+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: AGPL-3.0
+
require 'arvados/keep'
+require 'sweep_trashed_objects'
+require 'trashable'
class Collection < ArvadosModel
+ extend CurrentApiClient
extend DbCurrentTime
include HasUuid
include KindAndEtag
include CommonApiTemplate
+ include Trashable
serialize :properties, Hash
+ serialize :storage_classes_desired, Array
+ serialize :storage_classes_confirmed, Array
before_validation :default_empty_manifest
+ before_validation :default_storage_classes, on: :create
before_validation :check_encoding
before_validation :check_manifest_validity
before_validation :check_signatures
before_validation :strip_signatures_and_update_replication_confirmed
validate :ensure_pdh_matches_manifest_text
+ validate :ensure_storage_classes_desired_is_not_empty
+ validate :ensure_storage_classes_contain_non_empty_strings
+ validate :versioning_metadata_updates, on: :update
+ validate :past_versions_cannot_be_updated, on: :update
before_save :set_file_names
- before_save :expires_at_not_in_past
-
- # Query only undeleted collections by default.
- default_scope where("expires_at IS NULL or expires_at > statement_timestamp()")
+ before_save :set_file_count_and_total_size
+ around_update :manage_versioning
api_accessible :user, extend: :common do |t|
t.add :name
t.add :properties
t.add :portable_data_hash
t.add :signed_manifest_text, as: :manifest_text
+ t.add :manifest_text, as: :unsigned_manifest_text
t.add :replication_desired
t.add :replication_confirmed
t.add :replication_confirmed_at
- t.add :expires_at
+ t.add :storage_classes_desired
+ t.add :storage_classes_confirmed
+ t.add :storage_classes_confirmed_at
+ t.add :delete_at
+ t.add :trash_at
+ t.add :is_trashed
+ t.add :version
+ t.add :current_version_uuid
+ t.add :preserve_version
+ t.add :file_count
+ t.add :file_size_total
end
after_initialize do
# API response, and never let clients select the
# manifest_text column.
#
- # We need expires_at to determine the correct
- # timestamp in signed_manifest_text.
- 'manifest_text' => ['manifest_text', 'expires_at'],
+ # We need trash_at and is_trashed to determine the
+ # correct timestamp in signed_manifest_text.
+ 'manifest_text' => ['manifest_text', 'trash_at', 'is_trashed'],
+ 'unsigned_manifest_text' => ['manifest_text'],
)
end
super + ["updated_at", "file_names"]
end
+ def self.limit_index_columns_read
+ ["manifest_text"]
+ end
+
FILE_TOKEN = /^[[:digit:]]+:[[:digit:]]+:/
def check_signatures
return false if self.manifest_text.nil?
# Check permissions on the collection manifest.
# If any signature cannot be verified, raise PermissionDeniedError
# which will return 403 Permission denied to the client.
- api_token = current_api_client_authorization.andand.api_token
+ api_token = Thread.current[:token]
signing_opts = {
api_token: api_token,
- now: db_current_time.to_i,
+ now: @validation_timestamp.to_i,
}
self.manifest_text.each_line do |entry|
entry.split.each do |tok|
false
elsif portable_data_hash[0..31] != computed_pdh[0..31]
errors.add(:portable_data_hash,
- "does not match computed hash #{computed_pdh}")
+ "'#{portable_data_hash}' does not match computed hash '#{computed_pdh}'")
false
else
# Ignore the client-provided size part: always store
true
end
+ def set_file_count_and_total_size
+ if self.manifest_text_changed?
+ m = Keep::Manifest.new(self.manifest_text)
+ self.file_size_total = m.files_size
+ self.file_count = m.files_count
+ end
+ true
+ end
+
def manifest_files
+ return '' if !self.manifest_text
+
+ done = {}
names = ''
- if self.manifest_text
- self.manifest_text.scan(/ \d+:\d+:(\S+)/) do |name|
- names << name.first.gsub('\040',' ') + "\n"
- break if names.length > 2**12
+ self.manifest_text.scan(/ \d+:\d+:(\S+)/) do |name|
+ next if done[name]
+ done[name] = true
+ names << name.first.gsub('\040',' ') + "\n"
+ end
+ self.manifest_text.scan(/^\.\/(\S+)/m) do |stream_name|
+ next if done[stream_name]
+ done[stream_name] = true
+ names << stream_name.first.gsub('\040',' ') + "\n"
+ end
+ names
+ end
+
+ def default_empty_manifest
+ self.manifest_text ||= ''
+ end
+
+ def skip_uuid_existence_check
+ # Avoid checking the existence of current_version_uuid, as it's
+ # assigned on creation of a new 'current version' collection, so
+ # the collection's UUID only lives on memory when the validation check
+ # is performed.
