restconf/restconf-client-impl/src/main/java/org/opendaylight/yangtools/restconf/client/AbstractDataStore.java

   1 /*
   2  * Copyright (c) 2014, 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.yangtools.restconf.client;
  10
  11 import com.google.common.base.Function;
  12 import com.google.common.base.Optional;
  13 import com.google.common.util.concurrent.ListenableFuture;
  14 import com.sun.jersey.api.client.ClientResponse;
  15 import java.io.InputStream;
  16 import java.util.Map.Entry;
  17 import org.opendaylight.yangtools.binding.data.codec.impl.BindingNormalizedNodeCodecRegistry;
  18 import org.opendaylight.yangtools.restconf.client.api.data.Datastore;
  19 import org.opendaylight.yangtools.restconf.client.api.data.DefaultRetrievalStrategy;
  20 import org.opendaylight.yangtools.restconf.client.api.data.RetrievalStrategy;
  21 import org.opendaylight.yangtools.restconf.utils.RestconfUtils;
  22 import org.opendaylight.yangtools.yang.binding.DataObject;
  23 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  24 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  25 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
  26 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  27
  28 public abstract class AbstractDataStore implements Datastore {
  29
  30     private final RestconfClientImpl client;
  31     private static final int STATUS_OK = 200;
  32     private static final int STATUS_NOT_FOUND = 404;
  33
  34     public AbstractDataStore(RestconfClientImpl client) {
  35         super();
  36         this.client = client;
  37     }
  38
  39     protected RestconfClientImpl getClient() {
  40         return client;
  41     }
  42
  43     @Override
  44     public <T extends DataObject> ListenableFuture<Optional<T>> readData(InstanceIdentifier<T> path) {
  45         return readData(path, DefaultRetrievalStrategy.getInstance());
  46     }
  47
  48     @Override
  49     public <T extends DataObject> ListenableFuture<Optional<T>> readData(final InstanceIdentifier<T> path,
  50             RetrievalStrategy strategy) {
  51
  52         final SchemaContext schemaContext = client.getSchemaContext();
  53         final BindingNormalizedNodeCodecRegistry mappingService = client.getMappingService();
  54         final YangInstanceIdentifier domPath = mappingService.toYangInstanceIdentifier(path);
  55         final Entry<String, DataSchemaNode> pathWithSchema = RestconfUtils.toRestconfIdentifier(domPath,schemaContext);
  56         String restconfPath = getStorePrefix() + pathWithSchema.getKey();
  57
  58         return client.get(restconfPath, "application/xml",new Function<ClientResponse, Optional<T>>() {
  59
  60             @SuppressWarnings("unchecked")
  61             @Override
  62             public com.google.common.base.Optional<T> apply(ClientResponse response) {
  63               switch (response.getStatus()) {
  64                 case STATUS_OK:
  65                   DataObject dataObject = deserialize(domPath,response.getEntityInputStream());
  66                   return (Optional<T>) Optional.of(dataObject);
  67                 case STATUS_NOT_FOUND:
  68                   return Optional.<T> absent();
  69                 default:
  70                   throw new IllegalStateException("Failed : HTTP error code : " + response.getStatus());
  71                 }
  72             }
  73
  74
  75         });
  76     }
  77
  78     protected final DataObject deserialize(YangInstanceIdentifier domPath, InputStream entityInputStream) {
  79         throw new UnsupportedOperationException("Not implemented yet.");
  80     }
  81
  82     protected abstract String getStorePrefix();
  83
  84 }