Python buffered_pipe.BufferedPipe类代码示例

    def __init__(self, chanid):
        """
        Create a new channel.  The channel is not associated with any
        particular session or `.Transport` until the Transport attaches it.
        Normally you would only call this method from the constructor of a
        subclass of `.Channel`.

        :param int chanid:
            the ID of this channel, as passed by an existing `.Transport`.
        """
        #: Channel ID
        self.chanid = chanid
        #: Remote channel ID
        self.remote_chanid = 0
        #: `.Transport` managing this channel
        self.transport = None
        #: Whether the connection is presently active
        self.active = False
        self.eof_received = 0
        self.eof_sent = 0
        self.in_buffer = BufferedPipe()
        self.in_stderr_buffer = BufferedPipe()
        self.timeout = None
        #: Whether the connection has been closed
        self.closed = False
        self.ultra_debug = False
        self.lock = threading.Lock()
        self.out_buffer_cv = threading.Condition(self.lock)
        self.in_window_size = 0
        self.out_window_size = 0
        self.in_max_packet_size = 0
        self.out_max_packet_size = 0
        self.in_window_threshold = 0
        self.in_window_sofar = 0
        self.status_event = threading.Event()
        self._name = str(chanid)
        self.logger = util.get_logger('paramiko.transport')
        self._pipe = None
        self.event = threading.Event()
        self.event_ready = False
        self.combine_stderr = False
        self.exit_status = -1
        self.origin_addr = None

    def __init__(self, chanid):
        """
        Create a new channel.  The channel is not associated with any
        particular session or L{Transport} until the Transport attaches it.
        Normally you would only call this method from the constructor of a
        subclass of L{Channel}.

        @param chanid: the ID of this channel, as passed by an existing
            L{Transport}.
        @type chanid: int
        """
        self.chanid = chanid
        self.remote_chanid = 0
        self.transport = None
        self.active = False
        self.eof_received = 0
        self.eof_sent = 0
        self.in_buffer = BufferedPipe()
        self.in_stderr_buffer = BufferedPipe()
        self.timeout = None
        self.closed = False
        self.ultra_debug = False
        self.lock = threading.Lock()
        self.out_buffer_cv = threading.Condition(self.lock)
        self.in_window_size = 0
        self.out_window_size = 0
        self.in_max_packet_size = 0
        self.out_max_packet_size = 0
        self.in_window_threshold = 0
        self.in_window_sofar = 0
        self.status_event = threading.Event()
        self._name = str(chanid)
        self.logger = util.get_logger("paramiko.transport")
        self._pipe = None
        self.event = threading.Event()
        self.event_ready = False
        self.combine_stderr = False
        self.exit_status = -1
        self.origin_addr = None

 def test_2_delay(self):
     p = BufferedPipe()
     self.assert_(not p.read_ready())
     threading.Thread(target=delay_thread, args=(p,)).start()
     self.assertEquals('a', p.read(1, 0.1))
     try:
         p.read(1, 0.1)
         self.assert_(False)
     except PipeTimeout:
         pass
     self.assertEquals('b', p.read(1, 1.0))
     self.assertEquals('', p.read(1))

class Channel (ClosingContextManager):
    """
    A secure tunnel across an SSH `.Transport`.  A Channel is meant to behave
    like a socket, and has an API that should be indistinguishable from the
    Python socket API.

    Because SSH2 has a windowing kind of flow control, if you stop reading data
    from a Channel and its buffer fills up, the server will be unable to send
    you any more data until you read some of it.  (This won't affect other
    channels on the same transport -- all channels on a single transport are
    flow-controlled independently.)  Similarly, if the server isn't reading
    data you send, calls to `send` may block, unless you set a timeout.  This
    is exactly like a normal network socket, so it shouldn't be too surprising.
    
    Instances of this class may be used as context managers.
    """

    def __init__(self, chanid):
        """
        Create a new channel.  The channel is not associated with any
        particular session or `.Transport` until the Transport attaches it.
        Normally you would only call this method from the constructor of a
        subclass of `.Channel`.

