slowr | db071b2 | 2017-07-07 11:10:25 -0700 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2016-present Open Networking Foundation |
slowr | db071b2 | 2017-07-07 11:10:25 -0700 | [diff] [blame] | 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.artemis.impl; |
| 17 | |
| 18 | import com.google.common.collect.Maps; |
| 19 | import com.google.common.collect.Sets; |
| 20 | import org.onlab.packet.IpPrefix; |
| 21 | import org.onosproject.artemis.impl.monitors.ExaBgpMonitor; |
| 22 | import org.onosproject.artemis.impl.monitors.Monitor; |
| 23 | import org.onosproject.artemis.impl.monitors.RipeMonitor; |
| 24 | |
| 25 | import java.util.Map; |
| 26 | import java.util.Objects; |
| 27 | import java.util.Set; |
| 28 | |
| 29 | /** |
| 30 | * Handler of monitoring step for each different prefix. |
| 31 | * This class contains all the running monitors of the specified prefix. |
| 32 | */ |
| 33 | class PrefixHandler { |
| 34 | |
| 35 | private IpPrefix prefix; |
| 36 | private Set<Monitor> prefixMonitors = Sets.newHashSet(); |
| 37 | |
| 38 | /** |
| 39 | * Constructor that takes a CIDR-notation string and a list of monitors. |
| 40 | * |
| 41 | * @param prefix A CIDR-notation string, e.g. "192.168.0.1/24" |
| 42 | * @param monitors A map of strings to a set of string for monitors, e.g. "ripe", ["host1","host2",..] |
| 43 | */ |
| 44 | PrefixHandler(IpPrefix prefix, Map<String, Set<String>> monitors) { |
| 45 | this.prefix = prefix; |
| 46 | |
| 47 | monitors.forEach((type, values) -> { |
| 48 | if (type.equals(Monitor.Types.RIPE.toString())) { |
| 49 | values.forEach(host -> prefixMonitors.add(new RipeMonitor(prefix, host))); |
| 50 | } else if (type.equals(Monitor.Types.EXABGP.toString())) { |
| 51 | values.forEach(host -> prefixMonitors.add(new ExaBgpMonitor(prefix, host))); |
| 52 | } |
| 53 | }); |
| 54 | } |
| 55 | |
| 56 | /** |
| 57 | * Start all monitors for this prefix. |
| 58 | */ |
| 59 | void startPrefixMonitors() { |
| 60 | prefixMonitors.forEach(Monitor::startMonitor); |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Stop all monitors for this prefix. |
| 65 | */ |
| 66 | void stopPrefixMonitors() { |
| 67 | prefixMonitors.forEach(Monitor::stopMonitor); |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Return a CIDR-notation string of prefix. |
| 72 | * |
| 73 | * @return the prefix in CIDR-notation |
| 74 | */ |
| 75 | IpPrefix getPrefix() { |
| 76 | return prefix; |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * Changes the monitors based on the new list given. |
| 81 | * |
| 82 | * @param newMonitors monitors to be added |
| 83 | */ |
| 84 | void changeMonitors(Map<String, Set<String>> newMonitors) { |
| 85 | Set<String> newTypes = newMonitors.keySet(); |
| 86 | Set<Monitor> monToRemove = Sets.newHashSet(); |
| 87 | Map<String, Set<String>> monToAdd = Maps.newHashMap(newMonitors); |
| 88 | |
| 89 | prefixMonitors.forEach(monitor -> { |
| 90 | String oldType = monitor.getType().toString(); |
| 91 | if (newTypes.contains(oldType)) { |
| 92 | Set<String> newHosts = newMonitors.get(oldType); |
| 93 | String oldHost = monitor.getHost(); |
| 94 | if (newHosts.contains(oldHost)) { |
| 95 | monToAdd.remove(oldHost, oldHost); |
| 96 | } else { |
| 97 | monToRemove.add(monitor); |
| 98 | } |
| 99 | } else { |
| 100 | monToRemove.add(monitor); |
| 101 | } |
| 102 | }); |
| 103 | |
| 104 | monToRemove.forEach(Monitor::stopMonitor); |
| 105 | prefixMonitors.removeAll(monToRemove); |
| 106 | |
| 107 | //TODO |
| 108 | monToAdd.forEach((type, values) -> { |
| 109 | if (type.equals(Monitor.Types.RIPE.toString())) { |
| 110 | values.forEach(host -> prefixMonitors.add(new RipeMonitor(prefix, host))); |
| 111 | } else if (type.equals(Monitor.Types.EXABGP.toString())) { |
| 112 | values.forEach(host -> prefixMonitors.add(new ExaBgpMonitor(prefix, host))); |
| 113 | } |
| 114 | }); |
| 115 | |
| 116 | startPrefixMonitors(); |
| 117 | } |
| 118 | |
| 119 | @Override |
| 120 | public int hashCode() { |
| 121 | return Objects.hashCode(prefix); |
| 122 | } |
| 123 | |
| 124 | @Override |
| 125 | public boolean equals(Object obj) { |
| 126 | if (this == obj) { |
| 127 | return true; |
| 128 | } |
| 129 | if (obj instanceof PrefixHandler) { |
| 130 | final PrefixHandler that = (PrefixHandler) obj; |
| 131 | return Objects.equals(this.prefix, that.prefix); |
| 132 | } |
| 133 | return false; |
| 134 | } |
| 135 | |
| 136 | } |