com.antsdb.saltedfish.sql.FishCommandLine.java Source code

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Here is the source code for com.antsdb.saltedfish.sql.FishCommandLine.java

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/*-------------------------------------------------------------------------------------------------
 _______ __   _ _______ _______ ______  ______
 |_____| | \  |    |    |______ |     \ |_____]
 |     | |  \_|    |    ______| |_____/ |_____]
    
 Copyright (c) 2016, antsdb.com and/or its affiliates. All rights reserved. *-xguo0<@
    
 This program is free software: you can redistribute it and/or modify it under the terms of the
 GNU Affero General Public License, version 3, as published by the Free Software Foundation.
    
 You should have received a copy of the GNU Affero General Public License along with this program.
 If not, see <https://www.gnu.org/licenses/agpl-3.0.txt>
-------------------------------------------------------------------------------------------------*/
package com.antsdb.saltedfish.sql;

import java.io.File;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.log4j.BasicConfigurator;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.apache.log4j.varia.NullAppender;

import com.antsdb.saltedfish.nosql.HumpbackReadOnly;
import com.antsdb.saltedfish.util.CommandLineHelper;

/**
 * 
 * @author wgu0
 */
public abstract class FishCommandLine implements CommandLineHelper {
    protected CommandLine cmd;

    abstract protected Options getOptions();

    static {
        String level = System.getenv("ANTSDB_DEBUG");
        BasicConfigurator.resetConfiguration();
        if (level != null) {
            BasicConfigurator.resetConfiguration();
            BasicConfigurator.configure();
            Logger.getRootLogger().setLevel(Level.toLevel(level));
        } else {
            BasicConfigurator.resetConfiguration();
            BasicConfigurator.configure(new NullAppender());
        }
    }

    public FishCommandLine(String[] args) throws ParseException {
        this.cmd = parse(getOptions(), args);
    }

    public File getHome() {
        String home = cmd.getOptionValue("home");
        if (home == null) {
            home = System.getenv("ANTSDB_HOME");
        }
        if (home == null) {
            println("error: home directory is not specified");
            return null;
        }
        File file = new File(home);
        if (!new File(file, "data/checkpoint.bin").exists()) {
            println("error: home directory '%s' is invalid", file.getAbsolutePath());
            return null;
        }
        return file;
    }

    public HumpbackReadOnly getHumpbackReadOnly() throws Exception {
        File home = getHome();
        if (home == null) {
            return null;
        }
        HumpbackReadOnly humpback = new HumpbackReadOnly(home);
        return humpback;
    }
}