377 lines
14 KiB
Python
377 lines
14 KiB
Python
# -*- coding: utf-8; -*-
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################################################################################
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#
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# Rattail -- Retail Software Framework
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# Copyright © 2010-2018 Lance Edgar
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#
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# This file is part of Rattail.
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#
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# Rattail is free software: you can redistribute it and/or modify it under the
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# terms of the GNU General Public License as published by the Free Software
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# Foundation, either version 3 of the License, or (at your option) any later
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# version.
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#
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# Rattail is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# Rattail. If not, see <http://www.gnu.org/licenses/>.
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#
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################################################################################
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"""
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Views for app upgrades
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"""
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from __future__ import unicode_literals, absolute_import
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import os
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import re
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import logging
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import six
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from sqlalchemy import orm
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# TODO: pip has declared these to be "not public API" so we should find another way..
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try:
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# this works for now, with pip 10.0.1
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from pip._internal.download import PipSession
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from pip._internal.req import parse_requirements
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except ImportError:
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# this should work with pip < 10.0
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from pip.download import PipSession
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from pip.req import parse_requirements
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from rattail.db import model, Session as RattailSession
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from rattail.time import make_utc
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from rattail.threads import Thread
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from rattail.upgrades import get_upgrade_handler
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from deform import widget as dfwidget
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from webhelpers2.html import tags, HTML
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from tailbone.views import MasterView
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from tailbone.progress import SessionProgress, get_progress_session
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log = logging.getLogger(__name__)
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class UpgradeView(MasterView):
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"""
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Master view for all user events
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"""
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model_class = model.Upgrade
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downloadable = True
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cloneable = True
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executable = True
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execute_progress_template = '/upgrade.mako'
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execute_progress_initial_msg = "Upgrading"
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supports_prev_next = True
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labels = {
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'executed_by': "Executed by",
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'status_code': "Status",
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'stdout_file': "STDOUT",
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'stderr_file': "STDERR",
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}
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grid_columns = [
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'created',
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'description',
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# 'not_until',
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'enabled',
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'status_code',
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'executed',
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'executed_by',
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]
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form_fields = [
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'description',
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# 'not_until',
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# 'requirements',
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'notes',
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'created',
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'created_by',
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'enabled',
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'executed',
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'executed_by',
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'status_code',
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'stdout_file',
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'stderr_file',
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'exit_code',
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'package_diff',
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]
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def __init__(self, request):
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super(UpgradeView, self).__init__(request)
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self.handler = self.get_handler()
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def get_handler(self):
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"""
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Returns the ``UpgradeHandler`` instance for the view. The handler
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factory for this may be defined by config, e.g.:
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.. code-block:: ini
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[rattail.upgrades]
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handler = myapp.upgrades:CustomUpgradeHandler
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"""
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return get_upgrade_handler(self.rattail_config)
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def configure_grid(self, g):
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super(UpgradeView, self).configure_grid(g)
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g.set_joiner('executed_by', lambda q: q.join(model.User, model.User.uuid == model.Upgrade.executed_by_uuid).outerjoin(model.Person))
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g.set_sorter('executed_by', model.Person.display_name)
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g.set_enum('status_code', self.enum.UPGRADE_STATUS)
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g.set_type('created', 'datetime')
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g.set_type('executed', 'datetime')
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g.set_sort_defaults('created', 'desc')
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g.set_link('created')
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g.set_link('description')
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# g.set_link('not_until')
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g.set_link('executed')
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def grid_extra_class(self, upgrade, i):
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if upgrade.status_code == self.enum.UPGRADE_STATUS_FAILED:
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return 'warning'
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if upgrade.status_code == self.enum.UPGRADE_STATUS_EXECUTING:
