Refactoring: Combine chained method calls

lib/fluent/plugin/in_forward.rb

@@ -430,7 +430,7 @@ def check_ping(message, remote_addr, user_auth_salt, nonce)
       end
       _ping, hostname, shared_key_salt, shared_key_hexdigest, username, password_digest = message
 
-      node = @nodes.select{|n| n[:address].include?(remote_addr) rescue false }.first
+      node = @nodes.find{|n| n[:address].include?(remote_addr) rescue false }
       if !node && [email protected]_anonymous_source
         log.warn "Anonymous client disallowed", address: remote_addr, hostname: hostname
         return false, "anonymous source host '#{remote_addr}' denied", nil

lib/fluent/plugin/in_sample.rb

@@ -64,7 +64,7 @@ def initialize
     def configure(conf)
       super
       @sample_index = 0
-      config = conf.elements.select{|e| e.name == 'storage' }.first
+      config = conf.elements.find{|e| e.name == 'storage' }
       @storage = storage_create(usage: 'suspend', conf: config, default_type: DEFAULT_STORAGE_TYPE)
     end
 

lib/fluent/plugin/out_exec_filter.rb

@@ -187,7 +187,7 @@ def start
       @rr = 0
 
       exit_callback = ->(status){
-        c = @children.select{|child| child.pid == status.pid }.first
+        c = @children.find{|child| child.pid == status.pid }
         if c
           unless self.stopped?
             log.warn "child process exits with error code", code: status.to_i, status: status.exitstatus, signal: status.termsig

lib/fluent/plugin_helper/event_loop.rb

@@ -99,7 +99,7 @@ def start
 
       def shutdown
         @_event_loop_mutex.synchronize do
-          @_event_loop_attached_watchers.reverse.each do |w|
+          @_event_loop_attached_watchers.reverse_each do |w|
             if w.attached?
               begin
                 w.detach
@@ -116,7 +116,7 @@ def shutdown
       def after_shutdown
         timeout_at = Fluent::Clock.now + EVENT_LOOP_SHUTDOWN_TIMEOUT
         @_event_loop_mutex.synchronize do
-          @_event_loop.watchers.reverse.each do |w|
+          @_event_loop.watchers.reverse_each do |w|
             begin
               w.detach
             rescue => e

lib/fluent/plugin_helper/thread.rb

@@ -101,16 +101,16 @@ def thread_create(title)
       end
 
       def thread_exist?(title)
-        @_threads.values.select{|thread| title == thread[:_fluentd_plugin_helper_thread_title] }.size > 0
+        @_threads.values.count{|thread| title == thread[:_fluentd_plugin_helper_thread_title] } > 0
       end
 
       def thread_started?(title)
-        t = @_threads.values.select{|thread| title == thread[:_fluentd_plugin_helper_thread_title] }.first
+        t = @_threads.values.find{|thread| title == thread[:_fluentd_plugin_helper_thread_title] }
         t && t[:_fluentd_plugin_helper_thread_started]
       end
 
       def thread_running?(title)
-        t = @_threads.values.select{|thread| title == thread[:_fluentd_plugin_helper_thread_title] }.first
+        t = @_threads.values.find{|thread| title == thread[:_fluentd_plugin_helper_thread_title] }
         t && t[:_fluentd_plugin_helper_thread_running]
       end
 

test/plugin/test_in_forward.rb

@@ -367,7 +367,7 @@ def create_driver(conf=base_config)
       end
 
       logs = d.instance.log.out.logs
-      assert{ logs.select{|line| line =~ /skip invalid event/ }.size == 2 }
+      assert{ logs.count{|line| line =~ /skip invalid event/ } == 2 }
 
       d.instance_shutdown
     end
@@ -593,10 +593,10 @@ def create_driver(conf=base_config)
 
       # check log
       logs = d.instance.log.logs
-      assert_equal 1, logs.select{|line|
+      assert_equal 1, logs.count{|line|
         line =~ / \[warn\]: Input chunk size is larger than 'chunk_size_warn_limit':/ &&
         line =~ / tag="test.tag" host="#{LOCALHOST_HOSTNAME}" limit=16777216 size=16777501/
-      }.size, "large chunk warning is not logged"
+      }, "large chunk warning is not logged"
 
       d.instance_shutdown
     end
@@ -619,10 +619,10 @@ def create_driver(conf=base_config)
 
