I attached an interactive version of the MakoInstaller with an example
of how I use it.
I didn't see an interactive installer in Paste Script itself and the
interactivity is clearly decoupled from the Mako part. Is this the
kind of stuff you'd want in Paste? I can submit a diff against SVN
trunk if you are interested.
--
Yannick Gingras
from paste.script.appinstall import Installer
from mako.template import Template
from paste.script import copydir
from paste.script.command import NoDefault
from pprint import pprint
class MakoInstaller(Installer):
""" Exactly like ``paste.script.command.Installer`` except for
configuration file generation.
The ``.ini`` is rendered with Mako and the user is prompted for
required values. The class variables ``required_vals` and
``required_bool_vals`` are lists of value names or ``(val_name,
default)`` tuples. If ``default`` is callable, it will be called
with the ``vars`` dict to the the default; otherwise, its value is used
literally."""
# TODO: better prompts, possibly with terse prompts and added
# supper in .ask() for 'h' to generate long help.
use_cheetah = False
meta_name = "paste_deploy_config.ini_tmpl"
#required_vals = []
#required_bool_vals = []
def config_content(self, command, vars):
"""
Called by ``self.write_config``, this returns the text content
for the config file, given the provided variables.
This implementation reads
``Package.egg-info/paste_deploy_config.ini_tmpl`` and fills it
with the variables using Mako.
"""
# TODO: There is a lot of cleenup that can be done when the
# next paste script is out. 1: we can subclass
# .template_renderer() 2: .ask() will support NoDefault
# instead of 'none'
pprint (self.required_vals)
vals_stuff = [(val, command.challenge, NoDefault)
for val in self.required_vals]
vals_stuff += [(val, command.ask, 'none')
for val in self.required_bool_vals]
for val, prompt_f, no_default in vals_stuff:
default = no_default
if isinstance(val, tuple) or isinstance(val, list):
val, default = val
if callable(default):
default = default(vars)
if val not in vars:
if command.interactive:
vars[val] = prompt_f(val, default=default)
elif default is not no_default:
vars[val] = default
else:
msg = "Can't generate configuration: '%s' missing" % val
raise Exception(msg)
if not self.dist.has_metadata(self.meta_name):
if command.verbose:
print 'No %s found' % meta_name
return self.simple_config(vars)
tmpl = Template(self.dist.get_metadata(self.meta_name))
return copydir.careful_sub(
tmpl.render_unicode(**vars), vars, self.meta_name)
from uuid import uuid1
from hashlib import sha1
from datetime import date
def shahex(vars):
return sha1(str(uuid1())).hexdigest()
def getuuid(vars):
return str(uuid1())
class GazestInstaller(MakoInstaller):
required_vals = [("site_name", "A Gazest Site"),
"domain_name",
("site_base",
lambda v:"http://gazest.%s"; % v["domain_name"]),
("site_uuid", getuuid),
("site_changes_feed_uuid", getuuid),
("webmaster_email",
lambda v:"[EMAIL PROTECTED]" % v["domain_name"]),
("error_email_from",
lambda v:"[EMAIL PROTECTED]" % v["domain_name"]),
("system_email_from",
lambda v:"[EMAIL PROTECTED]" % v["domain_name"]),
("smtp_server", "localhost"),
("copyright_years", date.today().year),
"copyright_owner",
("copyright_owner_email", lambda v:v["webmaster_email"]),
("beaker_session_key", "gazest"),
("beaker_session_secret", shahex),
("authkit_cookie_secret", shahex),
("sqlalchemy_dburi", "sqlite:///%(here)s/data.db"),
]
required_bool_vals = [("use_error_mails", False),
("staging", True),
]
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