restconf/sal-rest-connector/src/main/java/org/opendaylight/netconf/sal/restconf/impl/JSONRestconfServiceImpl.java

   1 /*
   2  * Copyright (c) 2015 Brocade Communications 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.netconf.sal.restconf.impl;
   9
  10 import com.google.common.base.Optional;
  11 import com.google.common.base.Preconditions;
  12 import java.io.ByteArrayInputStream;
  13 import java.io.ByteArrayOutputStream;
  14 import java.io.IOException;
  15 import java.io.InputStream;
  16 import java.lang.annotation.Annotation;
  17 import java.nio.charset.StandardCharsets;
  18 import java.util.List;
  19 import javax.ws.rs.core.MediaType;
  20 import javax.ws.rs.core.UriInfo;
  21 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  22 import org.opendaylight.netconf.sal.rest.impl.JsonNormalizedNodeBodyReader;
  23 import org.opendaylight.netconf.sal.rest.impl.NormalizedNodeJsonBodyWriter;
  24 import org.opendaylight.netconf.sal.restconf.api.JSONRestconfService;
  25 import org.opendaylight.netconf.sal.restconf.impl.RestconfError.ErrorTag;
  26 import org.opendaylight.yangtools.yang.common.OperationFailedException;
  27 import org.opendaylight.yangtools.yang.common.RpcError;
  28 import org.opendaylight.yangtools.yang.common.RpcError.ErrorType;
  29 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 /**
  34  * Implementation of the JSONRestconfService interface.
  35  *
  36  * @author Thomas Pantelis
  37  */
  38 @Deprecated
  39 public class JSONRestconfServiceImpl implements JSONRestconfService, AutoCloseable {
  40     private final static Logger LOG = LoggerFactory.getLogger(JSONRestconfServiceImpl.class);
  41
  42     private static final Annotation[] EMPTY_ANNOTATIONS = new Annotation[0];
  43
  44     @Override
  45     public void put(final String uriPath, final String payload, final UriInfo uriInfo) throws OperationFailedException {
  46         Preconditions.checkNotNull(payload, "payload can't be null");
  47
  48         LOG.debug("put: uriPath: {}, payload: {}", uriPath, payload);
  49
  50         final InputStream entityStream = new ByteArrayInputStream(payload.getBytes(StandardCharsets.UTF_8));
  51         final NormalizedNodeContext context = JsonNormalizedNodeBodyReader.readFrom(uriPath, entityStream, false);
  52
  53         LOG.debug("Parsed YangInstanceIdentifier: {}", context.getInstanceIdentifierContext().getInstanceIdentifier());
  54         LOG.debug("Parsed NormalizedNode: {}", context.getData());
  55
  56         try {
  57             RestconfImpl.getInstance().updateConfigurationData(uriPath, context, uriInfo);
  58         } catch (final Exception e) {
  59             propagateExceptionAs(uriPath, e, "PUT");
  60         }
  61     }
  62
  63     @Override
  64     public void post(final String uriPath, final String payload, final UriInfo uriInfo)
  65             throws OperationFailedException {
  66         Preconditions.checkNotNull(payload, "payload can't be null");
  67
  68         LOG.debug("post: uriPath: {}, payload: {}", uriPath, payload);
  69
  70         final InputStream entityStream = new ByteArrayInputStream(payload.getBytes(StandardCharsets.UTF_8));
  71         final NormalizedNodeContext context = JsonNormalizedNodeBodyReader.readFrom(uriPath, entityStream, true);
  72
  73         LOG.debug("Parsed YangInstanceIdentifier: {}", context.getInstanceIdentifierContext().getInstanceIdentifier());
  74         LOG.debug("Parsed NormalizedNode: {}", context.getData());
  75
  76         try {
  77             RestconfImpl.getInstance().createConfigurationData(uriPath, context, uriInfo);
  78         } catch (final Exception e) {
  79             propagateExceptionAs(uriPath, e, "POST");
  80         }
  81     }
  82
  83     @Override
  84     public void delete(final String uriPath) throws OperationFailedException {
  85         LOG.debug("delete: uriPath: {}", uriPath);
  86
  87         try {
  88             RestconfImpl.getInstance().deleteConfigurationData(uriPath);
  89         } catch (final Exception e) {
  90             propagateExceptionAs(uriPath, e, "DELETE");
  91         }
  92     }
  93
  94     @Override
  95     public Optional<String> get(final String uriPath, final LogicalDatastoreType datastoreType) throws OperationFailedException {
  96         LOG.debug("get: uriPath: {}", uriPath);
  97
  98         try {
  99             NormalizedNodeContext readData;
 100             if(datastoreType == LogicalDatastoreType.CONFIGURATION) {
 101                 readData = RestconfImpl.getInstance().readConfigurationData(uriPath, null);
 102             } else {
 103                 readData = RestconfImpl.getInstance().readOperationalData(uriPath, null);
 104             }
 105
 106             final Optional<String> result = Optional.of(toJson(readData));
