Merge branch '3136-stale-pipeline-instance-display' closes #3136

[arvados.git] / services / api / app / controllers / application_controller.rb

diff --git a/services/api/app/controllers/application_controller.rb b/services/api/app/controllers/application_controller.rb
index 51b0c3c82a81a35f8d6a6c0c120aa6518b89aa86..2400365fd85d1e27b522a252654afa0234916115 100644 (file)
--- a/services/api/app/controllers/application_controller.rb
+++ b/services/api/app/controllers/application_controller.rb
@@ -65,7 +65,7 @@ class ApplicationController < ActionController::Base
   end
 
   def show
-    render json: @object.as_api_response
+    render json: @object.as_api_response(nil, select: @select)
   end
 
   def create
@@ -104,36 +104,53 @@ class ApplicationController < ActionController::Base
     if e.respond_to? :backtrace and e.backtrace
       logger.error e.backtrace.collect { |x| x + "\n" }.join('')
     end
-    if @object and @object.errors and @object.errors.full_messages and not @object.errors.full_messages.empty?
+    if (@object.respond_to? :errors and
+        @object.errors.andand.full_messages.andand.any?)
       errors = @object.errors.full_messages
+      logger.error errors.inspect
     else
       errors = [e.inspect]
     end
     status = e.respond_to?(:http_status) ? e.http_status : 422
-    render json: { errors: errors }, status: status
+    send_error(*errors, status: status)
   end
 
   def render_not_found(e=ActionController::RoutingError.new("Path not found"))
     logger.error e.inspect
-    render json: { errors: ["Path not found"] }, status: 404
+    send_error("Path not found", status: 404)
   end
 
   protected
 
+  def send_error(*args)
+    if args.last.is_a? Hash
+      err = args.pop
+    else
+      err = {}
+    end
+    err[:errors] ||= args
+    err[:error_token] = [Time.now.utc.to_i, "%08x" % rand(16 ** 8)].join("+")
+    status = err.delete(:status) || 422
+    logger.error "Error #{err[:error_token]}: #{status}"
+    render json: err, status: status
+  end
+
   def find_objects_for_index
     @objects ||= model_class.readable_by(*@read_users)
     apply_where_limit_order_params
   end
 
-  def apply_filters
-    ft = record_filters @filters, @objects.table_name
+  def apply_filters model_class=nil
+    model_class ||= self.model_class
+    ft = record_filters @filters, model_class
     if ft[:cond_out].any?
-      @objects = @objects.where(ft[:cond_out].join(' AND '), *ft[:param_out])
+      @objects = @objects.where('(' + ft[:cond_out].join(') AND (') + ')',
+                                *ft[:param_out])
     end
   end
 
-  def apply_where_limit_order_params
-    apply_filters
+  def apply_where_limit_order_params *args
+    apply_filters *args
 
     ar_table_name = @objects.table_name
     if @where.is_a? Hash and @where.any?
@@ -189,7 +206,26 @@ class ApplicationController < ActionController::Base
       end
     end
 
-    @objects = @objects.select(@select.map { |s| "#{table_name}.#{ActiveRecord::Base.connection.quote_column_name s.to_s}" }.join ", ") if @select
+    if @select
+      unless action_name.in? %w(create update destroy)
+        # Map attribute names in @select to real column names, resolve
+        # those to fully-qualified SQL column names, and pass the
+        # resulting string to the select method.
+        api_column_map = model_class.attributes_required_columns
+        columns_list = @select.
+          flat_map { |attr| api_column_map[attr] }.
+          uniq.
+          map { |s| "#{table_name}.#{ActiveRecord::Base.connection.quote_column_name s}" }
+        @objects = @objects.select(columns_list.join(", "))
+      end
+
+      # This information helps clients understand what they're seeing
+      # (Workbench always expects it), but they can't select it explicitly
+      # because it's not an SQL column.  Always add it.
+      # (This is harmless, given that clients can deduce what they're
+      # looking at by the returned UUID anyway.)
+      @select |= ["kind"]
+    end
     @objects = @objects.order(@orders.join ", ") if @orders.any?
     @objects = @objects.limit(@limit)
     @objects = @objects.offset(@offset)
@@ -242,12 +278,8 @@ class ApplicationController < ActionController::Base
   def require_login
     if not current_user
       respond_to do |format|
-        format.json {
-          render :json => { errors: ['Not logged in'] }.to_json, status: 401
-        }
-        format.html {
-          redirect_to '/auth/joshid'
-        }
+        format.json { send_error("Not logged in", status: 401) }
+        format.html { redirect_to '/auth/joshid' }
       end
       false
     end
@@ -255,14 +287,14 @@ class ApplicationController < ActionController::Base
 
   def admin_required
     unless current_user and current_user.is_admin
-      render :json => { errors: ['Forbidden'] }.to_json, status: 403
+      send_error("Forbidden", status: 403)
     end
   end
 
   def require_auth_scope
     if @read_auths.empty?
       if require_login != false
-        render :json => { errors: ['Forbidden'] }.to_json, status: 403
+        send_error("Forbidden", status: 403)
       end
       false
     end