

#include "yb/consensus/log_anchor_registry.h"

#include "yb/util/test_util.h"

using strings::Substitute;

namespace yb {

namespace log {

class LogAnchorRegistryTest : public YBTest {

};

TEST_F(LogAnchorRegistryTest, TestUpdateRegistration) {

  const string test_name = CURRENT_TEST_NAME();

  scoped_refptr<LogAnchorRegistry> reg(new LogAnchorRegistry());

  LogAnchor anchor;

  const int64_t kInitialIndex = 12345;

  ASSERT_FALSE(anchor.is_registered);

  ASSERT_FALSE(anchor.when_registered.Initialized());

  reg->Register(kInitialIndex, test_name, &anchor);

  ASSERT_TRUE(anchor.is_registered);

  ASSERT_TRUE(anchor.when_registered.Initialized());

  ASSERT_OK(reg->UpdateRegistration(kInitialIndex + 1, &anchor));

  ASSERT_OK(reg->Unregister(&anchor));

}

TEST_F(LogAnchorRegistryTest, TestDuplicateInserts) {

  const string test_name = CURRENT_TEST_NAME();

  scoped_refptr<LogAnchorRegistry> reg(new LogAnchorRegistry());

  // Register a bunch of anchors at log index 1.

  constexpr int kNumAnchors = 10;

  LogAnchor anchors[kNumAnchors];

  for (auto& anchor : anchors) {

    reg->Register(1, test_name, &anchor);

  }

  // We should see index 1 as the earliest registered.

  int64_t first_index = -1;

  ASSERT_OK(reg->GetEarliestRegisteredLogIndex(&first_index));

  ASSERT_EQ(1, first_index);

  // Unregister them all.

  for (auto& anchor : anchors) {

    ASSERT_OK(reg->Unregister(&anchor));

  }

  // We should see none registered.

  Status s = reg->GetEarliestRegisteredLogIndex(&first_index);

  ASSERT_TRUE(s.IsNotFound())

      << Substitute("Should have empty OpId registry. Status: $0, anchor: $1, Num anchors: $2",

                    s.ToString(), first_index, reg->GetAnchorCountForTests());

  ASSERT_EQ(0, reg->GetAnchorCountForTests());

}

// Ensure that the correct results are returned when anchors are added/removed

// out of order.

TEST_F(LogAnchorRegistryTest, TestOrderedEarliestOpId) {

  scoped_refptr<LogAnchorRegistry> reg(new LogAnchorRegistry());

  const int kNumAnchors = 4;

  const string test_name = CURRENT_TEST_NAME();

  LogAnchor anchors[kNumAnchors];

  reg->Register(2, test_name, &anchors[0]);

  reg->Register(3, test_name, &anchors[1]);

  reg->Register(1, test_name, &anchors[2]);

  reg->Register(4, test_name, &anchors[3]);

  ASSERT_STR_CONTAINS(reg->DumpAnchorInfo(), "LogAnchor[index=1");

  int64_t anchor_idx = -1;

  ASSERT_OK(reg->GetEarliestRegisteredLogIndex(&anchor_idx));

  ASSERT_EQ(1, anchor_idx);

  ASSERT_OK(reg->Unregister(&anchors[2]));

  ASSERT_OK(reg->GetEarliestRegisteredLogIndex(&anchor_idx));

  ASSERT_EQ(2, anchor_idx);

  ASSERT_OK(reg->Unregister(&anchors[3]));

  ASSERT_OK(reg->GetEarliestRegisteredLogIndex(&anchor_idx));

  ASSERT_EQ(2, anchor_idx);

  ASSERT_OK(reg->Unregister(&anchors[0]));

  ASSERT_OK(reg->GetEarliestRegisteredLogIndex(&anchor_idx));

  ASSERT_EQ(3, anchor_idx);

  ASSERT_OK(reg->Unregister(&anchors[1]));

  Status s = reg->GetEarliestRegisteredLogIndex(&anchor_idx);

  ASSERT_TRUE(s.IsNotFound()) << s.ToString();

}

} // namespace log

} // namespace yb