yanglib/mdsal-yanglib-rfc8525/src/main/java/org/opendaylight/mdsal/yanglib/rfc8525/YangLibrarySupportFactory.java

   1 /*
   2  * Copyright (c) 2019 PANTHEON.tech s.r.o. 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.mdsal.yanglib.rfc8525;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.annotations.Beta;
  13 import java.util.ServiceLoader;
  14 import org.eclipse.jdt.annotation.NonNullByDefault;
  15 import org.kohsuke.MetaInfServices;
  16 import org.opendaylight.mdsal.binding.dom.codec.api.BindingCodecTreeFactory;
  17 import org.opendaylight.mdsal.binding.runtime.api.BindingRuntimeGenerator;
  18 import org.opendaylight.mdsal.yanglib.api.YangLibSupport;
  19 import org.opendaylight.mdsal.yanglib.api.YangLibSupportFactory;
  20 import org.opendaylight.yangtools.yang.parser.api.YangParserException;
  21 import org.opendaylight.yangtools.yang.parser.api.YangParserFactory;
  22
  23 @Beta
  24 @MetaInfServices
  25 @NonNullByDefault
  26 public final class YangLibrarySupportFactory implements YangLibSupportFactory {
  27     private final BindingCodecTreeFactory codecFactory;
  28     private final BindingRuntimeGenerator generator;
  29
  30     public YangLibrarySupportFactory() {
  31         this(load(BindingRuntimeGenerator.class), load(BindingCodecTreeFactory.class));
  32     }
  33
  34     public YangLibrarySupportFactory(final BindingRuntimeGenerator generator,
  35             final BindingCodecTreeFactory codecFactory) {
  36         this.generator = requireNonNull(generator);
  37         this.codecFactory = requireNonNull(codecFactory);
  38     }
  39
  40     @Override
  41     public YangLibSupport createYangLibSupport(final YangParserFactory parserFactory) throws YangParserException {
  42         return new YangLibrarySupport(parserFactory, generator, codecFactory);
  43     }
  44
  45     private static <T> T load(final Class<T> clazz) {
  46         return ServiceLoader.load(clazz).findFirst()
  47                 .orElseThrow(() -> new IllegalStateException("Failed to find a " + clazz.getSimpleName() + " service"));
  48     }
  49 }