jaegonkim | 6a7b524 | 2018-09-12 23:09:42 +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.workflow.api; |
| 17 | |
| 18 | import com.fasterxml.jackson.databind.JsonNode; |
| 19 | import com.fasterxml.jackson.databind.node.JsonNodeFactory; |
| 20 | import com.fasterxml.jackson.databind.node.MissingNode; |
| 21 | import com.fasterxml.jackson.databind.node.ObjectNode; |
| 22 | import com.fasterxml.jackson.databind.node.TextNode; |
| 23 | import com.google.common.base.MoreObjects; |
| 24 | |
| 25 | import java.net.URI; |
| 26 | |
| 27 | |
| 28 | /** |
| 29 | * Class for default workflow description. |
| 30 | */ |
| 31 | public final class DefaultWorkflowDescription implements WorkflowDescription { |
| 32 | |
| 33 | /** |
| 34 | * Workplace Name. |
| 35 | */ |
| 36 | private String workplaceName; |
| 37 | |
| 38 | /** |
| 39 | * Workflow ID. |
| 40 | */ |
| 41 | private URI id; |
| 42 | |
| 43 | /** |
| 44 | * Workflow data model. |
| 45 | */ |
| 46 | private JsonNode data; |
| 47 | |
| 48 | /** |
| 49 | * Constructor of workflow description. |
| 50 | * @param builder workflow description builder |
| 51 | */ |
| 52 | private DefaultWorkflowDescription(Builder builder) { |
| 53 | this.workplaceName = builder.workplaceName; |
| 54 | this.id = builder.id; |
| 55 | this.data = builder.data; |
| 56 | } |
| 57 | |
| 58 | @Override |
| 59 | public String workplaceName() { |
| 60 | return this.workplaceName; |
| 61 | } |
| 62 | |
| 63 | @Override |
| 64 | public URI id() { |
| 65 | return this.id; |
| 66 | } |
| 67 | |
| 68 | @Override |
| 69 | public String workflowContextName() { |
| 70 | return DefaultWorkflowContext.nameBuilder(id(), workplaceName()); |
| 71 | } |
| 72 | |
| 73 | @Override |
| 74 | public JsonNode data() { |
| 75 | return this.data; |
| 76 | } |
| 77 | |
| 78 | /** |
| 79 | * Creating workflow description from json tree. |
| 80 | * @param root root node for workflow description |
| 81 | * @return workflow description |
| 82 | * @throws WorkflowException workflow exception |
| 83 | */ |
| 84 | public static DefaultWorkflowDescription valueOf(JsonNode root) throws WorkflowException { |
| 85 | |
| 86 | JsonNode node = root.at(ptr(WF_WORKPLACE)); |
| 87 | if (!(node instanceof TextNode)) { |
| 88 | throw new WorkflowException("invalid workflow workplace for " + root); |
| 89 | } |
| 90 | String wfWorkplaceName = node.asText(); |
| 91 | |
| 92 | node = root.at(ptr(WF_ID)); |
| 93 | if (!(node instanceof TextNode)) { |
| 94 | throw new WorkflowException("invalid workflow id for " + root); |
| 95 | } |
| 96 | URI wfId = URI.create(node.asText()); |
| 97 | |
| 98 | node = root.at(ptr(WF_DATA)); |
| 99 | if (node instanceof MissingNode) { |
| 100 | throw new WorkflowException("invalid workflow data for " + root); |
| 101 | } |
| 102 | JsonNode wfData = node; |
| 103 | |
| 104 | return builder() |
| 105 | .workplaceName(wfWorkplaceName) |
| 106 | .id(wfId) |
| 107 | .data(wfData) |
| 108 | .build(); |
| 109 | } |
| 110 | |
| 111 | private static String ptr(String field) { |
| 112 | return "/" + field; |
| 113 | } |
| 114 | |
| 115 | @Override |
| 116 | public JsonNode toJson() { |
| 117 | ObjectNode root = JsonNodeFactory.instance.objectNode(); |
| 118 | root.put(WF_WORKPLACE, workplaceName()); |
| 119 | root.put(WF_ID, id().toString()); |
| 120 | root.put(WF_DATA, data()); |
| 121 | return root; |
| 122 | } |
| 123 | |
| 124 | @Override |
| 125 | public String toString() { |
| 126 | return MoreObjects.toStringHelper(getClass()) |
| 127 | .add("workplace", workplaceName()) |
| 128 | .add("id", id()) |
| 129 | .add("data", data()) |
| 130 | .toString(); |
| 131 | } |
| 132 | |
| 133 | /** |
| 134 | * Gets builder instance. |
| 135 | * @return builder instance |
| 136 | */ |
| 137 | public static Builder builder() { |
| 138 | return new Builder(); |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * Builder for workflow description. |
| 143 | */ |
| 144 | public static class Builder { |
| 145 | |
| 146 | /** |
| 147 | * Workplace name. |
| 148 | */ |
| 149 | private String workplaceName; |
| 150 | |
| 151 | /** |
| 152 | * Workflow ID. |
| 153 | */ |
| 154 | private URI id; |
| 155 | |
| 156 | /** |
| 157 | * Workflow data model. |
| 158 | */ |
| 159 | private JsonNode data; |
| 160 | |
| 161 | /** |
| 162 | * Sets workplace name. |
| 163 | * @param workplaceName workplace name |
| 164 | * @return builder |
| 165 | */ |
| 166 | public Builder workplaceName(String workplaceName) { |
| 167 | this.workplaceName = workplaceName; |
| 168 | return this; |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * Sets workflow id. |
| 173 | * @param id workflow ID |
| 174 | * @return builder |
| 175 | */ |
| 176 | public Builder id(URI id) { |
| 177 | this.id = id; |
| 178 | return this; |
| 179 | } |
| 180 | |
| 181 | /** |
| 182 | * Sets workflow id. |
| 183 | * @param id workflow ID string |
| 184 | * @return builder |
| 185 | */ |
| 186 | public Builder id(String id) { |
| 187 | this.id = URI.create(id); |
| 188 | return this; |
| 189 | } |
| 190 | |
| 191 | /** |
| 192 | * Sets workflow data model. |
| 193 | * @param data workflow data model |
| 194 | * @return builder |
| 195 | */ |
| 196 | public Builder data(JsonNode data) { |
| 197 | this.data = data; |
| 198 | return this; |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * Builds workflow description from builder. |
| 203 | * @return instance of workflow description |
| 204 | */ |
| 205 | public DefaultWorkflowDescription build() { |
| 206 | return new DefaultWorkflowDescription(this); |
| 207 | } |
| 208 | } |
| 209 | } |