Merge pull request #9 from meri025/add-log

Add Debug Logs

Author: genya0407

lib/mysql_rewinder.rb

@@ -56,7 +56,10 @@ def reset_inserted_tables
     end
 
     @inserted_tables = Set.new
-    FileUtils.rm(Dir.glob(@inserted_table_record_dir.join("#{@initialized_pid}.*.inserted_tables").to_s))
+    files = Dir.glob(@inserted_table_record_dir.join("#{@initialized_pid}.*.inserted_tables").to_s)
+
+    FileUtils.rm(files)
+    @logger&.debug { "[MysqlRewinder] removed files: #{files.join(', ')}" } if files.any?
   end
 
   def calculate_inserted_tables

lib/mysql_rewinder/cleaner.rb

@@ -19,7 +19,11 @@ def clean_all
 
     def clean(tables:)
       target_tables = (tables - @except_tables) & all_tables
-      return if target_tables.empty?
+
+      if target_tables.empty?
+        @logger&.debug { "[MysqlRewinder][#{@db_config[:database]}] Skip DELETE query because target_table is empty." }
+        return
+      end
 
       log_and_execute("SET FOREIGN_KEY_CHECKS = 0;")
       log_and_execute(target_tables.map { |table| "DELETE FROM #{table}" }.join(';'))
@@ -42,7 +46,7 @@ def log_and_execute(sql)
       res = @client.execute(sql)
       duration = (Time.now - start_ts) * 1000
 
-      name = "[MysqlRewinder] Cleaner SQL (#{duration.round(1)}ms)"
+      name = "[MysqlRewinder][#{@db_config[:database]}] Cleaner SQL (#{duration.round(1)}ms)"
       msg = "\e[1m\e[30m#{name}\e[0m  \e[34m#{sql}\e[0m"
       @logger.debug msg
       res