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buildouts.py
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buildouts.py
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import json
import zlib
import logging
from datetime import datetime
from pyramid.response import Response
from pyramid.renderers import get_renderer
from whiskers.jsonwrapper import JsonDataWrapper
from whiskers.models import (
Buildout,
Package,
Host,
Version,
DBSession)
class BuildoutsView(object):
"""Buildout views."""
def __init__(self, request):
self.main = get_renderer(
'whiskers:views/templates/master.pt').implementation()
self.request = request
def __call__(self):
"""Main view for whiskers/buildouts."""
buildouts = self.get_buildouts_info()
return {'buildouts': buildouts,
'project': 'whiskers',
'main': self.main}
def get_buildouts_info(self):
"""Return list of dicts containing Buildout info."""
query = DBSession.query(Buildout).join(Buildout.host).\
group_by(Buildout.name).order_by(Buildout.datetime).\
all()
return query
def post(self):
"""Add a new buildout to database."""
try:
data = self.request.params['data']
incoming = data.encode('utf-8')
checksum = zlib.adler32(incoming)
checksum_buildout = Buildout.get_by_checksum(checksum)
if checksum_buildout:
logging.info("Checksum matched")
logging.info("Updating datetime..")
checksum_buildout.datetime = datetime.now()
DBSession.flush()
raise Exception("No changes with existing data.")
logging.info("New checksum")
jsondata = JsonDataWrapper(data)
except KeyError:
return Response('No data. Nothing added.')
except Exception as e:
return Response(str(e))
host = Host.get_by_name(jsondata.hostname)
if not host:
host = Host.add(jsondata.hostname)
self.add_buildout(jsondata, host, checksum)
return Response('Added buildout info to Whiskers.')
def add_buildout(self, data, host, checksum):
packages = []
for package_info in data.packages:
package = Package.get_by_nameversion(package_info['name'],
package_info['version'])
if not package:
equation = package_info.get('equation', None)
version = Version.get_by_version(package_info['version']) or\
Version.add(package_info['version'], equation)
requirements = self.get_requirements(
package_info['requirements'], data.versionmap)
package = Package.add(package_info['name'],
version,
requirements)
packages.append(package)
buildout = Buildout(data.name, host, checksum, packages,
data.config)
DBSession.add(buildout)
return buildout
def get_requirements(self, requirements, versionmap):
"""Return list of package requirements."""
packages = []
for req in requirements:
name = req.get('name')
version = req.get('version')
# Below version related code is crap
# TODO: Clean the crap
if not version:
try:
version = versionmap[name]
except KeyError:
version = 'stdlib'
else:
if version != versionmap[name]:
version = versionmap[name]
package = Package.get_by_nameversion(name,
version)
if not package:
equation = req.get('equation', None)
version = Version.get_by_version(version) or\
Version.add(version, equation)
package = Package.add(req['name'], version)
packages.append(package)
return packages
def buildout_view(self):
"""Return a buildout specified by buildout_id."""
buildout_id = self.request.matchdict['buildout_id']
buildout = DBSession.query(Buildout).filter_by(
id=int(buildout_id)).one()
new_buildouts = DBSession.query(Buildout).join(Buildout.host).\
filter(Buildout.host == buildout.host,
Buildout.name == buildout.name,
Buildout.id != buildout_id,
Buildout.datetime > buildout.datetime).\
order_by(Buildout.datetime).all()
older_buildouts = DBSession.query(Buildout).join(Buildout.host).\
filter(Buildout.host == buildout.host,
Buildout.name == buildout.name,
Buildout.datetime < buildout.datetime,
Buildout.id != buildout_id).\
order_by(Buildout.datetime).all()
config = json.loads(buildout.config)
return {'buildout': buildout, 'main': self.main, 'config': config,
'older_buildouts': older_buildouts,
'new_buildouts': new_buildouts}