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.Preconditions;
11 import java.util.Optional;
12 import java.util.concurrent.ExecutionException;
13 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
14 import org.opendaylight.mdsal.dom.api.DOMDataTreeReadWriteTransaction;
15 import org.opendaylight.netconf.api.DocumentedException;
16 import org.opendaylight.netconf.api.DocumentedException.ErrorTag;
17 import org.opendaylight.netconf.api.xml.XmlElement;
18 import org.opendaylight.netconf.api.xml.XmlNetconfConstants;
19 import org.opendaylight.netconf.mdsal.connector.CurrentSchemaContext;
20 import org.opendaylight.netconf.mdsal.connector.TransactionProvider;
21 import org.opendaylight.netconf.mdsal.connector.ops.Datastore;
22 import org.opendaylight.yangtools.yang.common.ErrorSeverity;
23 import org.opendaylight.yangtools.yang.common.ErrorType;
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 GetConfig extends AbstractGet {
33 private static final Logger LOG = LoggerFactory.getLogger(GetConfig.class);
35 private static final String OPERATION_NAME = "get-config";
36 private final TransactionProvider transactionProvider;
38 public GetConfig(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 {
47 GetConfigExecution getConfigExecution = null;
49 getConfigExecution = GetConfigExecution.fromXml(operationElement, OPERATION_NAME);
51 } catch (final DocumentedException e) {
52 LOG.warn("Get request processing failed on session: {}", getNetconfSessionIdForReporting(), e);
56 final Optional<YangInstanceIdentifier> dataRootOptional = getDataRootFromFilter(operationElement);
57 if (dataRootOptional.isEmpty()) {
58 return document.createElement(XmlNetconfConstants.DATA_KEY);
61 final YangInstanceIdentifier dataRoot = dataRootOptional.get();
63 // Proper exception should be thrown
64 Preconditions.checkState(getConfigExecution.getDatastore().isPresent(), "Source element missing from request");
66 final DOMDataTreeReadWriteTransaction rwTx = getTransaction(getConfigExecution.getDatastore().get());
68 final Optional<NormalizedNode> normalizedNodeOptional = rwTx.read(
69 LogicalDatastoreType.CONFIGURATION, dataRoot).get();
70 if (getConfigExecution.getDatastore().get() == Datastore.running) {
71 transactionProvider.abortRunningTransaction(rwTx);
74 if (normalizedNodeOptional.isEmpty()) {
75 return document.createElement(XmlNetconfConstants.DATA_KEY);
78 return serializeNodeWithParentStructure(document, dataRoot, normalizedNodeOptional.get());
79 } catch (final InterruptedException | ExecutionException e) {
80 LOG.warn("Unable to read data: {}", dataRoot, e);
81 throw new IllegalStateException("Unable to read data " + dataRoot, e);
85 private DOMDataTreeReadWriteTransaction getTransaction(final Datastore datastore) throws DocumentedException {
86 if (datastore == Datastore.candidate) {
87 return transactionProvider.getOrCreateTransaction();
88 } else if (datastore == Datastore.running) {
89 return transactionProvider.createRunningTransaction();
91 throw new DocumentedException("Incorrect Datastore: ", ErrorType.PROTOCOL, ErrorTag.BAD_ELEMENT,
96 protected String getOperationName() {
97 return OPERATION_NAME;