restconf/restconf-nb-rfc8040/src/main/java/org/opendaylight/restconf/nb/rfc8040/rests/services/impl/RestconfImpl.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.nb.rfc8040.rests.services.impl;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import javax.ws.rs.Path;
  13 import org.opendaylight.restconf.common.context.InstanceIdentifierContext;
  14 import org.opendaylight.restconf.nb.rfc8040.Rfc8040.IetfYangLibrary;
  15 import org.opendaylight.restconf.nb.rfc8040.handlers.SchemaContextHandler;
  16 import org.opendaylight.restconf.nb.rfc8040.legacy.NormalizedNodePayload;
  17 import org.opendaylight.restconf.nb.rfc8040.rests.services.api.RestconfService;
  18 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.restconf.rev170126.Restconf;
  19 import org.opendaylight.yangtools.yang.common.QName;
  20 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
  21 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
  22 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
  23 import org.opendaylight.yangtools.yang.model.api.GroupingDefinition;
  24 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
  25
  26 @Path("/")
  27 public class RestconfImpl implements RestconfService {
  28     private static final QName YANG_LIBRARY_VERSION = QName.create(Restconf.QNAME, "yang-library-version").intern();
  29
  30     private final SchemaContextHandler schemaContextHandler;
  31
  32     public RestconfImpl(final SchemaContextHandler schemaContextHandler) {
  33         this.schemaContextHandler = requireNonNull(schemaContextHandler);
  34     }
  35
  36     @Override
  37     public NormalizedNodePayload getLibraryVersion() {
  38         final EffectiveModelContext context = schemaContextHandler.get();
  39
  40         // FIXME: why are we going through a grouping here?!
  41         final GroupingDefinition grouping = context
  42             .findModule(Restconf.QNAME.getModule())
  43             .orElseThrow(() -> new IllegalStateException("Failed to find restcibf module"))
  44             .getGroupings().stream()
  45             .filter(grp -> Restconf.QNAME.equals(grp.getQName()))
  46             .findFirst()
  47             .orElseThrow(() -> new IllegalStateException("Failed to find restconf grouping"));
  48
  49         final LeafSchemaNode schemaNode =
  50             (LeafSchemaNode) ((ContainerSchemaNode) grouping.getDataChildByName(Restconf.QNAME))
  51             .getDataChildByName(YANG_LIBRARY_VERSION);
  52
  53         return NormalizedNodePayload.of(InstanceIdentifierContext.ofDataSchemaNode(context, schemaNode, null),
  54             ImmutableNodes.leafNode(YANG_LIBRARY_VERSION, IetfYangLibrary.REVISION.toString()));
  55     }
  56 }