Aaron Kruglikov | 309068e | 2017-03-17 15:25:54 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2017-present Open Networking Laboratory |
| 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.netconf.storeadapter; |
| 18 | |
| 19 | import com.google.common.annotations.Beta; |
| 20 | import org.apache.felix.scr.annotations.Activate; |
| 21 | import org.apache.felix.scr.annotations.Component; |
| 22 | |
| 23 | import org.apache.felix.scr.annotations.Deactivate; |
| 24 | import org.apache.felix.scr.annotations.Reference; |
| 25 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 26 | import org.onosproject.config.DynamicConfigEvent; |
| 27 | import org.onosproject.config.DynamicConfigListener; |
| 28 | import org.onosproject.config.DynamicConfigService; |
| 29 | import org.onosproject.config.Filter; |
| 30 | import org.onosproject.mastership.MastershipService; |
| 31 | import org.onosproject.net.DeviceId; |
| 32 | import org.onosproject.net.resource.Resource; |
| 33 | import org.onosproject.netconf.client.NetconfTranslator; |
| 34 | import org.onosproject.netconf.client.NetconfTranslator.OperationType; |
| 35 | import org.onosproject.yang.model.DataNode; |
| 36 | import org.onosproject.yang.model.ResourceId; |
| 37 | import org.onosproject.yang.runtime.DefaultResourceData; |
| 38 | import org.slf4j.Logger; |
| 39 | import org.slf4j.LoggerFactory; |
| 40 | |
| 41 | import java.io.IOException; |
| 42 | |
| 43 | @Beta |
| 44 | @Component(immediate = true) |
| 45 | public class NetconfYangListener implements DynamicConfigListener { |
| 46 | |
| 47 | private static final Logger log = LoggerFactory.getLogger(NetconfYangListener.class); |
| 48 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 49 | protected DynamicConfigService cfgServcie; |
| 50 | public static final String DEVNMSPACE = "namespace1"; |
| 51 | |
| 52 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 53 | protected NetconfTranslator netconfTranslator; |
| 54 | |
| 55 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 56 | protected MastershipService mastershipService; |
| 57 | |
| 58 | private ResourceId resId = new ResourceId.Builder() |
| 59 | .addBranchPointSchema("device", DEVNMSPACE ) |
| 60 | .build(); |
| 61 | @Activate |
| 62 | protected void activate() { |
| 63 | cfgServcie.addListener(this); |
| 64 | log.info("Started"); |
| 65 | } |
| 66 | |
| 67 | @Deactivate |
| 68 | protected void deactivate() { |
| 69 | cfgServcie.removeListener(this); |
| 70 | log.info("Stopped"); |
| 71 | } |
| 72 | |
| 73 | @Override |
| 74 | public boolean isRelevant(DynamicConfigEvent event) { |
| 75 | if (event.subject().equals(resId) && |
| 76 | mastershipService.isLocalMaster(retrieveDeviceId(event.subject()))) { |
| 77 | return true; |
| 78 | } else { |
| 79 | return false; |
| 80 | } |
| 81 | } |
| 82 | @Override |
| 83 | public void event(DynamicConfigEvent event) { |
| 84 | Filter filt = new Filter(); |
| 85 | DataNode node = cfgServcie.readNode(event.subject(), filt); |
| 86 | DeviceId deviceId = retrieveDeviceId(event.subject()); |
| 87 | switch (event.type()) { |
| 88 | case NODE_ADDED: |
| 89 | case NODE_UPDATED: |
| 90 | case NODE_REPLACED: |
| 91 | configUpdate(node, deviceId, event.subject()); |
| 92 | break; |
| 93 | case NODE_DELETED: |
| 94 | configDelete(node, deviceId, event.subject()); |
| 95 | break; |
| 96 | case UNKNOWN_OPRN: |
| 97 | default: |
| 98 | log.warn("NetConfListener: unknown event: {}", event.type()); |
| 99 | break; |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * Performs the delete operation corresponding to the passed event. |
| 105 | * @param node a relevant dataNode |
| 106 | * @param deviceId the deviceId of the device to be updated |
| 107 | * @param resourceId the resourceId of the root of the subtree to be edited |
| 108 | * @return true if the update succeeds false otherwise |
| 109 | */ |
| 110 | private boolean configDelete(DataNode node, DeviceId deviceId, ResourceId resourceId) { |
| 111 | return parseAndEdit(node, deviceId, resourceId, OperationType.DELETE); |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * Performs the update operation corresponding to the passed event. |
| 116 | * @param node a relevant dataNode |
| 117 | * @param deviceId the deviceId of the device to be updated |
| 118 | * @param resourceId the resourceId of the root of the subtree to be edited |
| 119 | * @return true if the update succeeds false otherwise |
| 120 | */ |
| 121 | private boolean configUpdate(DataNode node, DeviceId deviceId, ResourceId resourceId) { |
| 122 | return parseAndEdit(node, deviceId, resourceId, OperationType.REPLACE); |
| 123 | } |
| 124 | |
| 125 | /** |
| 126 | * Parses the incoming event and pushes configuration to the effected |
| 127 | * device. |
| 128 | * @param node the dataNode effecting a particular device of which this node |
| 129 | * is master |
| 130 | * @param deviceId the deviceId of the device to be modified |
| 131 | * @param resourceId the resourceId of the root of the subtree to be edited |
| 132 | * @param operationType the type of editing to be performed |
| 133 | * @return true if the operation succeeds, false otherwise |
| 134 | */ |
| 135 | private boolean parseAndEdit(DataNode node, DeviceId deviceId, |
| 136 | ResourceId resourceId, |
| 137 | NetconfTranslator.OperationType operationType) { |
| 138 | try { |
| 139 | return netconfTranslator.editDeviceConfig( |
| 140 | deviceId, |
| 141 | DefaultResourceData.builder() |
| 142 | .addDataNode(node) |
| 143 | .resourceId(resourceId) |
| 144 | .build(), |
| 145 | operationType); |
| 146 | } catch (IOException e) { |
| 147 | e.printStackTrace(); |
| 148 | return false; |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * Takes a resourceId corresponding to the provided event and uses it to |
| 154 | * retrieve/generate a deviceId corresponding to the effected device. |
| 155 | * @param resourceId the resourceId associated with the event |
| 156 | * @return the deviceId of the effected device |
| 157 | */ |
| 158 | private DeviceId retrieveDeviceId(ResourceId resourceId) { |
| 159 | /*TODO this requires a real implementation instead of a placeholder */ |
| 160 | return DeviceId.NONE; |
| 161 | } |
| 162 | } |