NotificationEventPathFilter.java

/*
 * 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.nifi.processors.hadoop.inotify;

import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.PathFilter;

import java.util.regex.Pattern;

class NotificationEventPathFilter implements PathFilter {
    private final Pattern watchDirectory;
    private final boolean toIgnoreHiddenFiles;

    NotificationEventPathFilter(Pattern watchDirectory, boolean toIgnoreHiddenFiles) {
        this.watchDirectory = watchDirectory;
        this.toIgnoreHiddenFiles = toIgnoreHiddenFiles;
    }

    @Override
    public boolean accept(Path path) {
        return !(path == null || (toIgnoreHiddenFiles && path.getName().startsWith(".")))
                && watchDirectory.matcher(path.toString()).matches();
    }
}