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_max
27 t.add :container_image
39 t.add :requesting_container_uuid
40 t.add :runtime_constraints
44 # Supported states for a container request
47 (Uncommitted = 'Uncommitted'),
48 (Committed = 'Committed'),
53 nil => [Uncommitted, Committed],
54 Uncommitted => [Committed],
62 def skip_uuid_read_permission_check
63 # XXX temporary until permissions are sorted out.
64 %w(modified_by_client_uuid container_uuid requesting_container_uuid)
67 def container_completed!
68 # may implement retry logic here in the future.
69 self.state = ContainerRequest::Final
75 def fill_field_defaults
76 self.state ||= Uncommitted
77 self.environment ||= {}
78 self.runtime_constraints ||= {}
83 # Create a new container (or find an existing one) to satisfy this
86 c_mounts = mounts_for_container
87 c_runtime_constraints = runtime_constraints_for_container
88 c_container_image = container_image_for_container
89 c = act_as_system_user do
90 c_attrs = {command: self.command,
92 environment: self.environment,
93 output_path: self.output_path,
94 container_image: c_container_image,
96 runtime_constraints: c_runtime_constraints}
97 reusable = Container.find_reusable(c_attrs)
101 Container.create!(c_attrs)
104 self.container_uuid = c.uuid
107 # Return a runtime_constraints hash that complies with
108 # self.runtime_constraints but is suitable for saving in a container
109 # record, i.e., has specific values instead of ranges.
111 # Doing this as a step separate from other resolutions, like "git
112 # revision range to commit hash", makes sense only when there is no
113 # opportunity to reuse an existing container (e.g., container reuse
114 # is not implemented yet, or we have already found that no existing
115 # containers are suitable).
116 def runtime_constraints_for_container
118 runtime_constraints.each do |k, v|
128 # Return a mounts hash suitable for a Container, i.e., with every
129 # readonly collection UUID resolved to a PDH.
130 def mounts_for_container
132 mounts.each do |k, mount|
135 if mount['kind'] != 'collection'
138 if (uuid = mount.delete 'uuid')
140 readable_by(current_user).
142 select(:portable_data_hash).
145 raise ArvadosModel::UnresolvableContainerError.new "cannot mount collection #{uuid.inspect}: not found"
147 if mount['portable_data_hash'].nil?
148 # PDH not supplied by client
149 mount['portable_data_hash'] = c.portable_data_hash
150 elsif mount['portable_data_hash'] != c.portable_data_hash
151 # UUID and PDH supplied by client, but they don't agree
152 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"
159 # Return a container_image PDH suitable for a Container.
160 def container_image_for_container
161 coll = Collection.for_latest_docker_image(container_image)
163 raise ArvadosModel::UnresolvableContainerError.new "docker image #{container_image.inspect} not found"
165 return coll.portable_data_hash
169 if (container_uuid_changed? and
170 not current_user.andand.is_admin and
171 not container_uuid.nil?)
172 errors.add :container_uuid, "can only be updated to nil."
175 if state_changed? and state == Committed and container_uuid.nil?
180 def validate_runtime_constraints
183 ['vcpus', 'ram'].each do |k|
184 if not (runtime_constraints.include? k and
185 runtime_constraints[k].is_a? Integer and
186 runtime_constraints[k] > 0)
187 errors.add :runtime_constraints, "#{k} must be a positive integer"
194 permitted = [:owner_uuid]
198 # Permit updating most fields
199 permitted.push :command, :container_count_max,
200 :container_image, :cwd, :description, :environment,
201 :filters, :mounts, :name, :output_path, :priority,
202 :properties, :requesting_container_uuid, :runtime_constraints,
203 :state, :container_uuid
206 if container_uuid.nil?
207 errors.add :container_uuid, "has not been resolved to a container."
211 errors.add :priority, "cannot be nil"
214 # Can update priority, container count, name and description
215 permitted.push :priority, :container_count_max, :container_uuid, :name, :description
217 if self.state_changed?
218 # Allow create-and-commit in a single operation.
219 permitted.push :command, :container_image, :cwd, :description, :environment,
220 :filters, :mounts, :name, :output_path, :properties,
221 :requesting_container_uuid, :runtime_constraints,
222 :state, :container_uuid
226 if not current_user.andand.is_admin and not (self.name_changed? || self.description_changed?)
227 errors.add :state, "of container request can only be set to Final by system."
230 if self.state_changed? || self.name_changed? || self.description_changed?
231 permitted.push :state, :name, :description
233 errors.add :state, "does not allow updates"
237 errors.add :state, "invalid value"
240 check_update_whitelist permitted
244 if self.state_changed? or
245 self.priority_changed? or
246 self.container_uuid_changed?
247 act_as_system_user do
250 [self.container_uuid_was, self.container_uuid].compact).
251 map(&:update_priority!)
256 def set_requesting_container_uuid
257 return !new_record? if self.requesting_container_uuid # already set
259 token_uuid = current_api_client_authorization.andand.uuid
260 container = Container.where('auth_uuid=?', token_uuid).order('created_at desc').first
261 self.requesting_container_uuid = container.uuid if container