Migrate filter_stdout plugin to v0.14 API

lib/fluent/plugin/filter_stdout.rb

@@ -14,31 +14,38 @@
 #    limitations under the License.
 #
 
-require 'fluent/filter'
-require 'fluent/plugin'
+require 'fluent/plugin/filter'
 
-module Fluent
+module Fluent::Plugin
   class StdoutFilter < Filter
-    Plugin.register_filter('stdout', self)
+    Fluent::Plugin.register_filter('stdout', self)
+
+    helpers :formatter, :compat_parameters, :inject
+
+    DEFAULT_FORMAT_TYPE = 'stdout'
+
+    config_section :format do
+      config_set_default :@type, DEFAULT_FORMAT_TYPE
+    end
 
     # for tests
     attr_reader :formatter
 
-    desc 'The format of the output.'
-    config_param :format, :string, default: 'stdout'
-    # config_param :output_type, :string, :default => 'json' (StdoutFormatter defines this)
-
     def configure(conf)
+      compat_parameters_convert(conf, :inject, :formatter)
       super
+    end
 
-      @formatter = Plugin.new_formatter(@format)
-      @formatter.configure(conf)
+    def start
+      @formatter = formatter_create(conf: @config.elements('format').first, default_type: DEFAULT_FORMAT_TYPE)
+      super
     end
 
     def filter_stream(tag, es)
       es.each { |time, record|
         begin
-          log.write @formatter.format(tag, time, record)
+          r = inject_values_to_record(tag, time, record)
+          log.write @formatter.format(tag, time, r)
         rescue => e
           router.emit_error_event(tag, time, record, e)
         end

lib/fluent/test/helpers.rb

@@ -65,6 +65,15 @@ def msgpack(type)
           raise ArgumentError, "unknown msgpack object type '#{type}'"
         end
       end
+
+      def capture_log(driver)
+        tmp = driver.instance.log.out
+        driver.instance.log.out = StringIO.new
+        yield
+        return driver.instance.log.out.string
+      ensure
+        driver.instance.log.out = tmp
+      end
     end
   end
 end

test/plugin/test_filter_stdout.rb

@@ -1,114 +1,211 @@
 require_relative '../helper'
+require 'fluent/test/driver/filter'
 require 'fluent/plugin/filter_stdout'
 require 'timecop'
 require 'flexmock/test_unit'
 
 class StdoutFilterTest < Test::Unit::TestCase
-  include Fluent
   include FlexMock::TestCase
 
   def setup
     Fluent::Test.setup
+    @old_tz = ENV["TZ"]
+    ENV["TZ"] = "UTC"
     Timecop.freeze
   end
 
   def teardown
     super # FlexMock::TestCase requires this
     # http://flexmock.rubyforge.org/FlexMock/TestCase.html
     Timecop.return
+    ENV["TZ"] = @old_tz
   end
 
-  CONFIG = %[
-  ]
+  CONFIG = config_element('ROOT')
 
   def create_driver(conf = CONFIG)
-    Test::FilterTestDriver.new(StdoutFilter, 'filter.test').configure(conf)
+    Fluent::Test::Driver::Filter.new(Fluent::Plugin::StdoutFilter).configure(conf)
   end
 
-  def emit(d, msg, time)
+  def filter(d, time, record)
     d.run {
-      d.emit(msg, time)
-    }.filtered_as_array[0][2]
+      d.feed("filter.test", time, record)
+    }
+    d.filtered_records
   end
 
   def test_through_record
     d = create_driver
-    time = Time.now
-    filtered = emit(d, {'test' => 'test'}, Fluent::EventTime.from_time(time))
-    assert_equal({'test' => 'test'}, filtered)
+    filtered = filter(d, event_time, {'test' => 'test'})
+    assert_equal([{'test' => 'test'}], filtered)
   end
 
