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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.clustercontroller.core;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;
public class GlobalBucketSyncStatsCalculatorTest {
private static ContentNodeStatsBuilder globalStatsBuilder() {
return ContentNodeStatsBuilder.forNode(-1);
}
private static void assertComputedRatio(double expected, ContentNodeStatsBuilder statsBuilder) {
var maybeRatio = GlobalBucketSyncStatsCalculator.clusterBucketsOutOfSyncRatio(statsBuilder.build());
if (maybeRatio.isEmpty()) {
throw new IllegalArgumentException("Expected calculation to yield a value, but was empty");
}
assertEquals(expected, maybeRatio.get(), 0.00001);
}
private static void assertEmptyComputedRatio(ContentNodeStatsBuilder statsBuilder) {
var maybeRatio = GlobalBucketSyncStatsCalculator.clusterBucketsOutOfSyncRatio(statsBuilder.build());
assertTrue(maybeRatio.isEmpty());
}
@Test
void no_buckets_imply_fully_in_sync() {
// Can't have anything out of sync if you don't have anything to be out of sync with *taps side of head*
assertComputedRatio(0.0, globalStatsBuilder().add("default", 0, 0));
}
@Test
void no_pending_buckets_implies_fully_in_sync() {
assertComputedRatio(0.0, globalStatsBuilder().add("default", 100, 0));
assertComputedRatio(0.0, globalStatsBuilder().add("default", 100, 0).add("global", 50, 0));
}
@Test
void invalid_stats_returns_empty() {
assertEmptyComputedRatio(globalStatsBuilder().add("default", ContentNodeStats.BucketSpaceStats.invalid()));
assertEmptyComputedRatio(globalStatsBuilder()
.add("default", 100, 0)
.add("global", ContentNodeStats.BucketSpaceStats.invalid()));
}
@Test
void pending_buckets_return_expected_ratio() {
assertComputedRatio(0.50, globalStatsBuilder().add("default", 10, 5));
assertComputedRatio(0.80, globalStatsBuilder().add("default", 10, 8));
assertComputedRatio(0.10, globalStatsBuilder().add("default", 100, 10));
assertComputedRatio(0.01, globalStatsBuilder().add("default", 100, 1));
assertComputedRatio(0.05, globalStatsBuilder().add("default", 50, 5).add("global", 50, 0));
assertComputedRatio(0.05, globalStatsBuilder().add("default", 50, 0).add("global", 50, 5));
assertComputedRatio(0.10, globalStatsBuilder().add("default", 50, 5).add("global", 50, 5));
}
}
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