| /* |
| * 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 com.sun.tools.sjavac.Log; |
| import com.sun.tools.sjavac.Util; |
| |
| import java.io.BufferedReader; |
| import java.io.InputStreamReader; |
| import java.io.PrintWriter; |
| import java.net.Socket; |
| import java.nio.file.Path; |
| |
| import static com.sun.tools.sjavac.server.SjavacServer.LINE_TYPE_RC; |
| |
| |
| /** |
| * A RequestHandler handles requests performed over a socket. Specifically it |
| * - Reads the command string specifying which method is to be invoked |
| * - Reads the appropriate arguments |
| * - Delegates the actual invocation to the given sjavac implementation |
| * - Writes the result back to the socket output stream |
| * |
| * None of the work performed by this class is really bound by the CPU. It |
| * should be completely fine to have a large number of RequestHandlers active. |
| * To limit the number of concurrent compilations, use PooledSjavac. |
| * |
| * <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 RequestHandler extends Thread { |
| |
| private final Socket socket; |
| private final Sjavac sjavac; |
| |
| public RequestHandler(Socket socket, Sjavac sjavac) { |
| this.socket = socket; |
| this.sjavac = sjavac; |
| } |
| |
| @Override |
| public void run() { |
| |
| try (BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream())); |
| PrintWriter out = new PrintWriter(socket.getOutputStream(), true)) { |
| |
| // Set up logging for this thread. Stream back logging messages to |
| // client on the format format "level:msg". |
| Log.setLogForCurrentThread(new Log(out, out) { |
| @Override |
| protected boolean isLevelLogged(Level l) { |
| // Make sure it is up to the client to decide whether or |
| // not this message should be displayed. |
| return true; |
| } |
| |
| @Override |
| protected void printLogMsg(Level msgLevel, String msg) { |
| // Follow sjavac server/client protocol: Send one line |
| // at a time and prefix with message with "level:". |
| Util.getLines(msg) |
| .map(line -> msgLevel + ":" + line) |
| .forEach(line -> super.printLogMsg(msgLevel, line)); |
| } |
| }); |
| |
| // Read argument array |
| int n = Integer.parseInt(in.readLine()); |
| String[] args = new String[n]; |
| for (int i = 0; i < n; i++) { |
| args[i] = in.readLine(); |
| } |
| |
| // If there has been any internal errors, notify client |
| checkInternalErrorLog(); |
| |
| // Perform compilation |
| int rc = sjavac.compile(args); |
| |
| // Send return code back to client |
| out.println(LINE_TYPE_RC + ":" + rc); |
| |
| // Check for internal errors again. |
| checkInternalErrorLog(); |
| } catch (Exception ex) { |
| // Not much to be done at this point. The client side request |
| // code will most likely throw an IOException and the |
| // compilation will fail. |
| Log.error(ex); |
| } finally { |
| Log.setLogForCurrentThread(null); |
| } |
| } |
| |
| private void checkInternalErrorLog() { |
| Path errorLog = ServerMain.getErrorLog().getLogDestination(); |
| if (errorLog != null) { |
| Log.error("Server has encountered an internal error. See " + errorLog.toAbsolutePath() |
| + " for details."); |
| } |
| } |
| } |