131 lines
4.7 KiB
Java
131 lines
4.7 KiB
Java
/*
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* Copyright (c) 2014, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package javacserver.client;
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import java.io.IOException;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.Arrays;
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import java.util.List;
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import javacserver.shared.PortFile;
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import javacserver.util.Log;
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/**
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* Description of the arguments needed to start a javacserver client, as extracted from
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* the command line and configuration file.
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*/
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public record ClientConfiguration(PortFile portFile, String javaCommand, String[] javacArgs) {
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static ClientConfiguration fromCommandLineArguments(String... args) {
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String confFileName = getConfFileName(args);
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if (confFileName == null) {
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return null;
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}
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String confFileContent = getConfFileContent(confFileName);
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if (confFileContent == null) {
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return null;
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}
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String portFileName = getPortFileName(confFileContent);
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if (portFileName == null) {
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return null;
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}
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String javaCommand = getJavaCommandString(confFileContent);
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if (javaCommand == null) {
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return null;
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}
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PortFile portFile = new PortFile(portFileName);
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String[] javacArgs = Arrays.copyOfRange(args, 1, args.length);
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ClientConfiguration conf = new ClientConfiguration(portFile, javaCommand, javacArgs);
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return conf;
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}
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private static String getConfFileName(String[] args) {
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if (args.length < 1) {
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Log.error("Error: javacserver client: missing --conf=<conf file> argument");
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return null;
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}
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String[] conf = args[0].split("=", 2);
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if (conf.length != 2 || !conf[0].equalsIgnoreCase("--conf")) {
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Log.error("Error: javacserver client: first argument must be --conf=<conf file>");
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return null;
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}
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String confFileName = conf[1];
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if (!Files.exists(Path.of(confFileName))) {
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Log.error("Error: javacserver client: specified conf file does not exist");
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return null;
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}
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return confFileName;
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}
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private static String getConfFileContent(String confFile) {
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try {
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List<String> confFileLines = Files.readAllLines(Path.of(confFile));
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String confFileContent = String.join("\n", confFileLines);
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return confFileContent;
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} catch (IOException e) {
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Log.error("Cannot read configuration file " + confFile);
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Log.debug(e);
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return null;
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}
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}
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private static String getJavaCommandString(String confFileContent) {
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String serverCommandString = getConfValue("javacmd", confFileContent);
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if (serverCommandString.isEmpty()) {
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Log.error("Configuration file missing value for 'javacmd'");
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return null;
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} else {
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return serverCommandString;
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}
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}
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private static String getPortFileName(String confFileContent) {
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String portfileName = getConfValue("portfile", confFileContent);
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if (portfileName.isEmpty()) {
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Log.error("Configuration file missing value for 'portfile'");
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return null;
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} else {
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return portfileName;
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}
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}
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private static String getConfValue(String optionName, String content) {
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String result;
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int p = content.indexOf(optionName + "=");
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if (p == -1) {
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result = "";
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} else {
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p += optionName.length() + 1;
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int pe = content.indexOf('\n', p);
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if (pe == -1) pe = content.length();
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result = content.substring(p, pe);
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}
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return result.strip();
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}
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} |