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How to use daemon_log method in fMBT

Best Python code snippet using fMBT_python

server.py

Source:server.py

...48             datetime.datetime(1970, 1, 1)).total_seconds(),)49    else:50        rv = datetime.datetime.now().strftime("%s.%f")51    return rv52def daemon_log(msg):53    if opt_debug_limit >= 0:54        if len(msg) > opt_debug_limit:55            msg = (msg[:opt_debug_limit/2] +56                   ("...[%s B, log CRC %s]..." % (len(msg), messages.crc(msg))) +57                   msg[-opt_debug_limit/2:])58    formatted_msg = "%s %s\n" % (timestamp(), msg)59    if opt_log_fd != None:60        os.write(opt_log_fd, formatted_msg)61        if has_os_fdatasync:62            os.fdatasync(opt_log_fd)63    if opt_debug and opt_debug_limit != 0:64        sys.stdout.write(formatted_msg)65        sys.stdout.flush()66def code2string(code):67    return "\n".join(68        ["%-4s %s" % (li+1, l) for li, l in enumerate(code.splitlines())])69def exception2string(exc_info):70    return ''.join(traceback.format_exception(*exc_info))71def _store_return_value(func, queue):72    while True:73        queue.put(func())74def _read_lines_from_stdin(queue):75    while True:76        line = sys.stdin.readline()77        if not line:78            break79        queue.put(line)80    daemon_log("stdin closed")81class Pythonshare_ns(object):82    """Pythonshare services inside a namespace83    """84    def __init__(self, ns):85        self.ns = ns86        self._on_disconnect = []87        self._on_drop = []88    def ns_type(self, ns):89        """Query the type of a namespace.90        Returns "local" or "remote" if namespace exists, otherwise None.91        """92        if ns in _g_local_namespaces:93            return "local"94        elif ns in _g_remote_namespaces:95            return "remote"96        else:97            return None98    def local_nss(self):99        """List local namespaces100        """101        return _g_local_namespaces.keys()102    def remote_nss(self, ls_opts={}):103        """List remote namespaces104        """105        if "ip" in ls_opts and ls_opts["ip"] == True:106            key_peername = {}107            for k in _g_remote_namespaces.keys():108                try:109                    key_peername[k] = _g_remote_namespaces[k].conn.getpeername()110                except Exception:111                    key_peername[k] = ("?", "?")112            return key_peername113        return _g_remote_namespaces.keys()114    def on_disconnect(self):115        """Return codes that will be executed when a client has disconnected.116        """117        return self._on_disconnect118    def on_drop(self):119        """Return codes that will be executed when the namespace is dropped.120        """121        return self._on_drop122    def exec_on_disconnect(self, code, any_connection=False):123        """Add code that will be executed when client has disconnected.124        """125        if not any_connection:126            conn_id = _g_executing_pythonshare_conn_id127        else:128            conn_id = None129        self._on_disconnect.append((conn_id, code))130    def exec_on_drop(self, code):131        """Add code that will be executed when namespace is dropped.132        """133        self._on_drop.append(code)134    def set_on_disconnect(self, list_of_code):135        """Replace all "on disconnect" codes with new list of codes.136        """137        self._on_disconnect = list_of_code138    def set_on_drop(self, list_of_code):139        """Replace all "on drop" codes with new list of codes."""140        self._on_drop = list_of_code141    def call_on_disconnect(self, conn_id):142        for setter_conn_id, code in self._on_disconnect:143            if not setter_conn_id or setter_conn_id == conn_id:144                exec_msg = messages.Exec(self.ns, code, None)145                if opt_debug:146                    daemon_log("on disconnect %s: %s" % (conn_id, exec_msg,))147                rv = _local_execute(exec_msg)148                if opt_debug:149                    daemon_log("on disconnect rv: %s" % (rv,))150                if setter_conn_id == conn_id:151                    self._on_disconnect.remove((conn_id, code))152    def call_on_drop(self):153        for code in self._on_drop:154            exec_msg = messages.Exec(self.ns, code, None)155            if opt_debug:156                daemon_log("on drop: %s" % (exec_msg,))157            rv = _local_execute(exec_msg)158            if opt_debug:159                daemon_log("on drop rv: %s" % (rv,))160    def read_rv(self, async_rv):161        """Return and remove asynchronous return value.162        """163        if self.ns != async_rv.ns:164            raise ValueError("Namespace