opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/schema/repository/impl/RemoteSchemaProvider.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.cluster.schema.repository.impl;
  10
  11 import akka.dispatch.OnComplete;
  12 import com.google.common.annotations.Beta;
  13 import com.google.common.util.concurrent.CheckedFuture;
  14 import com.google.common.util.concurrent.Futures;
  15 import com.google.common.util.concurrent.SettableFuture;
  16 import org.opendaylight.controller.cluster.schema.repository.RemoteYangTextSourceProvider;
  17 import org.opendaylight.yangtools.util.concurrent.ExceptionMapper;
  18 import org.opendaylight.yangtools.yang.model.repo.api.SchemaSourceException;
  19 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
  20 import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
  21 import org.opendaylight.yangtools.yang.model.repo.spi.SchemaSourceProvider;
  22 import org.slf4j.Logger;
  23 import org.slf4j.LoggerFactory;
  24 import scala.concurrent.ExecutionContext;
  25 import scala.concurrent.Future;
  26
  27 /**
  28  * Provides schema sources from {@link RemoteYangTextSourceProvider}.
  29  */
  30 @Beta
  31 public class RemoteSchemaProvider implements SchemaSourceProvider<YangTextSchemaSource> {
  32
  33     private static final Logger LOG = LoggerFactory.getLogger(RemoteSchemaProvider.class);
  34
  35     private final RemoteYangTextSourceProvider remoteRepo;
  36     private final ExecutionContext executionContext;
  37
  38     private static final ExceptionMapper<SchemaSourceException> MAPPER = new ExceptionMapper<SchemaSourceException>(
  39             "schemaDownload", SchemaSourceException.class) {
  40         @Override
  41         protected SchemaSourceException newWithCause(final String s, final Throwable throwable) {
  42             return new SchemaSourceException(s, throwable);
  43         }
  44     };
  45
  46     public RemoteSchemaProvider(RemoteYangTextSourceProvider remoteRepo, ExecutionContext executionContext) {
  47         this.remoteRepo = remoteRepo;
  48         this.executionContext = executionContext;
  49     }
  50
  51     @Override
  52     public CheckedFuture<YangTextSchemaSource, SchemaSourceException> getSource(SourceIdentifier sourceIdentifier) {
  53         LOG.trace("Getting yang schema source for {}", sourceIdentifier.getName());
  54
  55         Future<YangTextSchemaSourceSerializationProxy> result = remoteRepo.getYangTextSchemaSource(sourceIdentifier);
  56
  57         final SettableFuture<YangTextSchemaSource> res = SettableFuture.create();
  58         result.onComplete(new OnComplete<YangTextSchemaSourceSerializationProxy>() {
  59             @Override
  60             public void onComplete(Throwable throwable, YangTextSchemaSourceSerializationProxy yangTextSchemaSourceSerializationProxy) {
  61                 if(yangTextSchemaSourceSerializationProxy != null) {
  62                     res.set(yangTextSchemaSourceSerializationProxy.getRepresentation());
  63                 }
  64                 if(throwable != null) {
  65                     res.setException(throwable);
  66                 }
  67             }
  68
  69         }, executionContext);
  70
  71         return Futures.makeChecked(res, MAPPER);
  72     }
  73 }