A 创建了一个非常简单的扭曲应用程序，它启动 TCP 协议并回显您在 STDIN 中键入的内容。
我现在正在尝试创建一个twistd能够以这种方式运行我的应用程序的插件：echo start或者twistd -n echo
当运行twistd -n echo一切按预期工作时，使用echo start命令时出现错误：/home/vagrant/.env/bld/bin/echo: Unknown command: echo
这是我的代码：
回声/插件.py
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from twisted.application import internet
from twisted.internet import endpoints
from twisted.internet.protocol import Factory
from twisted.python import usage
from echo.protocol import EchoProtocol
class Options(usage.Options):
optParameters = [['port', 'p', 1234, 'Service port.']]
def makeService(options):
from twisted.internet import reactor
f = Factory()
f.protocol = EchoProtocol
ep = endpoints.TCP4ServerEndpoint(reactor, int(options['port']))
return internet.StreamServerEndpointService(ep, f)
回声/协议.py
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from twisted.internet.protocol import Protocol
class EchoProtocol(Protocol):
def dataReceived(self, data):
self.transport.write('You entered: {data}'.format(data=data))
回声/点击.py
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import sys
from twisted.python import usage
from twisted.scripts import twistd
class Start(twistd.ServerOptions):
def parseOptions(self, args):
sys.argv[1:] = self.getArguments(args)
print('Starting echo service...')
twistd.run()
def getArguments(self, args):
args.extend(['--pidfile', self.parent.pid])
args.extend(['_bld_echo'])
return args
class Options(usage.Options):
pid = '/tmp/echo.pid'
subCommands = [['start', None, Start, 'Launch echo service.']]
def main(argv=None):
o = Options()
try:
o.parseOptions(argv)
except usage.UsageError, e:
raise SystemExit(str(e))
扭曲/插件/echo_plugin.py
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from twisted.application.service import ServiceMaker
Finger = ServiceMaker(
'EchoServiceMaker', # name
'echo.plugins', # module
'Description blah-blah.', # description
'_plgn_echo') # tapname
安装程序.py
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from setuptools import find_packages
from setuptools import setup
setup(
name='Echo',
version='0.0.1',
packages=find_packages(),
entry_points={
'console_scripts': [
'_ep_echo=echo.tap:main',
],
},
install_requires=[
'Twisted==16.0.0',
],
include_package_data=True,
zip_safe=False,)
这是我的 virtualenv 设置：
(bld)vagrant@/code/echo $ pip list
Echo (0.0.1)
pip (1.4.1)
setuptools (20.3.1)
Twisted (16.0.0)
wsgiref (0.1.2)
zope.interface (4.1.3)
我在命令前加上_ep_和_bld_因为我不确定在通过 twistd 调用程序或直接调用 entry_point 时调用了哪个命令，但我尝试了任何可能的组合但没有成功......
当我跑步时，_ep_echo start我得到：
[twistd -help output...]
twistd reads a twisted.application.service.Application out of a file and runs
it.
Commands:
conch A Conch SSH service.
dns A domain name server.
ftp An FTP server.
inetd An inetd(8) replacement.
mail An email service
manhole An interactive remote debugger service accessible via
telnet and ssh and providing syntax coloring and basic line
editing functionality.
manhole-old An interactive remote debugger service.
news A news server.
portforward A simple port-forwarder.
procmon A process watchdog / supervisor
socks A SOCKSv4 proxy service.
telnet A simple, telnet-based remote debugging service.
web A general-purpose web server which can serve from a
filesystem or application resource.
words A modern words server
xmpp-router An XMPP Router server
/home/vagrant/.env/bld/bin/_ep_echo: Unknown command: _bld_echo
如果我替换_bld_echo为_ep_echo.
查看输出时有一件事很奇怪：twistd 没有echo注册子命令。
如果我跑步，twistd --help我会得到：
twistd reads a twisted.application.service.Application out of a file and runs
it.
Commands:
_plgn_echo Description blah-blah.
conch A Conch SSH service.
dns A domain name server.
ftp An FTP server.
inetd An inetd(8) replacement.
mail An email service
manhole An interactive remote debugger service accessible via
telnet and ssh and providing syntax coloring and basic line
editing functionality.
manhole-old An interactive remote debugger service.
news A news server.
portforward A simple port-forwarder.
procmon A process watchdog / supervisor
socks A SOCKSv4 proxy service.
telnet A simple, telnet-based remote debugging service.
web A general-purpose web server which can serve from a
filesystem or application resource.
words A modern words server
xmpp-router An XMPP Router server
在那里你可以看到echo注册的命令。
这让我发疯，关于这里有什么问题的任何想法？
请注意，我运行python setup.py install而不是python setup.py develop，后一个命令有效，但我不想在生产中运行它
编辑
好的，在搜索了为什么axiomatic start有效而不是我的原因后echo start，我通过从安装中删除所有不需要的代码以及我发现的找到了原因（我不声称这是解决方案，我很想听听@glyph 对此的回答）
Axiom和Echo之间的主要区别在于setup.py：
packages=find_packages() + ['twisted.plugins']
我没有+ ['twisted.plugins']添加到packages line，现在它可以工作了，但仍然发生此错误：
Unexpected error while writing cache file
Traceback (most recent call last):
File "/home/vagrant/.env/bld/lib/python2.7/site-packages/Twisted-16.0.0-py2.7-linux-x86_64.egg/twisted/application/app.py", line 579, in parseOptions
usage.Options.parseOptions(self, options)
File "/home/vagrant/.env/bld/lib/python2.7/site-packages/Twisted-16.0.0-py2.7-linux-x86_64.egg/twisted/python/usage.py", line 262, in parseOptions
for (cmd, short, parser, doc) in self.subCommands:
File "/home/vagrant/.env/bld/lib/python2.7/site-packages/Twisted-16.0.0-py2.7-linux-x86_64.egg/twisted/application/app.py", line 596, in subCommands
for plug in sorted(plugins, key=attrgetter('tapname')):
File "/home/vagrant/.env/bld/lib/python2.7/site-packages/Twisted-16.0.0-py2.7-linux-x86_64.egg/twisted/plugin.py", line 213, in getPlugins
allDropins = getCache(package)
--- <exception caught here> ---
File "/home/vagrant/.env/bld/lib/python2.7/site-packages/Twisted-16.0.0-py2.7-linux-x86_64.egg/twisted/plugin.py", line 185, in getCache
dropinPath.setContent(pickle.dumps(dropinDotCache))
exceptions.AttributeError: 'ZipPath' object has no attribute 'setContent'
该插件有效，但我真的很想知道为什么我原来的安装方式不起作用...