2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.netconf.mdsal.connector.ops.get;
10 import com.google.common.base.Optional;
11 import java.util.concurrent.ExecutionException;
12 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
13 import org.opendaylight.mdsal.dom.api.DOMDataTreeReadWriteTransaction;
14 import org.opendaylight.netconf.api.DocumentedException;
15 import org.opendaylight.netconf.api.DocumentedException.ErrorSeverity;
16 import org.opendaylight.netconf.api.DocumentedException.ErrorTag;
17 import org.opendaylight.netconf.api.DocumentedException.ErrorType;
18 import org.opendaylight.netconf.api.xml.XmlElement;
19 import org.opendaylight.netconf.api.xml.XmlNetconfConstants;
20 import org.opendaylight.netconf.api.xml.XmlUtil;
21 import org.opendaylight.netconf.mdsal.connector.CurrentSchemaContext;
22 import org.opendaylight.netconf.mdsal.connector.TransactionProvider;
23 import org.opendaylight.netconf.mdsal.connector.ops.Datastore;
24 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
25 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
26 import org.slf4j.Logger;
27 import org.slf4j.LoggerFactory;
28 import org.w3c.dom.Document;
29 import org.w3c.dom.Element;
31 public class Get extends AbstractGet {
33 private static final Logger LOG = LoggerFactory.getLogger(Get.class);
35 private static final String OPERATION_NAME = "get";
36 private final TransactionProvider transactionProvider;
38 public Get(final String netconfSessionIdForReporting, final CurrentSchemaContext schemaContext,
39 final TransactionProvider transactionProvider) {
40 super(netconfSessionIdForReporting, schemaContext);
41 this.transactionProvider = transactionProvider;
45 protected Element handleWithNoSubsequentOperations(final Document document, final XmlElement operationElement)
46 throws DocumentedException {
48 final Optional<YangInstanceIdentifier> dataRootOptional = getDataRootFromFilter(operationElement);
49 if (!dataRootOptional.isPresent()) {
50 return XmlUtil.createElement(document, XmlNetconfConstants.DATA_KEY, Optional.absent());
53 final YangInstanceIdentifier dataRoot = dataRootOptional.get();
55 final DOMDataTreeReadWriteTransaction rwTx = getTransaction(Datastore.running);
57 final java.util.Optional<NormalizedNode<?, ?>> normalizedNodeOptional = rwTx.read(
58 LogicalDatastoreType.OPERATIONAL, dataRoot).get();
59 transactionProvider.abortRunningTransaction(rwTx);
61 if (!normalizedNodeOptional.isPresent()) {
62 return XmlUtil.createElement(document, XmlNetconfConstants.DATA_KEY, Optional.absent());
65 return serializeNodeWithParentStructure(document, dataRoot, normalizedNodeOptional.get());
66 } catch (final InterruptedException | ExecutionException e) {
67 LOG.warn("Unable to read data: {}", dataRoot, e);
68 throw new IllegalStateException("Unable to read data " + dataRoot, e);
72 private DOMDataTreeReadWriteTransaction getTransaction(final Datastore datastore) throws DocumentedException {
73 if (datastore == Datastore.candidate) {
74 return transactionProvider.getOrCreateTransaction();
75 } else if (datastore == Datastore.running) {
76 return transactionProvider.createRunningTransaction();
78 throw new DocumentedException("Incorrect Datastore: ", ErrorType.PROTOCOL, ErrorTag.BAD_ELEMENT,
83 protected String getOperationName() {
84 return OPERATION_NAME;