X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/de298e4e20a7ed07e16ed3cac87a18a66c0ceb83..a6439c7ddc3407193889386051f06df2a1e74ea9:/services/api/app/controllers/arvados/v1/jobs_controller.rb

diff --git a/services/api/app/controllers/arvados/v1/jobs_controller.rb b/services/api/app/controllers/arvados/v1/jobs_controller.rb
index 46dd0ecf8f..8ef6acdc38 100644
--- a/services/api/app/controllers/arvados/v1/jobs_controller.rb
+++ b/services/api/app/controllers/arvados/v1/jobs_controller.rb
@@ -5,40 +5,65 @@ class Arvados::V1::JobsController < ApplicationController
   skip_before_filter :find_object_by_uuid, :only => :queue
   skip_before_filter :render_404_if_no_object, :only => :queue
 
-  def index
-    return super unless @where.is_a? Hash
-    want_ancestor = @where[:script_version_descends_from]
-    if want_ancestor
-      # Check for missing commit_ancestor rows, and create them if
-      # possible.
-      @objects.
-        dup.
-        includes(:commit_ancestors). # I wish Rails would let me
-                                     # specify here which
-                                     # commit_ancestors I am
-                                     # interested in.
-        each do |o|
-        if o.commit_ancestors.
-            select { |ca| ca.ancestor == want_ancestor }.
-            empty? and !o.script_version.nil?
-          begin
-            o.commit_ancestors << CommitAncestor.find_or_create_by_descendant_and_ancestor(o.script_version, want_ancestor)
-          rescue
+  def create
+    [:repository, :script, :script_version, :script_parameters].each do |r|
+      if !resource_attrs[r]
+        return render json: {
+          :error => "#{r} attribute must be specified"
+        }, status: :unprocessable_entity
+      end
+    end
+
+    # We used to ask for the minimum_, exclude_, and no_reuse params
+    # in the job resource. Now we advertise them as flags that alter
+    # the behavior of the create action.
+    [:minimum_script_version, :exclude_script_versions].each do |attr|
+      if resource_attrs.has_key? attr
+        params[attr] = resource_attrs.delete attr
+      end
+    end
+    if resource_attrs.has_key? :no_reuse
+      params[:find_or_create] = !resource_attrs.delete(:no_reuse)
+    end
+
+    if params[:find_or_create]
+      r = Commit.find_commit_range(current_user,
+                                   resource_attrs[:repository],
+                                   params[:minimum_script_version],
+                                   resource_attrs[:script_version],
+                                   params[:exclude_script_versions])
+      # Search for jobs whose script_version is in the list of commits
+      # returned by find_commit_range
+      @object = nil
+      incomplete_job = nil
+      Job.readable_by(current_user).where(script: resource_attrs[:script],
+                                          script_version: r).
+        each do |j|
+        if j.nondeterministic != true and
+            ((j.success == true and j.output != nil) or j.running == true) and
+            j.script_parameters == resource_attrs[:script_parameters]
+          if j.running
+            # We'll use this if we don't find a job that has completed
+            incomplete_job ||= j
+          else
+            # Record the first job in the list
+            if !@object
+              @object = j
+            end
+            # Ensure that all candidate jobs actually did produce the same output
+            if @object.output != j.output
+              @object = nil
+              break
+            end
           end
         end
-        o.commit_ancestors.
-          select { |ca| ca.ancestor == want_ancestor }.
-          select(&:is).
-          first
+        @object ||= incomplete_job
+        if @object
+          return show
+        end
       end
-      # Now it is safe to do an .includes().where() because we are no
-      # longer interested in jobs that have other ancestors but not
-      # want_ancestor.
-      @objects = @objects.
-        includes(:commit_ancestors).
-        where('commit_ancestors.ancestor = ? and commit_ancestors.is = ?',
-              want_ancestor, true)
     end
+
     super
   end