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package mill.main.client;
import org.scalasbt.ipcsocket.*;
import java.io.*;
import java.net.Socket;
import java.net.URISyntaxException;
import java.net.URL;
import java.nio.channels.FileChannel;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.*;
import java.lang.Math;
public class MillClientMain {
// use methods instead of constants to avoid inlining by compiler
public static final int ExitClientCodeCannotReadFromExitCodeFile() { return 1; }
public static final int ExitServerCodeWhenIdle() { return 0; }
public static final int ExitServerCodeWhenVersionMismatch() { return 101; }
static void initServer(String lockBase, boolean setJnaNoSys) throws IOException,URISyntaxException{
String[] selfJars = System.getProperty("MILL_CLASSPATH").split(",");
List<String> l = new ArrayList<>();
List<String> vmOptions = new ArrayList<>();
l.add(System.getProperty("java.home") + File.separator + "bin" + File.separator + "java");
final Properties props = System.getProperties();
for(final String k: props.stringPropertyNames()){
if (k.startsWith("MILL_") && !"MILL_CLASSPATH".equals(k)) {
vmOptions.add("-D" + k + "=" + props.getProperty(k));
}
}
if (setJnaNoSys) {
vmOptions.add("-Djna.nosys=true");
}
if(!Util.isWindows){
l.addAll(vmOptions);
} else {
final File vmOptionsFile = new File(lockBase, "vmoptions");
try (PrintWriter out = new PrintWriter(vmOptionsFile)) {
for(String opt: vmOptions)
out.println(opt);
}
l.add("-XX:VMOptionsFile=" + vmOptionsFile.getCanonicalPath());
}
l.add("-cp");
l.add(String.join(File.pathSeparator, selfJars));
l.add("mill.main.MillServerMain");
l.add(lockBase);
new ProcessBuilder()
.command(l)
.redirectOutput(new java.io.File(lockBase + "/logs"))
.redirectError(new java.io.File(lockBase + "/logs"))
.start();
}
private static String sha1HashPath(String path) throws NoSuchAlgorithmException, UnsupportedEncodingException {
MessageDigest md = MessageDigest.getInstance("SHA1");
md.reset();
byte[] pathBytes = path.getBytes("UTF-8");
md.update(pathBytes);
byte[] digest = md.digest();
return Base64.getEncoder().encodeToString(digest);
}
public static void main(String[] args) throws Exception{
System.exit(main0(args));
}
public static int main0(String[] args) throws Exception{
boolean setJnaNoSys = System.getProperty("jna.nosys") == null;
Map<String, String> env = System.getenv();
if (setJnaNoSys) {
System.setProperty("jna.nosys", "true");
}
int index = 0;
String jvmHomeEncoding = sha1HashPath(System.getProperty("java.home"));
File outFolder = new File("out");
String[] totalProcesses = outFolder.list((dir,name) -> name.startsWith("mill-worker-"));
String[] thisJdkProcesses = outFolder.list((dir,name) -> name.startsWith("mill-worker-" + jvmHomeEncoding));
int processLimit = 5;
if(totalProcesses != null) {
if(thisJdkProcesses != null) {
processLimit -= Math.min(totalProcesses.length - thisJdkProcesses.length, 5);
} else {
processLimit -= Math.min(totalProcesses.length, 5);
}
}
while (index < processLimit) {
index += 1;
String lockBase = "out/mill-worker-" + jvmHomeEncoding + "-" + index;
new java.io.File(lockBase).mkdirs();
try(RandomAccessFile lockFile = new RandomAccessFile(lockBase + "/clientLock", "rw");
FileChannel channel = lockFile.getChannel();
java.nio.channels.FileLock tryLock = channel.tryLock();
Locks locks = Locks.files(lockBase)){
if (tryLock != null) {
int exitCode = MillClientMain.run(
lockBase,
new Runnable() {
@Override
public void run() {
try{
initServer(lockBase, setJnaNoSys);
}catch(Exception e){
throw new RuntimeException(e);
}
}
},
locks,
System.in,
System.out,
System.err,
args,
env
);
return exitCode;
}
} finally{
}
}
throw new Exception("Reached max process limit: " + processLimit);
}
public static int run(String lockBase,
Runnable initServer,
Locks locks,
InputStream stdin,
OutputStream stdout,
OutputStream stderr,
String[] args,
Map<String, String> env) throws Exception{
try(FileOutputStream f = new FileOutputStream(lockBase + "/run")){
f.write(System.console() != null ? 1 : 0);
Util.writeString(f, System.getProperty("MILL_VERSION"));
Util.writeArgs(args, f);
Util.writeMap(env, f);
}
boolean serverInit = false;
if (locks.processLock.probe()) {
serverInit = true;
initServer.run();
}
while(locks.processLock.probe()) Thread.sleep(3);
// Need to give sometime for Win32NamedPipeSocket to work
// if the server is just initialized
if (serverInit && Util.isWindows) Thread.sleep(1000);
Socket ioSocket = null;
long retryStart = System.currentTimeMillis();
while(ioSocket == null && System.currentTimeMillis() - retryStart < 1000){
try{
ioSocket = Util.isWindows?
new Win32NamedPipeSocket(Util.WIN32_PIPE_PREFIX + new File(lockBase).getName())
: new UnixDomainSocket(lockBase + "/io");
}catch(Throwable e){
Thread.sleep(1);
}
}
if (ioSocket == null){
throw new Exception("Failed to connect to server");
}
InputStream outErr = ioSocket.getInputStream();
OutputStream in = ioSocket.getOutputStream();
ProxyStreamPumper outPump = new ProxyStreamPumper(outErr, stdout, stderr);
InputPumper inPump = new InputPumper(stdin, in, true);
Thread outThread = new Thread(outPump);
outThread.setDaemon(true);
Thread inThread = new Thread(inPump);
inThread.setDaemon(true);
outThread.start();
inThread.start();
locks.serverLock.await();
try(FileInputStream fis = new FileInputStream(lockBase + "/exitCode")){
return Integer.parseInt(new BufferedReader(new InputStreamReader(fis)).readLine());
} catch(Throwable e){
return ExitClientCodeCannotReadFromExitCodeFile();
} finally{
ioSocket.close();
}
}
}
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