Golang Message.GetPayload方法代碼示例

func (self *LogOutput) Run(or OutputRunner, h PluginHelper) (err error) {
	inChan := or.InChan()

	var (
		pack *PipelinePack
		msg  *message.Message
	)
	for plc := range inChan {
		pack = plc.Pack
		msg = pack.Message
		if self.payloadOnly {
			log.Printf(msg.GetPayload())
		} else {
			log.Printf("<\n\tTimestamp: %s\n"+
				"\tType: %s\n"+
				"\tHostname: %s\n"+
				"\tPid: %d\n"+
				"\tUUID: %s\n"+
				"\tLogger: %s\n"+
				"\tPayload: %s\n"+
				"\tEnvVersion: %s\n"+
				"\tSeverity: %d\n"+
				"\tFields: %+v\n"+
				"\tCaptures: %v\n>\n",
				time.Unix(0, msg.GetTimestamp()), msg.GetType(),
				msg.GetHostname(), msg.GetPid(), msg.GetUuidString(),
				msg.GetLogger(), msg.GetPayload(), msg.GetEnvVersion(),
				msg.GetSeverity(), msg.Fields, plc.Captures)
		}
		pack.Recycle()
	}
	return
}

func (so *S3Output) WriteToBuffer(buffer *bytes.Buffer, msg *message.Message, or OutputRunner) (err error) {
	_, err = buffer.Write([]byte(msg.GetPayload()))
	if err != nil {
		return
	}
	if buffer.Len() > so.config.BufferChunkLimit {
		err = so.SaveToDisk(buffer, or)
	}
	return
}

func (c *CleanMessageFormatter) Format(m *message.Message) (doc []byte, err error) {
	buf := bytes.Buffer{}
	buf.WriteString(`{`)
	// Iterates over fields configured for clean formating
	for _, f := range c.fields {
		switch strings.ToLower(f) {
		case "uuid":
			writeField(&buf, f, strconv.Quote(m.GetUuidString()))
		case "timestamp":
			t := time.Unix(0, m.GetTimestamp()).UTC()
			writeField(&buf, f, strconv.Quote(t.Format(c.timestampFormat)))
		case "type":
			writeField(&buf, f, strconv.Quote(m.GetType()))
		case "logger":
			writeField(&buf, f, strconv.Quote(m.GetLogger()))
		case "severity":
			writeField(&buf, f, strconv.Itoa(int(m.GetSeverity())))
		case "payload":
			if utf8.ValidString(m.GetPayload()) {
				writeField(&buf, f, strconv.Quote(m.GetPayload()))
			}
		case "envversion":
			writeField(&buf, f, strconv.Quote(m.GetEnvVersion()))
		case "pid":
			writeField(&buf, f, strconv.Itoa(int(m.GetPid())))
		case "hostname":
			writeField(&buf, f, strconv.Quote(m.GetHostname()))
		case "fields":
			for _, field := range m.Fields {
				switch field.GetValueType() {
				case message.Field_STRING:
					writeField(&buf, *field.Name, strconv.Quote(field.GetValue().(string)))
				case message.Field_BYTES:
					data := field.GetValue().([]byte)[:]
					writeField(&buf, *field.Name, strconv.Quote(base64.StdEncoding.EncodeToString(data)))
				case message.Field_INTEGER:
					writeField(&buf, *field.Name, strconv.FormatInt(field.GetValue().(int64), 10))
				case message.Field_DOUBLE:
					writeField(&buf, *field.Name, strconv.FormatFloat(field.GetValue().(float64),
						'g', -1, 64))
				case message.Field_BOOL:
					writeField(&buf, *field.Name, strconv.FormatBool(field.GetValue().(bool)))
				}
			}
		default:
			// Search fo a given fields in the message
			err = fmt.Errorf("Unable to find field: %s", f)
			return
		}
	}
	buf.WriteString(`}`)
	doc = buf.Bytes()
	return
}

func (cwo *CloudwatchOutput) Run(or pipeline.OutputRunner, h pipeline.PluginHelper) (err error) {
	inChan := or.InChan()

	payloads := make(chan CloudwatchDatapoints, cwo.backlog)
	go cwo.Submitter(payloads, or)

	var (
		pack          *pipeline.PipelinePack
		msg           *message.Message
		rawDataPoints *CloudwatchDatapointPayload
		dataPoints    *CloudwatchDatapoints
	)
	dataPoints = new(CloudwatchDatapoints)
	dataPoints.Datapoints = make([]cloudwatch.MetricDatum, 0, 0)

