633 lines
23 KiB
Python
633 lines
23 KiB
Python
import logging
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import random
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from enum import Enum
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from datetime import timedelta, datetime
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from peewee import JOIN_LEFT_OUTER, fn, SQL, IntegrityError
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from playhouse.shortcuts import case
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from cachetools import ttl_cache
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from data.model import (config, DataModelException, tag, db_transaction, storage, permission,
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_basequery)
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from data.database import (Repository, Namespace, RepositoryTag, Star, Image, ImageStorage, User,
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Visibility, RepositoryPermission, RepositoryActionCount,
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Role, RepositoryAuthorizedEmail, TagManifest, DerivedStorageForImage,
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Label, TagManifestLabel, db_for_update, get_epoch_timestamp,
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db_random_func, db_concat_func, RepositorySearchScore)
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from data.text import prefix_search
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from util.itertoolrecipes import take
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logger = logging.getLogger(__name__)
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SEARCH_FIELDS = Enum("SearchFields", ["name", "description"])
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def get_repo_kind_name(repo):
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return Repository.kind.get_name(repo.kind_id)
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def get_repository_count():
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return Repository.select().count()
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def get_public_repo_visibility():
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return _basequery.get_public_repo_visibility()
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def create_repository(namespace, name, creating_user, visibility='private', repo_kind='image'):
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private = Visibility.get(name=visibility)
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namespace_user = User.get(username=namespace)
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repo = Repository.create(name=name, visibility=private, namespace_user=namespace_user,
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kind=Repository.kind.get_id(repo_kind))
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admin = Role.get(name='admin')
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yesterday = datetime.now() - timedelta(days=1)
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RepositoryActionCount.create(repository=repo, count=0, date=yesterday)
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RepositorySearchScore.create(repository=repo, score=0)
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if creating_user and not creating_user.organization:
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RepositoryPermission.create(user=creating_user, repository=repo, role=admin)
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if creating_user.username != namespace:
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# Permission prototypes only work for orgs
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permission.apply_default_permissions(repo, creating_user)
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return repo
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def get_repository(namespace_name, repository_name, kind_filter=None):
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try:
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return _basequery.get_existing_repository(namespace_name, repository_name,
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kind_filter=kind_filter)
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except Repository.DoesNotExist:
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return None
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def get_or_create_repository(namespace, name, creating_user, visibility='private',
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repo_kind='image'):
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repo = get_repository(namespace, name, repo_kind)
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if repo is None:
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repo = create_repository(namespace, name, creating_user, visibility, repo_kind)
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return repo
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def purge_repository(namespace_name, repository_name):
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""" Completely delete all traces of the repository. Will return True upon
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complete success, and False upon partial or total failure. Garbage
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collection is incremental and repeatable, so this return value does
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not need to be checked or responded to.
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"""
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try:
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repo = _basequery.get_existing_repository(namespace_name, repository_name)
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except Repository.DoesNotExist:
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return False
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# Delete all tags to allow gc to reclaim storage
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previously_referenced = tag.purge_all_tags(repo)
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unreferenced_image_q = Image.select(Image.id).where(Image.repository == repo)
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if len(previously_referenced) > 0:
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unreferenced_image_q = (unreferenced_image_q
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.where(~(Image.id << list(previously_referenced))))
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unreferenced_candidates = set(img[0] for img in unreferenced_image_q.tuples())
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# Gc to remove the images and storage
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all_repo_images = previously_referenced | unreferenced_candidates
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successful_gc = garbage_collect_repo(repo, all_repo_images)
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if not successful_gc:
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return False
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# Delete the rest of the repository metadata
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try:
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fetched = _basequery.get_existing_repository(namespace_name, repository_name)
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except Repository.DoesNotExist:
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return False
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fetched.delete_instance(recursive=True, delete_nullable=False)
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# Run callbacks
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for callback in config.repo_cleanup_callbacks:
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callback(namespace_name, repository_name)
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return True
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@ttl_cache(maxsize=1, ttl=600)
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def _get_gc_expiration_policies():
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policy_tuples_query = (Namespace
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.select(Namespace.removed_tag_expiration_s)
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.distinct()
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.limit(100) # This sucks but it's the only way to limit memory
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.tuples())
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return [policy[0] for policy in policy_tuples_query]
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def get_random_gc_policy():
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""" Return a single random policy from the database to use when garbage collecting.
