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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.container.handler;
import static org.junit.Assert.*;
import com.yahoo.container.QrSearchersConfig;
import com.yahoo.container.core.VipStatusConfig;
import com.yahoo.container.jdisc.state.StateMonitor;
import com.yahoo.jdisc.core.SystemTimer;
import org.junit.Test;
/**
* Smoke test that VipStatus has the right basic logic.
*
* @author steinar
*/
public class VipStatusTestCase {
private static QrSearchersConfig getSearchersConfig(String[] clusters) {
var b = new QrSearchersConfig.Builder();
if (clusters.length > 0) {
var searchClusterB = new QrSearchersConfig.Searchcluster.Builder();
for (String cluster : clusters) {
searchClusterB.name(cluster);
}
b.searchcluster(searchClusterB);
}
return b.build();
}
private static VipStatus getVipStatus(String[] clusters, StateMonitor.Status startState, boolean initiallyInRotation) {
return new VipStatus(getSearchersConfig(clusters),
new VipStatusConfig.Builder().initiallyInRotation(initiallyInRotation).build(),
new ClustersStatus(),
new StateMonitor(1000, startState, new SystemTimer(), runnable -> {
Thread thread = new Thread(runnable, "StateMonitor");
thread.setDaemon(true);
return thread;
}));
}
private static void remove(String[] clusters, VipStatus v) {
for (String s : clusters) {
v.removeFromRotation(s);
}
}
private static void add(String[] clusters, VipStatus v) {
for (String s : clusters) {
v.addToRotation(s);
}
}
private static void verifyUpOrDown(String[] clusters, StateMonitor.Status status) {
VipStatus v = getVipStatus(clusters, status, true);
remove(clusters, v);
// initial state
assertFalse(v.isInRotation());
v.addToRotation(clusters[0]);
assertFalse(v.isInRotation());
v.addToRotation(clusters[1]);
assertFalse(v.isInRotation());
v.addToRotation(clusters[2]);
assertTrue(v.isInRotation());
}
@Test
public void testInitializingOrDownRequireAllUp() {
String[] clusters = {"cluster1", "cluster2", "cluster3"};
verifyUpOrDown(clusters, StateMonitor.Status.initializing);
verifyUpOrDown(clusters, StateMonitor.Status.down);
}
@Test
public void testUpRequireAllDown() {
String[] clusters = {"cluster1", "cluster2", "cluster3"};
VipStatus v = getVipStatus(clusters, StateMonitor.Status.initializing, true);
assertFalse(v.isInRotation());
add(clusters, v);
assertTrue(v.isInRotation());
v.removeFromRotation(clusters[0]);
assertTrue(v.isInRotation());
v.removeFromRotation(clusters[1]);
assertTrue(v.isInRotation());
v.removeFromRotation(clusters[2]);
assertFalse(v.isInRotation()); // All down
v.addToRotation(clusters[1]);
assertFalse(v.isInRotation());
v.addToRotation(clusters[0]);
v.addToRotation(clusters[2]);
assertTrue(v.isInRotation()); // All up
v.removeFromRotation(clusters[0]);
v.removeFromRotation(clusters[2]);
assertTrue(v.isInRotation());
v.addToRotation(clusters[0]);
v.addToRotation(clusters[2]);
assertTrue(v.isInRotation());
}
@Test
public void testNoClustersConfiguringInitiallyInRotationFalse() {
String[] clusters = {};
VipStatus v = getVipStatus(clusters, StateMonitor.Status.initializing, false);
assertFalse(v.isInRotation());
}
@Test
public void testNoClustersConfiguringInitiallyInRotationTrue() {
String[] clusters = {};
VipStatus v = getVipStatus(clusters, StateMonitor.Status.initializing, true);
assertTrue(v.isInRotation());
}
}
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