/usr/lib/python2.7/dist-packages/aptly/publisher/__init__.py is in python-aptly 0.12.10-1.
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import time
import re
import logging
import yaml
import apt_pkg
from aptly.exceptions import AptlyException, NoSuchPublish
from aptly.decorators import CachedMethod
lg = logging.getLogger(__name__)
def load_publish(publish):
with open(publish, 'r') as publish_file:
return yaml.load(publish_file)
class PublishManager(object):
"""
Manage multiple publishes
"""
def __init__(self, client, storage=""):
self.client = client
self._publishes = {}
self.storage = storage
self.timestamp = int(time.time())
def publish(self, distribution, storage=""):
"""
Get or create publish
"""
try:
return self._publishes[distribution]
except KeyError:
self._publishes[distribution] = Publish(self.client, distribution, timestamp=self.timestamp, storage=(storage or self.storage))
return self._publishes[distribution]
def add(self, snapshot, distributions, component='main', storage=""):
""" Add mirror or repo to publish """
for dist in distributions:
self.publish(dist, storage=storage).add(snapshot, component)
def restore_publish(self, components, restore_file, recreate):
publish_file = load_publish(restore_file)
publish_source = Publish(self.client, publish_file.get('publish'), storage=publish_file.get('storage', self.storage))
publish_source.restore_publish(publish_file,
components=components,
recreate=recreate)
def dump_publishes(self, publishes_to_save, dump_dir, prefix):
if len(dump_dir) > 1 and dump_dir[-1] == '/':
dump_dir = dump_dir[:-1]
save_list = []
save_all = True
if publishes_to_save and not ('all' in publishes_to_save):
save_all = False
re_publish = None
if len(publishes_to_save) == 1 and re.search(r'\(.*\)', publishes_to_save[0]):
re_publish = re.compile(publishes_to_save[0])
publishes = self.client.do_get('/publish')
for publish in publishes:
name = "{}{}{}".format(publish['Storage']+":" if publish['Storage']
else "", publish['Prefix']+"/" if
publish['Prefix'] else "",
publish['Distribution'])
if not re_publish or re_publish.match(name):
if save_all or name in publishes_to_save or re_publish:
current_publish = Publish(self.client, name, load=True, storage=publish.get('Storage', self.storage))
if current_publish not in save_list:
save_list.append(current_publish)
if not save_all and not re_publish and len(save_list) != len(publishes_to_save):
raise Exception('Publish(es) required not found')
for publish in save_list:
save_path = ''.join([dump_dir, '/', prefix, publish.name.replace('/', '-'), '.yml'])
publish.save_publish(save_path)
def _publish_match(self, publish, names=False, name_only=False):
"""
Check if publish name matches list of names or regex patterns
"""
if names:
for name in names:
if not name_only and isinstance(name, re._pattern_type):
if re.match(name, publish.name):
return True
else:
operand = name if name_only else [name, './%s' % name]
if publish in operand:
return True
return False
else:
return True
def do_publish(self, *args, **kwargs):
try:
publish_dist = kwargs.pop('dist')
except KeyError:
publish_dist = None
try:
publish_names = kwargs.pop('names')
except KeyError:
publish_names = None
for publish in self._publishes.values():
if self._publish_match(publish.name, publish_names or publish_dist, publish_names):
publish.do_publish(*args, **kwargs)
else:
lg.info("Skipping publish %s not matching publish names" % publish.name)
def list_uniq(self, seq):
keys = {}
for e in seq:
keys[e] = 1
return list(keys.keys())
def do_purge(self, config, components=[], hard_purge=False):
(repo_dict, publish_dict) = self.get_repo_information(config, self.client, hard_purge, components)
publishes = self.client.do_get('/publish')
publish_list = []
for publish in publishes:
name = '{}/{}'.format(publish['Prefix'].replace("/", "_"), publish['Distribution'])
publish_list.append(Publish(self.client, name, load=True))
for publish in publish_list:
repo_dict = publish.purge_publish(repo_dict, publish_dict, components, publish=True)
if hard_purge:
self.remove_unused_packages(repo_dict)
self.cleanup_snapshots()
@staticmethod
def get_repo_information(config, client, fill_repo=False, components=[]):
""" fill two dictionnaries : one containing all the packages for every repository
and the second one associating to every component of every publish its repository"""