-  def test_configure_default
-    d = create_driver
-    assert_equal 'json', d.instance.formatter.output_type
-  end
-
-  def test_configure_output_type
-    d = create_driver(CONFIG + "\noutput_type json")
-    assert_equal 'json', d.instance.formatter.output_type
-
-    d = create_driver(CONFIG + "\noutput_type hash")
-    assert_equal 'hash', d.instance.formatter.output_type
-
-    d = create_driver(CONFIG + "\noutput_type ltsv")
-    assert_equal 'ltsv', d.instance.formatter.output_type
-
-    assert_raise(Fluent::ConfigError) do
-      d = create_driver(CONFIG + "\noutput_type foo")
+  sub_test_case "flat style parameters" do
+    sub_test_case "configure" do
+      def test_configure_default
+        d = create_driver
+        d.run {}
+        assert_equal 'json', d.instance.formatter.output_type
+      end
+
+      data(json: "json",
+           hash: "hash",
+           ltsv: "ltsv")
+      def test_output_type(data)
+        d = create_driver(CONFIG + config_element("", "", { "output_type" => data }))
+        d.run {}
+        assert_equal data, d.instance.formatter.output_type
+      end
+
+      def test_invalid_output_type
+        assert_raise(Fluent::ConfigError) do
+          d = create_driver(CONFIG + config_element("", "", { "output_type" => "foo" }))
+          d.run {}
+        end
+      end
     end
-  end
-
-  def test_output_type_json
-    d = create_driver(CONFIG + "\noutput_type json")
-    time = Time.now
-    out = capture_log(d) { emit(d, {'test' => 'test'}, Fluent::EventTime.from_time(time)) }
-    assert_equal "#{time.localtime} filter.test: {\"test\":\"test\"}\n", out
-
-    # NOTE: Float::NAN is not jsonable
-    d = create_driver(CONFIG + "\noutput_type json")
-    flexmock(d.instance.router).should_receive(:emit_error_event)
-    emit(d, {'test' => Float::NAN}, time)
-  end
 
-  def test_output_type_hash
-    d = create_driver(CONFIG + "\noutput_type hash")
-    time = Time.now
-    out = capture_log(d) { emit(d, {'test' => 'test'}, Fluent::EventTime.from_time(time)) }
-    assert_equal "#{time.localtime} filter.test: {\"test\"=>\"test\"}\n", out
+    def test_output_type_json
+      d = create_driver(CONFIG + config_element("", "", { "output_type" => "json" }))
+      etime = event_time
+      time = Time.at(etime.sec)
+      out = capture_log(d) { filter(d, etime, {'test' => 'test'}) }
+      assert_equal "#{time.localtime} filter.test: {\"test\":\"test\"}\n", out
+
+      # NOTE: Float::NAN is not jsonable
+      d = create_driver(CONFIG + config_element("", "", { "output_type" => "json" }))
+      flexmock(d.instance.router).should_receive(:emit_error_event)
+      filter(d, etime, {'test' => Float::NAN})
+    end
 
-    # NOTE: Float::NAN is not jsonable, but hash string can output it.
-    d = create_driver(CONFIG + "\noutput_type hash")
-    out = capture_log(d) { emit(d, {'test' => Float::NAN}, Fluent::EventTime.from_time(time)) }
-    assert_equal "#{time.localtime} filter.test: {\"test\"=>NaN}\n", out
-  end
+    def test_output_type_hash
+      d = create_driver(CONFIG + config_element("", "", { "output_type" => "hash" }))
+      etime = event_time
+      time = Time.at(etime.sec)
+      out = capture_log(d) { filter(d, etime, {'test' => 'test'}) }
+      assert_equal "#{time.localtime} filter.test: {\"test\"=>\"test\"}\n", out
+
+      # NOTE: Float::NAN is not jsonable, but hash string can output it.
+      d = create_driver(CONFIG + config_element("", "", { "output_type" => "hash" }))
+      out = capture_log(d) { filter(d, etime, {'test' => Float::NAN}) }
+      assert_equal "#{time.localtime} filter.test: {\"test\"=>NaN}\n", out
+    end
 
-  # Use include_time_key to output the message's time
-  def test_include_time_key
-    d = create_driver(CONFIG + "\noutput_type json\ninclude_time_key true\nutc")
-    time = Time.now
-    message_time = Fluent::EventTime.parse("2011-01-02 13:14:15 UTC")
-    out = capture_log(d) { emit(d, {'test' => 'test'}, message_time) }
-    assert_equal "#{time.localtime} filter.test: {\"test\":\"test\",\"time\":\"2011-01-02T13:14:15Z\"}\n", out
-  end
+    # Use include_time_key to output the message's time
+    def test_include_time_key
+      config = config_element("", "", {
+                                "output_type" => "json",
+                                "include_time_key" => true,
+                                "localtime" => false
+                              })
+      d = create_driver(config)
+      etime = event_time
+      time = Time.at(etime.sec)
+      message_time = event_time("2011-01-02 13:14:15 UTC")
+      out = capture_log(d) { filter(d, message_time, {'test' => 'test'}) }
+      assert_equal "#{time.localtime} filter.test: {\"test\":\"test\",\"time\":\"2011-01-02T13:14:15Z\"}\n", out
+    end
 
