Added xml storage adapter bundle fragments for config persister.

[controller.git] / opendaylight / config / config-persister-directory-xml-adapter / src / main / java / org / opendaylight / controller / config / persist / storage / directory / xml / XmlDirectoryStorageAdapter.java

diff --git a/opendaylight/config/config-persister-directory-xml-adapter/src/main/java/org/opendaylight/controller/config/persist/storage/directory/xml/XmlDirectoryStorageAdapter.java b/opendaylight/config/config-persister-directory-xml-adapter/src/main/java/org/opendaylight/controller/config/persist/storage/directory/xml/XmlDirectoryStorageAdapter.java
new file mode 100644 (file)
index 0000000..ab6fb15
--- /dev/null
+++ b/opendaylight/config/config-persister-directory-xml-adapter/src/main/java/org/opendaylight/controller/config/persist/storage/directory/xml/XmlDirectoryStorageAdapter.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.controller.config.persist.storage.directory.xml;
+
+import com.google.common.base.Preconditions;
+import org.opendaylight.controller.config.persist.api.Persister;
+import org.opendaylight.controller.config.persist.api.PropertiesProvider;
+import org.opendaylight.controller.config.persist.api.StorageAdapter;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+
+/**
+ * StorageAdapter that retrieves initial configuration from a directory. If multiple files are present, snapshot and
+ * required capabilities will be merged together. Writing to this persister is not supported.
+ */
+public class XmlDirectoryStorageAdapter implements StorageAdapter {
+    private static final Logger logger = LoggerFactory.getLogger(XmlDirectoryStorageAdapter.class);
+
+    public static final String DIRECTORY_STORAGE_PROP = "directoryStorage";
+
+
+    @Override
+    public Persister instantiate(PropertiesProvider propertiesProvider) {
+        String fileStorageProperty = propertiesProvider.getProperty(DIRECTORY_STORAGE_PROP);
+        Preconditions.checkNotNull(fileStorageProperty, "Unable to find " + propertiesProvider.getFullKeyForReporting(DIRECTORY_STORAGE_PROP));
+        File storage  = new File(fileStorageProperty);
+        logger.debug("Using {}", storage);
+        return new XmlDirectoryPersister(storage);
+    }
+
+}