| /* |
| * Copyright 2016-present Open Networking Foundation |
| * |
| * Licensed 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.onosproject.artemis.impl; |
| |
| import com.google.common.collect.Maps; |
| import com.google.common.collect.Sets; |
| import org.onlab.packet.IpPrefix; |
| import org.onosproject.artemis.impl.monitors.ExaBgpMonitor; |
| import org.onosproject.artemis.impl.monitors.Monitor; |
| import org.onosproject.artemis.impl.monitors.RipeMonitor; |
| |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.Set; |
| |
| /** |
| * Handler of monitoring step for each different prefix. |
| * This class contains all the running monitors of the specified prefix. |
| */ |
| class PrefixHandler { |
| |
| private IpPrefix prefix; |
| private Set<Monitor> prefixMonitors = Sets.newHashSet(); |
| |
| /** |
| * Constructor that takes a CIDR-notation string and a list of monitors. |
| * |
| * @param prefix A CIDR-notation string, e.g. "192.168.0.1/24" |
| * @param monitors A map of strings to a set of string for monitors, e.g. "ripe", ["host1","host2",..] |
| */ |
| PrefixHandler(IpPrefix prefix, Map<String, Set<String>> monitors) { |
| this.prefix = prefix; |
| |
| monitors.forEach((type, values) -> { |
| if (type.equals(Monitor.Types.RIPE.toString())) { |
| values.forEach(host -> prefixMonitors.add(new RipeMonitor(prefix, host))); |
| } else if (type.equals(Monitor.Types.EXABGP.toString())) { |
| values.forEach(host -> prefixMonitors.add(new ExaBgpMonitor(prefix, host))); |
| } |
| }); |
| } |
| |
| /** |
| * Start all monitors for this prefix. |
| */ |
| void startPrefixMonitors() { |
| prefixMonitors.forEach(Monitor::startMonitor); |
| } |
| |
| /** |
| * Stop all monitors for this prefix. |
| */ |
| void stopPrefixMonitors() { |
| prefixMonitors.forEach(Monitor::stopMonitor); |
| } |
| |
| /** |
| * Return a CIDR-notation string of prefix. |
| * |
| * @return the prefix in CIDR-notation |
| */ |
| IpPrefix getPrefix() { |
| return prefix; |
| } |
| |
| /** |
| * Changes the monitors based on the new list given. |
| * |
| * @param newMonitors monitors to be added |
| */ |
| void changeMonitors(Map<String, Set<String>> newMonitors) { |
| Set<String> newTypes = newMonitors.keySet(); |
| Set<Monitor> monToRemove = Sets.newHashSet(); |
| Map<String, Set<String>> monToAdd = Maps.newHashMap(newMonitors); |
| |
| prefixMonitors.forEach(monitor -> { |
| String oldType = monitor.getType().toString(); |
| if (newTypes.contains(oldType)) { |
| Set<String> newHosts = newMonitors.get(oldType); |
| String oldHost = monitor.getHost(); |
| if (newHosts.contains(oldHost)) { |
| monToAdd.remove(oldHost, oldHost); |
| } else { |
| monToRemove.add(monitor); |
| } |
| } else { |
| monToRemove.add(monitor); |
| } |
| }); |
| |
| monToRemove.forEach(Monitor::stopMonitor); |
| prefixMonitors.removeAll(monToRemove); |
| |
| //TODO |
| monToAdd.forEach((type, values) -> { |
| if (type.equals(Monitor.Types.RIPE.toString())) { |
| values.forEach(host -> prefixMonitors.add(new RipeMonitor(prefix, host))); |
| } else if (type.equals(Monitor.Types.EXABGP.toString())) { |
| values.forEach(host -> prefixMonitors.add(new ExaBgpMonitor(prefix, host))); |
| } |
| }); |
| |
| startPrefixMonitors(); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hashCode(prefix); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj instanceof PrefixHandler) { |
| final PrefixHandler that = (PrefixHandler) obj; |
| return Objects.equals(this.prefix, that.prefix); |
| } |
| return false; |
| } |
| |
| } |