bug fix

1，修复配置修改或重启后sincedb中记录的last_check_at被重置为当前时间的问题。
2，修复tail模式下配置修改或重启后导致当前采集的日志在rotate后重复采集的问题

lib/filewatch/sincedb_collection.rb

@@ -191,7 +191,14 @@ def flush_at_interval
 
     def handle_association(sincedb_value, watched_file)
       watched_file.update_bytes_read(sincedb_value.position)
-      sincedb_value.set_watched_file(watched_file)
+      if watched_file.all_read?
+        # avoid the last_changed_at of sincedb_value which record the watched file has bean read over being changed when reload sincedb
+        sincedb_value.set_watched_file_without_touch(watched_file)
+        logger.trace("handle_association call set_watched_file_without_touch")
+      else
+        sincedb_value.set_watched_file(watched_file)
+        logger.trace("handle_association call set_watched_file")
+      end
       watched_file.initial_completed
       if watched_file.all_read?
         watched_file.ignore

lib/filewatch/sincedb_value.rb

@@ -47,6 +47,10 @@ def set_watched_file(watched_file)
       @watched_file = watched_file
     end
 
+    def set_watched_file_without_touch(watched_file)
+      @watched_file = watched_file
+    end
+
     def touch
       @last_changed_at = Time.now.to_f
     end

lib/filewatch/tail_mode/processor.rb

@@ -195,6 +195,9 @@ def process_rotation_in_progress(watched_files)
             potential_sdb_value.set_watched_file(watched_file)
           end
         end
+        # Clean the path_in_sincedb because a file with the same name appears, this file must have been renamed
+        # Fix the duplicating collection after reloading sincedb(logstash restart or change logstash.conf)
+        sdb_value.add_path_in_sincedb(nil) unless sdb_value.nil?
         logger.trace("---------- >>>> Rotation In Progress: after handling rotation", "this watched_file details" => watched_file.details, "sincedb_value" => (potential_sdb_value || sdb_value))
       end
     end