def application(e, sr):
sr('200 OK', [('Content-Type','text/plain')])
# call suspend 10 times and yield some value
for i in range(0,10):
print i
uwsgi.suspend()
yield str(i)
# connect to a memcached server
fd = uwsgi.async_connect('127.0.0.1:11211')
try:
# start waiting for socket availability (4 seconds max)
uwsgi.wait_fd_write(fd, 4)
# suspend execution 'til event
uwsgi.suspend()
uwsgi.send(fd, "get /foobar\r\n")
# now wait for memcached response
uwsgi.wait_fd_read(fd, 4)
uwsgi.suspend()
# read the response
data = uwsgi.recv(fd, 4096)
# return to the client
yield data
finally:
uwsgi.close(fd)
print "sleeping for 3 seconds..."
uwsgi.async_sleep(3)
uwsgi.suspend()
yield "done"
def application(e, sr):
sr('200 OK', [('Content-Type', 'text/plain')])
# call suspend 10 times and yield some value
for i in range(0, 10):
print(i)
uwsgi.suspend()
yield str(i)
# connect to a memcached server
fd = uwsgi.async_connect('127.0.0.1:11211')
try:
# start waiting for socket availability (4 seconds max)
uwsgi.wait_fd_write(fd, 4)
# suspend execution 'til event
uwsgi.suspend()
uwsgi.send(fd, "get /foobar\r\n")
# now wait for memcached response
uwsgi.wait_fd_read(fd, 4)
uwsgi.suspend()
# read the response
data = uwsgi.recv(fd, 4096)
# return to the client
yield data
finally:
uwsgi.close(fd)
print("sleeping for 3 seconds...")
uwsgi.async_sleep(3)
uwsgi.suspend()
yield "done"
def async_wait(conn):
# conn can be a connection or a cursor
if not hasattr(conn, 'poll'):
conn = conn.connection
# interesting part: suspend until ready
while True:
state = conn.poll()
if state == psycopg2.extensions.POLL_OK:
break
elif state == psycopg2.extensions.POLL_READ:
uwsgi.wait_fd_read(conn.fileno())
uwsgi.suspend()
elif state == psycopg2.extensions.POLL_WRITE:
uwsgi.wait_fd_write(conn.fileno())
uwsgi.suspend()
else:
raise Exception("Unexpected result from poll: %r", state)
def async_wait(conn):
# conn can be a connection or a cursor
if not hasattr(conn, 'poll'):
conn = conn.connection
# interesting part: suspend until ready
while True:
state = conn.poll()
if state == psycopg2.extensions.POLL_OK:
break
elif state == psycopg2.extensions.POLL_READ:
uwsgi.wait_fd_read(conn.fileno())
uwsgi.suspend()
elif state == psycopg2.extensions.POLL_WRITE:
uwsgi.wait_fd_write(conn.fileno())
uwsgi.suspend()
else:
raise Exception("Unexpected result from poll: %r", state)
def application(e, sr):
sr('200 OK', [('Content-Type', 'text/plain')])
# suspend 10 times and yield a value
for i in range(1, 10):
print i
uwsgi.suspend()
yield str(i)
# connect to a memcached server
fd = uwsgi.async_connect('127.0.0.1:11211')
try:
command = "get /foobar\r\n"
remains = len(command)
while remains > 0:
# start waiting for socket availability (4 seconds max)
uwsgi.wait_fd_write(fd, 4)
# suspend execution 'til event
uwsgi.suspend()
pos = len(command) - remains
written = uwsgi.send(fd, command[pos:])
remains -= written
# now wait for memcached response
uwsgi.wait_fd_read(fd, 4)
uwsgi.suspend()
# read a chunk of data
data = uwsgi.recv(fd, 4096)
# .. and yield it
yield data
finally:
# always ensure sockets are closed
uwsgi.close(fd)
print "sleeping for 3 seconds..."
uwsgi.async_sleep(3)
uwsgi.suspend()
yield "done"
def application(env, start_response):
c = uwsgi.async_connect('74.125.232.115:80')
# wait for connection
yield uwsgi.wait_fd_write(c, 2)
if env['x-wsgiorg.fdevent.timeout']:
uwsgi.close(c)
raise StopIteration
if uwsgi.is_connected(c):
for r in send_request(env, c):
yield r
else:
start_response('500 Internal Server Error', [('Content-Type', 'text/html')])
yield "Internal Server Error"
uwsgi.close(c)
def application(env, start_response):
c = uwsgi.async_connect('74.125.232.115:80')
# wait for connection
yield uwsgi.wait_fd_write(c, 2)
if env['x-wsgiorg.fdevent.timeout']:
uwsgi.close(c)
raise StopIteration
if uwsgi.is_connected(c):
for r in send_request(env, c):
yield r
else:
start_response('500 Internal Server Error',
[('Content-Type', 'text/html')])
yield "Internal Server Error"
uwsgi.close(c)
def application(env, start_response):
# open the socket
fd = uwsgi.async_connect("192.168.173.100:3032")
# wait for connection ready (3s timeout)
yield uwsgi.wait_fd_write(fd, 3)
# has timed out ?
if env['x-wsgiorg.fdevent.timeout']:
print "connection timed out !!!"
uwsgi.close(fd)
raise StopIteration
# connection refused ?
if not uwsgi.is_connected(fd):
print "unable to connect"
uwsgi.close(fd)
raise StopIteration
# send request
# env can contains python objects, but send_message will discard them.
# In this way we will automagically have a congruent and valid uwsgi packet
uwsgi.async_send_message(fd, 0, 0, env)
# send the http body
# ready body in async mode and resend to fd
# uwsgi.recv will use always an internal buffer of 4096, but can be limited in the number of bytes to read
# does this request has a body ?
cl = uwsgi.cl()
if cl > 0:
# get the input fd
input = env['wsgi.input'].fileno()
# read (in async mode) upto 'cl' data and send to uwsgi peer
while cl > 0:
bufsize = min(cl, 4096)
yield uwsgi.wait_fd_read(input, 30)
if env['x-wsgiorg.fdevent.timeout']:
print "connection timed out !!!"
uwsgi.close(fd)
raise StopIteration
body = uwsgi.recv(input, bufsize)
if body:
uwsgi.send(fd, body)
cl = cl - len(body)
else:
break
# wait for response (30s timeout)
yield uwsgi.wait_fd_read(fd, 30)
# has timed out ?
if env['x-wsgiorg.fdevent.timeout']:
print "connection timed out !!!"
uwsgi.close(fd)
raise StopIteration
data = uwsgi.recv(fd)
# recv the data, if it returns None the callable will end
while data:
yield data
# wait for response
yield uwsgi.wait_fd_read(fd, 30)
if env['x-wsgiorg.fdevent.timeout']:
print "connection timed out !!!"
uwsgi.close(fd)
raise StopIteration
data = uwsgi.recv(fd)
uwsgi.close(fd)
raise Exception("unable to connect to %s" % addr)
return fd
uwsgi.async_connect = uwsgi_pypy_async_connect
uwsgi.connection_fd = lambda: uwsgi_pypy_current_wsgi_req().fd
"""
uwsgi.wait_fd_read(fd, timeout=0)
"""
def uwsgi_pypy_wait_fd_read(fd, timeout=0):
wsgi_req = uwsgi_pypy_current_wsgi_req();
if lib.async_add_fd_read(wsgi_req, fd, timeout) < 0:
raise Exception("unable to add fd %d to the event queue" % fd)
uwsgi.wait_fd_read = uwsgi_pypy_wait_fd_read
"""
uwsgi.wait_fd_write(fd, timeout=0)
"""
def uwsgi_pypy_wait_fd_write(fd, timeout=0):
wsgi_req = uwsgi_pypy_current_wsgi_req();
if lib.async_add_fd_write(wsgi_req, fd, timeout) < 0:
raise Exception("unable to add fd %d to the event queue" % fd)
uwsgi.wait_fd_write = uwsgi_pypy_wait_fd_write
"""
uwsgi.ready_fd()
"""
def uwsgi_pypy_ready_fd():
wsgi_req = uwsgi_pypy_current_wsgi_req();
return lib.uwsgi_ready_fd(wsgi_req)
uwsgi.ready_fd = uwsgi_pypy_ready_fd
raise Exception("unable to connect to %s" % addr)
return fd
uwsgi.async_connect = uwsgi_pypy_async_connect
uwsgi.connection_fd = lambda: uwsgi_pypy_current_wsgi_req().fd
"""
uwsgi.wait_fd_read(fd, timeout=0)
"""
def uwsgi_pypy_wait_fd_read(fd, timeout=0):
wsgi_req = uwsgi_pypy_current_wsgi_req();
if lib.async_add_fd_read(wsgi_req, fd, timeout) < 0:
raise Exception("unable to add fd %d to the event queue" % fd)
uwsgi.wait_fd_read = uwsgi_pypy_wait_fd_read
"""
uwsgi.wait_fd_write(fd, timeout=0)
"""
def uwsgi_pypy_wait_fd_write(fd, timeout=0):
wsgi_req = uwsgi_pypy_current_wsgi_req();
if lib.async_add_fd_write(wsgi_req, fd, timeout) < 0:
raise Exception("unable to add fd %d to the event queue" % fd)
uwsgi.wait_fd_write = uwsgi_pypy_wait_fd_write
"""
uwsgi.ready_fd()
"""
def uwsgi_pypy_ready_fd():
wsgi_req = uwsgi_pypy_current_wsgi_req();
return lib.uwsgi_ready_fd(wsgi_req)
uwsgi.ready_fd = uwsgi_pypy_ready_fd
