@Override
public void beforeCommand(Command command, CommandEnvironment env) {
this.env = env;
env.getEventBus().register(this);
if (workers == null) {
Path logDir = env.getRuntime().getOutputBase().getRelative("worker-logs");
try {
logDir.createDirectory();
} catch (IOException e) {
env.getReporter()
.handle(Event.error("Could not create directory for worker logs: " + logDir));
}
GenericKeyedObjectPoolConfig config = new GenericKeyedObjectPoolConfig();
// It's better to re-use a worker as often as possible and keep it hot, in order to profit
// from JIT optimizations as much as possible.
config.setLifo(true);
// Check for & deal with idle workers every 5 seconds.
config.setTimeBetweenEvictionRunsMillis(5 * 1000);
// Always test the liveliness of worker processes.
config.setTestOnBorrow(true);
config.setTestOnCreate(true);
config.setTestOnReturn(true);
config.setTestWhileIdle(true);
// Don't limit the total number of worker processes, as otherwise the pool might be full of
// e.g. Java workers and could never accommodate another request for a different kind of
// worker.
config.setMaxTotal(-1);
workers = new WorkerPool(new WorkerFactory(), config);
workers.setReporter(env.getReporter());
workers.setLogDirectory(logDir);
}
}
@Before
public final void startServer() throws Exception {
// Do not use `createUnixTempDir()` here since the file name that results is longer
// than 108 characters, so cannot be used as local socket address.
File file = File.createTempFile("scratch", ".tmp", new File("/tmp"));
file.delete();
file.mkdir();
serverDir = this.scratch.dir(file.getAbsolutePath());
workspaceDir = this.scratch.createUnixTempDir();
workspaceDir.createDirectory();
client = new RPCTestingClient(outErr, serverDir.getRelative("server.socket"));
RPCService service = new RPCService(helloWorldCommand);
server =
new RPCServer(
new JavaClock(),
service,
MAX_IDLE_MILLIS,
HEALTH_CHECK_MILLIS,
serverDir,
workspaceDir);
serverThread.start();
}