mismatch")165        if (async_rv.ns in _g_async_rvs and166            async_rv.rvid in _g_async_rvs[async_rv.ns]):167            rv = _g_async_rvs[async_rv.ns][async_rv.rvid]168            if not isinstance(rv, pythonshare.InProgress):169                del _g_async_rvs[async_rv.ns][async_rv.rvid]170            return rv171        else:172            raise ValueError('Invalid return value id: "%s"'173                             % (async_rv.rvid,))174    def poll_rvs(self):175        """Returns list of Async_rv instances that are ready for reading.176        """177        rv = []178        for rvid, value in _g_async_rvs[self.ns].iteritems():179            if not isinstance(value, pythonshare.InProgress):180                rv.append(messages.Async_rv(self.ns, rvid))181        return rv182class Pythonshare_rns(object):183    """Remote namespace"""184    def __init__(self, conn, to_remote, from_remote):185        self.conn = conn186        self.to_remote = to_remote187        self.from_remote = from_remote188    def __del__(self):189        pythonshare._close(self.conn, self.to_remote, self.from_remote)190_g_local_namespaces = {}191# client-id -> set of namespaces192_g_namespace_users = {}193_g_executing_pythonshare_conn_id = None194# _g_remote_namespaces: namespace -> Connection to origin195_g_remote_namespaces = {}196# _g_namespace_exports: namespace -> list of Connections to which the197# namespace (remote or local) has been exported. If the namespace is198# deleted (or connection to origin is lost), these Connection objects199# are to be notified.200_g_namespace_exports = {}201_g_local_namespace_locks = {}202_g_async_rvs = {}203_g_async_rv_counter = 0204_g_server_shutdown = False205def _init_local_namespace(ns, init_code=None, force=False):206    if not ns in _g_local_namespaces:207        if opt_allow_new_namespaces or force:208            daemon_log('added local namespace "%s"' % (ns,))209            _g_local_namespaces[ns] = {210                "pythonshare_ns": Pythonshare_ns(ns),211                "Async_rv": pythonshare.messages.Async_rv212            }213            _g_local_namespace_locks[ns] = thread.allocate_lock()214            _g_async_rvs[ns] = {}215        else:216            raise ValueError('Unknown namespace "%s"' % (ns,))217    if init_code != None:218        if isinstance(init_code, basestring):219            try:220                exec init_code in _g_local_namespaces[ns]221            except Exception, e:222                daemon_log('namespace "%s" init error in <string>:\n%s\n\n%s' % (223                    ns, code2string(init_code), exception2string(sys.exc_info())))224        elif isinstance(init_code, dict):225            # Directly use the dictionary (locals() or globals(), for226            # instance) as a Pythonshare namespace.227            clean_ns = _g_local_namespaces[ns]228            _g_local_namespaces[ns] = init_code229            _g_local_namespaces[ns].update(clean_ns) # copy pythonshare defaults230        else:231            raise TypeError("unsupported init_code type")232def _drop_local_namespace(ns):233    daemon_log('drop local namespace "%s"' % (ns,))234    _g_local_namespaces[ns]["pythonshare_ns"].call_on_drop()235    del _g_local_namespaces[ns]236    del _g_local_namespace_locks[ns]237    del _g_async_rvs[ns]238    # send notification to all connections in _g_namespace_exports[ns]?239def _drop_remote_namespace(ns):240    daemon_log('drop remote namespace "%s"' % (ns,))241    try:242        rns = _g_remote_namespaces[ns]243        del _g_remote_namespaces[ns]244        rns.__del__()245    except KeyError:246        pass # already dropped247    # send notification to all connections in _g_namespace_exports[ns]?248def _init_remote_namespace(ns, conn, to_remote, from_remote):249    if ns in _g_remote_namespaces:250        raise ValueError('Remote namespace "%s" already registered' % (251            ns,))252    daemon_log('added remote namespace "%s", origin "%s"' % (253        ns, conn.getpeername()))254    _g_remote_namespaces[ns] = Pythonshare_rns(conn, to_remote, from_remote)255def _register_exported_namespace(ns, conn):256    if not ns in _g_namespace_exports:257        _g_namespace_exports[ns] = []258    _g_namespace_exports[ns].append(conn)259def _local_execute(exec_msg, conn_id=None):260    global _g_executing_pythonshare_conn_id261    ns = exec_msg.namespace262    if not ns in _g_local_namespaces:263        code_exc = expr_exc = "no local namespace %s" % (ns,)264        return messages.Exec_rv(code_exc, expr_exc, None)265    if conn_id:266        if not conn_id in _g_namespace_users:267            _g_namespace_users[conn_id] = set([ns])268        else:269            _g_namespace_users[conn_id].add(ns)270    code_exc, expr_exc, expr_rv = None, None, None271    if not exec_msg.lock or _g_local_namespace_locks[ns].acquire():272        _g_executing_pythonshare_conn_id = conn_id273        try:274            if exec_msg.code not in [None, ""]:275                try:276                    exec exec_msg.code in _g_local_namespaces[ns]277                except Exception, e:278                    code_exc = exception2string(sys.exc_info())279            if exec_msg.expr not in [None, ""]:280                try:281                    expr_rv = eval(exec_msg.expr, _g_local_namespaces[ns])282                except Exception, e:283                    expr_exc = exception2string(sys.exc_info())284        finally:285            _g_executing_pythonshare_conn_id = None286            if exec_msg.lock:287                try:288                    _g_local_namespace_locks[ns].release()289                except thread.error:290                    pass # already unlocked namespace291    else:292        code_exc = expr_exc = 'locking namespace "%s" failed' % (ns,)293    if isinstance(expr_rv, pythonshare.messages.Exec_rv):294        return expr_rv295    else:296        return messages.Exec_rv(code_exc, expr_exc, expr_rv)297def _local_async_execute(async_rv, exec_msg):298    exec_rv = _local_execute(exec_msg)299    _g_async_rvs[exec_msg.namespace][async_rv.rvid] = exec_rv300def _remote_execute(ns, exec_msg):301    rns = _g_remote_namespaces[ns]302    pythonshare._send(exec_msg, rns.to_remote)303    # _recv raises EOFError() if disconnected,304    # let it raise through.305    return pythonshare._recv(rns.from_remote)306def _remote_execute_and_forward(ns, exec_msg, to_client, peername=None):307    """returns (forward_status, info)308    forward_status values:309       True:  everything successfully forwarded,310              info contains pair (forwarded byte count, full length).311       False: not everything forwarded,312              info contains pair (forwarded byte count, full length).313              to_client file/socket is not functional.314       None:  no forwarding,315              info contains Exec_rv that should be sent normally.316    Raises EOFError if connection to remote namespace is not functional.317    The peername parameter is used for logging only.318    """319    client_supports_rv_info = exec_msg.recv_cap_data_info()320    exec_msg.set_recv_cap_data_info(True)321    rns = _g_remote_namespaces[ns]322    from_remote = rns.from_remote323    # Must keep simultaneously two locks:324    # - send lock on to_client325    # - recv lock on from_remote326    pythonshare._acquire_recv_lock(from_remote)327    try:328        pythonshare._send(exec_msg, rns.to_remote)329        response = pythonshare._recv(from_remote, acquire_recv_lock=False)330        if not isinstance(response, messages.Data_info):331            # Got direct response without forward mode332            return (None, response)333        pythonshare._acquire_send_lock(to_client)334        if client_supports_rv_info:335            # send data_info to client336            pythonshare._send(response, to_client, acquire_send_lock=False)337        try:338            if opt_debug and peername:339                daemon_log("%s:%s <= Exec_rv([forwarding %s B])" % (peername + (response.data_length,)))340            forwarded_bytes = pythonshare._forward(341                from_remote, to_client, response.data_length,342                acquire_recv_lock=False,343                acquire_send_lock=False)344            if forwarded_bytes == response.data_length:345                return (True, (forwarded_bytes, response.data_length))346            else:347                return (False, (forwarded_bytes, response.data_length))348        finally:349            pythonshare._release_send_lock(to_client)350    finally:351        exec_msg.set_recv_cap_data_info(client_supports_rv_info)352        pythonshare._release_recv_lock(from_remote)353def _connection_lost(conn_id, *closables):354    if closables:355        pythonshare._close(*closables)356    try:357        for ns in _g_namespace_users[conn_id]:358            try:359                _g_local_namespaces[ns]["pythonshare_ns"].call_on_disconnect(conn_id)360            except KeyError:361                pass362    except KeyError:363        pass364def _serve_connection(conn, conn_opts):365    global _g_async_rv_counter366    global _g_server_shutdown367    if isinstance(conn, client.Connection):368        to_client = conn._to_server369        from_client = conn._from_server370    else: # conn is a connected socket371        to_client = conn.makefile("w")372        from_client = conn.makefile("r")373    try:374        peername = conn.getpeername()375    except socket.error:376        peername = ("unknown", "?")377    if opt_debug:378        daemon_log("connected %s:%s" % peername)379    conn_id = "%s-%s" % (timestamp(), id(conn))380    auth_ok = False381    passwords = [k for k in conn_opts.keys() if k.startswith("password.")]382    kill_server_on_close = conn_opts.get("kill-server-on-close", False)383    if passwords:384        # password authentication is required for this connection385        try:386            received_password = pythonshare._recv(from_client)387        except Exception, e:388            daemon_log('error receiving password: %r' % (e,))389            received_password = None390        for password_type in passwords:391            algorithm = password_type.split(".")