opendaylight/netconf/config-netconf-connector/src/main/java/org/opendaylight/controller/netconf/confignetconfconnector/mapping/config/ServiceRegistryWrapper.java

   1 /*
   2  * Copyright (c) 2013 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 package org.opendaylight.controller.netconf.confignetconfconnector.mapping.config;
   9
  10 import com.google.common.annotations.VisibleForTesting;
  11 import com.google.common.base.Preconditions;
  12 import com.google.common.collect.Maps;
  13 import com.google.common.collect.Sets;
  14 import org.opendaylight.controller.config.api.ServiceReferenceReadableRegistry;
  15 import org.opendaylight.yangtools.yang.common.QName;
  16
  17 import javax.management.InstanceNotFoundException;
  18 import javax.management.ObjectName;
  19 import java.util.Collection;
  20 import java.util.Collections;
  21 import java.util.Map;
  22 import java.util.Set;
  23
  24 public class ServiceRegistryWrapper {
  25
  26     private ServiceReferenceReadableRegistry configServiceRefRegistry;
  27
  28     private long suffix = 1;
  29
  30     public ServiceRegistryWrapper(ServiceReferenceReadableRegistry configServiceRefRegistry) {
  31         this.configServiceRefRegistry = configServiceRefRegistry;
  32     }
  33
  34
  35     public boolean hasRefName(String namespace, String serviceName, ObjectName on) {
  36         String qname = configServiceRefRegistry.getServiceInterfaceName(namespace, serviceName);
  37         Map<String, ObjectName> forQName = configServiceRefRegistry.getServiceMapping().get(qname);
  38         if(forQName==null) return false;
  39         return forQName.values().contains(on);
  40     }
  41
  42     public ObjectName getByServiceAndRefName(String namespace, String serviceName, String refName) {
  43         Map<String, Map<String, String>> serviceNameToRefNameToInstance = getMappedServices().get(namespace);
  44
  45         Preconditions.checkArgument(serviceNameToRefNameToInstance != null, "No serviceInstances mapped to " + namespace);
  46
  47         Map<String, String> refNameToInstance = serviceNameToRefNameToInstance.get(serviceName);
  48         Preconditions.checkArgument(refNameToInstance != null, "No serviceInstances mapped to " + serviceName + " , "
  49                 + serviceNameToRefNameToInstance.keySet());
  50
  51         String instanceId = refNameToInstance.get(refName);
  52         Preconditions.checkArgument(instanceId != null, "No serviceInstances mapped to " + serviceName + ":"
  53                 + refName + ", " + serviceNameToRefNameToInstance.keySet());
  54
  55         Services.ServiceInstance serviceInstance = Services.ServiceInstance.fromString(instanceId);
  56         Preconditions.checkArgument(serviceInstance != null, "No serviceInstance mapped to " + refName
  57                 + " under service name " + serviceName + " , " + refNameToInstance.keySet());
  58
  59         String qNameOfService = configServiceRefRegistry.getServiceInterfaceName(namespace, serviceName);
  60         try {
  61             return configServiceRefRegistry.getServiceReference(qNameOfService, refName);
  62         } catch (InstanceNotFoundException e) {
  63             throw new IllegalArgumentException("No serviceInstance mapped to " + refName
  64                     + " under service name " + serviceName + " , " + refNameToInstance.keySet(), e);
  65
  66         }
  67     }
  68
  69     public Map<String, Map<String, Map<String, String>>> getMappedServices() {
  70         Map<String, Map<String, Map<String, String>>> retVal = Maps.newHashMap();
  71
  72         Map<String, Map<String, ObjectName>> serviceMapping = configServiceRefRegistry.getServiceMapping();
  73         for (String serviceQName : serviceMapping.keySet())
  74             for (String refName : serviceMapping.get(serviceQName).keySet()) {
  75
  76                 ObjectName on = serviceMapping.get(serviceQName).get(refName);
  77                 Services.ServiceInstance si = Services.ServiceInstance.fromObjectName(on);
  78
  79                 QName qname = QName.create(serviceQName);
  80                 String namespace = qname.getNamespace().toString();
  81                 Map<String, Map<String, String>> serviceToRefs = retVal.get(namespace);
  82                 if(serviceToRefs==null) {
  83                     serviceToRefs = Maps.newHashMap();
  84                     retVal.put(namespace, serviceToRefs);
  85                 }
  86
  87                 String localName = qname.getLocalName();
  88                 Map<String, String> refsToSis = serviceToRefs.get(localName);
  89                 if(refsToSis==null) {
  90                     refsToSis = Maps.newHashMap();
  91                     serviceToRefs.put(localName, refsToSis);
  92                 }
  93
  94                 Preconditions.checkState(refsToSis.containsKey(refName) == false,
  95                         "Duplicate reference name %s for service %s:%s, now for instance %s", refName, namespace,
  96                         localName, on);
  97                 refsToSis.put(refName, si.toString());
  98             }
  99
 100         return retVal;
 101     }
 102
 103     @VisibleForTesting
 104     public String getNewDefaultRefName(String namespace, String serviceName, String moduleName, String instanceName) {
 105         String refName;
 106         refName = "ref_" + instanceName;
 107
 108         Map<String, Map<String, String>> serviceNameToRefNameToInstance = getMappedServices().get(namespace);
 109
 110         Map<String, String> refNameToInstance;
 111         if(serviceNameToRefNameToInstance == null || serviceNameToRefNameToInstance.containsKey(serviceName) == false) {
 112             refNameToInstance = Collections.emptyMap();
 113         } else
 114             refNameToInstance = serviceNameToRefNameToInstance.get(serviceName);
 115
 116         final Set<String> refNamesAsSet = toSet(refNameToInstance.keySet());
 117         if (refNamesAsSet.contains(refName)) {
 118             refName = findAvailableRefName(refName, refNamesAsSet);
 119         }
 120
 121         return refName;
 122     }
 123
 124
 125     private Set<String> toSet(Collection<String> values) {
 126         Set<String> refNamesAsSet = Sets.newHashSet();
 127
 128         for (String refName : values) {
 129             boolean resultAdd = refNamesAsSet.add(refName);
 130             Preconditions.checkState(resultAdd,
 131                     "Error occurred building services element, reference name {} was present twice", refName);
 132         }
 133
 134         return refNamesAsSet;
 135     }
 136
 137     private String findAvailableRefName(String refName, Set<String> refNamesAsSet) {
 138         String intitialRefName = refName;
 139
 140         while (true) {
 141             refName = intitialRefName + "_" + suffix++;
 142             if (refNamesAsSet.contains(refName) == false)
 143                 return refName;
 144         }
 145     }
 146 }