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// Copyright 2018 Yahoo Holdings. 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.*;
import org.junit.Test;
import java.util.function.Function;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
public class ClusterStateBundleTest {
private static ClusterState stateOf(String state) {
return ClusterState.stateFromString(state);
}
private static AnnotatedClusterState annotatedStateOf(String state) {
return AnnotatedClusterState.withoutAnnotations(stateOf(state));
}
private static ClusterStateBundle.Builder createTestBundleBuilder(boolean modifyDefaultSpace) {
return ClusterStateBundle
.builder(annotatedStateOf("distributor:2 storage:2"))
.bucketSpaces("default", "global", "narnia")
.stateDeriver((state, space) -> {
AnnotatedClusterState derived = state.clone();
if (space.equals("default") && modifyDefaultSpace) {
derived.getClusterState()
.setNodeState(Node.ofStorage(0), new NodeState(NodeType.STORAGE, State.DOWN));
} else if (space.equals("narnia")) {
derived.getClusterState()
.setNodeState(Node.ofDistributor(0), new NodeState(NodeType.DISTRIBUTOR, State.DOWN));
}
return derived;
});
}
private static ClusterStateBundle createTestBundle(boolean modifyDefaultSpace) {
return createTestBundleBuilder(modifyDefaultSpace).deriveAndBuild();
}
private static ClusterStateBundle createTestBundle() {
return createTestBundle(true);
}
@Test
public void builder_creates_baseline_state_and_derived_state_per_space() {
ClusterStateBundle bundle = createTestBundle();
assertThat(bundle.getBaselineClusterState(), equalTo(stateOf("distributor:2 storage:2")));
assertThat(bundle.getDerivedBucketSpaceStates().size(), equalTo(3));
assertThat(bundle.getDerivedBucketSpaceStates().get("default"), equalTo(annotatedStateOf("distributor:2 storage:2 .0.s:d")));
assertThat(bundle.getDerivedBucketSpaceStates().get("global"), equalTo(annotatedStateOf("distributor:2 storage:2")));
assertThat(bundle.getDerivedBucketSpaceStates().get("narnia"), equalTo(annotatedStateOf("distributor:2 .0.s:d storage:2")));
}
@Test
public void version_clone_sets_version_for_all_spaces() {
ClusterStateBundle bundle = createTestBundle().clonedWithVersionSet(123);
assertThat(bundle.getBaselineClusterState(), equalTo(stateOf("version:123 distributor:2 storage:2")));
assertThat(bundle.getDerivedBucketSpaceStates().size(), equalTo(3));
assertThat(bundle.getDerivedBucketSpaceStates().get("default"), equalTo(annotatedStateOf("version:123 distributor:2 storage:2 .0.s:d")));
assertThat(bundle.getDerivedBucketSpaceStates().get("global"), equalTo(annotatedStateOf("version:123 distributor:2 storage:2")));
assertThat(bundle.getDerivedBucketSpaceStates().get("narnia"), equalTo(annotatedStateOf("version:123 distributor:2 .0.s:d storage:2")));
}
@Test
public void same_bundle_instance_considered_similar() {
ClusterStateBundle bundle = createTestBundle();
assertTrue(bundle.similarTo(bundle));
}
@Test
public void similarity_test_considers_all_bucket_spaces() {
ClusterStateBundle bundle = createTestBundle(false);
ClusterStateBundle unchangedBundle = createTestBundle(false);
assertTrue(bundle.similarTo(unchangedBundle));
assertTrue(unchangedBundle.similarTo(bundle));
ClusterStateBundle changedBundle = createTestBundle(true);
assertFalse(bundle.similarTo(changedBundle));
assertFalse(changedBundle.similarTo(bundle));
}
@Test
public void toString_without_bucket_space_states_prints_only_baseline_state() {
ClusterStateBundle bundle = ClusterStateBundle.ofBaselineOnly(
annotatedStateOf("distributor:2 storage:2"));
assertThat(bundle.toString(), equalTo("ClusterStateBundle('distributor:2 storage:2' (deferred activation))"));
}
@Test
public void toString_includes_all_bucket_space_states() {
ClusterStateBundle bundle = createTestBundle();
assertThat(bundle.toString(), equalTo("ClusterStateBundle('distributor:2 storage:2', " +
"default 'distributor:2 storage:2 .0.s:d', " +
"global 'distributor:2 storage:2', " +
"narnia 'distributor:2 .0.s:d storage:2' (deferred activation))"));
}
@Test
public void toString_without_derived_states_specifies_deferred_activation_iff_set() {
var bundle = ClusterStateBundle.ofBaselineOnly(annotatedStateOf("distributor:2 storage:2"), true);
assertThat(bundle.toString(), equalTo("ClusterStateBundle('distributor:2 storage:2' (deferred activation))"));
}
@Test
public void toString_without_derived_states_does_not_specify_deferred_activation_iff_not_set() {
var bundle = ClusterStateBundle.ofBaselineOnly(annotatedStateOf("distributor:2 storage:2"), false);
assertThat(bundle.toString(), equalTo("ClusterStateBundle('distributor:2 storage:2')"));
}
@Test
public void toString_with_derived_states_specifies_deferred_activation_iff_set() {
var bundle = createTestBundleBuilder(true).deferredActivation(true).deriveAndBuild();
assertThat(bundle.toString(), equalTo("ClusterStateBundle('distributor:2 storage:2', " +
"default 'distributor:2 storage:2 .0.s:d', " +
"global 'distributor:2 storage:2', " +
"narnia 'distributor:2 .0.s:d storage:2' (deferred activation))"));
}
@Test
public void toString_with_derived_states_does_not_specify_deferred_activation_iff_not_set() {
var bundle = createTestBundleBuilder(true).deferredActivation(false).deriveAndBuild();
assertThat(bundle.toString(), equalTo("ClusterStateBundle('distributor:2 storage:2', " +
"default 'distributor:2 storage:2 .0.s:d', " +
"global 'distributor:2 storage:2', " +
"narnia 'distributor:2 .0.s:d storage:2')"));
}
@Test
public void deferred_activation_is_enabled_by_default() {
ClusterStateBundle bundle = createTestBundle();
assertTrue(bundle.deferredActivation());
}
@Test
public void can_build_bundle_with_deferred_activation_enabled() {
var bundle = createTestBundleBuilder(false).deferredActivation(true).deriveAndBuild();
assertTrue(bundle.deferredActivation());
}
@Test
public void can_build_bundle_with_deferred_activation_disabled() {
var bundle = createTestBundleBuilder(false).deferredActivation(false).deriveAndBuild();
assertFalse(bundle.deferredActivation());
}
@Test
public void simple_bundle_without_derived_states_propagates_deferred_activation_flag() {
var bundle = ClusterStateBundle
.builder(annotatedStateOf("distributor:2 storage:2"))
.deferredActivation(false) // defaults to true
.deriveAndBuild();
assertFalse(bundle.deferredActivation());
}
@Test
public void cloning_preserves_false_deferred_activation_flag() {
var bundle = createTestBundleBuilder(true).deferredActivation(false).deriveAndBuild();
var derived = bundle.cloneWithMapper(Function.identity());
assertEquals(bundle, derived);
}
@Test
public void cloning_preserves_true_deferred_activation_flag() {
var bundle = createTestBundleBuilder(true).deferredActivation(true).deriveAndBuild();
var derived = bundle.cloneWithMapper(Function.identity());
assertEquals(bundle, derived);
}
}
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