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"""
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return random.choice(_get_gc_expiration_policies())
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def find_repository_with_garbage(limit_to_gc_policy_s):
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expiration_timestamp = get_epoch_timestamp() - limit_to_gc_policy_s
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try:
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candidates = (RepositoryTag
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.select(RepositoryTag.repository)
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.join(Repository)
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.join(Namespace, on=(Repository.namespace_user == Namespace.id))
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.where(~(RepositoryTag.lifetime_end_ts >> None),
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(RepositoryTag.lifetime_end_ts <= expiration_timestamp),
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(Namespace.removed_tag_expiration_s == limit_to_gc_policy_s))
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.limit(500)
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.distinct()
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.alias('candidates'))
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found = (RepositoryTag
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.select(candidates.c.repository_id)
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.from_(candidates)
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.order_by(db_random_func())
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.get())
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if found is None:
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return
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return Repository.get(Repository.id == found.repository_id)
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except RepositoryTag.DoesNotExist:
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return None
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except Repository.DoesNotExist:
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return None
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def garbage_collect_repo(repo, extra_candidate_set=None):
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""" Garbage collect the specified repository object. This will remove all
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images, derived images, and other associated metadata, for images which
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are no longer referenced by a tag or another image which is itself
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tagged. Returns True if garbage collection was completed without error
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and False otherwise. Retries are safe and work incrementally, so this
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return value does not need to be checked or handled.
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"""
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logger.debug('Garbage collecting repository %s', repo.id)
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storage_id_whitelist = set()
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candidate_orphan_image_set = tag.garbage_collect_tags(repo)
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if extra_candidate_set:
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candidate_orphan_image_set.update(extra_candidate_set)
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if not len(candidate_orphan_image_set):
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logger.debug('No candidate images for GC for repo: %s', repo.id)
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return True
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candidates_orphans = list(candidate_orphan_image_set)
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with db_transaction():
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Candidate = Image.alias()
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Tagged = Image.alias()
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ancestor_superset = Tagged.ancestors ** db_concat_func(Candidate.ancestors, Candidate.id, '/%')
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# We are going to compute all images which are being referenced in two ways:
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# First, we will find all images which have their ancestor paths appear in
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# another image. Secondly, we union in all of the candidate images which are
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# directly referenced by a tag. This can be used in a subquery to directly
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# find which candidates are being referenced without any client side
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# computation or extra round trips.
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direct_referenced = (RepositoryTag
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.select(RepositoryTag.image)
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.where(RepositoryTag.repository == repo.id,
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RepositoryTag.image << candidates_orphans))
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cloned = direct_referenced.clone().alias('direct_ref')
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directly_referenced_subquery = Image.alias().select(cloned.c.image_id).from_(cloned)
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ancestor_referenced = (Candidate
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.select(Candidate.id)
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.join(Tagged, on=ancestor_superset)
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.join(RepositoryTag, on=(Tagged.id == RepositoryTag.image))
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.where(RepositoryTag.repository == repo.id,
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Candidate.id << candidates_orphans,
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~(Candidate.id << directly_referenced_subquery)))
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referenced_candidates = (direct_referenced | ancestor_referenced)
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# We desire a few pieces of information from the database from the following
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# query: all of the image ids which are associated with this repository,
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# and the storages which are associated with those images.
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unreferenced_candidates = (Image
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.select(Image.id, Image.docker_image_id,
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ImageStorage.id, ImageStorage.uuid)
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.join(ImageStorage)
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.where(Image.id << candidates_orphans,
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~(Image.id << referenced_candidates)))
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image_ids_to_remove = [candidate.id for candidate in unreferenced_candidates]
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if len(image_ids_to_remove) > 0:
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logger.info('Cleaning up unreferenced images: %s', image_ids_to_remove)
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storage_id_whitelist = set([candidate.storage_id for candidate in unreferenced_candidates])
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# Lookup any derived images for the images to remove.
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derived = DerivedStorageForImage.select().where(
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DerivedStorageForImage.source_image << image_ids_to_remove)
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has_derived = False
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for derived_image in derived:
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has_derived = True
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storage_id_whitelist.add(derived_image.derivative_id)
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# Delete any derived images and the images themselves.
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if has_derived:
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try:
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(DerivedStorageForImage
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.delete()
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.where(DerivedStorageForImage.source_image << image_ids_to_remove)
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.execute())
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except IntegrityError:
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logger.info('Could not GC derived images %s; will try again soon', image_ids_to_remove)
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return False
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try:
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Image.delete().where(Image.id << image_ids_to_remove).execute()
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except IntegrityError:
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logger.info('Could not GC images %s; will try again soon', image_ids_to_remove)
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return False
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# If any images were removed, GC any orphaned storages.