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return 'notice'
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def template_kwargs_view(self, **kwargs):
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upgrade = kwargs['instance']
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upgrades = self.Session.query(model.Upgrade)\
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.filter(model.Upgrade.uuid != upgrade.uuid)
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kwargs['prev_instance'] = upgrades.filter(model.Upgrade.created <= upgrade.created)\
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.order_by(model.Upgrade.created.desc())\
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.first()
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kwargs['next_instance'] = upgrades.filter(model.Upgrade.created >= upgrade.created)\
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.order_by(model.Upgrade.created)\
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.first()
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return kwargs
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def configure_form(self, f):
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super(UpgradeView, self).configure_form(f)
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f.set_enum('status_code', self.enum.UPGRADE_STATUS)
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f.set_type('created', 'datetime')
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f.set_type('enabled', 'boolean')
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f.set_type('executed', 'datetime')
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# f.set_widget('not_until', dfwidget.DateInputWidget())
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f.set_widget('notes', dfwidget.TextAreaWidget(cols=80, rows=8))
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f.set_renderer('stdout_file', self.render_stdout_file)
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f.set_renderer('stderr_file', self.render_stdout_file)
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f.set_renderer('package_diff', self.render_package_diff)
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# f.set_readonly('created')
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# f.set_readonly('created_by')
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f.set_readonly('executed')
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f.set_readonly('executed_by')
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upgrade = f.model_instance
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if self.creating or self.editing:
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f.remove_field('created')
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f.remove_field('created_by')
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f.remove_field('stdout_file')
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f.remove_field('stderr_file')
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if self.creating:
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f.remove_field('status_code')
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else:
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f.set_readonly('status_code')
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if self.creating or not upgrade.executed:
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f.remove_field('executed')
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f.remove_field('executed_by')
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if self.editing and upgrade.executed:
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f.remove_field('enabled')
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elif f.model_instance.executed:
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f.remove_field('enabled')
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else:
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f.remove_field('executed')
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f.remove_field('executed_by')
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f.remove_field('stdout_file')
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f.remove_field('stderr_file')
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if not self.viewing or not upgrade.executed:
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f.remove_field('package_diff')
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f.remove_field('exit_code')
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def configure_clone_form(self, f):
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f.fields = ['description', 'notes', 'enabled']
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def clone_instance(self, original):
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cloned = self.model_class()
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cloned.created = make_utc()
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cloned.created_by = self.request.user
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cloned.description = original.description
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cloned.notes = original.notes
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cloned.status_code = self.enum.UPGRADE_STATUS_PENDING
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cloned.enabled = original.enabled
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self.Session.add(cloned)
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self.Session.flush()
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return cloned
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def render_stdout_file(self, upgrade, fieldname):
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if fieldname.startswith('stderr'):
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filename = 'stderr.log'
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else:
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filename = 'stdout.log'
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path = self.rattail_config.upgrade_filepath(upgrade.uuid, filename=filename)
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if path:
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url = '{}?filename={}'.format(self.get_action_url('download', upgrade), filename)
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return self.render_file_field(path, url, filename=filename)
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return filename
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def render_package_diff(self, upgrade, fieldname):
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try:
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before = self.parse_requirements(upgrade, 'before')
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after = self.parse_requirements(upgrade, 'after')
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diff = self.make_diff(before, after,
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columns=["package", "old version", "new version"],
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render_field=self.render_diff_field,
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render_value=self.render_diff_value,
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)
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showing = HTML.tag('div',
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"showing: "
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+ tags.link_to("all", '#', class_='all')
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+ " / "
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+ tags.link_to("diffs only", '#', class_='diffs'),
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class_='showing')
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return showing + diff.render_html()
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except:
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log.debug("failed to render package diff for upgrade: {}".format(upgrade), exc_info=True)
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return "(not available for this upgrade)"
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def changelog_link(self, project, url):
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return tags.link_to(project, url, target='_blank')
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commit_hash_pattern = re.compile(r'^.{40}$')
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def get_changelog_url(self, project, old_version, new_version):
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projects = {
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'rattail': 'rattail',
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'rattail-tempmon': 'rattail-tempmon',
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'Tailbone': 'tailbone',
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}
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if project not in projects:
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return
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if self.commit_hash_pattern.match(new_version):
