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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.clustercontroller.core;
import com.yahoo.vdslib.state.Node;
import com.yahoo.vdslib.state.NodeType;
import com.yahoo.vdslib.state.State;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.*;
public class NodeInfoTest {
@Test
void unstable_init_flag_is_initially_clear() {
ClusterFixture fixture = ClusterFixture.forFlatCluster(3);
final NodeInfo nodeInfo = fixture.cluster.getNodeInfo(new Node(NodeType.STORAGE, 1));
assertFalse(nodeInfo.recentlyObservedUnstableDuringInit());
}
private static ClusterFixture fixtureWithNodeMarkedAsUnstableInit(int nodeIndex) {
return ClusterFixture.forFlatCluster(3)
.reportStorageNodeState(nodeIndex, State.INITIALIZING)
.reportStorageNodeState(nodeIndex, State.DOWN);
}
@Test
void down_edge_during_init_state_marks_as_unstable_init() {
ClusterFixture fixture = fixtureWithNodeMarkedAsUnstableInit(1);
final NodeInfo nodeInfo = fixture.cluster.getNodeInfo(new Node(NodeType.STORAGE, 1));
assertTrue(nodeInfo.recentlyObservedUnstableDuringInit());
}
@Test
void stopping_edge_during_init_does_not_mark_as_unstable_init() {
ClusterFixture fixture = ClusterFixture.forFlatCluster(3).reportStorageNodeState(0, State.INITIALIZING);
fixture.reportStorageNodeState(0, State.STOPPING);
final NodeInfo nodeInfo = fixture.cluster.getNodeInfo(new Node(NodeType.STORAGE, 0));
assertFalse(nodeInfo.recentlyObservedUnstableDuringInit());
}
/**
* The cluster controller will, after a time of observed stable state, reset the crash
* counter for a given node. This should also reset the unstable init flag to keep it
* from haunting a now stable node.
*/
@Test
void zeroing_crash_count_resets_unstable_init_flag() {
ClusterFixture fixture = fixtureWithNodeMarkedAsUnstableInit(1);
final NodeInfo nodeInfo = fixture.cluster.getNodeInfo(new Node(NodeType.STORAGE, 1));
nodeInfo.setPrematureCrashCount(0);
assertFalse(nodeInfo.recentlyObservedUnstableDuringInit());
}
/**
* A non-zero crash count update, on the other hand, implies the node is suffering
* further instabilities and should not clear the unstable init flag.
*/
@Test
void non_zero_crash_count_update_does_not_reset_unstable_init_flag() {
ClusterFixture fixture = fixtureWithNodeMarkedAsUnstableInit(1);
final NodeInfo nodeInfo = fixture.cluster.getNodeInfo(new Node(NodeType.STORAGE, 1));
nodeInfo.setPrematureCrashCount(3);
assertTrue(nodeInfo.recentlyObservedUnstableDuringInit());
}
@Test
void non_zero_crash_count_does_not_implicitly_set_unstable_init_flag() {
ClusterFixture fixture = ClusterFixture.forFlatCluster(3);
final NodeInfo nodeInfo = fixture.cluster.getNodeInfo(new Node(NodeType.STORAGE, 1));
nodeInfo.setPrematureCrashCount(1);
assertFalse(nodeInfo.recentlyObservedUnstableDuringInit());
}
@Test
void down_wanted_state_overrides_config_retired_state() {
ClusterFixture fixture = ClusterFixture.forFlatCluster(3)
.markNodeAsConfigRetired(1)
.proposeStorageNodeWantedState(1, State.DOWN);
NodeInfo nodeInfo = fixture.cluster.getNodeInfo(new Node(NodeType.STORAGE, 1));
assertEquals(State.DOWN, nodeInfo.getWantedState().getState());
}
@Test
void maintenance_wanted_state_overrides_config_retired_state() {
ClusterFixture fixture = ClusterFixture.forFlatCluster(3)
.markNodeAsConfigRetired(1)
.proposeStorageNodeWantedState(1, State.MAINTENANCE);
NodeInfo nodeInfo = fixture.cluster.getNodeInfo(new Node(NodeType.STORAGE, 1));
assertEquals(State.MAINTENANCE, nodeInfo.getWantedState().getState());
}
@Test
void retired_state_overrides_default_up_wanted_state() {
final ClusterFixture fixture = ClusterFixture.forFlatCluster(3).markNodeAsConfigRetired(1);
NodeInfo nodeInfo = fixture.cluster.getNodeInfo(new Node(NodeType.STORAGE, 1));
assertEquals(State.RETIRED, nodeInfo.getWantedState().getState());
}
}
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