Python QLocalSocket.write方法代码示例

# 需要导入模块: from PyQt5.QtNetwork import QLocalSocket [as 别名]
# 或者: from PyQt5.QtNetwork.QLocalSocket import write [as 别名]
    def _send_to_running_instance(self, payload: bytes, pid: int) -> None:
        from PyQt5.QtCore import QByteArray
        from PyQt5.QtNetwork import QLocalSocket

        named_pipe = f"{BUNDLE_IDENTIFIER}.protocol.{pid}"
        log.debug(
            f"Opening a local socket to the running instance on {named_pipe} "
            f"(payload={self.redact_payload(payload)})"
        )
        client = QLocalSocket()
        try:
            client.connectToServer(named_pipe)

            if not client.waitForConnected():
                log.error(f"Unable to open client socket: {client.errorString()}")
                return

            client.write(QByteArray(payload))
            client.waitForBytesWritten()
            client.disconnectFromServer()
            if client.state() == QLocalSocket.ConnectedState:
                client.waitForDisconnected()
        finally:
            del client
        log.debug("Successfully closed client socket")

# 需要导入模块: from PyQt5.QtNetwork import QLocalSocket [as 别名]
# 或者: from PyQt5.QtNetwork.QLocalSocket import write [as 别名]
class Client:
    def __init__(self):
        self.socket = QLocalSocket()
        self.socket.setServerName(piony.G_SOCKET_NAME)
        self.socket.error.connect(self.displayError)
        self.socket.disconnected.connect(self.socket.deleteLater)

    def _log_(self, text, *args):
        logger.info(self.__class__.__qualname__ + ': ' + text, *args)

    def connect(self):
        self.socket.abort()
        self._log_("connection attempt")
        self.socket.connectToServer()

    def send(self, argv):
        data = QByteArray()
        out = QDataStream(data, QIODevice.WriteOnly)
        out.setVersion(QDataStream.Qt_5_0)
        out.writeQVariant(argv)
        self._log_("writes: %s", str(data))
        self.socket.write(data)
        self.socket.flush()
        self.socket.disconnectFromServer()

    def displayError(self, err):
        msg = {
            QLocalSocket.ServerNotFoundError:
                "The host was not found. Check the host name and port.",
            QLocalSocket.ConnectionRefusedError:
                "The connection was refused by the peer. "
                "Check server is running, it's host and port.",
            QLocalSocket.PeerClosedError:
                "Peer was closed",  # None,
        }.get(err, "Client error: {}.".format(self.socket.errorString()))
        self._log_(msg)

# 需要导入模块: from PyQt5.QtNetwork import QLocalSocket [as 别名]
# 或者: from PyQt5.QtNetwork.QLocalSocket import write [as 别名]
    def startClient(self) -> bool:
        Logger.log("i", "Checking for the presence of an ready running Cura instance.")
        single_instance_socket = QLocalSocket(self._application)
        Logger.log("d", "Full single instance server name: %s", single_instance_socket.fullServerName())
        single_instance_socket.connectToServer("ultimaker-cura")
        single_instance_socket.waitForConnected(msecs = 3000)  # wait for 3 seconds

        if single_instance_socket.state() != QLocalSocket.ConnectedState:
            return False

        # We only send the files that need to be opened.
        if not self._files_to_open:
            Logger.log("i", "No file need to be opened, do nothing.")
            return True

        if single_instance_socket.state() == QLocalSocket.ConnectedState:
            Logger.log("i", "Connection has been made to the single-instance Cura socket.")

            # Protocol is one line of JSON terminated with a carriage return.
            # "command" field is required and holds the name of the command to execute.
            # Other fields depend on the command.

            payload = {"command": "clear-all"}
            single_instance_socket.write(bytes(json.dumps(payload) + "\n", encoding = "ascii"))

            payload = {"command": "focus"}
            single_instance_socket.write(bytes(json.dumps(payload) + "\n", encoding = "ascii"))

            for filename in self._files_to_open:
                payload = {"command": "open", "filePath": os.path.abspath(filename)}
                single_instance_socket.write(bytes(json.dumps(payload) + "\n", encoding = "ascii"))

            payload = {"command": "close-connection"}
            single_instance_socket.write(bytes(json.dumps(payload) + "\n", encoding = "ascii"))

            single_instance_socket.flush()
            single_instance_socket.waitForDisconnected()
        return True

# 需要导入模块: from PyQt5.QtNetwork import QLocalSocket [as 别名]
# 或者: from PyQt5.QtNetwork.QLocalSocket import write [as 别名]
class SingleApplicationClient(object):
    """
    Class implementing the single application client base class.
    """
    def __init__(self, name):
        """
        Constructor
        
        @param name name of the local server to connect to (string)
        """
        self.name = name
        self.connected = False
        
    def connect(self):
        """
        Public method to connect the single application client to its server.
        
        @return value indicating success or an error number. Value is one of:
            <table>
                <tr><td>0</td><td>No application is running</td></tr>
                <tr><td>1</td><td>Application is already running</td></tr>
            </table>
        """
        self.sock = QLocalSocket()
        self.sock.connectToServer(self.name)
        if self.sock.waitForConnected(10000):
            self.connected = True
            return 1
        else:
            err = self.sock.error()
            if err == QLocalSocket.ServerNotFoundError:
                return 0
            else:
                return -err
        
    def disconnect(self):
        """
        Public method to disconnect from the Single Appliocation server.
        """
        self.sock.disconnectFromServer()
        self.connected = False
    
    def processArgs(self, args):
        """
        Public method to process the command line args passed to the UI.
        
        <b>Note</b>: This method must be overridden by subclasses.
        
        @param args command line args (list of strings)
        @exception RuntimeError raised to indicate that this method must be
            implemented by a subclass
        """
        raise RuntimeError("'processArgs' must be overridden")
    
    def sendCommand(self, cmd):
        """
        Public method to send the command to the application server.
        
        @param cmd command to be sent (string)
        """
        if self.connected:
            self.sock.write(cmd)
            self.sock.flush()
        
    def errstr(self):
        """
        Public method to return a meaningful error string for the last error.
        
        @return error string for the last error (string)
        """
        return self.sock.errorString()