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if new_version == old_version:
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return 'https://rattailproject.org/trac/log/{}/?rev={}&limit=100'.format(
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projects[project], new_version)
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else:
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return 'https://rattailproject.org/trac/log/{}/?rev={}&stop_rev={}&limit=100'.format(
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projects[project], new_version, old_version)
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elif re.match(r'^\d+\.\d+\.\d+$', new_version):
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return 'https://rattailproject.org/trac/browser/{}/CHANGES.rst?rev=v{}'.format(
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projects[project], new_version)
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else:
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return 'https://rattailproject.org/trac/browser/{}/CHANGES.rst'.format(
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projects[project])
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def render_diff_field(self, field, diff):
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old_version = diff.old_value(field)
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new_version = diff.new_value(field)
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url = self.get_changelog_url(field, old_version, new_version)
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if url:
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return self.changelog_link(field, url)
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return field
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def render_diff_value(self, field, value):
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if value is None:
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return ""
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if value.startswith("u'") and value.endswith("'"):
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return value[2:1]
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return value
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def parse_requirements(self, upgrade, type_):
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packages = {}
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path = self.rattail_config.upgrade_filepath(upgrade.uuid, filename='requirements.{}.txt'.format(type_))
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session = PipSession()
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for req in parse_requirements(path, session=session):
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version = self.version_from_requirement(req)
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packages[req.name] = version
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return packages
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def version_from_requirement(self, req):
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if req.specifier:
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match = re.match(r'^==(.*)$', six.text_type(req.specifier))
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if match:
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return match.group(1)
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return six.text_type(req.specifier)
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elif req.link:
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match = re.match(r'^.*@(.*)#egg=.*$', six.text_type(req.link))
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if match:
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return match.group(1)
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return six.text_type(req.link)
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return ""
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def download_path(self, upgrade, filename):
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return self.rattail_config.upgrade_filepath(upgrade.uuid, filename=filename)
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def download_content_type(self, path, filename):
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return 'text/plain'
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def before_create_flush(self, upgrade, form):
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upgrade.created_by = self.request.user
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upgrade.status_code = self.enum.UPGRADE_STATUS_PENDING
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# TODO: this was an attempt to make the progress bar survive Apache restart,
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# but it didn't work... need to "fork" instead of waiting for execution?
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# def make_execute_progress(self):
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# key = '{}.execute'.format(self.get_grid_key())
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# return SessionProgress(self.request, key, session_type='file')
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def execute_instance(self, upgrade, user, **kwargs):
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session = orm.object_session(upgrade)
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self.handler.mark_executing(upgrade)
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session.commit()
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self.handler.do_execute(upgrade, user, **kwargs)
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def execute_progress(self):
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upgrade = self.get_instance()
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key = '{}.execute'.format(self.get_grid_key())
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session = get_progress_session(self.request, key)
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if session.get('complete'):
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msg = session.get('success_msg')
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if msg:
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self.request.session.flash(msg)
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elif session.get('error'):
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self.request.session.flash(session.get('error_msg', "An unspecified error occurred."), 'error')
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data = dict(session)
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path = self.rattail_config.upgrade_filepath(upgrade.uuid, filename='stdout.log')
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offset = session.get('stdout.offset', 0)
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if os.path.exists(path):
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size = os.path.getsize(path) - offset
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if size:
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with open(path, 'rb') as f:
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f.seek(offset)
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chunk = f.read(size)
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data['stdout'] = chunk.decode('utf8').replace('\n', '<br />')
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session['stdout.offset'] = offset + size
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session.save()
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return data
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def delete_instance(self, upgrade):
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self.handler.delete_files(upgrade)
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super(UpgradeView, self).delete_instance(upgrade)
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@classmethod
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def defaults(cls, config):
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route_prefix = cls.get_route_prefix()
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url_prefix = cls.get_url_prefix()
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permission_prefix = cls.get_permission_prefix()
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model_key = cls.get_model_key()
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# execution progress
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config.add_route('{}.execute_progress'.format(route_prefix), '{}/{{{}}}/execute/progress'.format(url_prefix, model_key))
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config.add_view(cls, attr='execute_progress', route_name='{}.execute_progress'.format(route_prefix),
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permission='{}.execute'.format(permission_prefix), renderer='json')
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cls._defaults(config)
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def includeme(config):
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UpgradeView.defaults(config)
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