/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.accumulo.core.iterators.filter;
import java.util.Map;
import org.apache.accumulo.core.data.Key;
import org.apache.accumulo.core.data.Value;
import org.apache.accumulo.core.security.Authorizations;
import org.apache.accumulo.core.security.ColumnVisibility;
import org.apache.accumulo.core.security.VisibilityEvaluator;
import org.apache.accumulo.core.security.VisibilityParseException;
import org.apache.commons.collections.map.LRUMap;
import org.apache.hadoop.io.Text;
import org.apache.log4j.Logger;
/**
* @deprecated since 1.4, replaced by {@link org.apache.accumulo.core.iterators.system.VisibilityFilter}
**/
@Deprecated
public class VisibilityFilter implements Filter {
private VisibilityEvaluator ve;
private Text defaultVisibility;
private LRUMap cache;
private Text tmpVis;
private static final Logger log = Logger.getLogger(VisibilityFilter.class);
public VisibilityFilter(Authorizations authorizations, byte[] defaultVisibility) {
this.ve = new VisibilityEvaluator(authorizations);
this.defaultVisibility = new Text(defaultVisibility);
this.cache = new LRUMap(1000);
this.tmpVis = new Text();
}
public boolean accept(Key k, Value v) {
Text testVis = k.getColumnVisibility(tmpVis);
if (testVis.getLength() == 0 && defaultVisibility.getLength() == 0)
return true;
else if (testVis.getLength() == 0)
testVis = defaultVisibility;
Boolean b = (Boolean) cache.get(testVis);
if (b != null)
return b;
try {
Boolean bb = ve.evaluate(new ColumnVisibility(testVis));
cache.put(new Text(testVis), bb);
return bb;
} catch (VisibilityParseException e) {
log.error("Parse Error", e);
return false;
}
}
@Override
public void init(Map<String,String> options) {}
}