repo_dict = {}
publish_dict = {}
for origin in ['repo', 'mirror']:
for name, repo in config.get(origin, {}).items():
if components and repo.get('component') not in components:
continue
if fill_repo and origin == 'repo':
packages = Publish._get_packages("repos", name)
repo_dict[name] = packages
for distribution in repo.get('distributions'):
publish_name = str.join('/', distribution.split('/')[:-1])
publish_dict[(publish_name, repo.get('component'))] = name
return (repo_dict, publish_dict)
def remove_unused_packages(self, repo_dict):
for repo_name, packages in repo_dict.items():
if packages:
self.client.do_delete('/repos/%s/packages' % repo_name, data={'PackageRefs': packages})
def cleanup_snapshots(self):
snapshots = self.client.do_get('/snapshots', {'sort': 'time'})
exclude = []
# Add currently published snapshots into exclude list
publishes = self.client.do_get('/publish')
for publish in publishes:
exclude.extend(
[x['Name'] for x in publish['Sources']]
)
# Add last snapshots into exclude list
# TODO: ignore snapshots that are source for merged snapshots
snapshot_latest = []
for snapshot in snapshots:
base_name = snapshot['Name'].split('-')[0]
if base_name not in snapshot_latest:
snapshot_latest.append(base_name)
if snapshot['Name'] not in exclude:
lg.debug("Not deleting latest snapshot %s" % snapshot['Name'])
exclude.append(snapshot['Name'])
exclude = self.list_uniq(exclude)
for snapshot in snapshots:
if snapshot['Name'] not in exclude:
lg.info("Deleting snapshot %s" % snapshot['Name'])
try:
self.client.do_delete('/snapshots/%s' % snapshot['Name'])
except AptlyException as e:
if e.res.status_code == 409:
lg.warning("Snapshot %s is being used, can't delete" % snapshot['Name'])
else:
raise
class Publish(object):
"""
Single publish object
"""
def __init__(self, client, distribution, timestamp=None, recreate=False, load=False, merge_prefix='_', storage="", architectures=[]):
self.client = client
self.recreate = recreate
self.architectures = architectures
# Try to get storage from distribution (eg. s3:mys3:xenial)
dist_split = distribution.split(':')
if len(dist_split) > 1:
self.storage = "{}:{}".format(dist_split[0], dist_split[1])
distribution = dist_split[-1]
else:
self.storage = storage
dist_split = distribution.split('/')
self.distribution = dist_split[-1]
if dist_split[0] != self.distribution:
self.prefix = "_".join(dist_split[:-1])
else:
self.prefix = ''
self.name = '%s/%s' % (self.prefix or '.', self.distribution)
self.full_name = "{}{}{}".format(self.storage+":" if self.storage else
"", self.prefix+"/" if self.prefix else
"", self.distribution)
if not timestamp:
self.timestamp = int(time.time())
else:
self.timestamp = timestamp
self.merge_prefix = merge_prefix
self.components = {}
self.publish_snapshots = []
if load:
# Load information from remote immediately
self.load()
def __eq__(self, other):
if not isinstance(other, Publish):
return False
diff, equal = self.compare(other)
if not diff:
return True
def __ne__(self, other):
return not self.__eq__(other)
def compare(self, other, components=[]):
"""
Compare two publishes
It expects that other publish is same or older than this one
Return tuple (diff, equal) of dict {'component': ['snapshot']}
"""
lg.debug("Comparing publish %s (%s) and %s (%s)" % (self.name, self.storage or "local", other.name, other.storage or "local"))
diff, equal = ({}, {})
for component, snapshots in self.components.items():
if component not in list(other.components.keys()):
# Component is missing in other
diff[component] = snapshots
continue
equal_snapshots = list(set(snapshots).intersection(other.components[component]))
if equal_snapshots:
lg.debug("Equal snapshots for %s: %s" % (component, equal_snapshots))
equal[component] = equal_snapshots
diff_snapshots = list(set(snapshots).difference(other.components[component]))
if diff_snapshots:
lg.debug("Different snapshots for %s: %s" % (component, diff_snapshots))
diff[component] = diff_snapshots
return (diff, equal)
@staticmethod
@CachedMethod
def _get_packages(client, source_type, source_name):
return client.do_get('/{}/{}/packages'.format(source_type, source_name))
@staticmethod
@CachedMethod
def _get_publishes(client):
return client.do_get('/publish')
@staticmethod
@CachedMethod
def _get_snapshots(client):
