pce/src/main/java/org/opendaylight/transportpce/pce/gnpy/ServiceDataStoreOperationsImpl.java

   1 /*
   2  * Copyright © 2018 Orange, 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.transportpce.pce.gnpy;
  10
  11 import com.google.common.base.Function;
  12 import com.google.common.collect.FluentIterable;
  13
  14 import java.io.BufferedWriter;
  15 import java.io.FileWriter;
  16 import java.io.IOException;
  17 import java.io.StringWriter;
  18 import java.io.Writer;
  19 import java.util.Collections;
  20 import java.util.Optional;
  21
  22 import javassist.ClassPool;
  23
  24 import org.opendaylight.mdsal.binding.dom.codec.gen.impl.StreamWriterGenerator;
  25 import org.opendaylight.mdsal.binding.dom.codec.impl.BindingNormalizedNodeCodecRegistry;
  26 import org.opendaylight.mdsal.binding.generator.impl.ModuleInfoBackedContext;
  27 import org.opendaylight.mdsal.binding.generator.util.BindingRuntimeContext;
  28 import org.opendaylight.mdsal.binding.generator.util.JavassistUtils;
  29 import org.opendaylight.mdsal.binding.spec.reflect.BindingReflections;
  30 import org.opendaylight.transportpce.common.DataStoreContext;
  31 import org.opendaylight.transportpce.common.converter.XMLDataObjectConverter;
  32 import org.opendaylight.transportpce.common.network.NetworkTransactionService;
  33 import org.opendaylight.yang.gen.v1.http.org.openroadm.device.rev170206.org.openroadm.device.container.OrgOpenroadmDevice;
  34 import org.opendaylight.yangtools.yang.binding.BindingStreamEventWriter;
  35 import org.opendaylight.yangtools.yang.binding.DataObject;
  36 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  37 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.PathArgument;
  38 import org.opendaylight.yangtools.yang.binding.YangModuleInfo;
  39 import org.opendaylight.yangtools.yang.common.QName;
  40 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  41 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
  42 import org.opendaylight.yangtools.yang.data.codec.gson.JSONCodecFactorySupplier;
  43 import org.opendaylight.yangtools.yang.data.codec.gson.JSONNormalizedNodeStreamWriter;
  44 import org.opendaylight.yangtools.yang.data.codec.gson.JsonWriterFactory;
  45 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  46 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  47 import org.opendaylight.yangtools.yang.model.parser.api.YangSyntaxErrorException;
  48 import org.opendaylight.yangtools.yang.parser.spi.meta.ReactorException;
  49 import org.slf4j.Logger;
  50 import org.slf4j.LoggerFactory;
  51
  52 public class ServiceDataStoreOperationsImpl implements ServiceDataStoreOperations {
  53
  54     private static final Logger LOG = LoggerFactory.getLogger(ServiceDataStoreOperationsImpl.class);
  55
  56     public ServiceDataStoreOperationsImpl(NetworkTransactionService networkTransactionService) {
  57     }
  58
  59     public void createXMLFromDevice(DataStoreContext dataStoreContextUtil, OrgOpenroadmDevice device, String output) {
  60         if (device != null) {
  61             Optional<NormalizedNode<?, ?>> transformIntoNormalizedNode = null;
  62             XMLDataObjectConverter cwDsU = XMLDataObjectConverter.createWithDataStoreUtil(dataStoreContextUtil);
  63             transformIntoNormalizedNode = cwDsU.toNormalizedNodes(device, OrgOpenroadmDevice.class);
  64             if (!transformIntoNormalizedNode.isPresent()) {
  65                 throw new IllegalStateException(
  66                         String.format("Could not transform the input %s into normalized nodes", device));
  67             }
  68             Writer writerFromDataObject =
  69                 cwDsU.writerFromDataObject(device, OrgOpenroadmDevice.class,cwDsU.dataContainer());
  70             try {
  71                 BufferedWriter writer = new BufferedWriter(new FileWriter(output));
  72                 writer.write(writerFromDataObject.toString());
  73                 writer.close();
  74             } catch (IOException e) {
  75                 LOG.error("Bufferwriter error ");
  76             }
  77             LOG.debug("GNPy: device xml : {}", writerFromDataObject.toString());
  78         }
  79     }
  80
  81     public String createJsonStringFromDataObject(final InstanceIdentifier<?> id, DataObject object) throws Exception {
  82
  83         // See this link for more info :
  84         // https://github.com/opendaylight/fpc/blob/master/impl/src/main/java/org/opendaylight/fpc/utils/FpcCodecUtils.java
  85         final SchemaPath scPath = SchemaPath
  86                 .create(FluentIterable.from(id.getPathArguments()).transform(new Function<PathArgument, QName>() {
  87                     @Override
  88                     public QName apply(final PathArgument input) {
  89                         return BindingReflections.findQName(input.getType());
  90                     }
  91                 }), true);
  92         final Writer writer = new StringWriter();
  93         NormalizedNodeStreamWriter domWriter;
  94
  95         try {
  96             // Prepare the variables
  97             final ModuleInfoBackedContext moduleContext = ModuleInfoBackedContext.create();
  98             Iterable<? extends YangModuleInfo> moduleInfos = Collections
  99                     .singleton(BindingReflections.getModuleInfo(object.getClass()));
 100             moduleContext.addModuleInfos(moduleInfos);
 101             SchemaContext schemaContext = moduleContext.tryToCreateSchemaContext().get();
 102             BindingRuntimeContext bindingContext;
 103             bindingContext = BindingRuntimeContext.create(moduleContext, schemaContext);
 104             final BindingNormalizedNodeCodecRegistry bindingStreamCodecs = new BindingNormalizedNodeCodecRegistry(
 105                     StreamWriterGenerator.create(JavassistUtils.forClassPool(ClassPool.getDefault())));
 106             bindingStreamCodecs.onBindingRuntimeContextUpdated(bindingContext);
 107             BindingNormalizedNodeCodecRegistry codecRegistry = bindingStreamCodecs;
 108
 109             /*
 110              * This function needs : - context - scPath.getParent() -
 111              * scPath.getLastComponent().getNamespace(), -
 112              * JsonWriterFactory.createJsonWriter(writer)
 113              */
 114             domWriter = JSONNormalizedNodeStreamWriter.createExclusiveWriter(
 115                 JSONCodecFactorySupplier.DRAFT_LHOTKA_NETMOD_YANG_JSON_02.createSimple(schemaContext),
 116                 scPath.getParent(), scPath.getLastComponent().getNamespace(),
 117                 JsonWriterFactory.createJsonWriter(writer, 2));
 118             // The write part
 119             final BindingStreamEventWriter bindingWriter = codecRegistry.newWriter(id, domWriter);
 120             codecRegistry.getSerializer(id.getTargetType()).serialize(object, bindingWriter);
 121             writer.close();
 122         } catch (IOException e) {
 123             LOG.error("GNPy: writer error ");
 124         } catch (YangSyntaxErrorException e) {
 125             LOG.warn("GNPy: exception {} occured during json file creation", e.getMessage(), e);
 126         } catch (ReactorException e) {
 127             LOG.warn("GNPy: exception {} occured during json file creation", e.getMessage(), e);
 128         }
 129         return writer.toString();
 130     }
 131
 132     // Write the json as a string in a file
 133     public void writeStringFile(String jsonString, String fileName) {
 134         try {
 135             FileWriter file = new FileWriter(fileName);
 136             file.write(jsonString);
 137             file.close();
 138         } catch (IOException e) {
 139             LOG.error("GNPy: writer error ");
 140         }
 141     }
 142 }