 107
 108             LOG.debug("get returning: {}", result.get());
 109
 110             return result;
 111         } catch (final Exception e) {
 112             if(!isDataMissing(e)) {
 113                 propagateExceptionAs(uriPath, e, "GET");
 114             }
 115
 116             LOG.debug("Data missing - returning absent");
 117             return Optional.absent();
 118         }
 119     }
 120
 121     @Override
 122     public Optional<String> invokeRpc(final String uriPath, final Optional<String> input) throws OperationFailedException {
 123         Preconditions.checkNotNull(uriPath, "uriPath can't be null");
 124
 125         final String actualInput = input.isPresent() ? input.get() : null;
 126
 127         LOG.debug("invokeRpc: uriPath: {}, input: {}", uriPath, actualInput);
 128
 129         String output = null;
 130         try {
 131             NormalizedNodeContext outputContext;
 132             if(actualInput != null) {
 133                 final InputStream entityStream = new ByteArrayInputStream(actualInput.getBytes(StandardCharsets.UTF_8));
 134                 final NormalizedNodeContext inputContext = JsonNormalizedNodeBodyReader.readFrom(uriPath, entityStream, true);
 135
 136                 LOG.debug("Parsed YangInstanceIdentifier: {}", inputContext.getInstanceIdentifierContext()
 137                         .getInstanceIdentifier());
 138                 LOG.debug("Parsed NormalizedNode: {}", inputContext.getData());
 139
 140                 outputContext = RestconfImpl.getInstance().invokeRpc(uriPath, inputContext, null);
 141             } else {
 142                 outputContext = RestconfImpl.getInstance().invokeRpc(uriPath, "", null);
 143             }
 144
 145             if(outputContext.getData() != null) {
 146                 output = toJson(outputContext);
 147             }
 148         } catch (final Exception e) {
 149             propagateExceptionAs(uriPath, e, "RPC");
 150         }
 151
 152         return Optional.fromNullable(output);
 153     }
 154
 155     @Override
 156     public void close() {
 157     }
 158
 159     private String toJson(final NormalizedNodeContext readData) throws IOException {
 160         final NormalizedNodeJsonBodyWriter writer = new NormalizedNodeJsonBodyWriter();
 161         final ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
 162         writer.writeTo(readData, NormalizedNodeContext.class, null, EMPTY_ANNOTATIONS,
 163                 MediaType.APPLICATION_JSON_TYPE, null, outputStream );
 164         return outputStream.toString(StandardCharsets.UTF_8.name());
 165     }
 166
 167     private boolean isDataMissing(final Exception e) {
 168         boolean dataMissing = false;
 169         if(e instanceof RestconfDocumentedException) {
 170             final RestconfDocumentedException rde = (RestconfDocumentedException)e;
 171             if(!rde.getErrors().isEmpty()) {
 172                 if(rde.getErrors().get(0).getErrorTag() == ErrorTag.DATA_MISSING) {
 173                     dataMissing = true;
 174                 }
 175             }
 176         }
 177
 178         return dataMissing;
 179     }
 180
 181     private static void propagateExceptionAs(final String uriPath, final Exception e, final String operation) throws OperationFailedException {
 182         LOG.debug("Error for uriPath: {}", uriPath, e);
 183
 184         if(e instanceof RestconfDocumentedException) {
 185             throw new OperationFailedException(String.format("%s failed for URI %s", operation, uriPath), e.getCause(),
 186                     toRpcErrors(((RestconfDocumentedException)e).getErrors()));
 187         }
 188
 189         throw new OperationFailedException(String.format("%s failed for URI %s", operation, uriPath), e);
 190     }
 191
 192     private static RpcError[] toRpcErrors(final List<RestconfError> from) {
 193         final RpcError[] to = new RpcError[from.size()];
 194         int i = 0;
 195         for(final RestconfError e: from) {
 196             to[i++] = RpcResultBuilder.newError(toRpcErrorType(e.getErrorType()), e.getErrorTag().getTagValue(),
 197                     e.getErrorMessage());
 198         }
 199
 200         return to;
 201     }
 202
 203     private static ErrorType toRpcErrorType(final RestconfError.ErrorType errorType) {
 204         switch(errorType) {
 205             case TRANSPORT: {
 206                 return ErrorType.TRANSPORT;
 207             }
 208             case RPC: {
 209                 return ErrorType.RPC;
 210             }
 211             case PROTOCOL: {
 212                 return ErrorType.PROTOCOL;
 213             }
 214             default: {
 215                 return ErrorType.APPLICATION;
 216             }
 217         }
 218     }
 219 }