Rohit Singh | 35fd94c | 2019-11-11 16:38:18 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2019-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 | * This Work is contributed by Sterlite Technologies |
| 17 | */ |
| 18 | package org.onosproject.rest.resources; |
| 19 | |
| 20 | import com.fasterxml.jackson.databind.node.ObjectNode; |
| 21 | import org.onosproject.net.ConnectPoint; |
| 22 | import org.onosproject.net.Device; |
| 23 | import org.onosproject.net.DeviceId; |
| 24 | import org.onosproject.net.PortNumber; |
| 25 | import org.onosproject.net.behaviour.BitErrorRateState; |
| 26 | import org.onosproject.net.device.DeviceService; |
| 27 | import org.onosproject.rest.AbstractWebResource; |
| 28 | import org.slf4j.Logger; |
| 29 | import org.slf4j.LoggerFactory; |
| 30 | |
| 31 | import javax.ws.rs.GET; |
| 32 | import javax.ws.rs.Path; |
| 33 | import javax.ws.rs.PathParam; |
| 34 | import javax.ws.rs.Produces; |
| 35 | import javax.ws.rs.core.MediaType; |
| 36 | import javax.ws.rs.core.Response; |
| 37 | |
| 38 | /* |
| 39 | * Rest APIs to Fetch the BER(bit error rate) pre/post FEC(Forward Error Correction). |
| 40 | */ |
| 41 | @Path("bit-error-rate") |
| 42 | public class BitErrorRateWebResource extends AbstractWebResource { |
| 43 | |
| 44 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 45 | |
| 46 | private static final String DEVICE_NOT_FOUND = "Device is not found"; |
| 47 | private static final String BER_UNSUPPORTED = "Bit Error Rate is not supported"; |
| 48 | private static final String PRE_FEC_BER = "pre-fec-ber"; |
| 49 | private static final String POST_FEC_BER = "post-fec-ber"; |
| 50 | |
| 51 | /* |
| 52 | * This method returns the implemenation of BitErrorRateConfig interface. |
| 53 | * |
| 54 | * @param id the device identifier |
| 55 | * @return instance of BitErrorRateConfig driver implementation |
| 56 | */ |
| 57 | private BitErrorRateState getBitErrorRateState(String id) { |
| 58 | Device device = get(DeviceService.class).getDevice(DeviceId.deviceId(id)); |
| 59 | if (device == null) { |
| 60 | throw new IllegalArgumentException(DEVICE_NOT_FOUND); |
| 61 | } |
| 62 | if (device.is(BitErrorRateState.class)) { |
| 63 | return device.as(BitErrorRateState.class); |
| 64 | } |
| 65 | return null; |
| 66 | } |
| 67 | |
| 68 | /* |
| 69 | * Get Request to fetch the BER value before FEC. |
| 70 | * |
| 71 | * @param connectPointStr connectPoint (device/portNumber) |
| 72 | * @return Json Response with pre FEC,BER value |
| 73 | */ |
| 74 | @GET |
| 75 | @Path("{connectPoint}/pre_fec_ber") |
| 76 | @Produces(MediaType.APPLICATION_JSON) |
| 77 | public Response getPreFecBerValue(@PathParam("connectPoint") String connectPointStr) { |
| 78 | ConnectPoint connectPoint = ConnectPoint.deviceConnectPoint(connectPointStr); |
| 79 | BitErrorRateState bitErrorRateState = getBitErrorRateState(connectPoint.deviceId().toString()); |
| 80 | |
| 81 | if (bitErrorRateState == null) { |
| 82 | throw new IllegalArgumentException(BER_UNSUPPORTED); |
| 83 | } |
| 84 | ObjectNode result = encode(connectPoint.deviceId(), connectPoint.port(), |
| 85 | bitErrorRateState, PRE_FEC_BER); |
| 86 | return ok(result).build(); |
| 87 | } |
| 88 | |
| 89 | /* |
| 90 | * Get Request to fetch the BER value after FEC. |
| 91 | * |
| 92 | * @param connectPointStr connectPoint (device/portNumber) |
| 93 | * @return Json Response with post FEC,BER value |
| 94 | */ |
| 95 | @GET |
| 96 | @Path("{connectPoint}/post_fec_ber") |
| 97 | @Produces(MediaType.APPLICATION_JSON) |
| 98 | public Response getPostFecBerValue(@PathParam("connectPoint") String connectPointStr) { |
| 99 | ConnectPoint connectPoint = ConnectPoint.deviceConnectPoint(connectPointStr); |
| 100 | BitErrorRateState bitErrorRateState = getBitErrorRateState(connectPoint.deviceId().toString()); |
| 101 | |
| 102 | if (bitErrorRateState == null) { |
| 103 | throw new IllegalArgumentException(BER_UNSUPPORTED); |
| 104 | } |
| 105 | ObjectNode result = encode(connectPoint.deviceId(), connectPoint.port(), |
| 106 | bitErrorRateState, POST_FEC_BER); |
| 107 | return ok(result).build(); |
| 108 | } |
| 109 | |
| 110 | /* |
| 111 | * This method generates the Json Response for BER. |
| 112 | * |
| 113 | * @param id device identifier |
| 114 | * @param portId port identifier |
| 115 | * @param bitErrorRateConfig BitErrorRateConfig object |
| 116 | * @param type String value to differentiate Pre/Post Fec, Ber value |
| 117 | * @return ObjectNode instance |
| 118 | */ |
| 119 | private ObjectNode encode(DeviceId deviceId, PortNumber port, |
| 120 | BitErrorRateState bitErrorRateConfig, |
| 121 | String type) { |
| 122 | double ber = 0.0; |
| 123 | |
| 124 | if (PRE_FEC_BER.equals(type)) { |
| 125 | ber = bitErrorRateConfig.getPreFecBer(deviceId, port).get(); |
| 126 | } else if (POST_FEC_BER.equals(type)) { |
| 127 | ber = bitErrorRateConfig.getPostFecBer(deviceId, port).get(); |
| 128 | } else { |
| 129 | log.error("Invalid type"); |
| 130 | throw new IllegalArgumentException("Invalid type"); |
| 131 | } |
| 132 | ObjectNode responseNode = mapper().createObjectNode(); |
| 133 | |
| 134 | responseNode.put("deviceId", deviceId.toString()); |
| 135 | responseNode.put("portId", port.toString()); |
| 136 | responseNode.put("ber", ber); |
| 137 | |
| 138 | return responseNode; |
| 139 | } |
| 140 | } |