return client.do_get('/snapshots', {'sort': 'time'})
def _get_publish(self):
"""
Find this publish on remote
"""
publishes = self._get_publishes(self.client)
for publish in publishes:
if publish['Distribution'] == self.distribution and \
publish['Prefix'].replace("/", "_") == (self.prefix or '.') and \
publish['Storage'] == self.storage:
return publish
raise NoSuchPublish("Publish %s (%s) does not exist" % (self.name, self.storage or "local"))
def _remove_snapshots(self, snapshots):
for snapshot in snapshots:
self.client.do_delete('/snapshots/%s' % snapshot)
def save_publish(self, save_path):
"""
Serialize publish in YAML
"""
timestamp = time.strftime("%Y%m%d%H%M%S")
yaml_dict = {}
yaml_dict["publish"] = self.name
yaml_dict["name"] = timestamp
yaml_dict["components"] = []
yaml_dict["storage"] = self.storage
for component, snapshots in self.components.items():
packages = self.get_packages(component)
package_dict = []
for package in packages:
(arch, name, version, ref) = self.parse_package_ref(package)
package_dict.append({'package': name, 'version': version, 'arch': arch, 'ref': ref})
snapshot = self._find_snapshot(snapshots[0])
yaml_dict["components"].append({'component': component, 'snapshot': snapshot['Name'],
'description': snapshot['Description'], 'packages': package_dict})
name = self.name.replace('/', '-')
lg.info("Saving publish %s in %s" % (name, save_path))
with open(save_path, 'w') as save_file:
yaml.dump(yaml_dict, save_file, default_flow_style=False)
def purge_publish(self, repo_dict, publish_dict, components=[], publish=False):
apt_pkg.init_system()
new_publish_snapshots = []
for snapshot in self.publish_snapshots:
# packages to be kept
processed = []
name = snapshot["Name"]
component = snapshot["Component"]
purge_packages = []
location = self.name.split('/')[0].replace('_', '/')
if (location, component) in publish_dict:
repo_name = publish_dict[(location, component)]
else:
new_publish_snapshots.append(snapshot)
continue
if components and component not in components:
new_publish_snapshots.append(snapshot)
if repo_dict:
repo_dict[repo_name] = []
continue
packages = self._get_packages(self.client, "snapshots", name)
packages = sorted(packages, key=lambda x: self.parse_package_ref(x)[2], reverse=True, cmp=apt_pkg.version_compare)
for package in packages:
package_name = self.parse_package_ref(package)[1]
if package_name not in processed:
processed.append(package_name)
if repo_dict and repo_name in repo_dict and package in repo_dict[repo_name]:
repo_dict[repo_name].remove(package)
purge_packages.append(package)
if purge_packages != packages:
snapshot_name = '{}-{}'.format(name, 'purged')
try:
lg.debug("Creating new snapshot: %s" % snapshot_name)
self.client.do_post(
'/snapshots',
data={
'Name': snapshot_name,
'SourceSnapshots': [],
'Description': 'Minimal snapshot from {}'.format(repo_name),
'PackageRefs': purge_packages,
}
)
except AptlyException as e:
if e.res.status_code == 404:
raise Exception('Error while creating snapshot : {}'.format(repr(e)))
else:
lg.debug("Snapshot %s already exist" % snapshot_name)
new_publish_snapshots.append({
'Component': component,
'Name': snapshot_name
})
else:
new_publish_snapshots.append(snapshot)
if self.publish_snapshots != new_publish_snapshots:
self.publish_snapshots = new_publish_snapshots
if publish:
self.do_publish(recreate=False, merge_snapshots=False)
return repo_dict
def restore_publish(self, config, components, recreate=False):
"""
Restore publish from config file
"""
if "all" in components:
components = []
try:
self.load()
publish = True
except NoSuchPublish:
publish = False
new_publish_snapshots = []
to_publish = []
created_snapshots = []
for saved_component in config.get('components', []):
component_name = saved_component.get('component')
if not component_name:
raise Exception("Corrupted file")
if components and component_name not in components:
continue
saved_packages = []
if not saved_component.get('packages'):
raise Exception("Component %s is empty" % component_name)
for package in saved_component.get('packages'):
package_ref = '{} {} {} {}'.format(package.get('arch'), package.get('package'), package.get('version'), package.get('ref'))
saved_packages.append(package_ref)
to_publish.append(component_name)
snapshot_name = '{}-{}'.format("restored", saved_component.get('snapshot'))
