| /* |
| * 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.drivers.cisco; |
| |
| import com.google.common.collect.Lists; |
| import org.apache.commons.configuration.HierarchicalConfiguration; |
| import org.onlab.packet.VlanId; |
| import org.onosproject.net.device.DefaultDeviceInterfaceDescription; |
| import org.onosproject.net.device.DeviceInterfaceDescription; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| |
| /** |
| * Parser for Netconf XML configurations and replies from Cisco devices. |
| */ |
| public final class XmlParserCisco { |
| |
| private static final String TRUNK_MODE_KEY = |
| "ConfigIf-Configuration.switchport.mode.trunk"; |
| private static final String ACCESS_KEY = |
| "ConfigIf-Configuration.switchport.access.vlan.VLANIDVLANPortAccessMode"; |
| private static final String TRUNK_VLAN_KEY = |
| "ConfigIf-Configuration.switchport.trunk.allowed.vlan.VLANIDsAllowedVLANsPortTrunkingMode"; |
| private static final String RATE_LIMIT_KEY = |
| "ConfigIf-Configuration.srr-queue.bandwidth.limit.EnterBandwidthLimitInterfaceAsPercentage"; |
| private static final short NO_LIMIT = -1; |
| |
| private XmlParserCisco() { |
| // Not to be called. |
| } |
| |
| /** |
| * Parses device configuration and returns the descriptions of the device |
| * interfaces. |
| * |
| * @param cfg an hierarchical configuration |
| * @return list of interface descriptions for the device |
| */ |
| |
| public static List<DeviceInterfaceDescription> getInterfacesFromConfig( |
| HierarchicalConfiguration cfg) { |
| List<DeviceInterfaceDescription> intfs = Lists.newArrayList(); |
| List<HierarchicalConfiguration> subtrees = |
| cfg.configurationsAt("data.xml-config-data.Device-Configuration.interface"); |
| for (HierarchicalConfiguration intfConfig :subtrees) { |
| String intfName = getInterfaceName(intfConfig); |
| DeviceInterfaceDescription.Mode intfMode = getInterfaceMode(intfConfig); |
| List<VlanId> intfVlans = getInterfaceVlans(intfConfig, intfMode); |
| short intfLimit = getInterfaceLimit(intfConfig); |
| boolean intfLimited = (intfLimit == NO_LIMIT ? false : true); |
| DeviceInterfaceDescription intf = |
| new DefaultDeviceInterfaceDescription(intfName, |
| intfMode, |
| intfVlans, |
| intfLimited, |
| intfLimit); |
| intfs.add(intf); |
| } |
| return intfs; |
| } |
| |
| private static String getInterfaceName(HierarchicalConfiguration intfConfig) { |
| return intfConfig.getString("Param"); |
| } |
| |
| private static DeviceInterfaceDescription.Mode |
| getInterfaceMode(HierarchicalConfiguration intfConfig) { |
| if (intfConfig.containsKey(TRUNK_MODE_KEY)) { |
| return DeviceInterfaceDescription.Mode.TRUNK; |
| } else if (intfConfig.containsKey(ACCESS_KEY)) { |
| return DeviceInterfaceDescription.Mode.ACCESS; |
| } else { |
| return DeviceInterfaceDescription.Mode.NORMAL; |
| } |
| } |
| |
| private static List<VlanId> getInterfaceVlans( |
| HierarchicalConfiguration intfConfig, |
| DeviceInterfaceDescription.Mode mode) { |
| List<VlanId> vlans = Lists.newArrayList(); |
| if (mode == DeviceInterfaceDescription.Mode.ACCESS) { |
| vlans.add(getVlanForAccess(intfConfig)); |
| } else if (mode == DeviceInterfaceDescription.Mode.TRUNK) { |
| vlans.addAll(getVlansForTrunk(intfConfig)); |
| } |
| return vlans; |
| } |
| |
| private static VlanId getVlanForAccess(HierarchicalConfiguration intfConfig) { |
| if (intfConfig.containsKey(ACCESS_KEY)) { |
| return VlanId.vlanId(intfConfig.getString(ACCESS_KEY)); |
| } |
| return null; |
| } |
| |
| private static List<VlanId> getVlansForTrunk(HierarchicalConfiguration intfConfig) { |
| if (intfConfig.containsKey(TRUNK_VLAN_KEY)) { |
| return parseVlans(intfConfig.getStringArray(TRUNK_VLAN_KEY)); |
| } |
| return null; |
| } |
| |
| private static List<VlanId> parseVlans(String[] vlansString) { |
| List<VlanId> vlans = Lists.newArrayList(); |
| List<String> items = Arrays.asList(vlansString); |
| for (String item: items) { |
| int index = item.indexOf("-"); |
| if (index == -1) { |
| // Not a range o values |
| vlans.add(VlanId.vlanId(item)); |
| } else { |
| // A range of values separated with "-" |
| short lowerVlan = Short.parseShort(item.substring(0, index)); |
| short higherVlan = Short.parseShort(item.substring(index + 1)); |
| for (short i = lowerVlan; i <= higherVlan; i++) { |
| vlans.add(VlanId.vlanId(i)); |
| } |
| } |
| } |
| return vlans; |
| } |
| |
| private static short getInterfaceLimit(HierarchicalConfiguration intfConfig) { |
| if (intfConfig.containsKey(RATE_LIMIT_KEY)) { |
| return intfConfig.getShort(RATE_LIMIT_KEY); |
| } |
| return NO_LIMIT; |
| } |
| } |