Fix plugin log time format if format is JSON

lib/fluent/log.rb

@@ -532,6 +532,7 @@ def initialize(logger)
       end
 
       self.format = @logger.format
+      self.time_format = @logger.time_format
       enable_color @logger.enable_color?
     end
 
@@ -540,23 +541,29 @@ def level=(log_level_str)
     end
 
     alias orig_format= format=
+    alias orig_time_format= time_format=
     alias orig_enable_color enable_color
 
     def format=(fmt)
       self.orig_format = fmt
       @logger.format = fmt
     end
 
+    def time_format=(fmt)
+      self.orig_time_format = fmt
+      @logger.time_format = fmt
+    end
+
     def enable_color(b = true)
       orig_enable_color b
       @logger.enable_color b
     end
 
     extend Forwardable
     def_delegators '@logger', :get_worker_id, :enable_color?, :enable_debug, :enable_event,
-      :disable_events, :log_event_enabled, :log_event_enabled=, :time_format, :time_format=,
-      :time_formatter, :time_formatter=, :event, :caller_line, :puts, :write, :<<, :flush,
-      :reset, :out, :out=, :optional_header, :optional_header=, :optional_attrs, :optional_attrs=
+      :disable_events, :log_event_enabled, :log_event_enabled=, :event, :caller_line, :puts, :write,
+      :<<, :flush, :reset, :out, :out=, :optional_header, :optional_header=, :optional_attrs,
+      :optional_attrs=
   end
 
 

test/test_log.rb

@@ -744,12 +744,6 @@ def test_disable_events
       @log.disable_events(Thread.current)
     end
 
-    def test_time_format
-      assert_equal(@log.time_format, @logger.time_format)
-      @log.time_format = "time_format"
-      assert_equal(@log.time_format, @logger.time_format)
-    end
-
     def test_event
       mock(@logger).event(Fluent::Log::LEVEL_TRACE, { key: "value" })
       @log.event(Fluent::Log::LEVEL_TRACE, { key: "value" })
@@ -794,6 +788,36 @@ def test_optional_attrs
       assert_equal(@log.optional_attrs, @logger.optional_attrs)
     end
   end
+
+  sub_test_case "partially delegated" do
+    def setup
+      super
+      @log = Fluent::PluginLogger.new(@logger)
+    end
+
+    data(
+      text: [:text, "2016-04-21 11:58:41 +0900 [info]: yaaay\n"],
+      json: [:json, %Q({"time":"2016-04-21 11:58:41 +0900","level":"info","message":"yaaay"}\n)],
+    )
+    def test_format(data)
+      fmt, expected_log_line = data
+      @log.format = fmt
+      @log.info "yaaay"
+      assert{ @log_device.logs.include? expected_log_line }
+    end
+
+    data(
+      text: [:text, "2016 [info]: yaaay\n"],
+      json: [:json, %Q({"time":"2016","level":"info","message":"yaaay"}\n)],
+    )
+    def test_time_format(data)
+      fmt, expected_log_line = data
+      @log.format = fmt
+      @log.time_format = "%Y"
+      @log.info "yaaay"
+      assert{ @log_device.logs.include? expected_log_line }
+    end
+  end
 end
 
 class PluginLoggerMixinTest < Test::Unit::TestCase