[1]392            if type(received_password) == str:393                if (algorithm == "plaintext" and394                    received_password == conn_opts[password_type]):395                    auth_ok = True396                elif (hasattr(hashlib, algorithm) and397                      getattr(hashlib, algorithm)(received_password).hexdigest() ==398                      conn_opts[password_type]):399                    auth_ok = True400        try:401            if auth_ok:402                pythonshare._send(messages.Auth_rv(True), to_client)403                if opt_debug:404                    daemon_log("%s:%s authentication ok" % peername)405            elif not received_password is None:406                pythonshare._send(messages.Auth_rv(False), to_client)407                if opt_debug:408                    daemon_log("%s:%s authentication failed" % peername)409        except socket.error:410            daemon_log("authentication failed due to socket error")411            auth_ok = False412    else:413        auth_ok = True # no password required414    whitelist_local = conn_opts.get("whitelist_local", None)415    while auth_ok:416        try:417            obj = pythonshare._recv(from_client)418            if opt_debug:419                daemon_log("%s:%s => %s" % (peername + (obj,)))420        except (EOFError, pythonshare.socket.error):421            break422        if isinstance(obj, messages.Register_ns):423            try:424                _init_remote_namespace(obj.ns, conn, to_client, from_client)425                pythonshare._send(messages.Ns_rv(True), to_client)426                # from this point on, this connection is reserved for427                # sending remote namespace traffic. The connection will be428                # used by other threads, this thread stops here.429                return430            except Exception, e:431                pythonshare._send(messages.Ns_rv(False, exception2string(sys.exc_info())), to_client)432        elif isinstance(obj, messages.Drop_ns):433            try:434                if obj.ns in _g_local_namespaces:435                    _drop_local_namespace(obj.ns)436                elif obj.ns in _g_remote_namespaces:437                    _drop_remote_namespace(obj.ns)438                else:439                    raise ValueError('Unknown namespace "%s"' % (obj.ns,))440                pythonshare._send(messages.Ns_rv(True), to_client)441            except Exception, e:442                if opt_debug:443                    daemon_log("namespace drop error: %s" % (e,))444                pythonshare._send(messages.Ns_rv(False, exception2string(sys.exc_info())), to_client)445        elif isinstance(obj, messages.Request_ns):446            ns = obj.ns447            if (ns in _g_remote_namespaces or448                ns in _g_local_namespaces):449                _register_exported_namespace(ns, conn)450                pythonshare._send(messages.Ns_rv(True), to_client)451                # from this point on, this connection is reserved for452                # receiving executions on requested namespace. This453                # thread starts serving the connection.454        elif isinstance(obj, messages.Exec):455            ns = obj.namespace456            if ns in _g_remote_namespaces: # execute in remote namespace457                try:458                    _fwd_status, _fwd_info = _remote_execute_and_forward(459                        ns, obj, to_client, peername)460                    if _fwd_status == True:461                        # successfully forwarded462                        if opt_debug:463                            daemon_log("%s:%s forwarded %s B" % (peername + (_fwd_info[0],)))464                        exec_rv = None # return value fully forwarded465                    elif _fwd_status == False:466                        # connection to client is broken467                        if opt_debug:468                            daemon_log("%s:%s error after forwarding %s/%s B" % (peername + _fwd_info))469                        break470                    elif _fwd_status is None:471                        # nothing forwarded, send return value by normal means472                        exec_rv = _fwd_info473                except (EOFError, socket.error):474                    daemon_log('connection lost to "%s"' % (ns,))475                    _drop_remote_namespace(ns)476                    break477            else: # execute in local namespace478                if whitelist_local == None or ns in whitelist_local:479                    _init_local_namespace(ns)480                if obj.async:481                    # asynchronous execution, return handle (Async_rv)482                    _g_async_rv_counter += 1483                    rvid = timestamp() + str(_g_async_rv_counter)484                    exec_rv = messages.Async_rv(ns, rvid)485                    _g_async_rvs[ns][rvid] = pythonshare.InProgress()486                    thread.start_new_thread(_local_async_execute, (exec_rv, obj))487                else:488                    # synchronous execution, return true return value489                    exec_rv = _local_execute(obj, conn_id)490            if not exec_rv is None:491                if opt_debug:492                    daemon_log("%s:%s <= %s" % (peername + (exec_rv,)))493                try:494                    try:495                        if obj.recv_cap_data_info():496                            info = pythonshare._send_opt(exec_rv, to_client, obj.recv_caps)497                            if info:498                                sent_info = " %s B, format:%s" % (499                                    info.data_length, info.data_format)500                            else:501                                sent_info = ""502                        else:503                            pythonshare._send(exec_rv, to_client)504                            sent_info = ""505                        if opt_debug:506                            daemon_log("%s:%s sent%s" % (peername + (sent_info,)))507                    except (EOFError, socket.error):508                        break509                except (TypeError, ValueError, cPickle.PicklingError): # pickling rv fails510                    exec_rv.expr_rv = messages.Unpicklable(exec_rv.expr_rv)511                    try:512                        pythonshare._send(exec_rv, to_client)513                    except (EOFError, socket.error):514                        break515        elif isinstance(obj, messages.Server_ctl):516            if obj.command == "die":517                ns = obj.args[0]518                if ns in _g_remote_namespaces:519                    try:520                        rv = _remote_execute(ns, obj)521                        if opt_debug:522                            daemon_log("%s:%s <= %s" % (peername + (rv,)))523                        pythonshare._send(rv, to_client)524                    except (EOFError, socket.error): # connection lost525                        daemon_log('connection lost to "%s"' % (ns,))526                        _drop_remote_namespace(ns)527                        break528                else:529                    _g_server_shutdown = True530                    server_ctl_rv = messages.Server_ctl_rv(0, "shutting down")531                    pythonshare._send(server_ctl_rv, to_client)532                    if _g_wake_server_function:533                        _g_wake_server_function()534                    break535            elif obj.command == "unlock":536                try:537                    ns = obj.args[0]538                    if ns in _g_remote_namespaces:539                        try:540                            rv = _remote_execute(ns, obj)541                        except (EOFError, socket.error): # connection lost542                            daemon_log('connection lost to "%s"' % (ns,))543                            _drop_remote_namespace(ns)544                            break545                    elif ns in _g_local_namespace_locks:546                        try:547                            _g_local_namespace_locks[ns].release()548                            server_ctl_rv = messages.Server_ctl_rv(549                                0, "%s unlocked" % (repr(ns),))550                        except thread.error, e:551                            server_ctl_rv = messages.Server_ctl_rv(552                                1, "%s already unlocked" %553                                (repr(ns),))554                    elif ns in _g_local_namespaces:555                        server_ctl_rv = messages.Server_ctl_rv(556                            2, "namespace %s is not locked" % (repr(ns),))557                    else:558                        server_ctl_rv = messages.Server_ctl_rv(559                            -1, "unknown namespace %s" % (repr(ns),))560                    