opendaylight/config/config-manager-facade-xml/src/main/java/org/opendaylight/controller/config/facade/xml/mapping/config/Services.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.controller.config.facade.xml.mapping.config;
  10
  11
  12 import com.google.common.base.Optional;
  13 import com.google.common.base.Preconditions;
  14 import com.google.common.collect.Maps;
  15 import java.util.List;
  16 import java.util.Map;
  17 import java.util.Map.Entry;
  18 import java.util.regex.Matcher;
  19 import java.util.regex.Pattern;
  20 import javax.management.ObjectName;
  21 import org.opendaylight.controller.config.api.jmx.ObjectNameUtil;
  22 import org.opendaylight.controller.config.facade.xml.mapping.attributes.fromxml.ObjectNameAttributeReadingStrategy;
  23 import org.opendaylight.controller.config.util.xml.DocumentedException;
  24 import org.opendaylight.controller.config.util.xml.XmlElement;
  25 import org.opendaylight.controller.config.util.xml.XmlMappingConstants;
  26 import org.opendaylight.controller.config.util.xml.XmlUtil;
  27 import org.opendaylight.yangtools.yang.data.api.ModifyAction;
  28 import org.w3c.dom.Document;
  29 import org.w3c.dom.Element;
  30
  31 public final class Services {
  32
  33     private static final String EMPTY_PROVIDER = "";
  34     private static final String PROVIDER_KEY = "provider";
  35     private static final String NAME_KEY = "name";
  36     public static final String TYPE_KEY = "type";
  37     public static final String SERVICE_KEY = "service";
  38
  39     private final Map<String /*Namespace*/, Map<String/* ServiceName */, Map<String/* refName */, ServiceInstance>>> namespaceToServiceNameToRefNameToInstance = Maps
  40             .newHashMap();
  41
  42     /**
  43      *
  44      */
  45     public Map<String, Map<String, Map<String, ServiceInstance>>> getNamespaceToServiceNameToRefNameToInstance() {
  46         return namespaceToServiceNameToRefNameToInstance;
  47     }
  48
  49     private static Services resolveServices(Map<String, Map<String, Map<String, String>>> mappedServices) {
  50         Services tracker = new Services();
  51
  52         for (Entry<String, Map<String, Map<String, String>>> namespaceEntry : mappedServices.entrySet()) {
  53             String namespace = namespaceEntry.getKey();
  54
  55             for (Entry<String, Map<String, String>> serviceEntry : namespaceEntry.getValue().entrySet()) {
  56
  57                 String serviceName = serviceEntry.getKey();
  58                 for (Entry<String, String> refEntry : serviceEntry.getValue().entrySet()) {
  59
  60                     Map<String, Map<String, ServiceInstance>> namespaceToServices = tracker.namespaceToServiceNameToRefNameToInstance.get(namespace);
  61                     if (namespaceToServices == null) {
  62                         namespaceToServices = Maps.newHashMap();
  63                         tracker.namespaceToServiceNameToRefNameToInstance.put(namespace, namespaceToServices);
  64                     }
  65
  66                     Map<String, ServiceInstance> refNameToInstance = namespaceToServices
  67                             .get(serviceName);
  68                     if (refNameToInstance == null) {
  69                         refNameToInstance = Maps.newHashMap();
  70                         namespaceToServices.put(serviceName, refNameToInstance);
  71                     }
  72
  73                     String refName = refEntry.getKey();
  74                     //we want to compare reference not value of the provider
  75                     refNameToInstance.put(refName, refEntry.getValue() == EMPTY_PROVIDER
  76                             //provider name cannot be EMPTY_PROVIDER instance unless we are executing delete
  77                             ? ServiceInstance.EMPTY_SERVICE_INSTANCE
  78                             : ServiceInstance.fromString(refEntry.getValue()));
  79
  80                 }
  81             }
  82         }
  83         return tracker;
  84     }
  85
  86     // TODO support edit strategies on services
  87
  88     public static Services fromXml(XmlElement xml) throws DocumentedException {
  89         Map<String, Map<String, Map<String, String>>> retVal = Maps.newHashMap();
  90
  91         List<XmlElement> services = xml.getChildElements(SERVICE_KEY);
  92         xml.checkUnrecognisedElements(services);
  93
  94         for (XmlElement service : services) {
  95
  96             XmlElement typeElement = service.getOnlyChildElement(TYPE_KEY);
  97             Entry<String, String> prefixNamespace = typeElement.findNamespaceOfTextContent();
  98
  99             Preconditions.checkState(prefixNamespace.getKey()!=null && !prefixNamespace.getKey().equals(""), "Type attribute was not prefixed");
