| /* |
| * Copyright 2016-present Open Networking Laboratory |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.onosproject.xosclient.impl; |
| |
| import com.fasterxml.jackson.databind.JsonNode; |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import com.google.common.base.Strings; |
| import com.google.common.collect.Sets; |
| import org.onosproject.xosclient.api.VtnServiceApi; |
| import org.onosproject.xosclient.api.XosAccess; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| /** |
| * Provides CORD VTN service and service dependency APIs. |
| */ |
| public final class DefaultVtnServiceApi extends XosApi implements VtnServiceApi { |
| |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| private static DefaultVtnServiceApi instance = null; |
| |
| /** |
| * Default constructor. |
| */ |
| private DefaultVtnServiceApi(String baseUrl, XosAccess access) { |
| super(baseUrl, access); |
| } |
| |
| /** |
| * Returns VTN service API instance. Creates a new instance only if base url or |
| * access has been changed. |
| * |
| * @param baseUrl base url |
| * @param access access |
| * @return vtn service api |
| */ |
| public static synchronized DefaultVtnServiceApi getInstance(String baseUrl, XosAccess access) { |
| checkNotNull(access, "XOS access information is null"); |
| checkArgument(!Strings.isNullOrEmpty(baseUrl), "VTN service API base url is null or empty"); |
| |
| if (instance == null || |
| !instance.baseUrl.equals(baseUrl) || |
| !instance.access.equals(access)) { |
| instance = new DefaultVtnServiceApi(baseUrl, access); |
| } |
| return instance; |
| } |
| |
| @Override |
| public Set<String> services() { |
| String response = restGet(EMPTY_STRING); |
| log.trace("Get services {}", response); |
| |
| ObjectMapper mapper = new ObjectMapper(); |
| try { |
| JsonNode nodes = mapper.readTree(response); |
| return Sets.newHashSet(nodes.fieldNames()); |
| } catch (IOException e) { |
| log.warn("Failed to get service list"); |
| return Sets.newHashSet(); |
| } |
| } |
| |
| @Override |
| public Set<String> getProviderServices(String tServiceId) { |
| checkNotNull(tServiceId); |
| |
| String response = restGet(tServiceId); |
| log.trace("Get provider services {}", response); |
| |
| ObjectMapper mapper = new ObjectMapper(); |
| Set<String> pServices = Sets.newHashSet(); |
| |
| try { |
| JsonNode nodes = mapper.readTree(response); |
| nodes.forEach(node -> pServices.add(node.asText())); |
| } catch (IOException e) { |
| log.warn("Failed to get service dependency"); |
| } |
| return pServices; |
| } |
| |
| @Override |
| public Set<String> getTenantServices(String tServiceId) { |
| checkNotNull(tServiceId); |
| |
| String response = restGet(EMPTY_STRING); |
| log.trace("Get tenant services {}", response); |
| |
| ObjectMapper mapper = new ObjectMapper(); |
| Set<String> tServices = Sets.newHashSet(); |
| try { |
| JsonNode nodes = mapper.readTree(response); |
| Iterator<Map.Entry<String, JsonNode>> iterator = nodes.fields(); |
| |
| while (iterator.hasNext()) { |
| Map.Entry<String, JsonNode> entry = iterator.next(); |
| entry.getValue().forEach(pService -> { |
| if (pService.asText().equals(tServiceId)) { |
| tServices.add(entry.getKey()); |
| } |
| }); |
| } |
| } catch (IOException e) { |
| log.warn("Failed to get service list"); |
| } |
| return tServices; |
| } |
| } |