if opt_debug:561                        daemon_log("%s:%s <= %s" % (peername + (server_ctl_rv,)))562                    pythonshare._send(server_ctl_rv, to_client)563                except Exception, e:564                    if opt_debug:565                        daemon_log("Exception in handling %s: %s" % (obj, e))566        else:567            daemon_log("unknown message type: %s in %s" % (type(obj), obj))568            pythonshare._send(messages.Auth_rv(False), to_client)569            auth_ok = False570    if opt_debug:571        daemon_log("disconnected %s:%s" % peername)572    _connection_lost(conn_id, to_client, from_client, conn)573    if kill_server_on_close:574        _g_server_shutdown = True575        if _g_wake_server_function:576            _g_wake_server_function()577def start_server(host, port,578                 ns_init_import_export=[],579                 conn_opts={},580                 listen_stdin=True):581    global _g_wake_server_function582    global _g_waker_lock583    daemon_log("pid: %s" % (os.getpid(),))584    # Initialise, import and export namespaces585    for task, ns, arg in ns_init_import_export:586        if task == "init":587            # If arg is a string, it will be executed in ns.588            # If arg is a dict, it will be used as ns.589            _init_local_namespace(ns, arg, force=True)590        elif task == "export":591            # Make sure ns exists before exporting.592            _init_local_namespace(ns, None, force=True)593            daemon_log('exporting "%s" to %s' % (ns, arg))594            try:595                c = pythonshare.connection(arg)596            except Exception, e:597                daemon_log('connecting to %s failed: %s' % (arg, e))598                return599            if c.export_ns(ns):600                _register_exported_namespace(ns, c)601                thread.start_new_thread(602                    _serve_connection, (c, {"kill-server-on-close": True}))603            else:604                raise ValueError('Export namespace "%s" to "%s" failed'605                                 % (ns, arg))606        elif task == "import":607            if (ns in _g_local_namespaces or608                ns in _g_remote_namespaces):609                raise ValueError('Import failed, namespace "%s" already exists'610                                 % (ns,))611            c = pythonshare.connection(arg)612            if c.import_ns(ns):613                _init_remote_namespace(ns, c, c._to_server, c._from_server)614    try:615        addrinfos = socket.getaddrinfo(host, port, socket.AF_INET, socket.SOCK_STREAM)616        for addrinfo in addrinfos:617            daemon_log("listen: %s:%s" % (addrinfo[4][0], addrinfo[4][1]))618    except socket.error:619        daemon_log("listen: %s:%s" % (host, port))620    if isinstance(port, int):621        def wake_server_function():622            _g_waker_lock.release() # wake up server623        _g_wake_server_function = wake_server_function624        _g_waker_lock = thread.allocate_lock()625        _g_waker_lock.acquire() # unlocked626        # Start listening to the port627        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)628        try:629            s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)630        except:631            pass632        s.bind((host, port))633        s.listen(4)634        event_queue = Queue.Queue()635        thread.start_new_thread(_store_return_value, (s.accept, event_queue))636        thread.start_new_thread(_store_return_value, (_g_waker_lock.acquire, event_queue))637        if not sys.stdin.closed and listen_stdin:638            daemon_log("listening to stdin")639            thread.start_new_thread(_read_lines_from_stdin, (event_queue,))640        else:641            daemon_log("not listening stdin")642        while 1:643            event = event_queue.get()644            if isinstance(event, tuple):645                # returned from s.accept646                conn, _ = event647                thread.start_new_thread(_serve_connection, (conn, conn_opts))648            elif event == True:649                # returned from _g_waker_lock.acquire650                daemon_log("shutting down.")651                break652            else:653                # returned from sys.stdin.readline654                pass655    elif port == "stdin":656        opt_debug_limit = 0657        if os.name == "nt":658            import msvcrt659            msvcrt.setmode(sys.stdin.fileno(), os.O_BINARY)660            msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)661        conn = client.Connection(sys.stdin, sys.stdout)662        _serve_connection(conn, conn_opts)663    for ns in sorted(_g_remote_namespaces.keys()):664        _drop_remote_namespace(ns)...