       # check log
       logs = d.instance.log.logs
-      assert_equal 1, logs.select{ |line|
+      assert_equal 1, logs.count{ |line|
         line =~ / \[warn\]: Input chunk size is larger than 'chunk_size_warn_limit':/ &&
         line =~ / tag="test.tag" host="#{LOCALHOST_HOSTNAME}" limit=16777216 size=16777501/
-      }.size, "large chunk warning is not logged"
+      }, "large chunk warning is not logged"
 
       d.instance_shutdown
     end
@@ -653,10 +653,10 @@ def create_driver(conf=base_config)
 
       # check log
       logs = d.instance.log.logs
-      assert_equal 1, logs.select{|line|
+      assert_equal 1, logs.count{|line|
         line =~ / \[warn\]: Input chunk size is larger than 'chunk_size_limit', dropped:/ &&
         line =~ / tag="test.tag" host="#{LOCALHOST_HOSTNAME}" limit=33554432 size=33554989/
-      }.size, "large chunk warning is not logged"
+      }, "large chunk warning is not logged"
 
       d.instance_shutdown
     end
@@ -676,9 +676,9 @@ def create_driver(conf=base_config)
 
       # check log
       logs = d.instance.log.logs
-      assert_equal 1, logs.select{|line|
+      assert_equal 1, logs.count{|line|
         line =~ / \[warn\]: incoming chunk is broken: host="#{LOCALHOST_HOSTNAME}" msg=#{data.inspect}/
-      }.size, "should not accept broken chunk"
+      }, "should not accept broken chunk"
 
       d.instance_shutdown
     end

test/plugin/test_in_unix.rb

@@ -174,8 +174,8 @@ def test_broken_message(data)
     assert_equal 0, @d.events.size
 
     logs = @d.instance.log.logs
-    assert_equal 1, logs.select { |line|
+    assert_equal 1, logs.count { |line|
       line =~ / \[warn\]: incoming data is broken: msg=#{data.inspect}/
-    }.size, "should not accept broken chunk"
+    }, "should not accept broken chunk"
   end
 end unless Fluent.windows?

test/plugin/test_multi_output.rb

@@ -150,7 +150,7 @@ def create_output(type=:multi)
       log_size_for_metrics_plugin_helper = 4
       expected_warn_log_size = log_size_for_multi_output_itself + log_size_for_metrics_plugin_helper
       logs = @i.log.out.logs
-      assert{ logs.select{|log| log.include?('[warn]') && log.include?("'type' is deprecated parameter name. use '@type' instead.") }.size == expected_warn_log_size }
+      assert{ logs.count{|log| log.include?('[warn]') && log.include?("'type' is deprecated parameter name. use '@type' instead.") } == expected_warn_log_size }
     end
 
     test '#emit_events calls #process always' do

test/plugin/test_out_exec_filter.rb

@@ -597,8 +597,8 @@ def create_driver(conf)
     # the number of pids should be same with number of child processes
     assert_equal 2, pid_list.size
     logs = d.instance.log.out.logs
-    assert_equal 2, logs.select { |l| l.include?('child process exits with error code') }.size
-    assert_equal 2, logs.select { |l| l.include?('respawning child process') }.size
+    assert_equal 2, logs.count { |l| l.include?('child process exits with error code') }
+    assert_equal 2, logs.count { |l| l.include?('respawning child process') }
 
   ensure
     d.run(start: false, shutdown: true)

test/plugin/test_out_file.rb

@@ -264,8 +264,8 @@ def create_driver(conf = CONFIG, opts = {})
       assert !(Dir.exist?("#{TMP_DIR}/my.data/a"))
       assert !(Dir.exist?("#{TMP_DIR}/your.data/a"))
       buffer_files = Dir.entries("#{TMP_DIR}/buf_full").reject{|e| e =~ /^\.+$/ }
-      assert_equal 2, buffer_files.select{|n| n.end_with?('.meta') }.size
-      assert_equal 2, buffer_files.select{|n| !n.end_with?('.meta') }.size
+      assert_equal 2, buffer_files.count{|n| n.end_with?('.meta') }
+      assert_equal 2, buffer_files.count{|n| !n.end_with?('.meta') }
 
       m1 = d.instance.metadata('my.data', t1, {"type" => "a"})
       m2 = d.instance.metadata('your.data', t3, {"type" => "a"})

test/plugin/test_output.rb

@@ -447,25 +447,25 @@ def waiting(seconds)
         @i.configure(config_element('ROOT', '', {}, [config_element('buffer', '')]))
         validators = @i.placeholder_validators(:path, "/my/path/${tag}/${username}/file.%Y%m%d_%H%M.log")
         assert_equal 3, validators.size
-        assert_equal 1, validators.select(&:time?).size
-        assert_equal 1, validators.select(&:tag?).size
-        assert_equal 1, validators.select(&:keys?).size
+        assert_equal 1, validators.count(&:time?)
+        assert_equal 1, validators.count(&:tag?)
+        assert_equal 1, validators.count(&:keys?)
       end
 
