/*

 * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package com.sun.tools.sjavac.server;

import java.io.FileWriter;

import java.io.FilterOutputStream;

import java.io.FilterWriter;

import java.io.IOException;

import java.io.PrintStream;

import java.lang.Thread.UncaughtExceptionHandler;

import com.sun.tools.sjavac.Log;

import com.sun.tools.sjavac.Log.Level;

import com.sun.tools.sjavac.server.log.LazyInitFileLog;

import com.sun.tools.sjavac.server.log.LoggingOutputStream;

import static com.sun.tools.sjavac.Log.Level.ERROR;

import static com.sun.tools.sjavac.Log.Level.INFO;

/**

 *  <p><b>This is NOT part of any supported API.

 *  If you write code that depends on this, you do so at your own risk.

 *  This code and its internal interfaces are subject to change or

 *  deletion without notice.</b>

 */

public class ServerMain {

    // For logging server internal (non request specific) errors.

    private static LazyInitFileLog errorLog;

    public static int run(String[] args) {

        // Under normal operation, all logging messages generated server-side

        // are due to compilation requests. These logging messages should

        // be relayed back to the requesting client rather than written to the

        // server log. The only messages that should be written to the server

        // log (in production mode) should be errors,

        Log.setLogForCurrentThread(errorLog = new LazyInitFileLog("server.log"));

        Log.setLogLevel(ERROR); // should be set to ERROR.

        // Make sure no exceptions go under the radar

        Thread.setDefaultUncaughtExceptionHandler((t, e) -> {

            Log.setLogForCurrentThread(errorLog);

            Log.error(e);

        });

        // Inevitably someone will try to print messages using System.{out,err}.

        // Make sure this output also ends up in the log.

        System.setOut(new PrintStream(new LoggingOutputStream(System.out, INFO, "[stdout] ")));

        System.setErr(new PrintStream(new LoggingOutputStream(System.err, ERROR, "[stderr] ")));

        // Any options other than --startserver?

        if (args.length > 1) {

            Log.error("When spawning a background server, only a single --startserver argument is allowed.");

        }

        int exitCode;

        try {

            SjavacServer server = new SjavacServer(args[0]);

            exitCode = server.startServer();

        } catch (IOException | InterruptedException ex) {

            ex.printStackTrace();

        }

        return exitCode;

    }

    public static LazyInitFileLog getErrorLog() {

        return errorLog;

    }

}