server/manager/src/test/java/org/apache/accumulo/manager/tableOps/ShutdownTServerTest.java

/*
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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
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package org.apache.accumulo.manager.tableOps;

import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;

import java.util.Collections;
import java.util.HashMap;

import org.apache.accumulo.core.master.thrift.TableInfo;
import org.apache.accumulo.core.master.thrift.TabletServerStatus;
import org.apache.accumulo.core.metadata.TServerInstance;
import org.apache.accumulo.core.util.HostAndPort;
import org.apache.accumulo.fate.Repo;
import org.apache.accumulo.manager.Manager;
import org.apache.accumulo.manager.tserverOps.ShutdownTServer;
import org.apache.accumulo.server.manager.LiveTServerSet.TServerConnection;
import org.easymock.EasyMock;
import org.junit.Test;

public class ShutdownTServerTest {

  @Test
  public void testSingleShutdown() throws Exception {
    HostAndPort hap = HostAndPort.fromParts("localhost", 1234);
    final TServerInstance tserver = new TServerInstance(hap, "fake");
    final boolean force = false;

    final ShutdownTServer op = new ShutdownTServer(tserver, force);

    final Manager manager = EasyMock.createMock(Manager.class);
    final long tid = 1L;

    final TServerConnection tserverCnxn = EasyMock.createMock(TServerConnection.class);
    final TabletServerStatus status = new TabletServerStatus();
    status.tableMap = new HashMap<>();
    // Put in a table info record, don't care what
    status.tableMap.put("a_table", new TableInfo());

    manager.shutdownTServer(tserver);
    EasyMock.expectLastCall().once();
    EasyMock.expect(manager.onlineTabletServers()).andReturn(Collections.singleton(tserver));
    EasyMock.expect(manager.getConnection(tserver)).andReturn(tserverCnxn);
    EasyMock.expect(tserverCnxn.getTableMap(false)).andReturn(status);

    EasyMock.replay(tserverCnxn, manager);

    // FATE op is not ready
    long wait = op.isReady(tid, manager);
    assertTrue("Expected wait to be greater than 0", wait > 0);

    EasyMock.verify(tserverCnxn, manager);

    // Reset the mocks
    EasyMock.reset(tserverCnxn, manager);

    // reset the table map to the empty set to simulate all tablets unloaded
    status.tableMap = new HashMap<>();
    manager.shutdownTServer(tserver);
    EasyMock.expectLastCall().once();
    EasyMock.expect(manager.onlineTabletServers()).andReturn(Collections.singleton(tserver));
    EasyMock.expect(manager.getConnection(tserver)).andReturn(tserverCnxn);
    EasyMock.expect(tserverCnxn.getTableMap(false)).andReturn(status);
    EasyMock.expect(manager.getManagerLock()).andReturn(null);
    tserverCnxn.halt(null);
    EasyMock.expectLastCall().once();

    EasyMock.replay(tserverCnxn, manager);

    // FATE op is not ready
    wait = op.isReady(tid, manager);
    assertTrue("Expected wait to be 0", wait == 0);

    Repo<Manager> op2 = op.call(tid, manager);
    assertNull("Expected no follow on step", op2);

    EasyMock.verify(tserverCnxn, manager);
  }

}