| /* |
| * 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.brooklyn.api.location; |
| |
| /** |
| * A range of ports (indicator for Location and other APIs). |
| * Using methods {@code PortRanges.fromXxx(...)} this is adaptable from a number, a string, or a collection of numbers or a strings. |
| * String may be of the form: |
| * <li> "80": just 80 |
| * <li> "8080-8090": limited range sequentially; ie try 8080, then 8081, ..., then 8090, then give up |
| * <li> "8080-8000": as above, but descending; ie try 8080, then 8079, ..., then 8000, then give up |
| * <li> "8000+": unlimited range sequentially; ie try 8000, then 8001, then 8002, etc |
| * <li> "80,8080,8000,8080-8099": different ranges, in order; ie try 80, then 8080, then 8000, then 8080 (again), then 8081, ..., then 8099, then give up |
| * Ranges (but not lists) may be preceeded by "!" to indicate a randomly selected port: |
| * |
| * @see brooklyn.location.basic.PortRanges |
| */ |
| //MAYDO could have: <li> "~32168-65535" (or "~32168-"): try randomly selected numbers in range 32168-65535 (MAX_PORT) until all have been tried |
| public interface PortRange extends Iterable<Integer> { |
| /** |
| * Whether there are any ports in the range. |
| */ |
| boolean isEmpty(); |
| |
| /** |
| * Note: this method is only here for use with "groovy truth". Users are strongly discouraged |
| * from calling it directly. |
| * |
| * @return {@code !isEmpty()}; i.e. true if there is at least one port in the range; false otherwise |
| */ |
| boolean asBoolean(); |
| } |