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/*
* SonarQube
* Copyright (C) 2009-2025 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.application;
import com.tngtech.java.junit.dataprovider.DataProvider;
import com.tngtech.java.junit.dataprovider.DataProviderRunner;
import com.tngtech.java.junit.dataprovider.UseDataProvider;
import java.util.Arrays;
import org.junit.Test;
import org.junit.runner.RunWith;
import static org.assertj.core.api.Assertions.assertThat;
import static org.sonar.application.NodeLifecycle.State.FINALIZE_STOPPING;
import static org.sonar.application.NodeLifecycle.State.HARD_STOPPING;
import static org.sonar.application.NodeLifecycle.State.INIT;
import static org.sonar.application.NodeLifecycle.State.OPERATIONAL;
import static org.sonar.application.NodeLifecycle.State.RESTARTING;
import static org.sonar.application.NodeLifecycle.State.STARTING;
import static org.sonar.application.NodeLifecycle.State.STOPPED;
import static org.sonar.application.NodeLifecycle.State.STOPPING;
@RunWith(DataProviderRunner.class)
public class NodeLifecycleTest {
private NodeLifecycle underTest = new NodeLifecycle();
@Test
public void verify_regular_start_and_graceful_stop_cycle() {
assertThat(underTest.getState()).isEqualTo(INIT);
verifyMoveTo(STARTING);
verifyMoveTo(OPERATIONAL);
verifyMoveTo(STOPPING);
verifyMoveTo(FINALIZE_STOPPING);
verifyMoveTo(STOPPED);
}
@Test
public void verify_regular_start_and_early_graceful_stop_cycle() {
assertThat(underTest.getState()).isEqualTo(INIT);
verifyMoveTo(STARTING);
verifyMoveTo(STOPPING);
verifyMoveTo(FINALIZE_STOPPING);
verifyMoveTo(STOPPED);
}
@Test
public void verify_start_and_hard_stop_cycle() {
assertThat(underTest.getState()).isEqualTo(INIT);
verifyMoveTo(STARTING);
verifyMoveTo(OPERATIONAL);
verifyMoveTo(HARD_STOPPING);
verifyMoveTo(FINALIZE_STOPPING);
verifyMoveTo(STOPPED);
}
@Test
public void verify_start_graceful_stop_interrupted_by_hard_stop_cycle() {
assertThat(underTest.getState()).isEqualTo(INIT);
verifyMoveTo(STARTING);
verifyMoveTo(OPERATIONAL);
verifyMoveTo(STOPPING);
verifyMoveTo(HARD_STOPPING);
verifyMoveTo(FINALIZE_STOPPING);
verifyMoveTo(STOPPED);
}
@Test
public void verify_regular_start_restart_cycle() {
assertThat(underTest.getState()).isEqualTo(INIT);
verifyMoveTo(STARTING);
verifyMoveTo(OPERATIONAL);
verifyMoveTo(RESTARTING);
verifyMoveTo(STARTING);
verifyMoveTo(OPERATIONAL);
}
@Test
public void verify_failed_restart_resulting_in_hard_stop_cycle() {
assertThat(underTest.getState()).isEqualTo(INIT);
verifyMoveTo(STARTING);
verifyMoveTo(OPERATIONAL);
verifyMoveTo(RESTARTING);
verifyMoveTo(HARD_STOPPING);
verifyMoveTo(FINALIZE_STOPPING);
verifyMoveTo(STOPPED);
}
@Test
public void verify_failed_restart_even_if_FINALIZE_STOPPING_was_initiated_resulting_in_hard_stop_cycle() {
assertThat(underTest.getState()).isEqualTo(INIT);
verifyMoveTo(STARTING);
verifyMoveTo(OPERATIONAL);
verifyMoveTo(RESTARTING);
verifyMoveTo(HARD_STOPPING);
verifyMoveTo(FINALIZE_STOPPING);
verifyMoveTo(STOPPED);
}
@Test
@UseDataProvider("allStates")
public void RESTARTING_is_only_allowed_from_STARTING_and_OPERATIONAL(NodeLifecycle.State state) {
if (state == STARTING || state == OPERATIONAL) {
verifyMoveTo(newNodeLifecycle(state), RESTARTING);
} else {
assertThat(newNodeLifecycle(state).tryToMoveTo(RESTARTING)).isFalse();
}
}
/**
* Moving to stopped displays a log "SQ stopped" which must no appear when restarting
*/
@Test
public void STOPPED_is_not_allowed_from_RESTARTING() {
assertThat(newNodeLifecycle(RESTARTING).tryToMoveTo(STOPPED)).isFalse();
}
/**
* To go to STOPPED state, one must go through FINALIZE_STOPPING
*/
@Test
@UseDataProvider("allStates")
public void STOPPED_is_allowed_only_from_FINALIZE_STOPPING(NodeLifecycle.State state) {
if (state == FINALIZE_STOPPING) {
verifyMoveTo(newNodeLifecycle(state), STOPPED);
} else {
assertThat(newNodeLifecycle(state).tryToMoveTo(STOPPED)).isFalse();
}
}
@Test
@UseDataProvider("allStates")
public void FINALIZE_STOPPING_is_only_allowed_from_STOPPING_and_HARD_STOPPING(NodeLifecycle.State state) {
if (state == STOPPING || state == HARD_STOPPING) {
verifyMoveTo(newNodeLifecycle(state), FINALIZE_STOPPING);
} else {
assertThat(newNodeLifecycle(state).tryToMoveTo(FINALIZE_STOPPING)).isFalse();
}
}
@Test
@UseDataProvider("allStates")
public void cannot_move_to_any_state_from_STOPPED(NodeLifecycle.State state) {
assertThat(newNodeLifecycle(STOPPED).tryToMoveTo(state)).isFalse();
}
private void verifyMoveTo(NodeLifecycle.State newState) {
verifyMoveTo(this.underTest, newState);
}
private void verifyMoveTo(NodeLifecycle lifecycle, NodeLifecycle.State newState) {
assertThat(lifecycle.tryToMoveTo(newState)).isTrue();
assertThat(lifecycle.getState()).isEqualTo(newState);
}
/**
* Creates a Lifecycle object in the specified state emulating that the shortest path to this state has been followed
* to reach it.
*/
private static NodeLifecycle newNodeLifecycle(NodeLifecycle.State state) {
switch (state) {
case INIT:
return new NodeLifecycle();
case STARTING:
return newNodeLifecycle(INIT, state);
case OPERATIONAL:
return newNodeLifecycle(STARTING, state);
case RESTARTING:
return newNodeLifecycle(OPERATIONAL, state);
case STOPPING:
return newNodeLifecycle(OPERATIONAL, state);
case HARD_STOPPING:
return newNodeLifecycle(OPERATIONAL, state);
case FINALIZE_STOPPING:
return newNodeLifecycle(STOPPING, state);
case STOPPED:
return newNodeLifecycle(FINALIZE_STOPPING, state);
default:
throw new IllegalStateException("Missing state! " + state);
}
}
private static NodeLifecycle newNodeLifecycle(NodeLifecycle.State from, NodeLifecycle.State to) {
NodeLifecycle lifecycle = newNodeLifecycle(from);
assertThat(lifecycle.tryToMoveTo(to)).isTrue();
return lifecycle;
}
@DataProvider
public static Object[][] allStates() {
return Arrays.stream(NodeLifecycle.State.values())
.map(t -> new Object[] {t})
.toArray(Object[][]::new);
}
}
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