ninja_scons_daemon.py

Source:ninja_scons_daemon.py

...68    filemode="a",69    format="%(asctime)s %(message)s",70    level=logging.DEBUG,71)72def daemon_log(message):73    logging.debug(message)74def custom_readlines(handle, line_separator="\n", chunk_size=1):75    buf = ""76    while not handle.closed:77        data = handle.read(chunk_size)78        if not data:79            break80        buf += data.decode("utf-8")81        if line_separator in buf:82            chunks = buf.split(line_separator)83            buf = chunks.pop()84            for chunk in chunks:85                yield chunk + line_separator86        if buf.endswith("scons>>>"):87            yield buf88            buf = ""89def custom_readerr(handle, line_separator="\n", chunk_size=1):90    buf = ""91    while not handle.closed:92        data = handle.read(chunk_size)93        if not data:94            break95        buf += data.decode("utf-8")96        if line_separator in buf:97            chunks = buf.split(line_separator)98            buf = chunks.pop()99            for chunk in chunks:100                yield chunk + line_separator101def enqueue_output(out, queue):102    for line in iter(custom_readlines(out)):103        queue.put(line)104    out.close()105def enqueue_error(err, queue):106    for line in iter(custom_readerr(err)):107        queue.put(line)108    err.close()109input_q = queue.Queue()110output_q = queue.Queue()111error_q = queue.Queue()112building_cv = Condition()113error_cv = Condition()114class StateInfo:115    def __init__(self) -> None:116        self.thread_error = False117        self.finished_building = []118        self.error_nodes = []119        self.startup_failed = False120        self.startup_output = ''121        self.daemon_needs_to_shutdown = False122        self.httpd = None123shared_state = StateInfo()124def sigint_func(signum, frame):125    global shared_state126    shared_state.daemon_needs_to_shutdown = True127signal.signal(signal.SIGINT, sigint_func)128def daemon_thread_func():129    global shared_state130    try:131        args_list = args + ["--interactive"]132        daemon_log(f"Starting daemon with args: {' '.join(args_list)}")133        daemon_log(f"cwd: {os.getcwd()}")134        p = Popen(args_list, stdout=PIPE, stderr=PIPE, stdin=PIPE)135        t = threading.Thread(target=enqueue_output, args=(p.stdout, output_q))136        t.daemon = True137        t.start()138        te = threading.Thread(target=enqueue_error, args=(p.stderr, error_q))139        te.daemon = True140        te.start()141        daemon_ready = False142        143        building_node = None144        startup_complete = False145        # While scons interactive process is stil running...146        while p.poll() is None:147            # while there is scons output to process148            while True:149                try:150                    line = output_q.get(block=False, timeout=0.01)151                except queue.Empty:152                    # breaks out of the output processing loop153                    break154                else:155                    daemon_log("output: " + line.strip())156                    if not startup_complete:157                        shared_state.startup_output += line158                    if "scons: building terminated because of errors." in line:159                        error_output = ""160                        while True:161                            try:162                                error_output += error_q.get(block=False, timeout=0.01)163                            except queue.Empty:164                                break165                        shared_state.error_nodes += [{"node": building_node, "error": error_output}]166                        daemon_ready = True167                        building_node = None168                        with building_cv:169                            building_cv.notify()170                    elif line == "scons>>>":171                        shared_state.startup_output = ''172                        startup_complete = True173                        with error_q.mutex:174                            error_q.queue.clear()175                        daemon_ready = True176                        with building_cv:177                            building_cv.notify()178                        building_node = None179            # while there is input to process...180            while daemon_ready and not input_q.empty():181                try:182                    building_node = input_q.get(block=False, timeout=0.01)183                except queue.Empty:184                    break185                if "exit" in building_node:186                    daemon_log("input: " + "exit")187                    p.stdin.write("exit\n".encode("utf-8"))188                    p.stdin.flush()189                    with building_cv:190                        shared_state.finished_building += [building_node]191                    daemon_ready = False192                    shared_state.daemon_needs_to_shutdown = True193                    break194                else:195                    input_command = "build " + building_node + "\n"196                    