        :param int chanid:
            the ID of this channel, as passed by an existing `.Transport`.
        """
        self.chanid = chanid
        self.remote_chanid = 0
        self.transport = None
        self.active = False
        self.eof_received = 0
        self.eof_sent = 0
        self.in_buffer = BufferedPipe()
        self.in_stderr_buffer = BufferedPipe()
        self.timeout = None
        self.closed = False
        self.ultra_debug = False
        self.lock = threading.Lock()
        self.out_buffer_cv = threading.Condition(self.lock)
        self.in_window_size = 0
        self.out_window_size = 0
        self.in_max_packet_size = 0
        self.out_max_packet_size = 0
        self.in_window_threshold = 0
        self.in_window_sofar = 0
        self.status_event = threading.Event()
        self._name = str(chanid)
        self.logger = util.get_logger('paramiko.transport')
        self._pipe = None
        self.event = threading.Event()
        self.event_ready = False
        self.combine_stderr = False
        self.exit_status = -1
        self.origin_addr = None

    def __del__(self):
        try:
            self.close()
        except:
            pass

    def __repr__(self):
        """
        Return a string representation of this object, for debugging.
        """
        out = '<paramiko.Channel %d' % self.chanid
        if self.closed:
            out += ' (closed)'
        elif self.active:
            if self.eof_received:
                out += ' (EOF received)'
            if self.eof_sent:
                out += ' (EOF sent)'
            out += ' (open) window=%d' % self.out_window_size
            if len(self.in_buffer) > 0:
                out += ' in-buffer=%d' % (len(self.in_buffer),)
        out += ' -> ' + repr(self.transport)
        out += '>'
        return out

    @open_only
    def get_pty(self, term='vt100', width=80, height=24, width_pixels=0,
                height_pixels=0):
        """
        Request a pseudo-terminal from the server.  This is usually used right
        after creating a client channel, to ask the server to provide some
        basic terminal semantics for a shell invoked with `invoke_shell`.
        It isn't necessary (or desirable) to call this method if you're going
        to exectue a single command with `exec_command`.

        :param str term: the terminal type to emulate (for example, ``'vt100'``)
        :param int width: width (in characters) of the terminal screen
        :param int height: height (in characters) of the terminal screen
        :param int width_pixels: width (in pixels) of the terminal screen
        :param int height_pixels: height (in pixels) of the terminal screen

        :raises SSHException:
            if the request was rejected or the channel was closed
        """
#.........这里部分代码省略.........

 def test_3_close_while_reading(self):
     p = BufferedPipe()
     threading.Thread(target=close_thread, args=(p,)).start()
     data = p.read(1, 1.0)
     self.assertEquals('', data)

 def test_1_buffered_pipe(self):
     p = BufferedPipe()
     self.assert_(not p.read_ready())
     p.feed('hello.')
     self.assert_(p.read_ready())
     data = p.read(6)
     self.assertEquals('hello.', data)
     
     p.feed('plus/minus')
     self.assertEquals('plu', p.read(3))
     self.assertEquals('s/m', p.read(3))
     self.assertEquals('inus', p.read(4))
     
     p.close()
     self.assert_(not p.read_ready())
     self.assertEquals('', p.read(1))

class Channel (object):
    """
    A secure tunnel across an SSH L{Transport}.  A Channel is meant to behave
    like a socket, and has an API that should be indistinguishable from the
    python socket API.

    Because SSH2 has a windowing kind of flow control, if you stop reading data
    from a Channel and its buffer fills up, the server will be unable to send
    you any more data until you read some of it.  (This won't affect other
    channels on the same transport -- all channels on a single transport are
    flow-controlled independently.)  Similarly, if the server isn't reading
    data you send, calls to L{send} may block, unless you set a timeout.  This
    is exactly like a normal network socket, so it shouldn't be too surprising.
    """

    def __init__(self, chanid):
        """
        Create a new channel.  The channel is not associated with any
        particular session or L{Transport} until the Transport attaches it.
        Normally you would only call this method from the constructor of a
        subclass of L{Channel}.

        @param chanid: the ID of this channel, as passed by an existing
            L{Transport}.
        @type chanid: int
        """
        self.chanid = chanid
        self.remote_chanid = 0
        self.transport = None
        self.active = False
        self.eof_received = 0
        self.eof_sent = 0
        self.in_buffer = BufferedPipe()
        self.in_stderr_buffer = BufferedPipe()
        self.timeout = None
        self.closed = False
        self.ultra_debug = False
        self.lock = threading.Lock()
        self.out_buffer_cv = threading.Condition(self.lock)
        self.in_window_size = 0
        self.out_window_size = 0
        self.in_max_packet_size = 0
        self.out_max_packet_size = 0
        self.in_window_threshold = 0
        self.in_window_sofar = 0
        self.status_event = threading.Event()
        self._name = str(chanid)
        self.logger = util.get_logger('paramiko.transport')
        self._pipe = None
        self.event = threading.Event()
        self.combine_stderr = False
        self.exit_status = -1
        self.origin_addr = None
    
    def __del__(self):
        try:
            self.close()
        except:
            pass
        
    def __repr__(self):
        """
        Return a string representation of this object, for debugging.