       test 'returns validators for time, tag and keys when a plugin is configured with these keys even if a template does not have placeholders' do
         @i.configure(config_element('ROOT', '', {}, [config_element('buffer', 'time,tag,username', {'timekey' => 60})]))
         validators = @i.placeholder_validators(:path, "/my/path/file.log")
         assert_equal 3, validators.size
-        assert_equal 1, validators.select(&:time?).size
-        assert_equal 1, validators.select(&:tag?).size
-        assert_equal 1, validators.select(&:keys?).size
+        assert_equal 1, validators.count(&:time?)
+        assert_equal 1, validators.count(&:tag?)
+        assert_equal 1, validators.count(&:keys?)
       end
 
       test 'returns a validator for time if a template has timestamp placeholders' do
         @i.configure(config_element('ROOT', '', {}, [config_element('buffer', '')]))
         validators = @i.placeholder_validators(:path, "/my/path/file.%Y-%m-%d.log")
         assert_equal 1, validators.size
-        assert_equal 1, validators.select(&:time?).size
+        assert_equal 1, validators.count(&:time?)
         assert_raise Fluent::ConfigError.new("Parameter 'path: /my/path/file.%Y-%m-%d.log' has timestamp placeholders, but chunk key 'time' is not configured") do
           validators.first.validate!
         end
@@ -475,7 +475,7 @@ def waiting(seconds)
         @i.configure(config_element('ROOT', '', {}, [config_element('buffer', 'time', {'timekey' => '30'})]))
         validators = @i.placeholder_validators(:path, "/my/path/to/file.log")
         assert_equal 1, validators.size
-        assert_equal 1, validators.select(&:time?).size
+        assert_equal 1, validators.count(&:time?)
         assert_raise Fluent::ConfigError.new("Parameter 'path: /my/path/to/file.log' doesn't have timestamp placeholders for timekey 30") do
           validators.first.validate!
         end
@@ -485,7 +485,7 @@ def waiting(seconds)
         @i.configure(config_element('ROOT', '', {}, [config_element('buffer', '')]))
         validators = @i.placeholder_validators(:path, "/my/path/${tag}/file.log")
         assert_equal 1, validators.size
-        assert_equal 1, validators.select(&:tag?).size
+        assert_equal 1, validators.count(&:tag?)
         assert_raise Fluent::ConfigError.new("Parameter 'path: /my/path/${tag}/file.log' has tag placeholders, but chunk key 'tag' is not configured") do
           validators.first.validate!
         end
@@ -495,7 +495,7 @@ def waiting(seconds)
         @i.configure(config_element('ROOT', '', {}, [config_element('buffer', 'tag')]))
         validators = @i.placeholder_validators(:path, "/my/path/file.log")
         assert_equal 1, validators.size
-        assert_equal 1, validators.select(&:tag?).size
+        assert_equal 1, validators.count(&:tag?)
         assert_raise Fluent::ConfigError.new("Parameter 'path: /my/path/file.log' doesn't have tag placeholder") do
           validators.first.validate!
         end
@@ -505,7 +505,7 @@ def waiting(seconds)
         @i.configure(config_element('ROOT', '', {}, [config_element('buffer', '')]))
         validators = @i.placeholder_validators(:path, "/my/path/${username}/file.${group}.log")
         assert_equal 1, validators.size
-        assert_equal 1, validators.select(&:keys?).size
+        assert_equal 1, validators.count(&:keys?)
         assert_raise Fluent::ConfigError.new("Parameter 'path: /my/path/${username}/file.${group}.log' has placeholders, but chunk keys doesn't have keys group,username") do
           validators.first.validate!
         end
@@ -515,7 +515,7 @@ def waiting(seconds)
         @i.configure(config_element('ROOT', '', {}, [config_element('buffer', 'username,group')]))
         validators = @i.placeholder_validators(:path, "/my/path/file.log")
         assert_equal 1, validators.size
-        assert_equal 1, validators.select(&:keys?).size
+        assert_equal 1, validators.count(&:keys?)
         assert_raise Fluent::ConfigError.new("Parameter 'path: /my/path/file.log' doesn't have enough placeholders for keys group,username") do
           validators.first.validate!
         end