	for pack = range inChan {
		rawDataPoints = new(CloudwatchDatapointPayload)
		msg = pack.Message
		err = json.Unmarshal([]byte(msg.GetPayload()), rawDataPoints)
		if err != nil {
			or.LogMessage(fmt.Sprintf("warning, unable to parse payload: %s", err))
			err = nil
			continue
		}
		// Run through the list and convert them to CloudwatchDatapoints
		for _, rawDatum := range rawDataPoints.Datapoints {
			datum := cloudwatch.MetricDatum{
				Dimensions:      rawDatum.Dimensions,
				MetricName:      rawDatum.MetricName,
				Unit:            rawDatum.Unit,
				Value:           rawDatum.Value,
				StatisticValues: rawDatum.StatisticValues,
			}
			if rawDatum.Timestamp != "" {
				parsedTime, err := message.ForgivingTimeParse("", rawDatum.Timestamp, cwo.tzLocation)
				if err != nil {
					or.LogMessage(fmt.Sprintf("unable to parse timestamp for datum: %s", rawDatum))
					continue
				}
				datum.Timestamp = parsedTime
			}
			dataPoints.Datapoints = append(dataPoints.Datapoints, datum)
		}
		payloads <- *dataPoints
		dataPoints.Datapoints = dataPoints.Datapoints[:0]
		rawDataPoints.Datapoints = rawDataPoints.Datapoints[:0]
		pack.Recycle()
	}
	or.LogMessage("shutting down AWS Cloudwatch submitter")
	cwo.stopChan <- true
	<-cwo.stopChan
	return
}

func (s *SmtpOutput) Run(or OutputRunner, h PluginHelper) (err error) {
	inChan := or.InChan()

	var (
		pack       *PipelinePack
		msg        *message.Message
		contents   []byte
		subject    string
		message    string
		headerText string
	)

	if s.conf.Subject == "" {
		subject = "Heka [" + or.Name() + "]"
	} else {
		subject = s.conf.Subject
	}

	header := make(map[string]string)
	header["From"] = s.conf.SendFrom
	header["Subject"] = subject
	header["MIME-Version"] = "1.0"
	header["Content-Type"] = "text/plain; charset=\"utf-8\""
	header["Content-Transfer-Encoding"] = "base64"

	for k, v := range header {
		headerText += fmt.Sprintf("%s: %s\r\n", k, v)
	}

	for pack = range inChan {
		msg = pack.Message
		message = headerText
		if s.conf.PayloadOnly {
			message += "\r\n" + base64.StdEncoding.EncodeToString([]byte(msg.GetPayload()))
			err = s.sendFunction(s.conf.Host, s.auth, s.conf.SendFrom, s.conf.SendTo, []byte(message))
		} else {
			if contents, err = json.Marshal(msg); err == nil {
				message += "\r\n" + base64.StdEncoding.EncodeToString(contents)
				err = s.sendFunction(s.conf.Host, s.auth, s.conf.SendFrom, s.conf.SendTo, []byte(message))
			} else {
				or.LogError(err)
			}
		}
		if err != nil {
			or.LogError(err)
		}
		pack.Recycle()
	}
	return
}

// Parses a Heka message and extracts the information necessary to start a new
// SandboxFilter
func (this *SandboxManagerFilter) loadSandbox(fr pipeline.FilterRunner,
	h pipeline.PluginHelper, dir string, msg *message.Message) (err error) {
	fv, _ := msg.GetFieldValue("config")
	if config, ok := fv.(string); ok {
		var configFile pipeline.ConfigFile
		if _, err = toml.Decode(config, &configFile); err != nil {
			return fmt.Errorf("loadSandbox failed: %s\n", err)
		} else {
			for name, conf := range configFile {
				name = getSandboxName(fr.Name(), name)
				if _, ok := h.Filter(name); ok {
					// todo support reload
					return fmt.Errorf("loadSandbox failed: %s is already running", name)
				}
				fr.LogMessage(fmt.Sprintf("Loading: %s", name))
				confFile := filepath.Join(dir, fmt.Sprintf("%s.toml", name))
				err = ioutil.WriteFile(confFile, []byte(config), 0600)
				if err != nil {
					return
				}
				var sbc SandboxConfig
				if err = toml.PrimitiveDecode(conf, &sbc); err != nil {
					return fmt.Errorf("loadSandbox failed: %s\n", err)
				}
				scriptFile := filepath.Join(dir, fmt.Sprintf("%s.%s", name, sbc.ScriptType))
				err = ioutil.WriteFile(scriptFile, []byte(msg.GetPayload()), 0600)
				if err != nil {
					removeAll(dir, fmt.Sprintf("%s.*", name))
					return
				}
				// check/clear the old state preservation file
				// this avoids issues with changes to the data model since the last load
				// and prevents holes in the graph from looking like anomalies
				os.Remove(filepath.Join(pipeline.PrependBaseDir(DATA_DIR), name+DATA_EXT))
				var runner pipeline.FilterRunner
				runner, err = this.createRunner(dir, name, conf)
				if err != nil {
					removeAll(dir, fmt.Sprintf("%s.*", name))
					return
				}
				err = h.PipelineConfig().AddFilterRunner(runner)
				if err == nil {
					this.currentFilters++
				}
				break // only interested in the first item
			}
		}
	}
	return
}

