Daniel Park | 577b69c | 2018-07-16 17:29:34 +0900 | [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 | package org.onosproject.openstacknetworkingui; |
| 17 | |
| 18 | import com.fasterxml.jackson.databind.ObjectMapper; |
| 19 | import com.fasterxml.jackson.databind.node.ArrayNode; |
| 20 | import com.fasterxml.jackson.databind.node.ObjectNode; |
| 21 | |
| 22 | /** |
| 23 | * Parser class for flow trace result string from OVS28. |
| 24 | */ |
| 25 | public final class Ovs28FlowTraceResultParser { |
| 26 | private static final String TRACE_NODE_NAME = "traceNodeName"; |
| 27 | private static final String IS_SUCCESS = "isSuccess"; |
| 28 | private static final String FLOW_RULES = "flowRules"; |
| 29 | private static final String TABLE = "table"; |
| 30 | private static final String PRIORITY = "priority"; |
| 31 | private static final String SELECTOR = "selector"; |
| 32 | private static final String ACTIONS = "actions"; |
| 33 | private static final String BRIDGE = "bridge"; |
| 34 | private static final String DATAPATH = "Datapath"; |
| 35 | private static final String DROP = "drop"; |
| 36 | private static final String COMMA = ","; |
| 37 | private static final String DOT = "\\."; |
| 38 | private static final String NEW_LINE = "\n"; |
| 39 | |
| 40 | private Ovs28FlowTraceResultParser() { |
| 41 | } |
| 42 | |
| 43 | public static ObjectNode flowTraceResultInJson(String outputStream, String hostName) { |
| 44 | if (outputStream == null || hostName == null) { |
| 45 | return null; |
| 46 | } |
| 47 | |
| 48 | ObjectMapper mapper = new ObjectMapper(); |
| 49 | ObjectNode jsonNode = mapper.createObjectNode(); |
| 50 | |
| 51 | int flowRuleStartLineNum = 0; |
| 52 | int flowRuleEndLineNum = 0; |
| 53 | |
| 54 | jsonNode.put(TRACE_NODE_NAME, hostName); |
| 55 | |
| 56 | String[] lines = outputStream.split(NEW_LINE); |
| 57 | |
| 58 | for (int i = 0; i < lines.length; i++) { |
| 59 | if (lines[i].startsWith(BRIDGE)) { |
| 60 | flowRuleStartLineNum = i + 2; |
| 61 | } |
| 62 | |
| 63 | if (lines[i].startsWith(DATAPATH)) { |
| 64 | flowRuleEndLineNum = i; |
| 65 | break; |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | ArrayNode arrayNode = jsonNode.putArray(FLOW_RULES); |
| 70 | |
| 71 | for (int i = flowRuleStartLineNum; i < flowRuleEndLineNum; i = i + 2) { |
| 72 | if (!isNewFlowTable(lines[i])) { |
| 73 | break; |
| 74 | } |
| 75 | |
| 76 | ObjectNode flowRule = arrayNode.addObject(); |
| 77 | |
| 78 | flowRule.put(TABLE, tableNum(lines[i])); |
| 79 | flowRule.put(PRIORITY, priority(lines[i])); |
| 80 | flowRule.put(SELECTOR, selector(lines[i])); |
| 81 | |
| 82 | String actions = action(lines[i + 1]); |
| 83 | |
| 84 | if (!isNewFlowTable(lines[i + 2])) { |
| 85 | actions = actions + "\n" + action(lines[i + 2]); |
| 86 | i = i + 1; |
| 87 | } |
| 88 | |
| 89 | flowRule.put(ACTIONS, actions); |
| 90 | } |
| 91 | |
| 92 | if (lines[flowRuleEndLineNum].contains(DROP)) { |
| 93 | jsonNode.put(IS_SUCCESS, false); |
| 94 | } else { |
| 95 | jsonNode.put(IS_SUCCESS, true); |
| 96 | } |
| 97 | |
| 98 | return jsonNode; |
| 99 | } |
| 100 | |
| 101 | private static boolean isNewFlowTable(String line) { |
| 102 | return line.contains(PRIORITY); |
| 103 | } |
| 104 | |
| 105 | private static String tableNum(String line) { |
| 106 | return line.split(DOT)[0]; |
| 107 | } |
| 108 | |
| 109 | private static String priority(String line) { |
| 110 | return line.split(PRIORITY)[1].trim().split(COMMA)[0]; |
| 111 | } |
| 112 | |
| 113 | private static String selector(String line) { |
| 114 | if (!hasSelector(line)) { |
| 115 | return ""; |
| 116 | } |
| 117 | |
| 118 | String selectorString = line.trim().split(PRIORITY)[0].split(" ")[1]; |
| 119 | |
| 120 | return selectorString.replaceAll(COMMA, NEW_LINE); |
| 121 | } |
| 122 | |
| 123 | private static boolean hasSelector(String line) { |
| 124 | String tableNum = tableNum(line); |
| 125 | return !line.replaceFirst(tableNum + DOT + " ", "").startsWith(PRIORITY); |
| 126 | } |
| 127 | |
| 128 | private static String action(String line) { |
| 129 | return line.trim(); |
| 130 | } |
| 131 | |
| 132 | |
| 133 | } |