+ ['current_version_uuid']
+ end
+
+ def manage_versioning
+ should_preserve_version = should_preserve_version? # Time sensitive, cache value
+ return(yield) unless (should_preserve_version || syncable_updates.any?)
+
+ # Put aside the changes because with_lock forces a record reload
+ changes = self.changes
+ snapshot = nil
+ with_lock do
+ # Copy the original state to save it as old version
+ if should_preserve_version
+ snapshot = self.dup
+ snapshot.uuid = nil # Reset UUID so it's created as a new record
+ snapshot.created_at = self.created_at
+ end
+
+ # Restore requested changes on the current version
+ changes.keys.each do |attr|
+ if attr == 'preserve_version' && changes[attr].last == false
+ next # Ignore false assignment, once true it'll be true until next version
+ end
+ self.attributes = {attr => changes[attr].last}
+ if attr == 'uuid'
+ # Also update the current version reference
+ self.attributes = {'current_version_uuid' => changes[attr].last}
+ end
+ end
+
+ if should_preserve_version
+ self.version += 1
+ self.preserve_version = false
+ end
+
+ yield
+
+ sync_past_versions if syncable_updates.any?
+ if snapshot
+ snapshot.attributes = self.syncable_updates
+ snapshot.manifest_text = snapshot.signed_manifest_text
+ snapshot.save
end
end
+ end
- if self.manifest_text and names.length < 2**12
- self.manifest_text.scan(/^\.\/(\S+)/m) do |stream_name|
- names << stream_name.first.gsub('\040',' ') + "\n"
- break if names.length > 2**12
+ def syncable_updates
+ updates = {}
+ (syncable_attrs & self.changes.keys).each do |attr|
+ if attr == 'uuid'
+ # Point old versions to current version's new UUID
+ updates['current_version_uuid'] = self.changes[attr].last
+ else
+ updates[attr] = self.changes[attr].last
end
end
+ return updates
+ end
- names[0,2**12]
+ def sync_past_versions
+ updates = self.syncable_updates
+ Collection.where('current_version_uuid = ? AND uuid != ?', self.uuid_was, self.uuid_was).each do |c|
+ c.attributes = updates
+ # Use a different validation context to skip the 'old_versions_cannot_be_updated'
+ # validator, as on this case it is legal to update some fields.
+ leave_modified_by_user_alone do
+ leave_modified_at_alone do
+ c.save(context: :update_old_versions)
+ end
+ end
+ end
end
- def default_empty_manifest
- self.manifest_text ||= ''
+ def versionable_updates?(attrs)
+ (['manifest_text', 'description', 'properties', 'name'] & attrs).any?
+ end
+
+ def syncable_attrs
+ ['uuid', 'owner_uuid', 'delete_at', 'trash_at', 'is_trashed', 'replication_desired', 'storage_classes_desired']
+ end
+
+ def should_preserve_version?
+ return false unless (Rails.configuration.collection_versioning && versionable_updates?(self.changes.keys))
+
+ idle_threshold = Rails.configuration.preserve_version_if_idle
+ if !self.preserve_version_was &&
+ (idle_threshold < 0 ||
+ (idle_threshold > 0 && self.modified_at_was > db_current_time-idle_threshold.seconds))
+ return false
+ end
+ return true
end
def check_encoding
end
def signed_manifest_text
- if has_attribute? :manifest_text
- token = current_api_client_authorization.andand.api_token
+ if !has_attribute? :manifest_text
+ return nil
+ elsif is_trashed
+ return manifest_text
+ else
+ token = Thread.current[:token]
exp = [db_current_time.to_i + Rails.configuration.blob_signature_ttl,
- expires_at].compact.map(&:to_i).min
- @signed_manifest_text = self.class.sign_manifest manifest_text, token, exp
+ trash_at].compact.map(&:to_i).min
+ self.class.sign_manifest manifest_text, token, exp
end
end
[hash_part, size_part].compact.join '+'
end
- # Return array of Collection objects
- def self.find_all_for_docker_image(search_term, search_tag=nil, readers=nil)
+ def self.get_compatible_images(readers, pattern, collections)
+ if collections.empty?
