content: /*
   * 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 openjdk.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 openjdk.tools.javac.main.Main;
  import openjdk.tools.javac.main.Main.Result;
  import openjdk.tools.sjavac.Log;
  import openjdk.tools.sjavac.Log.Level;
  import openjdk.tools.sjavac.server.log.LazyInitFileLog;
  import openjdk.tools.sjavac.server.log.LoggingOutputStream;
  
  import static openjdk.tools.sjavac.Log.Level.ERROR;
  import static openjdk.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.");
              return Result.CMDERR.exitCode;
          }
  
          int exitCode;
          try {
              SjavacServer server = new SjavacServer(args[0]);
              exitCode = server.startServer();
          } catch (IOException | InterruptedException ex) {
              ex.printStackTrace();
              exitCode = Result.ERROR.exitCode;
          }
  
          return exitCode;
      }
  
      public static LazyInitFileLog getErrorLog() {
          return errorLog;
      }
  }
  