Yixiao Chen | 5ece00f | 2016-09-14 16:23:24 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 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 | package org.onosproject.provider.te.topology; |
| 17 | |
| 18 | import static org.onosproject.yms.ydt.YdtContextOperationType.NONE; |
| 19 | |
| 20 | import java.io.IOException; |
| 21 | import java.io.InputStream; |
| 22 | |
| 23 | import org.apache.commons.io.IOUtils; |
| 24 | import org.onosproject.protocol.restconf.server.utils.parser.json.ParserUtils; |
| 25 | import org.onosproject.yms.ych.YangCompositeEncoding; |
| 26 | import org.onosproject.yms.ych.YangDataTreeCodec; |
| 27 | import org.onosproject.yms.ydt.YdtBuilder; |
| 28 | import org.onosproject.yms.ydt.YmsOperationType; |
| 29 | import org.onosproject.yms.ymsm.YmsService; |
| 30 | import org.slf4j.Logger; |
| 31 | import org.slf4j.LoggerFactory; |
| 32 | |
| 33 | import com.fasterxml.jackson.databind.ObjectMapper; |
| 34 | import com.fasterxml.jackson.databind.node.ObjectNode; |
| 35 | |
| 36 | |
| 37 | /** |
| 38 | * JSON/YDT Codec implementation. |
| 39 | */ |
| 40 | public class JsonYdtCodec implements YangDataTreeCodec { |
| 41 | private static final String RESTCONF_ROOT = "restconf/data"; |
| 42 | |
| 43 | protected final YmsService ymsService; |
| 44 | |
| 45 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 46 | |
| 47 | public JsonYdtCodec(YmsService service) { |
| 48 | ymsService = service; |
| 49 | } |
| 50 | |
| 51 | @Override |
| 52 | public String encodeYdtToProtocolFormat(YdtBuilder builder, |
| 53 | YmsOperationType opType) { |
| 54 | String json = ParserUtils.convertYdtToJson(builder.getRootNode().getName(), |
| 55 | builder.getRootNode(), |
| 56 | ymsService.getYdtWalker()) |
| 57 | .textValue(); |
| 58 | return json; |
| 59 | } |
| 60 | |
| 61 | @Override |
| 62 | public YangCompositeEncoding encodeYdtToCompositeProtocolFormat(YdtBuilder builder, |
| 63 | YmsOperationType opType) { |
| 64 | // Mainly for POST/PUT operation. |
| 65 | // YdtBuilder/YdtContext has YdtContextType NONE for URI, |
| 66 | // YdtContextType CREATE/MERGE/REPLACE for Resource data. |
| 67 | |
| 68 | // TODO: Implement this method in Release Ibis for TE Tunnel. |
| 69 | |
| 70 | return null; |
| 71 | } |
| 72 | |
| 73 | @Override |
| 74 | public YdtBuilder decodeProtocolDataToYdt(String protocolData, |
| 75 | Object schemaRegistryForYdt, |
| 76 | YmsOperationType opType) { |
| 77 | // Get a new builder |
| 78 | YdtBuilder builder = ymsService.getYdtBuilder(RESTCONF_ROOT, |
| 79 | null, |
| 80 | opType, |
| 81 | schemaRegistryForYdt); |
| 82 | ParserUtils.convertJsonToYdt(getObjectNode(protocolData), builder); |
| 83 | return builder; |
| 84 | } |
| 85 | |
| 86 | @Override |
| 87 | public YdtBuilder decodeCompositeProtocolDataToYdt(YangCompositeEncoding protocolData, |
| 88 | Object schemaRegistryForYdt, |
| 89 | YmsOperationType opType) { |
| 90 | // opType should be QUERY_REPLY |
| 91 | // Get a new builder |
| 92 | YdtBuilder builder = ymsService.getYdtBuilder(RESTCONF_ROOT, |
| 93 | null, |
| 94 | opType, |
| 95 | schemaRegistryForYdt); |
| 96 | // Convert the URI to ydtBuilder |
| 97 | |
| 98 | // YdtContextOperationType should be NONE for URI in QUERY_RESPONSE. |
| 99 | ParserUtils.convertUriToYdt(protocolData.getResourceIdentifier(), builder, NONE); |
| 100 | // Set default operation type for the payload node, is this for resource data? |
| 101 | // NULL/EMPTY for Resource data |
| 102 | builder.setDefaultEditOperationType(null); |
| 103 | |
| 104 | // Convert the payload json body to ydt |
| 105 | ParserUtils.convertJsonToYdt(getObjectNode(protocolData.getResourceInformation()), builder); |
| 106 | return builder; |
| 107 | } |
| 108 | |
| 109 | // Returns an ObjectNode from s JSON string. |
| 110 | private ObjectNode getObjectNode(String json) { |
| 111 | InputStream stream = IOUtils.toInputStream(json); |
| 112 | |
| 113 | ObjectNode rootNode; |
| 114 | ObjectMapper mapper = new ObjectMapper(); |
| 115 | try { |
| 116 | rootNode = (ObjectNode) mapper.readTree(stream); |
| 117 | } catch (IOException e) { |
| 118 | log.error("Can't read stream as a JSON ObjectNode: {}", e); |
| 119 | return null; |
| 120 | } |
| 121 | return rootNode; |
| 122 | } |
| 123 | |
| 124 | } |