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 Container.create!(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)
98 self.container_uuid = c.uuid
101 # Return a runtime_constraints hash that complies with
102 # self.runtime_constraints but is suitable for saving in a container
103 # record, i.e., has specific values instead of ranges.
105 # Doing this as a step separate from other resolutions, like "git
106 # revision range to commit hash", makes sense only when there is no
107 # opportunity to reuse an existing container (e.g., container reuse
108 # is not implemented yet, or we have already found that no existing
109 # containers are suitable).
110 def runtime_constraints_for_container
112 runtime_constraints.each do |k, v|
122 # Return a mounts hash suitable for a Container, i.e., with every
123 # readonly collection UUID resolved to a PDH.
124 def mounts_for_container
126 mounts.each do |k, mount|
129 if mount['kind'] != 'collection'
132 if (uuid = mount.delete 'uuid')
134 readable_by(current_user).
136 select(:portable_data_hash).
139 raise ArvadosModel::UnresolvableContainerError.new "cannot mount collection #{uuid.inspect}: not found"
141 if mount['portable_data_hash'].nil?
142 # PDH not supplied by client
143 mount['portable_data_hash'] = c.portable_data_hash
144 elsif mount['portable_data_hash'] != c.portable_data_hash
145 # UUID and PDH supplied by client, but they don't agree
146 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"
153 # Return a container_image PDH suitable for a Container.
154 def container_image_for_container
155 coll = Collection.for_latest_docker_image(container_image)
157 raise ArvadosModel::UnresolvableContainerError.new "docker image #{container_image.inspect} not found"
159 return coll.portable_data_hash
163 if (container_uuid_changed? and
164 not current_user.andand.is_admin and
165 not container_uuid.nil?)
166 errors.add :container_uuid, "can only be updated to nil."
169 if state_changed? and state == Committed and container_uuid.nil?
174 def validate_runtime_constraints
177 ['vcpus', 'ram'].each do |k|
178 if not (runtime_constraints.include? k and
179 runtime_constraints[k].is_a? Integer and
180 runtime_constraints[k] > 0)
181 errors.add :runtime_constraints, "#{k} must be a positive integer"
188 permitted = [:owner_uuid]
192 # Permit updating most fields
193 permitted.push :command, :container_count_max,
194 :container_image, :cwd, :description, :environment,
195 :filters, :mounts, :name, :output_path, :priority,
196 :properties, :requesting_container_uuid, :runtime_constraints,
197 :state, :container_uuid
200 if container_uuid.nil?
201 errors.add :container_uuid, "has not been resolved to a container."
205 errors.add :priority, "cannot be nil"
208 # Can update priority, container count, name and description
209 permitted.push :priority, :container_count_max, :container_uuid, :name, :description
211 if self.state_changed?
212 # Allow create-and-commit in a single operation.
213 permitted.push :command, :container_image, :cwd, :description, :environment,
214 :filters, :mounts, :name, :output_path, :properties,
215 :requesting_container_uuid, :runtime_constraints,
216 :state, :container_uuid
220 if not current_user.andand.is_admin and not (self.name_changed? || self.description_changed?)
221 errors.add :state, "of container request can only be set to Final by system."
224 if self.state_changed? || self.name_changed? || self.description_changed?
225 permitted.push :state, :name, :description
227 errors.add :state, "does not allow updates"
231 errors.add :state, "invalid value"
234 check_update_whitelist permitted
238 if self.state_changed? or
239 self.priority_changed? or
240 self.container_uuid_changed?
241 act_as_system_user do
244 [self.container_uuid_was, self.container_uuid].compact).
245 map(&:update_priority!)
250 def set_requesting_container_uuid
251 return true if self.requesting_container_uuid # already set
253 token_uuid = current_api_client_authorization.andand.uuid
254 container = Container.where('auth_uuid=?', token_uuid).order('created_at desc').first
255 self.requesting_container_uuid = container.uuid if container