| /* |
| * 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.processors.segmentation; |
| |
| import org.apache.ignite.internal.processors.GridProcessor; |
| |
| /** |
| * Kernal processor responsible for checking network segmentation issues. |
| * <p> |
| * Segment checks are performed by segmentation resolvers |
| * Each segmentation resolver checks segment for validity, using its inner logic. |
| * Typically, resolver should run light-weight single check (i.e. one IP address or |
| * one shared folder). Compound segment checks may be performed using several |
| * resolvers. |
| * @see org.apache.ignite.configuration.IgniteConfiguration#getSegmentationResolvers() |
| * @see org.apache.ignite.configuration.IgniteConfiguration#getSegmentationPolicy() |
| * @see org.apache.ignite.configuration.IgniteConfiguration#getSegmentCheckFrequency() |
| * @see org.apache.ignite.configuration.IgniteConfiguration#isAllSegmentationResolversPassRequired() |
| * @see org.apache.ignite.configuration.IgniteConfiguration#isWaitForSegmentOnStart() |
| */ |
| public interface GridSegmentationProcessor extends GridProcessor { |
| /** |
| * Performs network segment check. |
| * <p> |
| * This method is called by discovery manager in the following cases: |
| * <ol> |
| * <li>Before discovery SPI start.</li> |
| * <li>When other node leaves topology.</li> |
| * <li>When other node in topology fails.</li> |
| * <li>Periodically (see {@link org.apache.ignite.configuration.IgniteConfiguration#getSegmentCheckFrequency()}).</li> |
| * </ol> |
| * |
| * @return {@code True} if segment is correct. |
| */ |
| public boolean isValidSegment(); |
| } |