| /** |
| * 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.hadoop.hdds.scm.net; |
| |
| import org.apache.hadoop.hdds.scm.net.NodeSchema.LayerType; |
| |
| /** |
| * Class to hold network topology related constants and configurations. |
| */ |
| public final class NetConstants { |
| private NetConstants() { |
| // Prevent instantiation |
| } |
| public final static char PATH_SEPARATOR = '/'; |
| /** Path separator as a string. */ |
| public final static String PATH_SEPARATOR_STR = "/"; |
| public final static String SCOPE_REVERSE_STR = "~"; |
| /** string representation of root. */ |
| public final static String ROOT = ""; |
| public final static int INNER_NODE_COST_DEFAULT = 1; |
| public final static int NODE_COST_DEFAULT = 0; |
| public final static int ANCESTOR_GENERATION_DEFAULT = 0; |
| public final static int ROOT_LEVEL = 1; |
| public final static String NODE_COST_PREFIX = "$"; |
| public final static String DEFAULT_RACK = "/default-rack"; |
| public final static String DEFAULT_NODEGROUP = "/default-nodegroup"; |
| public final static String DEFAULT_DATACENTER = "/default-datacenter"; |
| public final static String DEFAULT_REGION = "/default-dataregion"; |
| |
| // Build-in network topology node schema |
| public static final NodeSchema ROOT_SCHEMA = |
| new NodeSchema.Builder().setType(LayerType.ROOT).build(); |
| |
| public static final NodeSchema REGION_SCHEMA = |
| new NodeSchema.Builder().setType(LayerType.INNER_NODE) |
| .setDefaultName(DEFAULT_REGION).build(); |
| |
| public static final NodeSchema DATACENTER_SCHEMA = |
| new NodeSchema.Builder().setType(LayerType.INNER_NODE) |
| .setDefaultName(DEFAULT_DATACENTER).build(); |
| |
| public static final NodeSchema RACK_SCHEMA = |
| new NodeSchema.Builder().setType(LayerType.INNER_NODE) |
| .setDefaultName(DEFAULT_RACK).build(); |
| |
| public static final NodeSchema NODEGROUP_SCHEMA = |
| new NodeSchema.Builder().setType(LayerType.INNER_NODE) |
| .setDefaultName(DEFAULT_NODEGROUP).build(); |
| |
| public static final NodeSchema LEAF_SCHEMA = |
| new NodeSchema.Builder().setType(LayerType.LEAF_NODE).build(); |
| } |