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if len(image_ids_to_remove) > 0:
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logger.info('Garbage collecting storage for images: %s', image_ids_to_remove)
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storage_ids_removed = set(storage.garbage_collect_storage(storage_id_whitelist))
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# If any storages were removed and cleanup callbacks are registered, call them with
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# the images+storages removed.
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if storage_ids_removed and config.image_cleanup_callbacks:
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image_storages_removed = [candidate for candidate in unreferenced_candidates
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if candidate.storage_id in storage_ids_removed]
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for callback in config.image_cleanup_callbacks:
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callback(image_storages_removed)
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return True
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def star_repository(user, repository):
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""" Stars a repository. """
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star = Star.create(user=user.id, repository=repository.id)
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star.save()
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def unstar_repository(user, repository):
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""" Unstars a repository. """
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try:
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(Star
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.delete()
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.where(Star.repository == repository.id, Star.user == user.id)
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.execute())
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except Star.DoesNotExist:
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raise DataModelException('Star not found.')
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def set_trust(repo, trust_enabled):
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repo.trust_enabled = trust_enabled
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repo.save()
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def get_user_starred_repositories(user, kind_filter='image'):
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""" Retrieves all of the repositories a user has starred. """
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try:
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repo_kind = Repository.kind.get_id(kind_filter)
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except RepositoryKind.DoesNotExist:
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raise DataModelException('Unknown kind of repository')
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query = (Repository
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.select(Repository, User, Visibility, Repository.id.alias('rid'))
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.join(Star)
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.switch(Repository)
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.join(User)
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.switch(Repository)
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.join(Visibility)
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.where(Star.user == user, Repository.kind == repo_kind))
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return query
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def repository_is_starred(user, repository):
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""" Determines whether a user has starred a repository or not. """
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try:
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(Star
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.select()
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.where(Star.repository == repository.id, Star.user == user.id)
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.get())
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return True
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except Star.DoesNotExist:
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return False
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def get_when_last_modified(repository_ids):
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""" Returns a map from repository ID to the last modified time (in s) for each repository in the
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given repository IDs list.
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"""
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if not repository_ids:
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return {}
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tuples = (RepositoryTag
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.select(RepositoryTag.repository, fn.Max(RepositoryTag.lifetime_start_ts))
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.where(RepositoryTag.repository << repository_ids)
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.group_by(RepositoryTag.repository)
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.tuples())
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last_modified_map = {}
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for record in tuples:
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last_modified_map[record[0]] = record[1]
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return last_modified_map
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def get_stars(repository_ids):
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""" Returns a map from repository ID to the number of stars for each repository in the
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given repository IDs list.
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"""
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if not repository_ids:
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return {}
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tuples = (Star
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.select(Star.repository, fn.Count(Star.id))
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.where(Star.repository << repository_ids)
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.group_by(Star.repository)
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.tuples())
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star_map = {}
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for record in tuples:
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star_map[record[0]] = record[1]
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return star_map
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def get_visible_repositories(username, namespace=None, kind_filter='image', include_public=False,
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start_id=None, limit=None):
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""" Returns the repositories visible to the given user (if any).
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"""
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if not include_public and not username:
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# Short circuit by returning a query that will find no repositories. We need to return a query
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# here, as it will be modified by other queries later on.
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return Repository.select(Repository.id.alias('rid')).where(Repository.id == -1)
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query = (Repository
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.select(Repository.name, Repository.id.alias('rid'),
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Repository.description, Namespace.username, Repository.visibility,
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Repository.kind)
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.switch(Repository)
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.join(Namespace, on=(Repository.namespace_user == Namespace.id)))
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if username:
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# Note: We only need the permissions table if we will filter based on a user's permissions.
