Java tutorial
/* * Copyright 2016-present Open Networking Laboratory * * 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.cordconfig.access; import com.fasterxml.jackson.databind.JsonNode; import com.fasterxml.jackson.databind.node.ObjectNode; import com.google.common.collect.Iterators; import com.google.common.collect.Maps; import org.onlab.packet.MacAddress; import org.onosproject.net.ConnectPoint; import org.onosproject.net.DeviceId; import org.onosproject.net.config.Config; import java.util.Map; import java.util.Optional; import static org.onosproject.net.config.Config.FieldPresence.MANDATORY; import static org.onosproject.net.config.Config.FieldPresence.OPTIONAL; /** * Represents configuration for an OLT agent. */ public class AccessAgentConfig extends Config<DeviceId> { private static final String OLTS = "olts"; private static final String AGENT_MAC = "mac"; // TODO: Remove this, it is only useful as long as XOS doesn't manage this. private static final String VTN_LOCATION = "vtn-location"; @Override public boolean isValid() { return hasOnlyFields(OLTS, AGENT_MAC, VTN_LOCATION) && isMacAddress(AGENT_MAC, MANDATORY) && isConnectPoint(VTN_LOCATION, OPTIONAL) && areOltsValid(); } /** * Gets the access agent configuration for this device. * * @return access agent configuration */ public AccessAgentData getAgent() { JsonNode olts = node.get(OLTS); Map<ConnectPoint, MacAddress> oltMacInfo = Maps.newHashMap(); olts.fields().forEachRemaining(item -> oltMacInfo.put(ConnectPoint.deviceConnectPoint(item.getKey()), MacAddress.valueOf(item.getValue().asText()))); MacAddress agentMac = MacAddress.valueOf(node.path(AGENT_MAC).asText()); JsonNode vtn = node.path(VTN_LOCATION); Optional<ConnectPoint> vtnLocation; if (vtn.isMissingNode()) { vtnLocation = Optional.empty(); } else { vtnLocation = Optional.of(ConnectPoint.deviceConnectPoint(vtn.asText())); } return new AccessAgentData(subject(), oltMacInfo, agentMac, vtnLocation); } private boolean areOltsValid() { JsonNode olts = node.get(OLTS); if (!olts.isObject()) { return false; } return Iterators.all(olts.fields(), item -> ConnectPoint.deviceConnectPoint(item.getKey()) != null && isMacAddress((ObjectNode) olts, item.getKey(), MANDATORY)); } }