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Project Description

A simple connection pool for gevent.

Basic Usage

The following is an example to create a connection pool that communicates an echo server running on localhost 2000.

>>> from gsocketpool import Pool
>>> from gsocketpool import TcpConnection
>>>
>>> options = dict(host='localhost', port=2000)
>>> pool = Pool(TcpConnection, options)
>>>
>>> with pool.connection() as conn:
...     conn.send('hello')
...     print conn.recv()
hello

Implementing Protocol

Arbitrary protocols can be easily implemented by extending Connection class. You have to override at least three functions such as open(), close() and is_connected().

TcpConnection used in the above example is also implemented as a subclass of Connection.

class TcpConnection(Connection):

    def __init__(self, host, port, lifetime=600, timeout=None):
        self._sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self._host = host
        self._port = port
        self._lifetime = lifetime
        self._timeout = timeout
        self._connected = False
        self._created = None

    def get(self):
        return self._sock

    def open(self):
        self._sock.connect((self._host, self._port))
        if self._timeout:
            self._sock.settimeout(self._timeout)

        self._connected = True
        self._created = time.time()

    def close(self):
        if self._connected:
            self._sock.close()
            self._connected = False

    def is_connected(self):
        return self._connected

    def is_expired(self):
        if time.time() - self._created > self._lifetime:
            return True
        else:
            return False

    def send(self, data):
        assert self._connected

        self._sock.send(data)

    def recv(self, size=1024):
        assert self._connected

        return self._sock.recv(size)

Documentation

Documentation is available at http://gsocketpool.readthedocs.org/.

Release History

Release History

0.1.5

This version

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0.1.4

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0.1.3

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0.1.2

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0.1.1

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0.1

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0.0.1

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Download Files

Download Files

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
gsocketpool-0.1.5.tar.gz (5.5 kB) Copy SHA256 Checksum SHA256 Source Oct 12, 2015

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