Log batch ID if available, fixes sidekiq#2076

Changes.md

@@ -1,3 +1,9 @@
+HEAD
+-----------
+
+- Log Sidekiq Pro's Batch ID if available [#2076]
+
+
 3.3.0
 -----------
 

lib/sidekiq/middleware/server/logging.rb

@@ -4,7 +4,7 @@ module Server
       class Logging
 
         def call(worker, item, queue)
-          Sidekiq::Logging.with_context("#{worker.class.to_s} JID-#{item['jid']}") do
+          Sidekiq::Logging.with_context("#{worker.class.to_s} JID-#{item['jid']}#{" BID-#{item['bid']}" if item['bid']}") do
             begin
               start = Time.now
               logger.info { "start" }