 100
 101             Map<String, Map<String, String>> namespaceToServices = retVal.get(prefixNamespace.getValue());
 102             if(namespaceToServices == null) {
 103                 namespaceToServices = Maps.newHashMap();
 104                 retVal.put(prefixNamespace.getValue(), namespaceToServices);
 105             }
 106
 107             String serviceName =  ObjectNameAttributeReadingStrategy
 108                 .checkPrefixAndExtractServiceName(typeElement, prefixNamespace);
 109
 110             Map<String, String> innerMap = namespaceToServices.get(serviceName);
 111             if (innerMap == null) {
 112                 innerMap = Maps.newHashMap();
 113                 namespaceToServices.put(serviceName, innerMap);
 114             }
 115
 116             List<XmlElement> instances = service.getChildElements(XmlMappingConstants.INSTANCE_KEY);
 117             service.checkUnrecognisedElements(instances, typeElement);
 118
 119             for (XmlElement instance : instances) {
 120                 XmlElement nameElement = instance.getOnlyChildElement(NAME_KEY);
 121                 String refName = nameElement.getTextContent();
 122
 123                 if (!ModifyAction.DELETE.toString().toLowerCase().equals(
 124                         instance.getAttribute(
 125                                 XmlMappingConstants.OPERATION_ATTR_KEY,
 126                                 XmlMappingConstants.URN_IETF_PARAMS_XML_NS_NETCONF_BASE_1_0)))
 127                 {
 128                     XmlElement providerElement = instance.getOnlyChildElement(PROVIDER_KEY);
 129                     String providerName = providerElement.getTextContent();
 130
 131                     instance.checkUnrecognisedElements(nameElement, providerElement);
 132
 133                     innerMap.put(refName, providerName);
 134                 } else {
 135                     //since this is a delete we dont have a provider name - we want empty service instance
 136                     innerMap.put(refName, EMPTY_PROVIDER);
 137                 }
 138             }
 139         }
 140
 141         return resolveServices(retVal);
 142     }
 143
 144     public static Element toXml(ServiceRegistryWrapper serviceRegistryWrapper, Document document) {
 145         final Optional<String> configNs = Optional.of(XmlMappingConstants.URN_OPENDAYLIGHT_PARAMS_XML_NS_YANG_CONTROLLER_CONFIG);
 146         Element root = XmlUtil.createElement(document, XmlMappingConstants.SERVICES_KEY, configNs);
 147
 148         Map<String, Map<String, Map<String, String>>> mappedServices = serviceRegistryWrapper.getMappedServices();
 149         for (Entry<String, Map<String, Map<String, String>>> namespaceToRefEntry : mappedServices.entrySet()) {
 150
 151             for (Entry<String, Map<String, String>> serviceEntry : namespaceToRefEntry.getValue().entrySet()) {
 152                 // service belongs to config.yang namespace
 153                 Element serviceElement = XmlUtil.createElement(document, SERVICE_KEY, configNs);
 154                 root.appendChild(serviceElement);
 155
 156                 // type belongs to config.yang namespace
 157                 String serviceType = serviceEntry.getKey();
 158                 Element typeElement = XmlUtil.createTextElementWithNamespacedContent(document, XmlMappingConstants.TYPE_KEY,
 159                         XmlMappingConstants.PREFIX, namespaceToRefEntry.getKey(), serviceType);
 160
 161                 serviceElement.appendChild(typeElement);
 162
 163                 for (Entry<String, String> instanceEntry : serviceEntry.getValue().entrySet()) {
 164                     Element instanceElement = XmlUtil.createElement(document, XmlMappingConstants.INSTANCE_KEY, Optional.<String>absent());
 165                     serviceElement.appendChild(instanceElement);
 166
 167                     Element nameElement = XmlUtil.createTextElement(document, NAME_KEY, instanceEntry.getKey(), Optional.<String>absent());
 168                     instanceElement.appendChild(nameElement);
 169
 170                     Element providerElement = XmlUtil.createTextElement(document, PROVIDER_KEY, instanceEntry.getValue(), Optional.<String>absent());
 171                     instanceElement.appendChild(providerElement);
 172                 }
 173             }
 174
 175         }
 176         return root;
 177     }
 178
 179     public static final class ServiceInstance {
 180         public static final ServiceInstance EMPTY_SERVICE_INSTANCE = new ServiceInstance("", "");
 181
 182         public ServiceInstance(String moduleName, String instanceName) {
 183             this.moduleName = moduleName;