+ return []
+ end
+
+ migrations = Hash[
+ Link.where('tail_uuid in (?) AND link_class=? AND links.owner_uuid=?',
+ collections.map(&:portable_data_hash),
+ 'docker_image_migration',
+ system_user_uuid).
+ order('links.created_at asc').
+ map { |l|
+ [l.tail_uuid, l.head_uuid]
+ }]
+
+ migrated_collections = Hash[
+ Collection.readable_by(*readers).
+ where('portable_data_hash in (?)', migrations.values).
+ map { |c|
+ [c.portable_data_hash, c]
+ }]
+
+ collections.map { |c|
+ # Check if the listed image is compatible first, if not, then try the
+ # migration link.
+ manifest = Keep::Manifest.new(c.manifest_text)
+ if manifest.exact_file_count?(1) and manifest.files[0][1] =~ pattern
+ c
+ elsif m = migrated_collections[migrations[c.portable_data_hash]]
+ manifest = Keep::Manifest.new(m.manifest_text)
+ if manifest.exact_file_count?(1) and manifest.files[0][1] =~ pattern
+ m
+ end
+ end
+ }.compact
+ end
+
+ # Resolve a Docker repo+tag, hash, or collection PDH to an array of
+ # Collection objects, sorted by timestamp starting with the most recent
+ # match.
+ #
+ # If filter_compatible_format is true (the default), only return image
+ # collections which are support by the installation as indicated by
+ # Rails.configuration.docker_image_formats. Will follow
+ # 'docker_image_migration' links if search_term resolves to an incompatible
+ # image, but an equivalent compatible image is available.
+ def self.find_all_for_docker_image(search_term, search_tag=nil, readers=nil, filter_compatible_format: true)
readers ||= [Thread.current[:user]]
base_search = Link.
readable_by(*readers).
joins("JOIN collections ON links.head_uuid = collections.uuid").
order("links.created_at DESC")
+ if (Rails.configuration.docker_image_formats.include? 'v1' and
+ Rails.configuration.docker_image_formats.include? 'v2') or filter_compatible_format == false
+ pattern = /^(sha256:)?[0-9A-Fa-f]{64}\.tar$/
+ elsif Rails.configuration.docker_image_formats.include? 'v2'
+ pattern = /^(sha256:)[0-9A-Fa-f]{64}\.tar$/
+ elsif Rails.configuration.docker_image_formats.include? 'v1'
+ pattern = /^[0-9A-Fa-f]{64}\.tar$/
+ else
+ raise "Unrecognized configuration for docker_image_formats #{Rails.configuration.docker_image_formats}"
+ end
+
# If the search term is a Collection locator that contains one file
# that looks like a Docker image, return it.
if loc = Keep::Locator.parse(search_term)
loc.strip_hints!
- coll_match = readable_by(*readers).where(portable_data_hash: loc.to_s).limit(1).first
- if coll_match
- # Check if the Collection contains exactly one file whose name
- # looks like a saved Docker image.
- manifest = Keep::Manifest.new(coll_match.manifest_text)
- if manifest.exact_file_count?(1) and
- (manifest.files[0][1] =~ /^(sha256:)?[0-9A-Fa-f]{64}\.tar$/)
- return [coll_match]
- end
+ coll_match = readable_by(*readers).where(portable_data_hash: loc.to_s).limit(1)
+ if coll_match.any? or Rails.configuration.remote_hosts.length == 0
+ return get_compatible_images(readers, pattern, coll_match)
+ else
+ # Allow bare pdh that doesn't exist in the local database so
+ # that federated container requests which refer to remotely
+ # stored containers will validate.
+ return [Collection.new(portable_data_hash: loc.to_s)]
end
end
# so that anything with an image timestamp is considered more recent than
# anything without; then we use the link's created_at as a tiebreaker.
uuid_timestamps = {}
- matches.all.map do |link|
+ matches.each do |link|
uuid_timestamps[link.head_uuid] = [(-link.properties["image_timestamp"].to_datetime.to_i rescue 0),
-link.created_at.to_i]
+ end
+
+ sorted = Collection.where('uuid in (?)', uuid_timestamps.keys).sort_by { |c|
+ uuid_timestamps[c.uuid]
+ }
+ compatible = get_compatible_images(readers, pattern, sorted)
+ if sorted.length > 0 and compatible.empty?
