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import xml.etree.ElementTree as ET
import requests
import time
from datetime import datetime
from .. import app, db
from .models import Category, Maintainer, Package, PackageVersion
SYNC_BUFFER_SECS = 60*60 #1 hour
proj_url = "https://api.gentoo.org/metastructure/projects.xml"
pkg_url_base = "https://packages.gentoo.org/"
http_session = requests.session()
def get_project_data():
projects = {}
data = http_session.get(proj_url)
if not data:
print("Failed retrieving projects.xml")
return projects
root = ET.fromstring(data.content)
# Parsing is based on http://www.gentoo.org/dtd/projects.dtd as of 2016-11-10
if root.tag.lower() != 'projects':
print("Downloaded projects.xml root tag isn't 'projects'")
return projects
for proj_elem in root:
if proj_elem.tag.lower() != 'project':
print("Skipping unknown <projects> subtag <%s>" % proj_elem.tag)
continue
proj = {}
for elem in proj_elem:
tag = elem.tag.lower()
if tag in ['email']:
proj[tag] = elem.text.lower()
if tag in ['name', 'url', 'description']:
proj[tag] = elem.text
elif tag == 'member':
member = {}
if 'is-lead' in elem.attrib and elem.attrib['is-lead'] == '1':
member['is_lead'] = True
for member_elem in elem:
member_tag = member_elem.tag.lower()
if member_tag in ['email']:
member[member_tag] = member_elem.text.lower()
if member_tag in ['name', 'role']:
member[member_tag] = member_elem.text
if 'email' in member:
if 'members' not in proj:
proj['members'] = []
proj['members'].append(member)
elif tag == 'subproject':
if 'ref' in elem.attrib:
if 'subprojects' not in proj:
proj['subprojects'] = []
# subprojects will be a list of (subproject_email, inherit-members) tuples where inherit-members is True or False. TODO: Might change if sync code will want it differently
proj['subprojects'].append((elem.attrib['ref'].lower(), True if ('inherit-members' in elem.attrib and elem.attrib['inherit-members'] == '1') else False))
else:
print("Invalid <subproject> tag inside project %s - required 'ref' attribute missing" % proj['email'] if 'email' in proj else "<unknown>")
else:
print("Skipping unknown <project> subtag <%s>" % tag)
if 'email' in proj:
projects[proj['email']] = proj
else:
print("Skipping incomplete project data due to lack of required email identifier: %s" % (proj,))
return projects
def sync_projects():
projects = get_project_data()
existing_maintainers = {}
# TODO: Use UPSERT instead (on_conflict_do_update) if we can rely on postgresql:9.5
for maintainer in Maintainer.query.all():
existing_maintainers[maintainer.email] = maintainer
for email, data in projects.items():
if email in existing_maintainers:
print ("Updating project %s" % email)
existing_maintainers[email].is_project = True
if 'description' in data:
existing_maintainers[email].description = data['description']
if 'name' in data:
existing_maintainers[email].name = data['name']
if 'url' in data:
existing_maintainers[email].url = data['url']
else:
print ("Adding project %s" % email)
new_maintainer = Maintainer(email=email, is_project=True, description=data['description'], name=data['name'], url=data['url'])
db.session.add(new_maintainer)
existing_maintainers[email] = new_maintainer
members = []
if 'subprojects' in data:
for subproject_email, inherit_members in data['subprojects']:
# TODO: How should we handle inherit_members?
if subproject_email in existing_maintainers:
members.append(existing_maintainers[subproject_email])
else:
print("Creating new project entry for subproject: %s" % subproject_email)
new_subproject = Maintainer(email=subproject_email, is_project=True)
db.session.add(new_subproject)
existing_maintainers[subproject_email] = new_subproject
members.append(new_subproject)
if 'members' in data:
for member in data['members']:
if member['email'] in existing_maintainers:
# TODO: Stop overwriting the name from master data, if/once we have a proper sync source for individual maintainers (Gentoo LDAP?)
