public EclipseLanguageServerFacade()

in customization-base/src/main/java/com/azure/autorest/customization/implementation/ls/EclipseLanguageServerFacade.java [35:101]
54 lines of code
9 McCabe index (conditional complexity)

    public EclipseLanguageServerFacade(String pathToLanguageServerPlugin, Logger logger) {
        Runtime.getRuntime().addShutdownHook(new Thread(this::shutdown));
        try {
            int javaVersion = Runtime.version().feature();

            Path languageServerPath = (pathToLanguageServerPlugin == null)
                    ? getLanguageServerDirectory(javaVersion, logger, false)
                    : Paths.get(pathToLanguageServerPlugin).resolve("jdt-language-server");

            List<String> command = new ArrayList<>();
            command.add("java");
            command.add("-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=1044");
            command.add("-Declipse.application=org.eclipse.jdt.ls.core.id1");
            command.add("-Dosgi.bundles.defaultStartLevel=4");
            command.add("-Declipse.product=org.eclipse.jdt.ls.core.product");
            command.add("-Dlog.protocol=true");
            command.add("-Dlog.level=ALL");
            command.add("-noverify");
            command.add("-Xmx1G");
            command.add("-jar");

            // This will need to get update when the target version of Eclipse language server changes.
            if (javaVersion < 17) {
                // JAR to start v1.12.0
                command.add("./plugins/org.eclipse.equinox.launcher_1.6.400.v20210924-0641.jar");
            } else {
                // JAR to start v1.39.0
                command.add("./plugins/org.eclipse.equinox.launcher_1.6.900.v20240613-2009.jar");
            }

            command.add("--add-modules=ALL-SYSTEM");
            command.add("--add-opens java.base/java.util=ALL-UNNAMED");
            command.add("--add-opens java.base/java.lang=ALL-UNNAMED");

            command.add("-configuration");

            if (Utils.isWindows()) {
                command.add("./config_win");
            } else if (Utils.isMac()) {
                command.add("./config_mac");
            } else {
                command.add("./config_linux");
            }

            Process server = startServer(command, languageServerPath, logger);
            if (!server.isAlive()) {
                if (pathToLanguageServerPlugin == null) {
                    // If user didn't specify language server path, we do a clean re-download.
                    logger
                            .warn("Eclipse language server failed to start. The folder may be corrupted. Try re-download.");
                    server = startServer(command, getLanguageServerDirectory(javaVersion, logger, true), logger);
                    if (!server.isAlive()) {
                        // if server failed to start anyway, throw with server output.
                        throw new RuntimeException(String.format(
                                "Eclipse language server failed to start, error output:\n %s", readServerOutput(server)));
                    }
                } else {
                    // if user specify the language server path, we just throw with server output.
                    throw new RuntimeException(String.format(
                            "Eclipse language server failed to start, error output:\n %s", readServerOutput(server)));
                }
            }
            this.server = server;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }