Python多處理/帶有Cherrypy的隊列
[英]Python multiprocessing / Queue with cherrypy
問題描述
我想用cherrypy做一個python代碼。 目的是從UI調用腳本，而腳本在控制台上生成日志時，將其打印在UI（Iframe / div）上。 我正在使用CherryPy-3.2.4和Python 2.7。 以下是我編寫的拒絕工作的示例代碼。
TestProcess.py
from multiprocessing import Process, Queue
import subprocess
import os, os.path
from string import Template
import cherrypy
from multiprocessing import Process, Queue
import HTML
import TestScript
class TestProcess(object):
PID=0
jquery_url = 'C:\CherryPy\TestScripts\jquery\jquery-1.11.1.js'
q=Queue()
@cherrypy.expose
def index(self):
html = """\
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> Test Doc </TITLE>
<script type="text/javascript" src="/static/jq/jquery-1.11.1.js"></script>
</HEAD>
<BODY>
<BR/>
<h3>Test utility</h3>
<form id="ping_form" target="console_iframe" method="post" action="/f">
<button id="ping" type="submit">Upgrade Installed Releases</button>
</form>
<BR/>
<iframe name="console_iframe" frameborder="1" width="1200"/>
</BODY>
</HTML>
"""
t = Template(html)
page = t.substitute(jquery_url=self.jquery_url)
return page
def f1():
print "*********** TEST **********************"
q.put([42, None, 'hello'])
@cherrypy.expose
def f(self, **kw):
q=Queue()
ts = TestScript.TestScript()
p = Process(target=ts.testCallFunction, args=(q,))
p.start()
#print q.get() # prints "[42, None, 'hello']"
p.join()
print "Test F"
def run_command():
# The yeilds here are the key to keeping things streaming
yield '<style>body {font-family: monospace;}</style>'
while(p.is_alive()):
while(not q.empty()):
yield q.get_nowait()
while(not q.empty()):
yield q.get_nowait()
return run_command()
if __name__ == '__main__':
conf = {
'/': {
'tools.sessions.on': True,
'tools.staticdir.root': os.path.abspath(os.getcwd())
},
'/static': {
'tools.staticdir.on': True,
'tools.staticdir.dir': './public'
}
}
q = Queue()
cherrypy.server.socket_host = '10.49.69.103'
cherrypy.config.update({
'log.screen':True,
'tools.sessions.on': True,
'checker.on':False
})
cherrypy.tree.mount(TestProcess(), config=None)
cherrypy.engine.start()
cherrypy.engine.block()
#cherrypy.quickstart(TestProcess(), '/', conf)
類TestScript
class TestScript(object):
q=Queue()
def write_queue(self,data):
print "*********** TEST **********************"
scroll_to_bottom = '<script type="text/javascript">window.scrollBy(0,50);</script>'
if data == '\n':
self.q.put("\n<br />%s" % scroll_to_bottom) # include the iframe scroll fix
else:
self.q.put(data)
def testCallFunction(self, q):
#proc = subprocess.Popen(['python','CreateLog.py'],stdout=subprocess.PIPE)
cmd = subprocess.Popen(['python','CreateLog.py'], shell=True, stdout=subprocess.PIPE)
while True:
data = cmd.stdout.read(1) # Alternatively proc.stdout.read(1024)
if len(data) == 0:
break
self.write_queue(data) # sys.stdout.buffer.write(data) on Python 3.x
#print "*********** TEST **********************"
腳本CreateLog.py
#filters output
import time
i = 0
while (i<=10):
print hex(i)*512
i += 1
time.sleep(0.5)
運行時出現的錯誤
[24/Jul/2014:16:59:10] ENGINE Bus STARTING
[24/Jul/2014:16:59:10] ENGINE Started monitor thread 'Autoreloader'.
[24/Jul/2014:16:59:10] ENGINE Started monitor thread '_TimeoutMonitor'.
[24/Jul/2014:16:59:15] ENGINE Error in 'start' listener <bound method Server.sta
rt of <cherrypy._cpserver.Server object at 0x01583390>>
Traceback (most recent call last):
File "c:\Python27\lib\site-packages\cherrypy\process\wspbus.py", line 197, in
publish
output.append(listener(*args, **kwargs))
File "c:\Python27\lib\site-packages\cherrypy\_cpserver.py", line 151, in start
ServerAdapter.start(self)
File "c:\Python27\lib\site-packages\cherrypy\process\servers.py", line 168, in
start
wait_for_free_port(*self.bind_addr)
File "c:\Python27\lib\site-packages\cherrypy\process\servers.py", line 412, in
wait_for_free_port
raise IOError("Port %r not free on %r" % (port, host))
IOError: Port 8080 not free on '10.49.69.103'
[24/Jul/2014:16:59:15] ENGINE Shutting down due to error in start listener:
Traceback (most recent call last):
File "c:\Python27\lib\site-packages\cherrypy\process\wspbus.py", line 235, in
start
self.publish('start')
File "c:\Python27\lib\site-packages\cherrypy\process\wspbus.py", line 215, in
publish
raise exc
ChannelFailures: IOError("Port 8080 not free on '10.49.69.103'",)
我究竟做錯了什么 ？
2 個解決方案
解決方案1
1 2014-07-28 19:40:11
解決方案2
0 2014-07-25 01:19:28
端口8080不是免費的，因此HTTP服務器無法監聽它。 嘗試使用netstat -anpt查看正在使用該端口的端口，或者嘗試使用“ server.socket_port：8081”或其他可用的端口。
Cherrypy：多處理
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