if 'name' in member:
existing_maintainers[member['email']].name = member['name']
members.append(existing_maintainers[member['email']])
else:
print("Adding individual maintainer %s" % member['email'])
new_maintainer = Maintainer(email=member['email'], is_project=False, name=member['name'] if 'name' in member else None)
db.session.add(new_maintainer)
existing_maintainers[member['email']] = new_maintainer
members.append(new_maintainer)
# TODO: Include role information in the association?
existing_maintainers[email].members = members
db.session.commit()
def sync_categories():
url = pkg_url_base + "categories.json"
data = http_session.get(url)
# TODO: Handle response error (if not data)
categories = data.json()
existing_categories = {}
# TODO: Use UPSERT instead (on_conflict_do_update) if we can rely on postgresql:9.5
for cat in Category.query.all():
existing_categories[cat.name] = cat
for category in categories:
if category['name'] in existing_categories:
existing_categories[category['name']].description = category['description']
else:
new_cat = Category(name=category['name'], description=category['description'])
db.session.add(new_cat)
db.session.commit()
def sync_packages():
for category in Category.query.all():
data = http_session.get(pkg_url_base + "categories/" + category.name + ".json")
if not data:
print("No JSON data for category %s" % category.name) # FIXME: Better handling; mark category as inactive/gone?
continue
packages = data.json()['packages']
# TODO: Use UPSERT instead (on_conflict_do_update)
existing_packages = {pkg.name: pkg for pkg in category.packages}
for package in packages:
if package['name'] in existing_packages:
continue # TODO: Update description once we keep that in DB
else:
new_pkg = Package(category=category, name=package['name'])
db.session.add(new_pkg)
db.session.commit()
def sync_versions():
cnt = 0
ts = datetime.utcfromtimestamp(time.time() - SYNC_BUFFER_SECS)
now = datetime.utcnow()
existing_maintainers = {}
for maintainer in Maintainer.query.all():
existing_maintainers[maintainer.email] = maintainer
packages_to_sync = Package.query.filter(Package.last_sync_ts < ts).order_by(Package.last_sync_ts).all()
print("Going to sync %d packages%s" % (len(packages_to_sync), (" (oldest sync UTC timestamp: %s)" % packages_to_sync[0].last_sync_ts if len(packages_to_sync) else "")))
for package in packages_to_sync:
cnt += 1
data = http_session.get(pkg_url_base + "packages/" + package.full_name + ".json")
if not data:
print("No JSON data for package %s" % package.full_name) # FIXME: Handle better; e.g mark the package as removed if no pkgmove update
continue
pkg = data.json()
print ("Updating package: %s" % package.full_name)
if 'description' in pkg:
package.description = pkg['description']
maintainers = []
if 'maintainers' in pkg:
for maint in pkg['maintainers']:
assert (
'email' in maint and 'type' in maint,
"Package %s maintainer %s entry not GLEP 67 valid" % (package.full_name, maint)
)
email = maint['email'].lower()
if email in existing_maintainers:
maintainers.append(existing_maintainers[email])
else:
is_project = False
if maint['type'] == 'project':
is_project = True
print("Adding %s maintainer %s" % ("project" if is_project else "individual", email))
new_maintainer = Maintainer(email=email, is_project=is_project, name=maint['name'] if 'name' in maint else None)
db.session.add(new_maintainer)
existing_maintainers[email] = new_maintainer
maintainers.append(new_maintainer)
# Intentionally outside if 'maintainers' in pkg, because if there are no maintainers in JSON, it's falled to maintainer-needed and we need to clean out old maintainer entries
package.maintainers = maintainers # TODO: Retain order to know who is primary; retain description associated with the maintainership
package.last_sync_ts = now
if not cnt % 100:
print("%d packages updated, committing DB transaction" % cnt)
db.session.commit()
now = datetime.utcnow()
db.session.commit()
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