daemon_log("input: " + input_command.strip())197                    p.stdin.write(input_command.encode("utf-8"))198                    p.stdin.flush()199                    with building_cv:200                        shared_state.finished_building += [building_node]201                    daemon_ready = False202            if shared_state.daemon_needs_to_shutdown:203                break204            time.sleep(0.01)205        # our scons process is done, make sure we are shutting down in this case206        if not shared_state.daemon_needs_to_shutdown:207            if not startup_complete:208                shared_state.startup_failed = True209            shared_state.daemon_needs_to_shutdown = True210    except Exception:211        shared_state.thread_error = True212        daemon_log("SERVER ERROR: " + traceback.format_exc())213        raise214daemon_thread = threading.Thread(target=daemon_thread_func)215daemon_thread.daemon = True216daemon_thread.start()217logging.debug(218    f"Starting request server on port {port}, keep alive: {daemon_keep_alive}"219)220keep_alive_timer = timer()221def server_thread_func():222    global shared_state223    class S(http.server.BaseHTTPRequestHandler):224        def do_GET(self):225            global shared_state226            global keep_alive_timer227            try:228                gets = parse_qs(urlparse(self.path).query)229                230                # process a request from ninja for a node for scons to build. 231                # Currently this is a serial process because scons interactive is serial232                # is it was originally meant for a real human user to be providing input233                # parallel input was never implemented.234                build = gets.get("build")235                if build:236                    keep_alive_timer = timer()237                    daemon_log(f"Got request: {build[0]}")238                    input_q.put(build[0])239                    def pred():240                        return build[0] in shared_state.finished_building241                    with building_cv:242                        building_cv.wait_for(pred)243                    for error_node in shared_state.error_nodes:244                        if error_node["node"] == build[0]:245                            self.send_response(500)246                            self.send_header("Content-type", "text/html")247                            self.end_headers()248                            self.wfile.write(error_node["error"].encode())249                            return250                    self.send_response(200)251                    self.send_header("Content-type", "text/html")252                    self.end_headers()253                    return254                # this message is used in server startup, to make sure the server launched255                # successfully. If SCons interactive got to a input prompt (scons>>>), then256                # the server is ready to start processing commands. Otherwise the server will257                # send an error response back to ninja and shut itself down.258                ready = gets.get("ready")259                if ready:260                    if shared_state.startup_failed:261                        self.send_response(500)262                        self.send_header("Content-type", "text/html")263                        self.end_headers()264                        self.wfile.write(shared_state.startup_output.encode())265                        return266                exitbuild = gets.get("exit")267                if exitbuild:268                    input_q.put("exit")269                self.send_response(200)270                self.send_header("Content-type", "text/html")271                self.end_headers()272            except Exception:273                shared_state.thread_error = True274                daemon_log("SERVER ERROR: " + traceback.format_exc())275                raise276            def log_message(self, format, *args):277                return278    socketserver.TCPServer.allow_reuse_address = True279    shared_state.httpd = socketserver.TCPServer(("127.0.0.1", port), S)280    shared_state.httpd.serve_forever()281server_thread = threading.Thread(target=server_thread_func)282server_thread.daemon = True283server_thread.start()284while (timer() - keep_alive_timer < daemon_keep_alive 285        and not shared_state.thread_error 286        and not shared_state.daemon_needs_to_shutdown):287    time.sleep(1)288if shared_state.thread_error:289    daemon_log(f"Shutting server on port {port} down because thread error.")290elif shared_state.daemon_needs_to_shutdown:291    daemon_log("Server shutting down upon request.")292else:293    daemon_log(294        f"Shutting server on port {port} down because timed out: {daemon_keep_alive}"295    )296shared_state.httpd.shutdown()297if os.path.exists(ninja_builddir / "scons_daemon_dirty"):298    os.unlink(ninja_builddir / "scons_daemon_dirty")299if os.path.exists(daemon_dir / "pidfile"):300    os.unlink(daemon_dir / "pidfile")301# Local Variables:302# tab-width:4303# indent-tabs-mode:nil304# End:...

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