X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/a95f899d7ac84f29b3d019aa410d265bb40833e5..9f35a3cf10e5d261d83556d5b33f242966101f02:/services/api/app/models/container_request.rb

diff --git a/services/api/app/models/container_request.rb b/services/api/app/models/container_request.rb
index 6353132e90..a588c86451 100644
--- a/services/api/app/models/container_request.rb
+++ b/services/api/app/models/container_request.rb
@@ -17,10 +17,13 @@ class ContainerRequest < ArvadosModel
   validates :command, :container_image, :output_path, :cwd, :presence => true
   validate :validate_state_change
   validate :validate_change
+  validate :validate_runtime_constraints
   after_save :update_priority
+  before_create :set_requesting_container_uuid
 
   api_accessible :user, extend: :common do |t|
     t.add :command
+    t.add :container_count
     t.add :container_count_max
     t.add :container_image
     t.add :container_uuid
@@ -62,10 +65,24 @@ class ContainerRequest < ArvadosModel
     %w(modified_by_client_uuid container_uuid requesting_container_uuid)
   end
 
+  # Finalize the container request after the container has
+  # finished/cancelled.
   def container_completed!
-    # may implement retry logic here in the future.
-    self.state = ContainerRequest::Final
-    self.save!
+    update_attributes!(state: ContainerRequest::Final)
+    c = Container.find_by_uuid(container_uuid)
+    ['output', 'log'].each do |out_type|
+      pdh = c.send(out_type)
+      next if pdh.nil?
+      manifest = Collection.where(portable_data_hash: pdh).first.manifest_text
+      Collection.create!(owner_uuid: owner_uuid,
+                         manifest_text: manifest,
+                         portable_data_hash: pdh,
+                         name: "Container #{out_type} for request #{uuid}",
+                         properties: {
+                           'type' => out_type,
+                           'container_request' => uuid,
+                         })
+    end
   end
 
   protected
@@ -76,25 +93,94 @@ class ContainerRequest < ArvadosModel
     self.runtime_constraints ||= {}
     self.mounts ||= {}
     self.cwd ||= "."
+    self.container_count_max ||= Rails.configuration.container_count_max
   end
 
   # Create a new container (or find an existing one) to satisfy this
   # request.
   def resolve
-    # TODO: resolve symbolic git and keep references to content
-    # addresses.
+    c_mounts = mounts_for_container
+    c_runtime_constraints = runtime_constraints_for_container
+    c_container_image = container_image_for_container
     c = act_as_system_user do
-      Container.create!(command: self.command,
-                        container_image: self.container_image,
-                        cwd: self.cwd,
-                        environment: self.environment,
-                        mounts: self.mounts,
-                        output_path: self.output_path,
-                        runtime_constraints: self.runtime_constraints)
+      c_attrs = {command: self.command,
+                 cwd: self.cwd,
+                 environment: self.environment,
+                 output_path: self.output_path,
+                 container_image: c_container_image,
+                 mounts: c_mounts,
+                 runtime_constraints: c_runtime_constraints}
+      reusable = Container.find_reusable(c_attrs)
+      if not reusable.nil?
+        reusable
+      else
+        Container.create!(c_attrs)
+      end
     end
     self.container_uuid = c.uuid
   end
 
+  # Return a runtime_constraints hash that complies with
+  # self.runtime_constraints but is suitable for saving in a container
+  # record, i.e., has specific values instead of ranges.
+  #
+  # Doing this as a step separate from other resolutions, like "git
+  # revision range to commit hash", makes sense only when there is no
+  # opportunity to reuse an existing container (e.g., container reuse
+  # is not implemented yet, or we have already found that no existing
+  # containers are suitable).
+  def runtime_constraints_for_container
+    rc = {}
+    runtime_constraints.each do |k, v|
+      if v.is_a? Array
+        rc[k] = v[0]
+      else
+        rc[k] = v
+      end
+    end
+    rc
+  end
+
+  # Return a mounts hash suitable for a Container, i.e., with every
+  # readonly collection UUID resolved to a PDH.
+  def mounts_for_container
+    c_mounts = {}
+    mounts.each do |k, mount|
+      mount = mount.dup
+      c_mounts[k] = mount
+      if mount['kind'] != 'collection'
+        next
+      end
+      if (uuid = mount.delete 'uuid')
+        c = Collection.
+          readable_by(current_user).
+          where(uuid: uuid).
+          select(:portable_data_hash).
+          first
+        if !c
+          raise ArvadosModel::UnresolvableContainerError.new "cannot mount collection #{uuid.inspect}: not found"
+        end
+        if mount['portable_data_hash'].nil?
+          # PDH not supplied by client
+          mount['portable_data_hash'] = c.portable_data_hash
+        elsif mount['portable_data_hash'] != c.portable_data_hash
+          # UUID and PDH supplied by client, but they don't agree
+          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"
+        end
+      end
+    end
+    return c_mounts
+  end
+
+  # Return a container_image PDH suitable for a Container.
+  def container_image_for_container
+    coll = Collection.for_latest_docker_image(container_image)
+    if !coll
+      raise ArvadosModel::UnresolvableContainerError.new "docker image #{container_image.inspect} not found"
+    end
+    return coll.portable_data_hash
+  end
+
   def set_container
     if (container_uuid_changed? and
         not current_user.andand.is_admin and
@@ -105,6 +191,27 @@ class ContainerRequest < ArvadosModel
     if state_changed? and state == Committed and container_uuid.nil?
       resolve
     end
+    if self.container_uuid != self.container_uuid_was
+      if self.container_count_changed?
+        errors.add :container_count, "cannot be updated directly."
+        return false
+      else
+        self.container_count += 1
+      end
+    end
+  end
+
+  def validate_runtime_constraints
+    case self.state
+    when Committed
+      ['vcpus', 'ram'].each do |k|
+        if not (runtime_constraints.include? k and
+                runtime_constraints[k].is_a? Integer and
+                runtime_constraints[k] > 0)
+          errors.add :runtime_constraints, "#{k} must be a positive integer"
+        end
+      end
+    end
   end
 
   def validate_change
@@ -128,8 +235,8 @@ class ContainerRequest < ArvadosModel
         errors.add :priority, "cannot be nil"
       end
 
-      # Can update priority, container count.
-      permitted.push :priority, :container_count_max, :container_uuid
+      # Can update priority, container count, name and description
+      permitted.push :priority, :container_count, :container_count_max, :container_uuid, :name, :description
 
       if self.state_changed?
         # Allow create-and-commit in a single operation.
@@ -140,12 +247,12 @@ class ContainerRequest < ArvadosModel
       end
 
     when Final
-      if not current_user.andand.is_admin
+      if not current_user.andand.is_admin and not (self.name_changed? || self.description_changed?)
         errors.add :state, "of container request can only be set to Final by system."
       end
 
-      if self.state_changed?
-          permitted.push :state
+      if self.state_changed? || self.name_changed? || self.description_changed?
+          permitted.push :state, :name, :description
       else
         errors.add :state, "does not allow updates"
       end
@@ -170,4 +277,12 @@ class ContainerRequest < ArvadosModel
     end
   end
 
+  def set_requesting_container_uuid
+    return !new_record? if self.requesting_container_uuid   # already set
+
+    token_uuid = current_api_client_authorization.andand.uuid
+    container = Container.where('auth_uuid=?', token_uuid).order('created_at desc').first
+    self.requesting_container_uuid = container.uuid if container
+    true
+  end
 end