// Parses a Heka message and extracts the information necessary to start a new
// SandboxFilter
func (this *SandboxManagerFilter) loadSandbox(fr pipeline.FilterRunner,
	h pipeline.PluginHelper, dir string, msg *message.Message) (err error) {

	fv, _ := msg.GetFieldValue("config")
	if config, ok := fv.(string); ok {
		var configFile pipeline.ConfigFile
		if _, err = toml.Decode(config, &configFile); err != nil {
			return fmt.Errorf("loadSandbox failed: %s\n", err)
		}

		for name, conf := range configFile {
			name = getSandboxName(fr.Name(), name)
			if _, ok := h.Filter(name); ok {
				// todo support reload
				return fmt.Errorf("loadSandbox failed: %s is already running", name)
			}
			fr.LogMessage(fmt.Sprintf("Loading: %s", name))
			confFile := filepath.Join(dir, fmt.Sprintf("%s.toml", name))
			err = ioutil.WriteFile(confFile, []byte(config), 0600)
			if err != nil {
				return
			}
			var sbc SandboxConfig
			// Default, will get overwritten if necessary
			sbc.ScriptType = "lua"
			if err = toml.PrimitiveDecode(conf, &sbc); err != nil {
				return fmt.Errorf("loadSandbox failed: %s\n", err)
			}
			scriptFile := filepath.Join(dir, fmt.Sprintf("%s.%s", name, sbc.ScriptType))
			err = ioutil.WriteFile(scriptFile, []byte(msg.GetPayload()), 0600)
			if err != nil {
				removeAll(dir, fmt.Sprintf("%s.*", name))
				return
			}
			var runner pipeline.FilterRunner
			runner, err = this.createRunner(dir, name, conf)
			if err != nil {
				removeAll(dir, fmt.Sprintf("%s.*", name))
				return
			}
			err = this.pConfig.AddFilterRunner(runner)
			if err == nil {
				atomic.AddInt32(&this.currentFilters, 1)
			}
			break // only interested in the first item
		}
	}
	return
}

func (n *NagiosOutput) Run(or OutputRunner, h PluginHelper) (err error) {
	inChan := or.InChan()

	var (
		pack    *PipelinePack
		msg     *message.Message
		payload string
	)

	for pack = range inChan {
		msg = pack.Message
		payload = msg.GetPayload()
		pos := strings.IndexAny(payload, ":")
		state := "3" // UNKNOWN
		if pos != -1 {
			switch payload[:pos] {
			case "OK":
				state = "0"
			case "WARNING":
				state = "1"
			case "CRITICAL":
				state = "2"
			}
		}

		data := url.Values{
			"cmd_typ":          {"30"}, // PROCESS_SERVICE_CHECK_RESULT
			"cmd_mod":          {"2"},  // CMDMODE_COMMIT
			"host":             {msg.GetHostname()},
			"service":          {msg.GetLogger()},
			"plugin_state":     {state},
			"plugin_output":    {payload[pos+1:]},
			"performance_data": {""}}
		req, err := http.NewRequest("POST", n.conf.Url,
			strings.NewReader(data.Encode()))
		if err == nil {
			req.SetBasicAuth(n.conf.Username, n.conf.Password)
			if resp, err := n.client.Do(req); err == nil {
				resp.Body.Close()
			} else {
				or.LogError(err)
			}
		} else {
			or.LogError(err)
		}
		pack.Recycle()
	}
	return
}

