1 /* 2 * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.tools.sjavac.server; 27 28 import java.io.FileWriter; 29 import java.io.FilterOutputStream; 30 import java.io.FilterWriter; 31 import java.io.IOException; 32 import java.io.PrintStream; 33 import java.lang.Thread.UncaughtExceptionHandler; 34 35 import com.sun.tools.javac.main.Main; 36 import com.sun.tools.javac.main.Main.Result; 37 import com.sun.tools.sjavac.Log; 38 import com.sun.tools.sjavac.Log.Level; 39 import com.sun.tools.sjavac.server.log.LazyInitFileLog; 40 import com.sun.tools.sjavac.server.log.LoggingOutputStream; 41 42 import static com.sun.tools.sjavac.Log.Level.ERROR; 43 import static com.sun.tools.sjavac.Log.Level.INFO; 44 45 /** 46 * <p><b>This is NOT part of any supported API. 47 * If you write code that depends on this, you do so at your own risk. 48 * This code and its internal interfaces are subject to change or 49 * deletion without notice.</b> 50 */ 51 public class ServerMain { 52 53 // For logging server internal (non request specific) errors. 54 private static LazyInitFileLog errorLog; 55 run(String[] args)56 public static int run(String[] args) { 57 58 // Under normal operation, all logging messages generated server-side 59 // are due to compilation requests. These logging messages should 60 // be relayed back to the requesting client rather than written to the 61 // server log. The only messages that should be written to the server 62 // log (in production mode) should be errors, 63 Log.setLogForCurrentThread(errorLog = new LazyInitFileLog("server.log")); 64 Log.setLogLevel(ERROR); // should be set to ERROR. 65 66 // Make sure no exceptions go under the radar 67 Thread.setDefaultUncaughtExceptionHandler((t, e) -> { 68 Log.setLogForCurrentThread(errorLog); 69 Log.error(e); 70 }); 71 72 // Inevitably someone will try to print messages using System.{out,err}. 73 // Make sure this output also ends up in the log. 74 System.setOut(new PrintStream(new LoggingOutputStream(System.out, INFO, "[stdout] "))); 75 System.setErr(new PrintStream(new LoggingOutputStream(System.err, ERROR, "[stderr] "))); 76 77 // Any options other than --startserver? 78 if (args.length > 1) { 79 Log.error("When spawning a background server, only a single --startserver argument is allowed."); 80 return Result.CMDERR.exitCode; 81 } 82 83 int exitCode; 84 try { 85 SjavacServer server = new SjavacServer(args[0]); 86 exitCode = server.startServer(); 87 } catch (IOException | InterruptedException ex) { 88 ex.printStackTrace(); 89 exitCode = Result.ERROR.exitCode; 90 } 91 92 return exitCode; 93 } 94 getErrorLog()95 public static LazyInitFileLog getErrorLog() { 96 return errorLog; 97 } 98 } 99