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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.routing;
import com.yahoo.cloud.config.LbServicesConfig;
import com.yahoo.config.ConfigInstance;
import com.yahoo.config.subscription.ConfigSet;
import com.yahoo.test.ManualClock;
import com.yahoo.vespa.config.ConfigKey;
import org.junit.Test;
import java.util.concurrent.atomic.AtomicBoolean;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
/**
* @author mpolden
*/
public class RoutingGeneratorTest {
@Test(timeout = 2000)
public void config_subscription() {
RouterMock router = new RouterMock();
RoutingGenerator generator = new RoutingGenerator(new ConfigSetMock(), router, new ManualClock());
try {
router.awaitLoad(generator);
assertNotNull("Router loads table", router.currentTable);
assertEquals("Routing generator and router has same table",
generator.routingTable().get(),
router.currentTable);
} finally {
generator.deconstruct();
}
}
private static class RouterMock implements Router {
private volatile RoutingTable currentTable = null;
@Override
public void load(RoutingTable table) {
currentTable = table;
}
public void awaitLoad(RoutingGenerator generator) {
AtomicBoolean completed = new AtomicBoolean(false);
while (!completed.get()) {
generator.routingTable().ifPresent(table -> completed.set(table == currentTable));
if (!completed.get()) {
try {
Thread.sleep(1);
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
}
}
}
private static class ConfigSetMock extends ConfigSet {
private int attempt = 0;
public ConfigSetMock() {
addBuilder("*", new LbServicesConfig.Builder());
}
@Override
public ConfigInstance.Builder get(ConfigKey<?> key) {
if (++attempt <= 5) {
throw new RuntimeException("Failed to get config on attempt " + attempt);
}
return super.get(key);
}
}
}
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