        @rtype: str
        """
        out = '<paramiko.Channel %d' % self.chanid
        if self.closed:
            out += ' (closed)'
        elif self.active:
            if self.eof_received:
                out += ' (EOF received)'
            if self.eof_sent:
                out += ' (EOF sent)'
            out += ' (open) window=%d' % (self.out_window_size)
            if len(self.in_buffer) > 0:
                out += ' in-buffer=%d' % (len(self.in_buffer),)
        out += ' -> ' + repr(self.transport)
        out += '>'
        return out

    def get_pty(self, term='vt100', width=80, height=24):
        """
        Request a pseudo-terminal from the server.  This is usually used right
        after creating a client channel, to ask the server to provide some
        basic terminal semantics for a shell invoked with L{invoke_shell}.
        It isn't necessary (or desirable) to call this method if you're going
        to exectue a single command with L{exec_command}.

        @param term: the terminal type to emulate (for example, C{'vt100'})
        @type term: str
        @param width: width (in characters) of the terminal screen
        @type width: int
        @param height: height (in characters) of the terminal screen
        @type height: int
        
        @raise SSHException: if the request was rejected or the channel was
            closed
        """
        if self.closed or self.eof_received or self.eof_sent or not self.active:
#.........这里部分代码省略.........

class Channel (object):
    """
    A secure tunnel across an SSH `.Transport`.  A Channel is meant to behave
    like a socket, and has an API that should be indistinguishable from the
    Python socket API.

    Because SSH2 has a windowing kind of flow control, if you stop reading data
    from a Channel and its buffer fills up, the server will be unable to send
    you any more data until you read some of it.  (This won't affect other
    channels on the same transport -- all channels on a single transport are
    flow-controlled independently.)  Similarly, if the server isn't reading
    data you send, calls to `send` may block, unless you set a timeout.  This
    is exactly like a normal network socket, so it shouldn't be too surprising.
    """

    def __init__(self, chanid):
        """
        Create a new channel.  The channel is not associated with any
        particular session or `.Transport` until the Transport attaches it.
        Normally you would only call this method from the constructor of a
        subclass of `.Channel`.

        :param int chanid:
            the ID of this channel, as passed by an existing `.Transport`.
        """
        self.chanid = chanid
        self.remote_chanid = 0
        self.transport = None
        self.active = False
        self.eof_received = 0
        self.eof_sent = 0
        self.in_buffer = BufferedPipe()
        self.in_stderr_buffer = BufferedPipe()
        self.timeout = None
        self.closed = False
        self.ultra_debug = False
        self.lock = threading.Lock()
        self.out_buffer_cv = threading.Condition(self.lock)
        self.in_window_size = 0
        self.out_window_size = 0
        self.in_max_packet_size = 0
        self.out_max_packet_size = 0
        self.in_window_threshold = 0
        self.in_window_sofar = 0
        self.status_event = threading.Event()
        self._name = str(chanid)
        self.logger = util.get_logger('paramiko.transport')
        self._pipe = None
        self.event = threading.Event()
        self.event_ready = False
        self.combine_stderr = False
        self.exit_status = -1
        self.origin_addr = None
    
    def __del__(self):
        try:
            self.close()
        except:
            pass
        
    def __repr__(self):
        """
        Return a string representation of this object, for debugging.
        """
        out = '<paramiko.Channel %d' % self.chanid
        if self.closed:
            out += ' (closed)'
        elif self.active:
            if self.eof_received:
                out += ' (EOF received)'
            if self.eof_sent:
                out += ' (EOF sent)'
            out += ' (open) window=%d' % (self.out_window_size)
            if len(self.in_buffer) > 0:
                out += ' in-buffer=%d' % (len(self.in_buffer),)
        out += ' -> ' + repr(self.transport)
        out += '>'
        return out

    def get_pty(self, term='vt100', width=80, height=24, width_pixels=0,
                height_pixels=0):
        """
        Request a pseudo-terminal from the server.  This is usually used right
        after creating a client channel, to ask the server to provide some
        basic terminal semantics for a shell invoked with `invoke_shell`.
        It isn't necessary (or desirable) to call this method if you're going
        to exectue a single command with `exec_command`.