 184             this.instanceName = instanceName;
 185         }
 186
 187         public static ServiceInstance fromString(String instanceId) {
 188             instanceId = instanceId.trim();
 189             Matcher matcher = p.matcher(instanceId);
 190             if(!matcher.matches()) {
 191                 matcher = pDeprecated.matcher(instanceId);
 192             }
 193
 194             Preconditions.checkArgument(matcher.matches(), "Unexpected format for provider, expected " + p.toString()
 195                     + " or " + pDeprecated.toString() + " but was " + instanceId);
 196
 197             String factoryName = matcher.group(1);
 198             String instanceName = matcher.group(2);
 199             return new ServiceInstance(factoryName, instanceName);
 200         }
 201
 202         private final String moduleName, instanceName;
 203         private String serviceName;
 204
 205         public String getServiceName() {
 206             return serviceName;
 207         }
 208
 209         public void setServiceName(String serviceName) {
 210             this.serviceName = serviceName;
 211         }
 212
 213         public String getModuleName() {
 214             return moduleName;
 215         }
 216
 217         public String getInstanceName() {
 218             return instanceName;
 219         }
 220
 221         private static final String blueprint = "/"
 222                 + XmlMappingConstants.MODULES_KEY + "/" + XmlMappingConstants.MODULE_KEY + "["
 223                 + XmlMappingConstants.TYPE_KEY + "='%s']["
 224                 + XmlMappingConstants.NAME_KEY + "='%s']";
 225
 226         // TODO unify with xpath in RuntimeRpc
 227
 228         // Previous version of xpath, needs to be supported for backwards compatibility (persisted configs by config-persister)
 229         private static final String blueprintRDeprecated = "/" + XmlMappingConstants.CONFIG_KEY + "/"
 230                 + XmlMappingConstants.MODULES_KEY + "/" + XmlMappingConstants.MODULE_KEY + "\\["
 231                 + XmlMappingConstants.NAME_KEY + "='%s'\\]/" + XmlMappingConstants.INSTANCE_KEY + "\\["
 232                 + XmlMappingConstants.NAME_KEY + "='%s'\\]";
 233
 234         private static final String blueprintR = "/"
 235                 + XmlMappingConstants.MODULES_KEY + "/" + XmlMappingConstants.MODULE_KEY + "\\["
 236                 + XmlMappingConstants.TYPE_KEY + "='%s'\\]\\["
 237                 + XmlMappingConstants.NAME_KEY + "='%s'\\]";
 238
 239         private static final Pattern pDeprecated = Pattern.compile(String.format(blueprintRDeprecated, "(.+)", "(.+)"));
 240         private static final Pattern p = Pattern.compile(String.format(blueprintR, "(.+)", "(.+)"));
 241
 242         @Override
 243         public String toString() {
 244             return String.format(blueprint, moduleName, instanceName);
 245         }
 246
 247         @Override
 248         public int hashCode() {
 249             final int prime = 31;
 250             int result = 1;
 251             result = prime * result + ((instanceName == null) ? 0 : instanceName.hashCode());
 252             result = prime * result + ((moduleName == null) ? 0 : moduleName.hashCode());
 253             return result;
 254         }
 255
 256         @Override
 257         public boolean equals(Object obj) {
 258             if (this == obj){
 259                 return true;
 260             }
 261             if (obj == null){
 262                 return false;
 263             }
 264             if (getClass() != obj.getClass()){
 265                 return false;
 266             }
 267             ServiceInstance other = (ServiceInstance) obj;
 268             if (instanceName == null) {
 269                 if (other.instanceName != null){
 270                     return false;
 271                 }
 272             } else if (!instanceName.equals(other.instanceName)){
 273                 return false;
 274             }
 275             if (moduleName == null) {
 276                 if (other.moduleName != null){
 277                     return false;
 278                 }
 279             } else if (!moduleName.equals(other.moduleName)){
 280                 return false;
 281             }
 282             return true;
 283         }
 284
 285         public ObjectName getObjectName(String transactionName) {
 286             return ObjectNameUtil.createTransactionModuleON(transactionName, moduleName, instanceName);
 287         }
 288
 289         public static ServiceInstance fromObjectName(ObjectName on) {
 290             return new ServiceInstance(ObjectNameUtil.getFactoryName(on), ObjectNameUtil.getInstanceName(on));
 291         }
 292     }
 293
 294 }