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query = query.switch(Repository).distinct().join(RepositoryPermission, JOIN_LEFT_OUTER)
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query = _basequery.filter_to_repos_for_user(query, username, namespace, kind_filter,
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include_public, start_id=start_id)
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if limit is not None:
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query = query.limit(limit).order_by(SQL('rid'))
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return query
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def get_app_repository(namespace_name, repository_name):
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""" Find an application repository. """
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try:
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return _basequery.get_existing_repository(namespace_name, repository_name,
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kind_filter='application')
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except Repository.DoesNotExist:
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return None
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def get_app_search(lookup, search_fields=None, username=None, limit=50):
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if search_fields is None:
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search_fields = set([SEARCH_FIELDS.name.name])
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return get_filtered_matching_repositories(lookup, filter_username=username,
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search_fields=search_fields,
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repo_kind='application', offset=0, limit=limit)
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def get_filtered_matching_repositories(lookup_value, filter_username=None, repo_kind='image',
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offset=0, limit=25, search_fields=None):
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""" Returns an iterator of all repositories matching the given lookup value, with optional
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filtering to a specific user. If the user is unspecified, only public repositories will
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be returned.
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"""
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if search_fields is None:
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search_fields = set([SEARCH_FIELDS.description.name, SEARCH_FIELDS.name.name])
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# Build the unfiltered search query.
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unfiltered_query = _get_sorted_matching_repositories(lookup_value, repo_kind=repo_kind,
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search_fields=search_fields,
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include_private=filter_username is not None)
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# Add a filter to the iterator, if necessary.
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if filter_username is not None:
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iterator = _filter_repositories_visible_to_username(unfiltered_query, filter_username, limit,
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repo_kind)
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else:
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iterator = unfiltered_query
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if offset > 0:
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take(offset, iterator)
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# Return the results.
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return list(take(limit, iterator))
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def _filter_repositories_visible_to_username(unfiltered_query, filter_username, limit, repo_kind):
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encountered = set()
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chunk_count = limit * 2
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unfiltered_page = 0
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iteration_count = 0
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while iteration_count < 10: # Just to be safe
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# Find the next chunk's worth of repository IDs, paginated by the chunk size.
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unfiltered_page = unfiltered_page + 1
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found_ids = [r.id for r in unfiltered_query.paginate(unfiltered_page, chunk_count)]
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# Make sure we haven't encountered these results before. This code is used to handle
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# the case where we've previously seen a result, as pagination is not necessary
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# stable in SQL databases.
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unfiltered_repository_ids = set(found_ids)
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new_unfiltered_ids = unfiltered_repository_ids - encountered
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if not new_unfiltered_ids:
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break
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encountered.update(new_unfiltered_ids)
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# Filter the repositories found to only those visible to the current user.
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query = (Repository
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.select(Repository, Namespace)
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.distinct()
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.join(Namespace, on=(Namespace.id == Repository.namespace_user))
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.switch(Repository)
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.join(RepositoryPermission)
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.where(Repository.id << list(new_unfiltered_ids)))
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filtered = _basequery.filter_to_repos_for_user(query, filter_username, repo_kind=repo_kind)
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# Sort the filtered repositories by their initial order.
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all_filtered_repos = list(filtered)
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all_filtered_repos.sort(key=lambda repo: found_ids.index(repo.id))
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# Yield the repositories in sorted order.
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for filtered_repo in all_filtered_repos:
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yield filtered_repo
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# If the number of found IDs is less than the chunk count, then we're done.
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if len(found_ids) < chunk_count:
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break
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iteration_count = iteration_count + 1
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def _get_sorted_matching_repositories(lookup_value, repo_kind='image', include_private=False,
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search_fields=None):
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""" Returns a query of repositories matching the given lookup string, with optional inclusion of
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private repositories. Note that this method does *not* filter results based on visibility
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to users.
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"""
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if search_fields is None:
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search_fields = set([SEARCH_FIELDS.description.name, SEARCH_FIELDS.name.name])
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# Always search at least on name (init clause)
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clause = Repository.name.match(lookup_value)
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computed_score = RepositorySearchScore.score.alias('score')
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# If the description field is in the search fields, then we need to compute a synthetic score
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# to discount the weight of the description more than the name.