lg.debug("Creating snapshot %s for component %s of packages: %s"
% (snapshot_name, component_name, saved_packages))
try:
self.client.do_post(
'/snapshots',
data={
'Name': snapshot_name,
'SourceSnapshots': [],
'Description': saved_component.get('description'),
'PackageRefs': saved_packages,
}
)
created_snapshots.append(snapshot_name)
except AptlyException as e:
if e.res.status_code == 404:
# delete all the previously created
# snapshots because the file is corrupted
self._remove_snapshots(created_snapshots)
raise Exception("Source snapshot or packages don't exist")
else:
raise
new_publish_snapshots.append({
'Component': component_name,
'Name': snapshot_name
})
if components:
self.publish_snapshots = [x for x in self.publish_snapshots if x['Component'] not in components and x['Component'] not in to_publish]
check_components = [x for x in new_publish_snapshots if x['Component'] in components]
if len(check_components) != len(components):
self._remove_snapshots(created_snapshots)
raise Exception("Not possible to find all the components required in the backup file")
self.publish_snapshots += new_publish_snapshots
self.do_publish(recreate=recreate, merge_snapshots=False)
def load(self):
"""
Load publish info from remote
"""
publish = self._get_publish()
self.architectures = publish['Architectures']
for source in publish['Sources']:
component = source['Component']
snapshot = source['Name']
self.publish_snapshots.append({
'Component': component,
'Name': snapshot
})
snapshot_remote = self._find_snapshot(snapshot)
for source in self._get_source_snapshots(snapshot_remote, fallback_self=True):
self.add(source, component)
def get_packages(self, component=None, components=[], packages=None):
"""
Return package refs for given components
"""
if component:
components = [component]
package_refs = []
for snapshot in self.publish_snapshots:
if component and snapshot['Component'] not in components:
# We don't want packages for this component
continue
component_refs = self._get_packages(self.client, "snapshots", snapshot['Name'])
if packages:
# Filter package names
for ref in component_refs:
if self.parse_package_ref(ref)[1] in packages:
package_refs.append(ref)
else:
package_refs.extend(component_refs)
return package_refs
def parse_package_ref(self, ref):
"""
Return tuple of architecture, package_name, version, id
"""
if not ref:
return None
parsed = re.match('(.*)\ (.*)\ (.*)\ (.*)', ref)
return parsed.groups()
def add(self, snapshot, component='main'):
"""
Add snapshot of component to publish
"""
try:
self.components[component].append(snapshot)
except KeyError:
self.components[component] = [snapshot]
def _find_snapshot(self, name):
"""
Find snapshot on remote by name or regular expression
"""
remote_snapshots = self._get_snapshots(self.client)
for remote in reversed(remote_snapshots):
if remote["Name"] == name or \
re.match(name, remote["Name"]):
return remote
return None
def _get_source_snapshots(self, snapshot, fallback_self=False):
"""
Get list of source snapshot names of given snapshot
TODO: we have to decide by description at the moment
"""
if not snapshot:
return []
source_snapshots = re.findall(r"'([\w\d\.-]+)'", snapshot['Description'])
if not source_snapshots and fallback_self:
source_snapshots = [snapshot['Name']]
source_snapshots.sort()
return source_snapshots
def merge_snapshots(self):
"""
Create component snapshots by merging other snapshots of same component
"""
self.publish_snapshots = []
for component, snapshots in self.components.items():
if len(snapshots) <= 1:
# Only one snapshot, no need to merge
lg.debug("Component %s has only one snapshot %s, not creating merge snapshot" % (component, snapshots))
self.publish_snapshots.append({
'Component': component,
'Name': snapshots[0]
})
continue
# Look if merged snapshot doesn't already exist
remote_snapshot = self._find_snapshot(r'^%s%s-%s-\d+' % (self.merge_prefix, self.name.replace('./', '').replace('/', '-'), component))
if remote_snapshot:
source_snapshots = self._get_source_snapshots(remote_snapshot)
# Check if latest merged snapshot has same source snapshots like us
snapshots_want = list(snapshots)
snapshots_want.sort()
lg.debug("Comparing snapshots: snapshot_name=%s, snapshot_sources=%s, wanted_sources=%s" % (remote_snapshot['Name'], source_snapshots, snapshots_want))
if snapshots_want == source_snapshots:
lg.info("Remote merge snapshot already exists: %s (%s)" % (remote_snapshot['Name'], source_snapshots))
self.publish_snapshots.append({
'Component': component,
'Name': remote_snapshot['Name']
})
continue
snapshot_name = '%s%s-%s-%s' % (self.merge_prefix, self.name.replace('./', '').replace('/', '-'), component, self.timestamp)
lg.info("Creating merge snapshot %s for component %s of snapshots %s" % (snapshot_name, component, snapshots))
package_refs = []
for snapshot in snapshots:
# Get package refs from each snapshot
packages = self._get_packages(self.client, "snapshots", snapshot)
package_refs.extend(packages)
try:
self.client.do_post(
'/snapshots',
data={
'Name': snapshot_name,
'SourceSnapshots': snapshots,
'Description': "Merged from sources: %s" % ', '.join("'%s'" % snap for snap in snapshots),
'PackageRefs': package_refs,
}
)
except AptlyException as e:
if e.res.status_code == 400:
lg.warning("Error creating snapshot %s, assuming it already exists" % snapshot_name)
else:
raise
self.publish_snapshots.append({
'Component': component,
'Name': snapshot_name
})
def drop_publish(self):
lg.info("Deleting publish, distribution=%s, storage=%s" % (self.name, self.storage or "local"))
self.client.do_delete('/publish/%s' % (self.full_name))
def update_publish(self, force_overwrite=False, publish_contents=False,
acquire_by_hash=True):
lg.info("Updating publish, distribution=%s storage=%s snapshots=%s" %
(self.name, self.storage or "local", self.publish_snapshots))
self.client.do_put(
'/publish/%s' % (self.full_name),
{
'Snapshots': self.publish_snapshots,
'ForceOverwrite': force_overwrite,
'SkipContents': not publish_contents,
'AcquireByHash': acquire_by_hash,
}
)
def create_publish(self, force_overwrite=False, publish_contents=False,
architectures=None, acquire_by_hash=True):
lg.info("Creating new publish, distribution=%s storage=%s snapshots=%s, architectures=%s" %
(self.name, self.storage or "local", self.publish_snapshots, architectures))
if self.prefix:
prefix = '%s%s' % ("/"+self.storage+":" or "/", self.prefix)
else:
prefix = '%s' % ("/"+self.storage+":" or "")
opts = {
"Storage": self.storage,
"SourceKind": "snapshot",
"Distribution": self.distribution,
"Sources": self.publish_snapshots,
"ForceOverwrite": force_overwrite,
'SkipContents': not publish_contents,
'AcquireByHash': acquire_by_hash,
}
if architectures or self.architectures:
opts['Architectures'] = architectures or self.architectures
self.client.do_post(
'/publish%s' % (prefix or ''),
opts
)
def do_publish(self, recreate=False, no_recreate=False,
force_overwrite=False, publish_contents=False,
acquire_by_hash=False, architectures=None,
merge_snapshots=True, only_latest=False, config=None,
components=[]):
if merge_snapshots:
self.merge_snapshots()
try:
publish = self._get_publish()
except NoSuchPublish:
publish = False
if only_latest:
(_, publish_dict) = PublishManager.get_repo_information(config, self.client)
self.purge_publish([], publish_dict, components, False)
if not publish:
# New publish
self.create_publish(force_overwrite, publish_contents, architectures
or self.architectures, acquire_by_hash)
else:
# Test if publish is up to date
to_publish = [x['Name'] for x in self.publish_snapshots]
published = [x['Name'] for x in publish['Sources']]
to_publish.sort()
published.sort()
if recreate:
lg.info("Recreating publish %s (%s)" % (self.name, self.storage or "local"))
self.drop_publish()
self.create_publish(force_overwrite, publish_contents,
architectures or self.architectures,
acquire_by_hash)
elif to_publish == published:
lg.info("Publish %s (%s) is up to date" % (self.name, self.storage or "local"))
else:
try:
self.update_publish(force_overwrite, publish_contents,
acquire_by_hash)
except AptlyException as e:
if e.res.status_code == 404:
# Publish exists but we are going to add some new
# components. Unfortunately only way is to recreate it
if no_recreate:
lg.error("Cannot update publish %s (adding new components?), falling back to recreating it is disabled so skipping." % self.full_name)
else:
lg.warning("Cannot update publish %s (adding new components?), falling back to recreating it" % self.full_name)
self.drop_publish()
self.create_publish(force_overwrite,
publish_contents,
architectures or self.architectures)
else:
raise
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