Merge branch '11088-keep-cache-units'

[arvados.git] / services / api / app / models / pipeline_instance.rb

diff --git a/services/api/app/models/pipeline_instance.rb b/services/api/app/models/pipeline_instance.rb
index 77a0736b000d669d298abc93ad95d12417e8a3d1..75903ca7d05551d0b5486ed33c1e0c4ee9225cb3 100644 (file)
--- a/services/api/app/models/pipeline_instance.rb
+++ b/services/api/app/models/pipeline_instance.rb
@@ -10,6 +10,7 @@ class PipelineInstance < ArvadosModel
   before_validation :bootstrap_components
   before_validation :update_state
   before_validation :verify_status
+  before_validation :update_timestamps_when_state_changes
   before_create :set_state_before_save
   before_save :set_state_before_save
 
@@ -99,6 +100,33 @@ class PipelineInstance < ArvadosModel
     self.where("state = 'RunningOnServer'")
   end
 
+  def cancel(cascade: false, need_transaction: true)
+    if need_transaction
+      ActiveRecord::Base.transaction do
+        cancel(cascade: cascade, need_transaction: false)
+      end
+      return
+    end
+
+    if self.state.in?([RunningOnServer, RunningOnClient])
+      self.state = Paused
+      self.save!
+    elsif self.state != Paused
+      raise InvalidStateTransitionError
+    end
+
+    return if !cascade
+
+    # cancel all child jobs
+    children = self.components.andand.collect{|_, c| c['job']}.compact.collect{|j| j['uuid']}.compact
+
+    return if children.empty?
+
+    Job.where(uuid: children, state: [Job::Queued, Job::Running]).each do |job|
+      job.cancel(cascade: cascade, need_transaction: false)
+    end
+  end
+
   protected
   def bootstrap_components
     if pipeline_template and (!components or components.empty?)
@@ -136,4 +164,17 @@ class PipelineInstance < ArvadosModel
     end
   end
 
+  def update_timestamps_when_state_changes
+    return if not (state_changed? or new_record?)
+
+    case state
+    when RunningOnServer, RunningOnClient
+      self.started_at ||= db_current_time
+    when Failed, Complete
+      current_time = db_current_time
+      self.started_at ||= current_time
+      self.finished_at ||= current_time
+    end
+  end
+
 end