Fixed issue #2108 - 30 concurrent agents + each of them 30 overviews - script/scheduler.rb takes 100% CPU time - background jobs cannot be processed.

app/models/ticket/screen_options.rb

@@ -115,10 +115,13 @@ returns
       group_agent_roles_ids = Role.joins(', roles_groups').where("roles.id = roles_groups.role_id AND roles_groups.access = 'full' AND roles_groups.group_id = ? AND roles.id IN (?)", group.id, agent_role_ids).pluck(:id)
       group_agent_role_user_ids = User.joins(:roles).where(roles: { id: group_agent_roles_ids }).pluck(:id)
 
-      User.where(id: group_agent_user_ids.concat(group_agent_role_user_ids).uniq, active: true).each do |user|
-        dependencies[:group_id][group.id][:owner_id].push user.id
-        next if agents[user.id]
-        agents[user.id] = true
+      User.where(id: group_agent_user_ids.concat(group_agent_role_user_ids).uniq, active: true).pluck(:id).each do |user_id|
+        dependencies[:group_id][group.id][:owner_id].push user_id
+        next if agents[user_id]
+        agents[user_id] = true
+        next if assets[:User] && assets[:User][user_id]
+        user = User.lookup(id: user_id)
+        next if !user
         assets = user.assets(assets)
       end
 

lib/sessions/backend/base.rb

@@ -1,6 +1,7 @@
 class Sessions::Backend::Base
 
   attr_writer :user
+  attr_writer :time_now
 
   def initialize(user, asset_lookup, client, client_id, ttl = 10)
     @user         = user
@@ -9,6 +10,7 @@ class Sessions::Backend::Base
     @ttl          = ttl
     @asset_lookup = asset_lookup
     @last_change  = nil
+    @time_now     = Time.zone.now.to_i
   end
 
   def asset_push(record, assets)
@@ -16,7 +18,7 @@ class Sessions::Backend::Base
     @asset_lookup[class_name] ||= {}
     @asset_lookup[class_name][record.id] = {
       updated_at: record.updated_at,
-      pushed_at: Time.zone.now,
+      pushed_at: @time_now,
     }
     record.assets(assets)
   end
@@ -32,7 +34,7 @@ class Sessions::Backend::Base
     return true if @asset_lookup[class_name][record_id].blank?
     return true if @asset_lookup[class_name][record_id][:updated_at] < updated_at
     return true if @asset_lookup[class_name][record_id][:pushed_at].blank?
-    return true if @asset_lookup[class_name][record_id][:pushed_at] < Time.zone.now - 2.hours
+    return true if @asset_lookup[class_name][record_id][:pushed_at] < @time_now - 7200
     false
   end
 

lib/sessions/backend/collections.rb

@@ -7,6 +7,7 @@ class Sessions::Backend::Collections < Sessions::Backend::Base
     @ttl          = ttl
     @asset_lookup = asset_lookup
     @backends     = backend
+    @time_now     = Time.zone.now.to_i
   end
 
   def push

lib/sessions/backend/collections/base.rb

@@ -2,6 +2,7 @@ class Sessions::Backend::Collections::Base < Sessions::Backend::Base
   class << self; attr_accessor :model, :permissions end
 
   attr_writer :user
+  attr_writer :time_now
 
   def initialize(user, asset_lookup, client, client_id, ttl)
     @user         = user
@@ -10,6 +11,7 @@ class Sessions::Backend::Collections::Base < Sessions::Backend::Base
     @ttl          = ttl
     @asset_lookup = asset_lookup
     @last_change  = nil
+    @time_now     = Time.zone.now.to_i
   end
 
   def load
@@ -53,6 +55,7 @@ class Sessions::Backend::Collections::Base < Sessions::Backend::Base
     end
 
     # collect assets
+    @time_now = Time.zone.now.to_i
     assets = {}
     items.each do |item|
       next if !asset_needed?(item)

lib/sessions/backend/ticket_overview_list.rb

@@ -15,6 +15,7 @@ class Sessions::Backend::TicketOverviewList < Sessions::Backend::Base
     @last_overview        = {}
     @last_overview_change = nil
     @last_ticket_change   = nil
+    @time_now             = Time.zone.now.to_i
   end
 
   def load
@@ -87,6 +88,8 @@ class Sessions::Backend::TicketOverviewList < Sessions::Backend::Base
       )
     end
 
+    @time_now = Time.zone.now.to_i
+
     # push overviews
     results = []
     index_and_lists.each do |data|
@@ -114,7 +117,6 @@ class Sessions::Backend::TicketOverviewList < Sessions::Backend::Base
         }
         results.push result
       else
-
         @client.log "push overview_list #{overview.link} for user #{@user.id}"
 
         # send update to browser

test/unit/session_basic_ticket_test.rb

@@ -55,20 +55,29 @@ class SessionBasicTicketTest < ActiveSupport::TestCase
 
     travel 120.minutes
 
+    client1.time_now = Time.zone.now.to_i
     assert(client1.asset_needed_by_updated_at?(ticket.class.to_s, ticket.id, ticket.updated_at))
     client1.asset_push(ticket, {})
+
+    client2.time_now = Time.zone.now.to_i
     assert(client2.asset_needed_by_updated_at?(ticket.class.to_s, ticket.id, ticket.updated_at))
     client2.asset_push(ticket, {})
 
+    client1.time_now = Time.zone.now.to_i
     assert_not(client1.asset_needed_by_updated_at?(ticket.class.to_s, ticket.id, ticket.updated_at))
     client1.asset_push(ticket, {})
+
+    client2.time_now = Time.zone.now.to_i
     assert_not(client2.asset_needed_by_updated_at?(ticket.class.to_s, ticket.id, ticket.updated_at))
     client2.asset_push(ticket, {})
 
     ticket.touch
 
+    client1.time_now = Time.zone.now.to_i
     assert(client1.asset_needed_by_updated_at?(ticket.class.to_s, ticket.id, ticket.updated_at))
     client1.asset_push(ticket, {})
+
+    client2.time_now = Time.zone.now.to_i
     assert(client2.asset_needed_by_updated_at?(ticket.class.to_s, ticket.id, ticket.updated_at))
     client2.asset_push(ticket, {})
 
@@ -77,8 +86,11 @@ class SessionBasicTicketTest < ActiveSupport::TestCase
 
     travel 125.minutes
 
+    client1.time_now = Time.zone.now.to_i
     assert(client1.asset_needed?(ticket))
     client1.asset_push(ticket, {})
+
+    client2.time_now = Time.zone.now.to_i
     assert(client2.asset_needed?(ticket))
     client2.asset_push(ticket, {})