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if SEARCH_FIELDS.description.name in search_fields:
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clause = Repository.description.match(lookup_value) | clause
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|
|
cases = [
|
|
(Repository.name.match(lookup_value), 100 * RepositorySearchScore.score),
|
|
]
|
|
|
|
computed_score = case(None, cases, RepositorySearchScore.score).alias('score')
|
|
|
|
query = (Repository
|
|
.select(Repository, Namespace, computed_score)
|
|
.join(Namespace, on=(Namespace.id == Repository.namespace_user))
|
|
.where(clause)
|
|
.group_by(Repository.id, Namespace.id))
|
|
|
|
if repo_kind is not None:
|
|
query = query.where(Repository.kind == Repository.kind.get_id(repo_kind))
|
|
|
|
if not include_private:
|
|
query = query.where(Repository.visibility == _basequery.get_public_repo_visibility())
|
|
|
|
query = (query
|
|
.switch(Repository)
|
|
.join(RepositorySearchScore)
|
|
.group_by(Repository, Namespace, RepositorySearchScore)
|
|
.order_by(SQL('score').desc()))
|
|
|
|
return query
|
|
|
|
|
|
def lookup_repository(repo_id):
|
|
try:
|
|
return Repository.get(Repository.id == repo_id)
|
|
except Repository.DoesNotExist:
|
|
return None
|
|
|
|
|
|
def is_repository_public(repository):
|
|
return repository.visibility_id == _basequery.get_public_repo_visibility().id
|
|
|
|
|
|
def repository_is_public(namespace_name, repository_name):
|
|
try:
|
|
(Repository
|
|
.select()
|
|
.join(Namespace, on=(Repository.namespace_user == Namespace.id))
|
|
.switch(Repository)
|
|
.join(Visibility)
|
|
.where(Namespace.username == namespace_name,
|
|
Repository.name == repository_name,
|
|
Visibility.name == 'public')
|
|
.get())
|
|
return True
|
|
except Repository.DoesNotExist:
|
|
return False
|
|
|
|
|
|
def set_repository_visibility(repo, visibility):
|
|
visibility_obj = Visibility.get(name=visibility)
|
|
if not visibility_obj:
|
|
return
|
|
|
|
repo.visibility = visibility_obj
|
|
repo.save()
|
|
|
|
|
|
def get_email_authorized_for_repo(namespace, repository, email):
|
|
try:
|
|
return (RepositoryAuthorizedEmail
|
|
.select(RepositoryAuthorizedEmail, Repository, Namespace)
|
|
.join(Repository)
|
|
.join(Namespace, on=(Repository.namespace_user == Namespace.id))
|
|
.where(Namespace.username == namespace,
|
|
Repository.name == repository,
|
|
RepositoryAuthorizedEmail.email == email)
|
|
.get())
|
|
except RepositoryAuthorizedEmail.DoesNotExist:
|
|
return None
|
|
|
|
|
|
def create_email_authorization_for_repo(namespace_name, repository_name, email):
|
|
try:
|
|
repo = _basequery.get_existing_repository(namespace_name, repository_name)
|
|
except Repository.DoesNotExist:
|
|
raise DataModelException('Invalid repository %s/%s' %
|
|
(namespace_name, repository_name))
|
|
|
|
return RepositoryAuthorizedEmail.create(repository=repo, email=email, confirmed=False)
|
|
|
|
|
|
def confirm_email_authorization_for_repo(code):
|
|
try:
|
|
found = (RepositoryAuthorizedEmail
|
|
.select(RepositoryAuthorizedEmail, Repository, Namespace)
|
|
.join(Repository)
|
|
.join(Namespace, on=(Repository.namespace_user == Namespace.id))
|
|
.where(RepositoryAuthorizedEmail.code == code)
|
|
.get())
|
|
except RepositoryAuthorizedEmail.DoesNotExist:
|
|
raise DataModelException('Invalid confirmation code.')
|
|
|
|
found.confirmed = True
|
|
found.save()
|
|
|
|
return found
|
|
|
|
|
|
def list_popular_public_repos(action_count_threshold, time_span, repo_kind='image'):
|
|
cutoff = datetime.now() - time_span
|
|
return (Repository
|
|
.select(Namespace.username, Repository.name)
|
|
.join(Namespace, on=(Repository.namespace_user == Namespace.id))
|
|
.switch(Repository)
|
|
.join(RepositoryActionCount)
|
|
.where(RepositoryActionCount.date >= cutoff,
|
|
Repository.visibility == get_public_repo_visibility(),
|
|
Repository.kind == Repository.kind.get_id(repo_kind))
|
|
.group_by(RepositoryActionCount.repository, Repository.name, Namespace.username)
|
|
.having(fn.Sum(RepositoryActionCount.count) >= action_count_threshold)
|
|
.tuples())
|
|
|
|
|
|
def is_empty(namespace_name, repository_name):
|
|
""" Returns if the repository referenced by the given namespace and name is empty. If the repo
|
|
doesn't exist, returns True.
|
|
"""
|
|
try:
|
|
tag.list_repository_tags(namespace_name, repository_name).limit(1).get()
|
|
return False
|
|
except RepositoryTag.DoesNotExist:
|
|
return True
|