1 require 'whitelist_update'
3 class ContainerRequest < ArvadosModel
6 include CommonApiTemplate
7 include WhitelistUpdate
9 serialize :properties, Hash
10 serialize :environment, Hash
11 serialize :mounts, Hash
12 serialize :runtime_constraints, Hash
13 serialize :command, Array
15 before_validation :fill_field_defaults, :if => :new_record?
16 before_validation :set_container
17 validates :command, :container_image, :output_path, :cwd, :presence => true
18 validate :validate_state_change
19 validate :validate_change
20 validate :validate_runtime_constraints
21 after_save :update_priority
22 before_create :set_requesting_container_uuid
24 api_accessible :user, extend: :common do |t|
26 t.add :container_count
27 t.add :container_count_max
28 t.add :container_image
40 t.add :requesting_container_uuid
41 t.add :runtime_constraints
45 # Supported states for a container request
48 (Uncommitted = 'Uncommitted'),
49 (Committed = 'Committed'),
54 nil => [Uncommitted, Committed],
55 Uncommitted => [Committed],
63 def skip_uuid_read_permission_check
64 # XXX temporary until permissions are sorted out.
65 %w(modified_by_client_uuid container_uuid requesting_container_uuid)
68 def container_completed!
69 # may implement retry logic here in the future.
70 self.state = ContainerRequest::Final
76 def fill_field_defaults
77 self.state ||= Uncommitted
78 self.environment ||= {}
79 self.runtime_constraints ||= {}
82 self.container_count_max ||= Rails.configuration.container_count_max
85 # Create a new container (or find an existing one) to satisfy this
88 c_mounts = mounts_for_container
89 c_runtime_constraints = runtime_constraints_for_container
90 c_container_image = container_image_for_container
91 c = act_as_system_user do
92 c_attrs = {command: self.command,
94 environment: self.environment,
95 output_path: self.output_path,
96 container_image: c_container_image,
98 runtime_constraints: c_runtime_constraints}
99 reusable = Container.find_reusable(c_attrs)
103 Container.create!(c_attrs)
106 self.container_uuid = c.uuid
109 # Return a runtime_constraints hash that complies with
110 # self.runtime_constraints but is suitable for saving in a container
111 # record, i.e., has specific values instead of ranges.
113 # Doing this as a step separate from other resolutions, like "git
114 # revision range to commit hash", makes sense only when there is no
115 # opportunity to reuse an existing container (e.g., container reuse
116 # is not implemented yet, or we have already found that no existing
117 # containers are suitable).
118 def runtime_constraints_for_container
120 runtime_constraints.each do |k, v|
130 # Return a mounts hash suitable for a Container, i.e., with every
131 # readonly collection UUID resolved to a PDH.
132 def mounts_for_container
134 mounts.each do |k, mount|
137 if mount['kind'] != 'collection'
140 if (uuid = mount.delete 'uuid')
142 readable_by(current_user).
144 select(:portable_data_hash).
147 raise ArvadosModel::UnresolvableContainerError.new "cannot mount collection #{uuid.inspect}: not found"
149 if mount['portable_data_hash'].nil?
150 # PDH not supplied by client
151 mount['portable_data_hash'] = c.portable_data_hash
152 elsif mount['portable_data_hash'] != c.portable_data_hash
153 # UUID and PDH supplied by client, but they don't agree
154 raise ArgumentError.new "cannot mount collection #{uuid.inspect}: current portable_data_hash #{c.portable_data_hash.inspect} does not match #{c['portable_data_hash'].inspect} in request"
161 # Return a container_image PDH suitable for a Container.
162 def container_image_for_container
163 coll = Collection.for_latest_docker_image(container_image)
165 raise ArvadosModel::UnresolvableContainerError.new "docker image #{container_image.inspect} not found"
167 return coll.portable_data_hash
171 if (container_uuid_changed? and
172 not current_user.andand.is_admin and
173 not container_uuid.nil?)
174 errors.add :container_uuid, "can only be updated to nil."
177 if state_changed? and state == Committed and container_uuid.nil?
180 if self.container_uuid != self.container_uuid_was
181 if self.container_count_changed?
182 errors.add :container_count, "cannot be updated directly."
185 self.container_count += 1
190 def validate_runtime_constraints
193 ['vcpus', 'ram'].each do |k|
194 if not (runtime_constraints.include? k and
195 runtime_constraints[k].is_a? Integer and
196 runtime_constraints[k] > 0)
197 errors.add :runtime_constraints, "#{k} must be a positive integer"
204 permitted = [:owner_uuid]
208 # Permit updating most fields
209 permitted.push :command, :container_count_max,
210 :container_image, :cwd, :description, :environment,
211 :filters, :mounts, :name, :output_path, :priority,
212 :properties, :requesting_container_uuid, :runtime_constraints,
213 :state, :container_uuid
216 if container_uuid.nil?
217 errors.add :container_uuid, "has not been resolved to a container."
221 errors.add :priority, "cannot be nil"
224 # Can update priority, container count, name and description
225 permitted.push :priority, :container_count, :container_count_max, :container_uuid, :name, :description
227 if self.state_changed?
228 # Allow create-and-commit in a single operation.
229 permitted.push :command, :container_image, :cwd, :description, :environment,
230 :filters, :mounts, :name, :output_path, :properties,
231 :requesting_container_uuid, :runtime_constraints,
232 :state, :container_uuid
236 if not current_user.andand.is_admin and not (self.name_changed? || self.description_changed?)
237 errors.add :state, "of container request can only be set to Final by system."
240 if self.state_changed? || self.name_changed? || self.description_changed?
241 permitted.push :state, :name, :description
243 errors.add :state, "does not allow updates"
247 errors.add :state, "invalid value"
250 check_update_whitelist permitted
254 if self.state_changed? or
255 self.priority_changed? or
256 self.container_uuid_changed?
257 act_as_system_user do
260 [self.container_uuid_was, self.container_uuid].compact).
261 map(&:update_priority!)
266 def set_requesting_container_uuid
267 return !new_record? if self.requesting_container_uuid # already set
269 token_uuid = current_api_client_authorization.andand.uuid
270 container = Container.where('auth_uuid=?', token_uuid).order('created_at desc').first
271 self.requesting_container_uuid = container.uuid if container