DefaultFileNameFormat.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.storm.s3.format;

/**
 *
 */
public class DefaultFileNameFormat implements FileNameFormat {

    public static final String DELIMITER = "-";
    private String path = "storm/";
    private String prefix = "";
    private String extension = ".txt";

    /**
     * Overrides the default prefix.
     *
     * @param prefix
     * @return
     */
    public DefaultFileNameFormat withPrefix(String prefix) {
        this.prefix = prefix;
        return this;
    }

    /**
     * Overrides the default file extension.
     *
     * @param extension
     * @return
     */
    public DefaultFileNameFormat withExtension(String extension) {
        this.extension = extension;
        return this;
    }

    public DefaultFileNameFormat withPath(String path) {
        if (null == path) {
            path = "";
        }
        this.path = path;
        if (!this.path.endsWith("/")) {
            this.path = this.path + "/";
        }
        return this;
    }

    @Override
    public String getName(String identifier, long rotation, long timeStamp) {
        return this.path + this.prefix + DELIMITER + identifier + DELIMITER + rotation + DELIMITER + timeStamp + this.extension;
    }

}