| /* |
| * 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.google.common.base.Strings; |
| import org.apache.felix.scr.annotations.Activate; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Deactivate; |
| import org.apache.felix.scr.annotations.Modified; |
| import org.apache.felix.scr.annotations.Property; |
| import org.apache.felix.scr.annotations.Reference; |
| import org.apache.felix.scr.annotations.ReferenceCardinality; |
| import org.apache.felix.scr.annotations.Service; |
| import org.onlab.util.Tools; |
| import org.onosproject.cfg.ComponentConfigService; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.net.config.ConfigFactory; |
| import org.onosproject.net.config.NetworkConfigEvent; |
| import org.onosproject.net.config.NetworkConfigListener; |
| import org.onosproject.net.config.NetworkConfigRegistry; |
| import org.onosproject.net.config.basics.SubjectFactories; |
| import org.onosproject.xosclient.api.VtnServiceApi; |
| import org.onosproject.xosclient.api.XosAccess; |
| import org.onosproject.xosclient.api.XosAccessConfig; |
| import org.onosproject.xosclient.api.XosClientService; |
| import org.osgi.service.component.ComponentContext; |
| import org.slf4j.Logger; |
| |
| import java.util.Dictionary; |
| |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| /** |
| * Provides interactions with XOS. |
| */ |
| @Component(immediate = true) |
| @Service |
| public class XosClient implements XosClientService { |
| |
| protected final Logger log = getLogger(getClass()); |
| |
| private static final String VTN_BASE_URL = "vtnBaseUrl"; |
| private static final String DEFAULT_VTN_BASE_URL = "/api/service/vtn/services/"; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ComponentConfigService componentConfigService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected NetworkConfigRegistry configRegistry; |
| |
| @Property(name = VTN_BASE_URL, value = DEFAULT_VTN_BASE_URL, |
| label = "XOS VTN service API base url") |
| private String vtnBaseUrl = DEFAULT_VTN_BASE_URL; |
| |
| private final ConfigFactory configFactory = |
| new ConfigFactory(SubjectFactories.APP_SUBJECT_FACTORY, XosAccessConfig.class, "xosclient") { |
| @Override |
| public XosAccessConfig createConfig() { |
| return new XosAccessConfig(); |
| } |
| }; |
| |
| private final NetworkConfigListener configListener = new InternalConfigListener(); |
| |
| private ApplicationId appId; |
| private XosAccess access = null; |
| |
| @Activate |
| protected void activate(ComponentContext context) { |
| appId = coreService.registerApplication("org.onosproject.xosclient"); |
| |
| componentConfigService.registerProperties(getClass()); |
| modified(context); |
| |
| configRegistry.registerConfigFactory(configFactory); |
| configRegistry.addListener(configListener); |
| |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| protected void deactivate() { |
| log.info("Stopped"); |
| } |
| |
| @Modified |
| protected void modified(ComponentContext context) { |
| Dictionary<?, ?> properties = context.getProperties(); |
| |
| String updatedUrl = Tools.get(properties, VTN_BASE_URL); |
| if (!Strings.isNullOrEmpty(updatedUrl)) { |
| vtnBaseUrl = updatedUrl; |
| } |
| |
| log.info("Modified"); |
| } |
| |
| @Override |
| public XosAccess access() { |
| return access; |
| } |
| |
| @Override |
| public synchronized boolean setAccess(XosAccess xosAccess) { |
| checkNotNull(xosAccess); |
| |
| // TODO authentication later before using the access |
| access = xosAccess; |
| return true; |
| } |
| |
| @Override |
| public VtnServiceApi vtnServiceApi() { |
| checkNotNull(access, "XOS API access is not set"); |
| return DefaultVtnServiceApi.getInstance(vtnBaseUrl, access); |
| } |
| |
| /* |
| * adds more XOS service APIs below. |
| */ |
| |
| private void readConfiguration() { |
| XosAccessConfig config = configRegistry.getConfig(appId, XosAccessConfig.class); |
| if (config == null) { |
| log.debug("No configuration found"); |
| return; |
| } |
| |
| setAccess(config.xosAccess()); |
| } |
| |
| private class InternalConfigListener implements NetworkConfigListener { |
| |
| @Override |
| public void event(NetworkConfigEvent event) { |
| if (!event.configClass().equals(XosAccessConfig.class)) { |
| return; |
| } |
| |
| switch (event.type()) { |
| case CONFIG_ADDED: |
| case CONFIG_UPDATED: |
| log.info("Network configuration changed"); |
| readConfiguration(); |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| } |