restconf/sal-rest-connector/src/main/java/org/opendaylight/restconf/rest/impl/services/RestconfStreamsServiceImpl.java

   1 /*
   2  * Copyright (c) 2016 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.restconf.rest.impl.services;
   9
  10 import com.google.common.base.Preconditions;
  11 import java.util.Set;
  12 import javax.ws.rs.core.UriInfo;
  13 import org.opendaylight.netconf.sal.restconf.impl.InstanceIdentifierContext;
  14 import org.opendaylight.netconf.sal.restconf.impl.NormalizedNodeContext;
  15 import org.opendaylight.netconf.sal.streams.listeners.Notificator;
  16 import org.opendaylight.restconf.Draft11;
  17 import org.opendaylight.restconf.rest.api.schema.context.SchemaContextHandler;
  18 import org.opendaylight.restconf.rest.api.services.RestconfStreamsService;
  19 import org.opendaylight.restconf.utils.mapping.RestconfMappingNodeUtil;
  20 import org.opendaylight.restconf.utils.schema.context.RestconfSchemaUtil;
  21 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  22 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  23 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  24 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
  25 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
  26 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.CollectionNodeBuilder;
  27 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.DataContainerNodeAttrBuilder;
  28 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
  29 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
  30 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
  31 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  32
  33 /**
  34  * Implementation of {@link RestconfStreamsService}
  35  *
  36  */
  37 public class RestconfStreamsServiceImpl implements RestconfStreamsService {
  38
  39     private final SchemaContextHandler schemaContextHandler;
  40
  41     /**
  42      * Set {@link SchemaContextHandler} for getting actual {@link SchemaContext}
  43      * .
  44      *
  45      * @param schemaContextHandler
  46      *            - handling schema context
  47      */
  48     public RestconfStreamsServiceImpl(final SchemaContextHandler schemaContextHandler) {
  49         this.schemaContextHandler = schemaContextHandler;
  50     }
  51
  52     @Override
  53     public NormalizedNodeContext getAvailableStreams(final UriInfo uriInfo) {
  54         final SchemaContextRef schemaContextRef = new SchemaContextRef(this.schemaContextHandler.getSchemaContext());
  55         final Set<String> availableStreams = Notificator.getStreamNames();
  56
  57         final DataSchemaNode streamListSchemaNode = RestconfSchemaUtil.getRestconfSchemaNode(
  58                 schemaContextRef.getRestconfModule(), Draft11.MonitoringModule.STREAM_LIST_SCHEMA_NODE);
  59         Preconditions.checkState(streamListSchemaNode instanceof ListSchemaNode);
  60         final CollectionNodeBuilder<MapEntryNode, MapNode> listStreamBuilder = Builders
  61                 .mapBuilder((ListSchemaNode) streamListSchemaNode);
  62
  63         for (final String streamValue : availableStreams) {
  64             listStreamBuilder.withChild(RestconfMappingNodeUtil.toStreamEntryNode(streamValue, streamListSchemaNode));
  65         }
  66
  67         final DataSchemaNode streamContSchemaNode = RestconfSchemaUtil.getRestconfSchemaNode(
  68                 schemaContextRef.getRestconfModule(), Draft11.MonitoringModule.STREAMS_CONTAINER_SCHEMA_NODE);
  69         Preconditions.checkState(streamContSchemaNode instanceof ContainerSchemaNode);
  70         final DataContainerNodeAttrBuilder<NodeIdentifier, ContainerNode> streamsContainerBuilder = Builders
  71                 .containerBuilder((ContainerSchemaNode) streamContSchemaNode);
  72
  73         streamsContainerBuilder.withChild(listStreamBuilder.build());
  74
  75         return new NormalizedNodeContext(
  76                 new InstanceIdentifierContext<>(null, streamContSchemaNode, null, schemaContextRef.get()),
  77                 streamsContainerBuilder.build());
  78     }
  79 }