        :param str term: the terminal type to emulate (for example, ``'vt100'``)
        :param int width: width (in characters) of the terminal screen
        :param int height: height (in characters) of the terminal screen
        :param int width_pixels: width (in pixels) of the terminal screen
        :param int height_pixels: height (in pixels) of the terminal screen
        
        :raises SSHException:
            if the request was rejected or the channel was closed
        """
        if self.closed or self.eof_received or self.eof_sent or not self.active:
            raise SSHException('Channel is not open')
        m = Message()
#.........这里部分代码省略.........

    def test_1_buffered_pipe(self):
        p = BufferedPipe()
        self.assertTrue(not p.read_ready())
        p.feed("hello.")
        self.assertTrue(p.read_ready())
        data = p.read(6)
        self.assertEqual(b"hello.", data)

        p.feed("plus/minus")
        self.assertEqual(b"plu", p.read(3))
        self.assertEqual(b"s/m", p.read(3))
        self.assertEqual(b"inus", p.read(4))

        p.close()
        self.assertTrue(not p.read_ready())
        self.assertEqual(b"", p.read(1))

class Channel(object):
    """
    A secure tunnel across an SSH L{Transport}.  A Channel is meant to behave
    like a socket, and has an API that should be indistinguishable from the
    python socket API.

    Because SSH2 has a windowing kind of flow control, if you stop reading data
    from a Channel and its buffer fills up, the server will be unable to send
    you any more data until you read some of it.  (This won't affect other
    channels on the same transport -- all channels on a single transport are
    flow-controlled independently.)  Similarly, if the server isn't reading
    data you send, calls to L{send} may block, unless you set a timeout.  This
    is exactly like a normal network socket, so it shouldn't be too surprising.
    """

    def __init__(self, chanid):
        """
        Create a new channel.  The channel is not associated with any
        particular session or L{Transport} until the Transport attaches it.
        Normally you would only call this method from the constructor of a
        subclass of L{Channel}.

        @param chanid: the ID of this channel, as passed by an existing
            L{Transport}.
        @type chanid: int
        """
        self.chanid = chanid
        self.remote_chanid = 0
        self.transport = None
        self.active = False
        self.eof_received = 0
        self.eof_sent = 0
        self.in_buffer = BufferedPipe()
        self.in_stderr_buffer = BufferedPipe()
        self.timeout = None
        self.closed = False
        self.ultra_debug = False
        self.lock = threading.Lock()
        self.out_buffer_cv = threading.Condition(self.lock)
        self.in_window_size = 0
        self.out_window_size = 0
        self.in_max_packet_size = 0
        self.out_max_packet_size = 0
        self.in_window_threshold = 0
        self.in_window_sofar = 0
        self.status_event = threading.Event()
        self._name = str(chanid)
        self.logger = util.get_logger("paramiko.transport")
        self._pipe = None
        self.event = threading.Event()
        self.event_ready = False
        self.combine_stderr = False
        self.exit_status = -1
        self.origin_addr = None

    def __del__(self):
        try:
            self.close()
        except:
            pass

    def __repr__(self):
        """
        Return a string representation of this object, for debugging.

        @rtype: str
        """
        out = "<paramiko.Channel %d" % self.chanid
        if self.closed:
            out += " (closed)"
        elif self.active:
            if self.eof_received:
                out += " (EOF received)"
            if self.eof_sent:
                out += " (EOF sent)"
            out += " (open) window=%d" % (self.out_window_size)
            if len(self.in_buffer) > 0:
                out += " in-buffer=%d" % (len(self.in_buffer),)
        out += " -> " + repr(self.transport)
        out += ">"
        return out

    def get_pty(self, term="vt100", width=80, height=24):
        """
        Request a pseudo-terminal from the server.  This is usually used right
        after creating a client channel, to ask the server to provide some
        basic terminal semantics for a shell invoked with L{invoke_shell}.
        It isn't necessary (or desirable) to call this method if you're going
        to exectue a single command with L{exec_command}.

        @param term: the terminal type to emulate (for example, C{'vt100'})
        @type term: str
        @param width: width (in characters) of the terminal screen
        @type width: int
        @param height: height (in characters) of the terminal screen
        @type height: int

        @raise SSHException: if the request was rejected or the channel was
            closed
        """
#.........这里部分代码省略.........