/*
 * 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.jena.dboe.base.block;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class BlockMgrLogger implements BlockMgr // extends BlockMgrWrapper
{
    private final BlockMgr  blockMgr;
    protected final Logger  log;
    protected final boolean logAllOperations;
    private final String    label;

    public BlockMgrLogger(BlockMgr blockMgr, boolean logAllOperations) {
        this(null, blockMgr.getLabel(), blockMgr, logAllOperations);
    }

    public BlockMgrLogger(String label, BlockMgr blockMgr, boolean logAllOperations) {
        this(null, label, blockMgr, logAllOperations);
    }

    public BlockMgrLogger(Logger log, String label, BlockMgr blockMgr, boolean logAllOperations) {
        this.blockMgr = blockMgr;
        if ( log == null )
            log = LoggerFactory.getLogger(BlockMgr.class);
        this.log = log;
        this.logAllOperations = logAllOperations;
        if ( label == null )
            label = blockMgr.getLabel();
        this.label = label;
    }

    @Override
    public String getLabel() {
        return label;
    }

    @Override
    public Block allocate(int blockSize) {
        Block x = blockMgr.allocate(blockSize);
        info("Allocate(" + x.getId() + ")");
        return x;
    }

    @Override
    public boolean isEmpty() {
        info("isEmpty()");
        return blockMgr.isEmpty();
    }

    @Override
    public long allocLimit() {
        info("limit()");
        return blockMgr.allocLimit();
    }

    @Override
    public void resetAlloc(long boundary) {
        info("resetAlloc("+boundary+")");
        blockMgr.resetAlloc(boundary);
    }

    @Override
    public Block getRead(long id) {
        info("getRead(" + id + ")");
        return blockMgr.getRead(id);
    }

    @Override
    public Block getWrite(long id) {
        info("getWrite(" + id + ")");
        return blockMgr.getWrite(id);
    }

    @Override
    public Block promote(Block block) {
        info("promote(" + block.getId() + ")");
        return blockMgr.promote(block);
    }

    @Override
    public void release(Block block) {
        info("release(" + block.getId() + ")");
        blockMgr.release(block);
    }

    @Override
    public void write(Block block) {
        info("write(" + block.getId() + ")");
        blockMgr.write(block);
    }

    @Override
    public void overwrite(Block block) {
        info("overwrite(" + block.getId() + ")");
        blockMgr.overwrite(block);
    }

    @Override
    public void free(Block block) {
        info("freeBlock(" + block.getId() + ")");
        blockMgr.free(block);
    }

    @Override
    public boolean valid(int id) {
        info("valid(" + id + ")");
        return blockMgr.valid(id);
    }

    @Override
    public void close() {
        info("close");
        blockMgr.close();
    }

    @Override
    public boolean isClosed() {
        info("isClosed");
        return blockMgr.isClosed();
    }

    @Override
    public void sync() {
        info("sync");
        blockMgr.sync();
    }

    @Override
    public void syncForce() {
        info("syncForce");
        blockMgr.syncForce();
    }

    @Override
    public void beginRead() {
        info("> start read");
        blockMgr.beginRead();
    }

    @Override
    public void endRead() {
        info("< finish read");
        blockMgr.endRead();
    }

    @Override
    public void beginUpdate() {
        info("> start update");
        blockMgr.beginUpdate();
    }

    @Override
    public void endUpdate() {
        info("< finish update");
        blockMgr.endUpdate();
    }

    private void info(String string) {
        if ( label != null )
            string = label + ": " + string;
        log.info(string);
    }
}