-  # out_stdout formatter itself can also be replaced
-  def test_format_json
-    d = create_driver(CONFIG + "\nformat json")
-    time = Time.now
-    out = capture_log(d) { emit(d, {'test' => 'test'}, Fluent::EventTime.from_time(time)) }
-    assert_equal "{\"test\":\"test\"}\n", out
+    # out_stdout formatter itself can also be replaced
+    def test_format_json
+      d = create_driver(CONFIG + config_element("", "", { "format" => "json" }))
+      out = capture_log(d) { filter(d, event_time, {'test' => 'test'}) }
+      assert_equal "{\"test\":\"test\"}\n", out
+    end
   end
 
-  private
+  sub_test_case "with <format> sub section" do
+    sub_test_case "configure" do
+      def test_default
+        conf = config_element
+        conf.elements << config_element("format", "", { "@type" => "stdout"})
+        d = create_driver(conf)
+        d.run {}
+        assert_equal("json", d.instance.formatter.output_type)
+      end
+
+      data(json: "json",
+           hash: "hash",
+           ltsv: "ltsv")
+      def test_output_type(data)
+        conf = config_element
+        conf.elements << config_element("format", "", { "@type" => "stdout", "output_type" => data })
+        d = create_driver(conf)
+        d.run {}
+        assert_equal(data, d.instance.formatter.output_type)
+      end
+
+      def test_invalid_output_type
+        conf = config_element
+        conf.elements << config_element("format", "", { "@type" => "stdout", "output_type" => "foo" })
+        assert_raise(Fluent::ConfigError) do
+          d = create_driver(conf)
+          d.run {}
+        end
+      end
+    end
 
-  # Capture the log output of the block given
-  def capture_log(d, &block)
-    tmp = d.instance.log.out
-    d.instance.log.out = StringIO.new
-    yield
-    return d.instance.log.out.string
-  ensure
-    d.instance.log.out = tmp
+    sub_test_case "output_type" do
+      def test_json
+        conf = config_element
+        conf.elements << config_element("format", "", { "@type" => "stdout", "output_type" => "json" })
+        d = create_driver(conf)
+        etime = event_time
+        time = Time.at(etime.sec)
+        out = capture_log(d) { filter(d, etime, {'test' => 'test'}) }
+        assert_equal "#{time.localtime} filter.test: {\"test\":\"test\"}\n", out
+      end
+
+      def test_json_nan
+        # NOTE: Float::NAN is not jsonable
+        conf = config_element
+        conf.elements << config_element("format", "", { "@type" => "stdout", "output_type" => "json" })
+        d = create_driver(conf)
+        etime = event_time
+        flexmock(d.instance.router).should_receive(:emit_error_event)
+        filter(d, etime, {'test' => Float::NAN})
+      end
+
+      def test_hash
+        conf = config_element
+        conf.elements << config_element("format", "", { "@type" => "stdout", "output_type" => "hash" })
+        d = create_driver(conf)
+        etime = event_time
+        time = Time.at(etime.sec)
+        out = capture_log(d) { filter(d, etime, {'test' => 'test'}) }
+        assert_equal "#{time.localtime} filter.test: {\"test\"=>\"test\"}\n", out
+      end
+
+      def test_hash_nan
+        # NOTE: Float::NAN is not jsonable, but hash string can output it.
+        conf = config_element
+        conf.elements << config_element("format", "", { "@type" => "stdout", "output_type" => "hash" })
+        d = create_driver(conf)
+        etime = event_time
+        time = Time.at(etime.sec)
+        out = capture_log(d) { filter(d, etime, {'test' => Float::NAN}) }
+        assert_equal "#{time.localtime} filter.test: {\"test\"=>NaN}\n", out
+      end
+
+      # Use include_time_key to output the message's time
+      def test_include_time_key
+        conf = config_element
+        conf.elements << config_element("format", "", {
+                                          "@type" => "stdout",
+                                          "output_type" => "json"
+                                        })
+        conf.elements << config_element("inject", "", {
+                                          "time_key" => "time",
+                                          "time_type" => "string",
+                                          "localtime" => false
+                                          })
+        d = create_driver(conf)
+        etime = event_time
+        time = Time.at(etime.sec)
+        message_time = event_time("2011-01-02 13:14:15 UTC")
+        out = capture_log(d) { filter(d, message_time, {'test' => 'test'}) }
+        assert_equal "#{time.localtime} filter.test: {\"test\":\"test\",\"time\":\"2011-01-02T13:14:15Z\"}\n", out
+      end
+    end
   end
 end
-