2 * Copyright (c) 2013 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.controller.config.persist.storage.directory.xml;
11 import com.google.common.base.Preconditions;
12 import com.google.common.base.Splitter;
13 import com.google.common.collect.Sets;
18 import org.opendaylight.controller.config.persist.api.Persister;
19 import org.opendaylight.controller.config.persist.api.PropertiesProvider;
20 import org.opendaylight.controller.config.persist.api.StorageAdapter;
21 import org.slf4j.Logger;
22 import org.slf4j.LoggerFactory;
25 * StorageAdapter that retrieves initial configuration from a directory. If multiple files are present, snapshot and
26 * required capabilities will be merged together. Writing to this persister is not supported.
28 public class XmlDirectoryStorageAdapter implements StorageAdapter {
29 private static final Logger LOG = LoggerFactory.getLogger(XmlDirectoryStorageAdapter.class);
31 public static final String DIRECTORY_STORAGE_PROP = "directoryStorage";
32 public static final String INCLUDE_EXT_PROP = "includeExtensions";
33 private static final char EXTENSIONS_SEPARATOR = ',';
36 public Persister instantiate(final PropertiesProvider propertiesProvider) {
37 String fileStorageProperty = propertiesProvider.getProperty(DIRECTORY_STORAGE_PROP);
38 Preconditions.checkNotNull(fileStorageProperty,
39 "Unable to find " + propertiesProvider.getFullKeyForReporting(DIRECTORY_STORAGE_PROP));
40 File storage = new File(fileStorageProperty);
41 String fileExtensions = propertiesProvider.getProperty(INCLUDE_EXT_PROP);
43 LOG.debug("Using storage: {}", storage);
45 if (fileExtensions != null) {
46 LOG.debug("Using extensions: {}", fileExtensions);
47 return new XmlDirectoryPersister(storage, splitExtensions(fileExtensions));
49 return new XmlDirectoryPersister(storage);
53 private Set<String> splitExtensions(final String fileExtensions) {
54 return Sets.newHashSet(Splitter.on(EXTENSIONS_SEPARATOR).trimResults().omitEmptyStrings()
55 .split(fileExtensions));