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javaServerStarter.ts
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141 lines (132 loc) · 4.84 KB
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import * as path from 'path';
import * as net from 'net';
import * as glob from 'glob';
import * as os from 'os';
import { StreamInfo, Executable, ExecutableOptions } from 'vscode-languageclient';
import { RequirementsData } from './requirements';
import { getJavaEncoding, IS_WORKSPACE_VMARGS_ALLOWED, getKey, getJavaagentFlag } from './settings';
import { logger } from './log';
import { getJavaConfiguration } from './utils';
import { workspace, ExtensionContext } from 'vscode';
declare var v8debug;
const DEBUG = (typeof v8debug === 'object') || startedInDebugMode();
export function prepareExecutable(requirements: RequirementsData, workspacePath, javaConfig, context: ExtensionContext): Executable {
const executable: Executable = Object.create(null);
const options: ExecutableOptions = Object.create(null);
options.env = process.env;
executable.options = options;
executable.command = path.resolve(requirements.java_home + '/bin/java');
executable.args = prepareParams(requirements, javaConfig, workspacePath, context);
logger.info(`Starting Java server with: ${executable.command} ${executable.args.join(' ')}`);
return executable;
}
export function awaitServerConnection(port): Thenable<StreamInfo> {
const addr = parseInt(port);
return new Promise((res, rej) => {
const server = net.createServer(stream => {
server.close();
logger.info('JDT LS connection established on port ' + addr);
res({ reader: stream, writer: stream });
});
server.on('error', rej);
server.listen(addr, () => {
server.removeListener('error', rej);
logger.info('Awaiting JDT LS connection on port ' + addr);
});
return server;
});
}
function prepareParams(requirements: RequirementsData, javaConfiguration, workspacePath, context: ExtensionContext): string[] {
const params: string[] = [];
if (DEBUG) {
params.push('-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=1044,quiet=y');
// suspend=y is the default. Use this form if you need to debug the server startup code:
// params.push('-agentlib:jdwp=transport=dt_socket,server=y,address=1044');
}
if (requirements.java_version > 8) {
params.push('--add-modules=ALL-SYSTEM',
'--add-opens',
'java.base/java.util=ALL-UNNAMED',
'--add-opens',
'java.base/java.lang=ALL-UNNAMED');
}
params.push('-Declipse.application=org.eclipse.jdt.ls.core.id1',
'-Dosgi.bundles.defaultStartLevel=4',
'-Declipse.product=org.eclipse.jdt.ls.core.product');
if (DEBUG) {
params.push('-Dlog.level=ALL');
}
let vmargsCheck = workspace.getConfiguration().inspect('java.jdt.ls.vmargs').workspaceValue;
if (vmargsCheck !== undefined) {
const agentFlag = getJavaagentFlag(vmargsCheck);
if (agentFlag !== null) {
const keyVmargs = getKey(IS_WORKSPACE_VMARGS_ALLOWED, context.storagePath, vmargsCheck);
const key = context.globalState.get(keyVmargs);
if (key !== true) {
vmargsCheck = workspace.getConfiguration().inspect('java.jdt.ls.vmargs').globalValue;
}
}
} else {
vmargsCheck = getJavaConfiguration().get('jdt.ls.vmargs');
}
let vmargs;
if (vmargsCheck !== undefined) {
vmargs = vmargsCheck + '';
} else {
vmargs = '';
}
const encodingKey = '-Dfile.encoding=';
if (vmargs.indexOf(encodingKey) < 0) {
params.push(encodingKey + getJavaEncoding());
}
if (os.platform() === 'win32') {
const watchParentProcess = '-DwatchParentProcess=';
if (vmargs.indexOf(watchParentProcess) < 0) {
params.push(watchParentProcess + 'false');
}
}
parseVMargs(params, vmargs);
const serverHome: string = path.resolve(__dirname, '../server');
const launchersFound: Array<string> = glob.sync('**/plugins/org.eclipse.equinox.launcher_*.jar', { cwd: serverHome });
if (launchersFound.length) {
params.push('-jar'); params.push(path.resolve(serverHome, launchersFound[0]));
} else {
return null;
}
// select configuration directory according to OS
let configDir = 'config_win';
if (process.platform === 'darwin') {
configDir = 'config_mac';
} else if (process.platform === 'linux') {
configDir = 'config_linux';
}
params.push('-configuration'); params.push(path.resolve(__dirname, '../server', configDir));
params.push('-data'); params.push(workspacePath);
return params;
}
function startedInDebugMode(): boolean {
const args = (process as any).execArgv;
if (args) {
return args.some((arg) => /^--debug=?/.test(arg) || /^--debug-brk=?/.test(arg) || /^--inspect-brk=?/.test(arg));
}
return false;
}
// exported for tests
export function parseVMargs(params: any[], vmargsLine: string) {
if (!vmargsLine) {
return;
}
const vmargs = vmargsLine.match(/(?:[^\s"]+|"[^"]*")+/g);
if (vmargs === null) {
return;
}
vmargs.forEach(arg => {
// remove all standalone double quotes
arg = arg.replace(/(\\)?"/g, ($0, $1) => { return ($1 ? $0 : ''); });
// unescape all escaped double quotes
arg = arg.replace(/(\\)"/g, '"');
if (params.indexOf(arg) < 0) {
params.push(arg);
}
});
}