remove getter methods which prepar by metrics_create

Signed-off-by: Shizuo Fujita <fujita@clear-code.com>

Author: Watson1978

lib/fluent/plugin/bare_output.rb

@@ -40,22 +40,6 @@ def process(tag, es)
         raise NotImplementedError, "BUG: output plugins MUST implement this method"
       end
 
-      def num_errors
-        @num_errors_metrics.get
-      end
-
-      def emit_count
-        @emit_count_metrics.get
-      end
-
-      def emit_size
-        @emit_size_metrics.get
-      end
-
-      def emit_records
-        @emit_records_metrics.get
-      end
-
       def initialize
         super
         @counter_mutex = Mutex.new

lib/fluent/plugin/buffer.rb

@@ -196,6 +196,8 @@ def initialize
         @mutex = Mutex.new
       end
 
+      # The metrics_create method defines getter methods named stage_byte_size and queue_byte_size.
+      # For compatibility, stage_size, stage_size=, queue_size, and queue_size= are still available.
       def stage_size
         @stage_size_metrics.get
       end

lib/fluent/plugin/filter.rb

@@ -41,14 +41,6 @@ def initialize
         @enable_size_metrics = false
       end
 
-      def emit_records
-        @emit_records_metrics.get
-      end
-
-      def emit_size
-        @emit_size_metrics.get
-      end
-
       def configure(conf)
         super
 

lib/fluent/plugin/input.rb

@@ -37,14 +37,6 @@ def initialize
         @enable_size_metrics = false
       end
 
-      def emit_records
-        @emit_records_metrics.get
-      end
-
-      def emit_size
-        @emit_size_metrics.get
-      end
-
       def configure(conf)
         super
 

lib/fluent/plugin/multi_output.rb

@@ -56,22 +56,6 @@ def initialize
         @enable_size_metrics = false
       end
 
-      def num_errors
-        @num_errors_metrics.get
-      end
-
-      def emit_count
-        @emit_count_metrics.get
-      end
-
-      def emit_size
-        @emit_size_metrics.get
-      end
-
-      def emit_records
-        @emit_records_metrics.get
-      end
-
       def statistics
         stats = {
           'num_errors' => @num_errors_metrics.get,

lib/fluent/plugin/output.rb

@@ -171,30 +171,6 @@ def expired?
       # output_enqueue_thread_waiting: for test of output.rb itself
       attr_accessor :retry_for_error_chunk # if true, error flush will be retried even if under_plugin_development is true
 
-      def num_errors
-        @num_errors_metrics.get
-      end
-
-      def emit_count
-        @emit_count_metrics.get
-      end
-
-      def emit_size
-        @emit_size_metrics.get
-      end
-
-      def emit_records
-        @emit_records_metrics.get
-      end
-
-      def write_count
-        @write_count_metrics.get
-      end
-
-      def rollback_count
-        @rollback_count_metrics.get
-      end
-
       def initialize
         super
         @counter_mutex = Mutex.new