+require 'whitelist_update'
+
class Container < ArvadosModel
+ include HasUuid
+ include KindAndEtag
+ include CommonApiTemplate
+ include WhitelistUpdate
+
+ serialize :environment, Hash
+ serialize :mounts, Hash
+ serialize :runtime_constraints, Hash
+ serialize :command, Array
+
+ before_validation :fill_field_defaults, :if => :new_record?
+ before_validation :set_timestamps
+ validates :command, :container_image, :output_path, :cwd, :presence => true
+ validate :validate_change
+ after_save :request_finalize
+ after_save :process_tree_priority
+
+ has_many :container_requests, :foreign_key => :container_uuid, :class_name => 'ContainerRequest', :primary_key => :uuid
api_accessible :user, extend: :common do |t|
t.add :command
t.add :runtime_constraints
t.add :started_at
t.add :state
- t.add :uuid
end
- serialize :properties, Hash
- serialize :environment, Hash
- serialize :mounts, Hash
- serialize :runtime_constraints, Hash
- serialize :command, Array
+ # Supported states for a container
+ States =
+ [
+ (Queued = 'Queued'),
+ (Running = 'Running'),
+ (Complete = 'Complete'),
+ (Cancelled = 'Cancelled')
+ ]
+
+ def self.resolve req
+ Container.create!({ :command => req.command,
+ :container_image => req.container_image,
+ :cwd => req.cwd,
+ :environment => req.environment,
+ :mounts => req.mounts,
+ :output_path => req.output_path,
+ :runtime_constraints => req.runtime_constraints })
+ end
+
+ def update_priority!
+ max = 0
+ ContainerRequest.where(container_uuid: uuid).each do |cr|
+ if cr.priority > max
+ max = cr.priority
+ end
+ end
+ self.priority = max
+ self.save!
+ end
+
+ protected
+
+ def fill_field_defaults
+ self.state ||= Queued
+ self.environment ||= {}
+ self.runtime_constraints ||= {}
+ self.mounts ||= {}
+ self.cwd ||= "."
+ self.priority ||= 1
+ end
+
+ def permission_to_create
+ current_user.andand.is_admin
+ end
+
+ def permission_to_update
+ current_user.andand.is_admin
+ end
+
+ def set_timestamps
+ if self.state_changed? and self.state == Running
+ self.started_at ||= db_current_time
+ end
+
+ if self.state_changed? and [Complete, Cancelled].include? self.state
+ self.finished_at ||= db_current_time
+ end
+ end
+
+ def validate_change
+ permitted = []
+
+ if self.new_record?
+ permitted.push :owner_uuid, :command, :container_image, :cwd, :environment,
+ :mounts, :output_path, :priority, :runtime_constraints, :state
+ end
+
+ case self.state
+ when Queued
+ # permit priority change only.
+ permitted.push :priority
+
+ if self.state_changed? and not self.state_was.nil?
+ errors.add :state, "Can only go to Queued from nil"
+ end
+
+ when Running
+ if self.state_changed?
+ # At point of state change, can only set state and started_at
+ if self.state_was == Queued
+ permitted.push :state, :started_at
+ else
+ errors.add :state, "Can only go from Queued to Running"
+ end
+ else
+ # While running, can update priority and progress.
+ permitted.push :priority, :progress
+ end
+
+ when Complete
+ if self.state_changed?
+ if self.state_was == Running
+ permitted.push :state, :finished_at, :output, :log
+ else
+ errors.add :state, "Cannot go from #{self.state_was} to #{self.state}"
+ end
+ else
+ errors.add :state, "Cannot update record in Complete state"
+ end
+
+ when Cancelled
+ if self.state_changed?
+ if self.state_was == Running
+ permitted.push :state, :finished_at, :output, :log
+ elsif self.state_was == Queued
+ permitted.push :state, :finished_at
+ else
+ errors.add :state, "Cannot go from #{self.state_was} to #{self.state}"
+ end
+ else
+ errors.add :state, "Cannot update record in Cancelled state"
+ end
+
+ else
+ errors.add :state, "Invalid state #{self.state}"
+ end
+
+ check_update_whitelist permitted
+ end
+
+ def request_finalize
+ if self.state_changed? and [Complete, Cancelled].include? self.state
+ act_as_system_user do
+ ContainerRequest.where(container_uuid: uuid).each do |cr|
+ cr.state = ContainerRequest.Final
+ cr.save!
+ end
+ end
+ end
+ end
+
+ def process_tree_priority
+ if self.priority_changed?
+ if self.priority == 0
+ act_as_system_user do
+ ContainerRequest.where(requesting_container_uuid: uuid).each do |cr|
+ cr.priority = self.priority
+ cr.save!
+ end
+ end
+ end
+ end
+ end
- has_many :container_requests, :foreign_key => :container_uuid, :class_name => 'ContainerRequest', :primary_key => :uuid
end
projects / arvados.git / blobdiff