/*
* Copyright 2010 Outerthought bvba
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.lilyproject.repository.impl;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.SortedMap;
import java.util.TreeMap;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.lilyproject.repository.api.Blob;
import org.lilyproject.repository.api.BlobStoreAccess;
import org.lilyproject.repository.api.BlobStoreAccessFactory;
public class SizeBasedBlobStoreAccessFactory implements BlobStoreAccessFactory {
private Log log = LogFactory.getLog(getClass());
private final Map<String, BlobStoreAccess> blobStoreAccesses = new HashMap<String, BlobStoreAccess>();
private final SortedMap<Long, BlobStoreAccess> usedBlobStoreAccesses = new TreeMap<Long, BlobStoreAccess>();
public SizeBasedBlobStoreAccessFactory(List<BlobStoreAccess> availableBlobStoreAccesses, BlobStoreAccessConfig blobStoreAccessConfig) {
for (BlobStoreAccess blobStoreAccess : availableBlobStoreAccesses) {
blobStoreAccesses.put(blobStoreAccess.getId(), blobStoreAccess);
}
BlobStoreAccess defaultBlobStoreAccess = blobStoreAccesses.get(blobStoreAccessConfig.getDefault());
usedBlobStoreAccesses.put(Long.MAX_VALUE, defaultBlobStoreAccess);
log.info("Setting default blobstore " + defaultBlobStoreAccess.getId());
Map<String, Long> limits = blobStoreAccessConfig.getLimits();
for (Entry<String, Long> limit : limits.entrySet()) {
addBlobStoreAccess(limit.getValue(), blobStoreAccesses.get(limit.getKey()));
}
}
private void addBlobStoreAccess(long upperLimit, BlobStoreAccess blobStoreAccess) {
usedBlobStoreAccesses.put(upperLimit, blobStoreAccess);
log.info("Setting limit "+ upperLimit+ " for blobstore " +blobStoreAccess.getId());
}
@Override
public BlobStoreAccess get(Blob blob) {
Long size = blob.getSize();
for (Long upperLimit: usedBlobStoreAccesses.keySet()) {
if (size <= upperLimit) {
return usedBlobStoreAccesses.get(upperLimit);
}
}
return usedBlobStoreAccesses.get(Long.MAX_VALUE);
}
@Override
public Collection<BlobStoreAccess> getAll() {
return usedBlobStoreAccesses.values();
}
}