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
9 package org.opendaylight.netconf.mdsal.connector.ops.get;
11 import com.google.common.base.Optional;
12 import com.google.common.base.Preconditions;
13 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
14 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
15 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadWriteTransaction;
16 import org.opendaylight.netconf.api.DocumentedException;
17 import org.opendaylight.netconf.api.DocumentedException.ErrorSeverity;
18 import org.opendaylight.netconf.api.DocumentedException.ErrorTag;
19 import org.opendaylight.netconf.api.DocumentedException.ErrorType;
20 import org.opendaylight.netconf.api.xml.XmlElement;
21 import org.opendaylight.netconf.api.xml.XmlNetconfConstants;
22 import org.opendaylight.netconf.api.xml.XmlUtil;
23 import org.opendaylight.netconf.mdsal.connector.CurrentSchemaContext;
24 import org.opendaylight.netconf.mdsal.connector.TransactionProvider;
25 import org.opendaylight.netconf.mdsal.connector.ops.Datastore;
26 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
27 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
28 import org.slf4j.Logger;
29 import org.slf4j.LoggerFactory;
30 import org.w3c.dom.Document;
31 import org.w3c.dom.Element;
33 public class GetConfig extends AbstractGet {
35 private static final Logger LOG = LoggerFactory.getLogger(GetConfig.class);
37 private static final String OPERATION_NAME = "get-config";
38 private final TransactionProvider transactionProvider;
40 public GetConfig(final String netconfSessionIdForReporting, final CurrentSchemaContext schemaContext,
41 final TransactionProvider transactionProvider) {
42 super(netconfSessionIdForReporting, schemaContext);
43 this.transactionProvider = transactionProvider;
47 protected Element handleWithNoSubsequentOperations(final Document document, final XmlElement operationElement)
48 throws DocumentedException {
49 GetConfigExecution getConfigExecution = null;
51 getConfigExecution = GetConfigExecution.fromXml(operationElement, OPERATION_NAME);
53 } catch (final DocumentedException e) {
54 LOG.warn("Get request processing failed on session: {}", getNetconfSessionIdForReporting(), e);
58 final Optional<YangInstanceIdentifier> dataRootOptional = getDataRootFromFilter(operationElement);
59 if (!dataRootOptional.isPresent()) {
60 return XmlUtil.createElement(document, XmlNetconfConstants.DATA_KEY, Optional.absent());
63 final YangInstanceIdentifier dataRoot = dataRootOptional.get();
65 // Proper exception should be thrown
66 Preconditions.checkState(getConfigExecution.getDatastore().isPresent(), "Source element missing from request");
68 final DOMDataReadWriteTransaction rwTx = getTransaction(getConfigExecution.getDatastore().get());
70 final Optional<NormalizedNode<?, ?>> normalizedNodeOptional = rwTx.read(
71 LogicalDatastoreType.CONFIGURATION, dataRoot).checkedGet();
72 if (getConfigExecution.getDatastore().get() == Datastore.running) {
73 transactionProvider.abortRunningTransaction(rwTx);
76 if (!normalizedNodeOptional.isPresent()) {
77 return XmlUtil.createElement(document, XmlNetconfConstants.DATA_KEY, Optional.absent());
80 return serializeNodeWithParentStructure(document, dataRoot, normalizedNodeOptional.get());
81 } catch (final ReadFailedException e) {
82 LOG.warn("Unable to read data: {}", dataRoot, e);
83 throw new IllegalStateException("Unable to read data " + dataRoot, e);
87 private DOMDataReadWriteTransaction getTransaction(final Datastore datastore) throws DocumentedException {
88 if (datastore == Datastore.candidate) {
89 return transactionProvider.getOrCreateTransaction();
90 } else if (datastore == Datastore.running) {
91 return transactionProvider.createRunningTransaction();
93 throw new DocumentedException("Incorrect Datastore: ", ErrorType.PROTOCOL, ErrorTag.BAD_ELEMENT,
98 protected String getOperationName() {
99 return OPERATION_NAME;