anton-vinogradov commented on a change in pull request #8130: URL: https://github.com/apache/ignite/pull/8130#discussion_r467916416
########## File path: modules/ducktests/src/main/java/org/apache/ignite/internal/ducktest/tests/cellular_affinity_test/CellularAffinityBackupFilter.java ########## @@ -0,0 +1,59 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.ignite.internal.ducktest.tests.cellular_affinity_test; + +import java.util.List; +import java.util.Objects; +import org.apache.ignite.cluster.ClusterNode; +import org.apache.ignite.lang.IgniteBiPredicate; + +/** + * + */ +public class CellularAffinityBackupFilter implements IgniteBiPredicate<ClusterNode, List<ClusterNode>> { + /** */ + private static final long serialVersionUID = 1L; + + /** Attribute name. */ + private final String attrName; + + /** + * @param attrName The attribute name for the attribute to compare. + */ + public CellularAffinityBackupFilter(String attrName) { + this.attrName = attrName; + } + + /** + * Defines a predicate which returns {@code true} if a node is acceptable for a backup + * or {@code false} otherwise. An acceptable node is one where its attribute value + * is exact match with previously selected nodes. If an attribute does not + * exist on exactly one node of a pair, then the attribute does not match. If the attribute + * does not exist both nodes of a pair, then the attribute matches. + * + * @param candidate A node that is a candidate for becoming a backup node for a partition. + * @param previouslySelected A list of primary/backup nodes already chosen for a partition. + * The primary is first. + */ + @Override public boolean apply(ClusterNode candidate, List<ClusterNode> previouslySelected) { + for (ClusterNode node : previouslySelected) + return Objects.equals(candidate.attribute(attrName), node.attribute(attrName)); + + return true; + } +} Review comment: Done ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
