Allow users to cancel a running crunch job by updating cancelled_at

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

diff --git a/services/api/app/models/job.rb b/services/api/app/models/job.rb
index 0fa80214f75089507774cf6af372d7256e356ca9..3ef52164d203ddf732a04560e051cf65fc49a7e5 100644 (file)
--- a/services/api/app/models/job.rb
+++ b/services/api/app/models/job.rb
@@ -3,18 +3,19 @@ class Job < ArvadosModel
   include KindAndEtag
   include CommonApiTemplate
   serialize :script_parameters, Hash
-  serialize :resource_limits, Hash
+  serialize :runtime_constraints, Hash
   serialize :tasks_summary, Hash
   before_create :ensure_unique_submit_id
   before_create :ensure_script_version_is_commit
   before_update :ensure_script_version_is_commit
+  after_commit :trigger_crunch_dispatch_if_cancelled, :on => :update
 
   has_many :commit_ancestors, :foreign_key => :descendant, :primary_key => :script_version
 
   class SubmitIdReused < StandardError
   end
 
-  api_accessible :superuser, :extend => :common do |t|
+  api_accessible :user, extend: :common do |t|
     t.add :submit_id
     t.add :priority
     t.add :script
@@ -30,9 +31,10 @@ class Job < ArvadosModel
     t.add :running
     t.add :is_locked_by_uuid
     t.add :log
-    t.add :resource_limits
+    t.add :runtime_constraints
     t.add :tasks_summary
     t.add :dependencies
+    t.add :log_stream_href
   end
 
   def assert_finished
@@ -41,6 +43,12 @@ class Job < ArvadosModel
                       running: false)
   end
 
+  def log_stream_href
+    unless self.finished_at
+      "#{current_api_base}/#{self.class.to_s.pluralize.underscore}/#{self.uuid}/log_tail_follow"
+    end
+  end
+
   def self.queue
     self.where('started_at is ? and is_locked_by_uuid is ? and cancelled_at is ?',
                nil, nil, nil).
@@ -75,10 +83,17 @@ class Job < ArvadosModel
 
   def dependencies
     deps = {}
-    self.script_parameters.values.each do |v|
-      next unless v.is_a? String
-      v.match(/^(([0-9a-f]{32})\b(\+[^,]+)?,?)*$/) do |locator|
-        deps[locator] = true
+    queue = self.script_parameters.values
+    while not queue.empty?
+      queue = queue.flatten.compact.collect do |v|
+        if v.is_a? Hash
+          v.values
+        elsif v.is_a? String
+          v.match(/^(([0-9a-f]{32})\b(\+[^,]+)?,?)*$/) do |locator|
+            deps[locator.to_s] = true
+          end
+          nil
+        end
       end
     end
     deps.keys
@@ -90,9 +105,10 @@ class Job < ArvadosModel
       if script_changed? or
           script_parameters_changed? or
           script_version_changed? or
-          cancelled_by_client_changed? or
-          cancelled_by_user_changed? or
-          cancelled_at_changed? or
+          (!cancelled_at_was.nil? and
+           (cancelled_by_client_changed? or
+            cancelled_by_user_changed? or
+            cancelled_at_changed?)) or
           started_at_changed? or
           finished_at_changed? or
           running_changed? or
@@ -121,4 +137,31 @@ class Job < ArvadosModel
       end
     end
   end
+
+  def update_modified_by_fields
+    if self.cancelled_at_changed?
+      # Ensure cancelled_at cannot be set to arbitrary non-now times,
+      # or changed once it is set.
+      if self.cancelled_at and not self.cancelled_at_was
+        self.cancelled_at = Time.now
+        self.cancelled_by_user_uuid = current_user.uuid
+        self.cancelled_by_client_uuid = current_api_client.uuid
+        @need_crunch_dispatch_trigger = true
+      else
+        self.cancelled_at = self.cancelled_at_was
+        self.cancelled_by_user_uuid = self.cancelled_by_user_uuid_was
+        self.cancelled_by_client_uuid = self.cancelled_by_client_uuid_was
+      end
+    end
+    super
+  end
+
+  def trigger_crunch_dispatch_if_cancelled
+    if @need_crunch_dispatch_trigger
+      File.open(Rails.configuration.crunch_dispatch_hup_trigger, 'wb') do
+        # That's all, just create a file for crunch-dispatch to see.
+      end
+    end
+  end
+
 end