001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.kahadb.journal;
018    
019    import org.apache.kahadb.util.ByteSequence;
020    
021    import java.io.IOException;
022    
023    public interface FileAppender {
024        public static final String PROPERTY_LOG_WRITE_STAT_WINDOW = "org.apache.kahadb.journal.appender.WRITE_STAT_WINDOW";
025        public static final int maxStat = Integer.parseInt(System.getProperty(PROPERTY_LOG_WRITE_STAT_WINDOW, "0"));
026    
027        Location storeItem(ByteSequence data, byte type, boolean sync) throws IOException;
028    
029        Location storeItem(ByteSequence data, byte type, Runnable onComplete) throws IOException;
030    
031        void close() throws IOException;
032    }