hiroki | b8ddc3f | 2018-06-02 08:29:42 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2018-present Open Networking Foundation |
| 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 | |
| 17 | package org.onosproject.odtn.internal; |
| 18 | |
| 19 | import java.util.ArrayList; |
| 20 | import java.util.List; |
| 21 | import java.util.Optional; |
| 22 | import org.onosproject.net.DeviceId; |
| 23 | import org.onosproject.net.PortNumber; |
| 24 | import org.onosproject.net.device.DeviceService; |
| 25 | import org.onosproject.netconf.NetconfDevice; |
| 26 | import org.onosproject.netconf.NetconfException; |
| 27 | import org.onosproject.odtn.behaviour.ConfigurableTransceiver; |
| 28 | import org.onosproject.odtn.behaviour.OdtnTerminalDeviceDriver; |
| 29 | import org.onosproject.odtn.behaviour.PlainTransceiver; |
| 30 | |
| 31 | import static com.google.common.base.Preconditions.checkNotNull; |
| 32 | import static org.onlab.osgi.DefaultServiceDirectory.getService; |
| 33 | |
| 34 | import static org.onosproject.odtn.utils.YangToolUtil.toCharSequence; |
| 35 | import static org.onosproject.odtn.utils.YangToolUtil.toDocument; |
| 36 | |
| 37 | import javax.xml.parsers.DocumentBuilderFactory; |
| 38 | import javax.xml.parsers.ParserConfigurationException; |
| 39 | |
| 40 | import org.onlab.util.XmlString; |
| 41 | import org.onosproject.netconf.NetconfController; |
| 42 | import org.w3c.dom.Document; |
| 43 | import org.w3c.dom.Element; |
| 44 | |
| 45 | import com.google.common.io.CharSource; |
| 46 | |
| 47 | import org.slf4j.Logger; |
| 48 | import org.slf4j.LoggerFactory; |
| 49 | |
| 50 | |
| 51 | /** |
| 52 | * Device driver implementation for ODTN Phase1.0. |
| 53 | * <p> |
| 54 | * NETCONF SB should be provided by DCS, but currently DCS SB driver have |
| 55 | * some critical problem to configure actual devices and netconf servers, |
| 56 | * as a workaround this posts netconf edit-config directly. |
| 57 | */ |
| 58 | public final class DefaultOdtnTerminalDeviceDriver implements OdtnTerminalDeviceDriver { |
| 59 | |
| 60 | protected final Logger log = LoggerFactory.getLogger(getClass()); |
| 61 | |
| 62 | private DeviceService deviceService; |
| 63 | |
| 64 | private DefaultOdtnTerminalDeviceDriver() { |
| 65 | } |
| 66 | |
| 67 | public static DefaultOdtnTerminalDeviceDriver create() { |
| 68 | DefaultOdtnTerminalDeviceDriver self = new DefaultOdtnTerminalDeviceDriver(); |
| 69 | self.deviceService = getService(DeviceService.class); |
| 70 | return self; |
| 71 | } |
| 72 | |
| 73 | @Override |
| 74 | public void apply(DeviceId did, PortNumber client, PortNumber line, boolean enable) { |
| 75 | |
| 76 | checkNotNull(did); |
| 77 | checkNotNull(client); |
| 78 | checkNotNull(line); |
| 79 | |
| 80 | List<CharSequence> nodes = new ArrayList<>(); |
| 81 | |
| 82 | ConfigurableTransceiver transceiver = |
| 83 | Optional.ofNullable(did) |
| 84 | .map(deviceService::getDevice) |
| 85 | .filter(device -> device.is(ConfigurableTransceiver.class)) |
| 86 | .map(device -> device.as(ConfigurableTransceiver.class)) |
| 87 | .orElseGet(() -> new PlainTransceiver()); |
| 88 | |
| 89 | nodes.addAll(transceiver.enable(client, line, enable)); |
| 90 | if (nodes.size() == 0) { |
| 91 | log.warn("Nothing to be configured."); |
| 92 | return; |
| 93 | } |
| 94 | |
| 95 | Document doc = buildEditConfigBody(nodes); |
| 96 | configureDevice(did, doc); |
| 97 | } |
| 98 | |
| 99 | private Document buildEditConfigBody(List<CharSequence> nodes) { |
| 100 | |
| 101 | Document doc; |
| 102 | try { |
| 103 | doc = DocumentBuilderFactory.newInstance() |
| 104 | .newDocumentBuilder().newDocument(); |
| 105 | } catch (ParserConfigurationException e) { |
| 106 | log.error("Unexpected error", e); |
| 107 | throw new IllegalStateException(e); |
| 108 | } |
| 109 | |
| 110 | Element config = addEditConfigEnvelope(doc); |
| 111 | |
| 112 | for (CharSequence node : nodes) { |
| 113 | Document ldoc = toDocument(CharSource.wrap(node)); |
| 114 | Element cfgRoot = ldoc.getDocumentElement(); |
| 115 | |
| 116 | cfgRoot.setAttribute("xc:operation", Operation.MERGE.value()); |
| 117 | |
| 118 | // move (or copy) node to another Document |
| 119 | config.appendChild(Optional.ofNullable(doc.adoptNode(cfgRoot)) |
| 120 | .orElseGet(() -> doc.importNode(cfgRoot, true))); |
| 121 | |
| 122 | } |
| 123 | |
| 124 | log.info("XML:\n{}", XmlString.prettifyXml(toCharSequence(doc))); |
| 125 | return doc; |
| 126 | } |
| 127 | |
| 128 | private Element addEditConfigEnvelope(Document doc) { |
| 129 | |
| 130 | // netconf rpc boilerplate part without message-id |
| 131 | Element rpc = doc.createElementNS("urn:ietf:params:xml:ns:netconf:base:1.0", "rpc"); |
| 132 | doc.appendChild(rpc); |
| 133 | Element editConfig = doc.createElement("edit-config"); |
| 134 | rpc.appendChild(editConfig); |
| 135 | Element target = doc.createElement("target"); |
| 136 | editConfig.appendChild(target); |
| 137 | target.appendChild(doc.createElement("running")); |
| 138 | |
| 139 | Element config = doc.createElement("config"); |
| 140 | config.setAttributeNS("http://www.w3.org/2000/xmlns/", |
| 141 | "xmlns:xc", |
| 142 | "urn:ietf:params:xml:ns:netconf:base:1.0"); |
| 143 | editConfig.appendChild(config); |
| 144 | |
| 145 | return config; |
| 146 | } |
| 147 | |
| 148 | private void configureDevice(DeviceId did, Document doc) { |
| 149 | |
| 150 | NetconfController ctr = getService(NetconfController.class); |
| 151 | Optional.ofNullable(ctr.getNetconfDevice(did)) |
| 152 | .map(NetconfDevice::getSession) |
| 153 | .ifPresent(session -> { |
| 154 | try { |
| 155 | session.rpc(toCharSequence(doc, false).toString()).join(); |
| 156 | } catch (NetconfException e) { |
| 157 | log.error("Exception thrown", e); |
| 158 | } |
| 159 | }); |
| 160 | } |
| 161 | |
| 162 | } |