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 * Licensed to the Apache Software Foundation (ASF) under one
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 * 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.
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package org.apache.hadoop.hbase.replication;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;

import java.util.EnumSet;
import java.util.List;
import org.apache.hadoop.hbase.ClusterMetrics;
import org.apache.hadoop.hbase.ClusterMetrics.Option;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.client.Admin;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.testclassification.MediumTests;
import org.apache.hadoop.hbase.testclassification.ReplicationTests;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.jupiter.api.Tag;
import org.junit.jupiter.api.Test;

@Tag(ReplicationTests.TAG)
@Tag(MediumTests.TAG)
public class TestReplicationStatusBothNormalAndRecoveryLagging extends TestReplicationBase {

  @Test
  public void testReplicationStatusBothNormalAndRecoveryLagging() throws Exception {
    // stop all region servers, we need to keep the master up as the below assertions need to get
    // cluster id from remote cluster, if master is also down, we can not get any information from
    // the remote cluster after source cluster restarts
    stopAllRegionServers(UTIL2);

    // add some values to cluster 1
    for (int i = 0; i < NB_ROWS_IN_BATCH; i++) {
      Put p = new Put(Bytes.toBytes("row" + i));
      p.addColumn(famName, Bytes.toBytes("col1"), Bytes.toBytes("val" + i));
      htable1.put(p);
    }
    Thread.sleep(10000);
    restartSourceCluster(1);
    Admin hbaseAdmin = UTIL1.getAdmin();
    ServerName serverName = UTIL1.getHBaseCluster().getRegionServer(0).getServerName();
    Thread.sleep(10000);
    // add more values to cluster 1, these should cause normal queue to lag
    for (int i = 0; i < NB_ROWS_IN_BATCH; i++) {
      Put p = new Put(Bytes.toBytes("row" + i));
      p.addColumn(famName, Bytes.toBytes("col1"), Bytes.toBytes("val" + i));
      htable1.put(p);
    }
    Thread.sleep(10000);
    ClusterMetrics metrics = hbaseAdmin.getClusterMetrics(EnumSet.of(Option.LIVE_SERVERS));
    List<ReplicationLoadSource> loadSources =
      metrics.getLiveServerMetrics().get(serverName).getReplicationLoadSourceList();
    assertEquals(2, loadSources.size());
    boolean foundRecovery = false;
    boolean foundNormal = false;
    for (ReplicationLoadSource loadSource : loadSources) {
      if (loadSource.isRecovered()) {
        foundRecovery = true;
      } else {
        foundNormal = true;
      }
      assertTrue(loadSource.hasEditsSinceRestart());
      assertEquals(0, loadSource.getTimestampOfLastShippedOp());
      assertTrue(loadSource.getReplicationLag() > 0);
    }
    assertTrue(foundNormal, "No normal queue found.");
    assertTrue(foundRecovery, "No recovery queue found.");
  }
}