+ raise ArvadosModel::UnresolvableContainerError.new "Matching Docker image is incompatible with 'docker_image_formats' configuration."
end
- Collection.where('uuid in (?)', uuid_timestamps.keys).sort_by { |c| uuid_timestamps[c.uuid] }
+ compatible
end
def self.for_latest_docker_image(search_term, search_tag=nil, readers=nil)
end
def self.full_text_searchable_columns
- super - ["manifest_text"]
+ super - ["manifest_text", "storage_classes_desired", "storage_classes_confirmed", "current_version_uuid"]
+ end
+
+ def self.where *args
+ SweepTrashedObjects.sweep_if_stale
+ super
end
protected
+
+ # Although the defaults for these columns is already set up on the schema,
+ # collection creation from an API client seems to ignore them, making the
+ # validation on empty desired storage classes return an error.
+ def default_storage_classes
+ if self.storage_classes_desired.nil? || self.storage_classes_desired.empty?
+ self.storage_classes_desired = ["default"]
+ end
+ self.storage_classes_confirmed ||= []
+ end
+
def portable_manifest_text
self.class.munge_manifest_locators(manifest_text) do |match|
if match[2] # size
end
def ensure_permission_to_save
- if (not current_user.andand.is_admin and
- (replication_confirmed_at_changed? or replication_confirmed_changed?) and
- not (replication_confirmed_at.nil? and replication_confirmed.nil?))
- raise ArvadosModel::PermissionDeniedError.new("replication_confirmed and replication_confirmed_at attributes cannot be changed, except by setting both to nil")
+ if (not current_user.andand.is_admin)
+ if (replication_confirmed_at_changed? or replication_confirmed_changed?) and
+ not (replication_confirmed_at.nil? and replication_confirmed.nil?)
+ raise ArvadosModel::PermissionDeniedError.new("replication_confirmed and replication_confirmed_at attributes cannot be changed, except by setting both to nil")
+ end
+ if (storage_classes_confirmed_changed? or storage_classes_confirmed_at_changed?) and
+ not (storage_classes_confirmed == [] and storage_classes_confirmed_at.nil?)
+ raise ArvadosModel::PermissionDeniedError.new("storage_classes_confirmed and storage_classes_confirmed_at attributes cannot be changed, except by setting them to [] and nil respectively")
+ end
end
super
end
- # If expires_at is being changed to a time in the past, change it to
- # now. This allows clients to say "expires {client-current-time}"
- # without failing due to clock skew, while avoiding odd log entries
- # like "expiry date changed to {1 year ago}".
- def expires_at_not_in_past
- if expires_at_changed? and expires_at
- self.expires_at = [db_current_time, expires_at].max
+ def ensure_storage_classes_desired_is_not_empty
+ if self.storage_classes_desired.empty?
+ raise ArvadosModel::InvalidStateTransitionError.new("storage_classes_desired shouldn't be empty")
+ end
+ end
+
+ def ensure_storage_classes_contain_non_empty_strings
+ (self.storage_classes_desired + self.storage_classes_confirmed).each do |c|
+ if !c.is_a?(String) || c == ''
+ raise ArvadosModel::InvalidStateTransitionError.new("storage classes should only be non-empty strings")
+ end
+ end
+ end
+
+ def past_versions_cannot_be_updated
+ # We check for the '_was' values just in case the update operation
+ # includes a change on current_version_uuid or uuid.
+ if current_version_uuid_was != uuid_was
+ errors.add(:base, "past versions cannot be updated")
+ false
+ end
+ end
+
+ def versioning_metadata_updates
+ valid = true
+ if (current_version_uuid_was == uuid_was) && current_version_uuid_changed?
+ errors.add(:current_version_uuid, "cannot be updated")
+ valid = false
end
+ if version_changed?
+ errors.add(:version, "cannot be updated")
+ valid = false
+ end
+ valid
+ end
+
+ def assign_uuid
+ super
+ self.current_version_uuid ||= self.uuid
+ true
end
end
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