func (this *SandboxManagerFilter) loadSandbox(fr FilterRunner,
	h PluginHelper, dir string, msg *message.Message) (err error) {
	fv, _ := msg.GetFieldValue("config")
	if config, ok := fv.(string); ok {
		var configFile ConfigFile
		if _, err = toml.Decode(config, &configFile); err != nil {
			return fmt.Errorf("loadSandbox failed: %s\n", err)
		} else {
			for name, conf := range configFile {
				name = getSandboxName(fr.Name(), name)
				if _, ok := h.Filter(name); ok {
					// todo support reload
					return fmt.Errorf("loadSandbox failed: %s is already running", name)
				}
				fr.LogMessage(fmt.Sprintf("Loading: %s", name))
				confFile := path.Join(dir, fmt.Sprintf("%s.toml", name))
				err = ioutil.WriteFile(confFile, []byte(config), 0600)
				if err != nil {
					return
				}
				var sbfc SandboxFilterConfig
				if err = toml.PrimitiveDecode(conf, &sbfc); err != nil {
					return fmt.Errorf("loadSandbox failed: %s\n", err)
				}
				scriptFile := path.Join(dir, fmt.Sprintf("%s.%s", name, sbfc.Sbc.ScriptType))
				err = ioutil.WriteFile(scriptFile, []byte(msg.GetPayload()), 0600)
				if err != nil {
					removeAll(dir, fmt.Sprintf("%s.*", name))
					return
				}
				var runner FilterRunner
				runner, err = createRunner(dir, name, conf)
				if err != nil {
					removeAll(dir, fmt.Sprintf("%s.*", name))
					return
				}
				err = h.PipelineConfig().AddFilterRunner(runner)
				if err == nil {
					this.currentFilters++
				}
				break // only interested in the first item
			}
		}
	}
	return
}

func (n *NagiosOutput) Run(or OutputRunner, h PluginHelper) (err error) {
	inChan := or.InChan()

	var (
		pack    *PipelinePack
		msg     *message.Message
		payload string
	)

	for pack = range inChan {
		msg = pack.Message
		payload = msg.GetPayload()
		pos := strings.IndexAny(payload, ":")
		state := "3" // UNKNOWN
		if pos != -1 {
			switch payload[:pos] {
			case "OK":
				state = "0"
			case "WARNING":
				state = "1"
			case "CRITICAL":
				state = "2"
			}
		}

		host := n.conf.NagiosHost
		if host == "" {
			host = msg.GetHostname()
		}
		service_description := n.conf.NagiosServiceDescription
		if service_description == "" {
			service_description = msg.GetLogger()
		}
		payload = payload[pos+1:]

		err = n.submitter(host, service_description, state, payload)
		if err != nil {
			err = NewRetryMessageError(err.Error())
			pack.Recycle(err)
			continue
		}
		or.UpdateCursor(pack.QueueCursor)
		pack.Recycle(nil)
	}
	return
}

func getMessageVariable(msg *message.Message, mvar *messageVariable) string {
	if mvar.header {
		switch mvar.name {
		case "Type":
			return msg.GetType()
		case "Logger":
			return msg.GetLogger()
		case "Hostname":
			return msg.GetHostname()
		case "Payload":
			return msg.GetPayload()
		default:
			return ""
		}
	} else {
		return getFieldAsString(msg, mvar)
	}
}

func (self *DashboardOutput) Run(or OutputRunner, h PluginHelper) (err error) {
	inChan := or.InChan()
	ticker := or.Ticker()

	var (
		ok   = true
		plc  *PipelineCapture
		pack *PipelinePack
		msg  *message.Message
	)
	for ok {
		select {
		case plc, ok = <-inChan:
			if !ok {
				break
			}
			pack = plc.Pack
			msg = pack.Message
			switch msg.GetType() {
			case "heka.all-report":
				fn := path.Join(self.workingDirectory, "heka_report.json")
				overwriteFile(fn, msg.GetPayload())
			case "heka.sandbox-output":
				tmp, ok := msg.GetFieldValue("payload_type")
				if ok {
					if pt, ok := tmp.(string); ok && pt == "cbuf" {
						html := path.Join(self.workingDirectory, msg.GetLogger()+".html")
						_, err := os.Stat(html)
						if err != nil {
							overwriteFile(html, fmt.Sprintf(getCbufTemplate(), msg.GetLogger(), msg.GetLogger()))
						}
						fn := path.Join(self.workingDirectory, msg.GetLogger()+"."+pt)
						overwriteFile(fn, msg.GetPayload())
					}
				}
			case "heka.sandbox-terminated":
				fn := path.Join(self.workingDirectory, self.terminationFile)
				if file, err := os.OpenFile(fn, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0644); err == nil {
					line := fmt.Sprintf("%d\t%s\t%v\n", msg.GetTimestamp()/1e9, msg.GetLogger(), msg.GetPayload())
					file.WriteString(line)
					file.Close()
				}
			}
			plc.Pack.Recycle()
		case <-ticker:
			go h.PipelineConfig().allReportsMsg()
		}
	}
	return
}

//.........這裏部分代碼省略.........
		fmt.Printf("Match specification - %s\n", err)
		os.Exit(2)
	}

	var file *os.File
	if file, err = os.Open(flag.Arg(0)); err != nil {
		fmt.Printf("%s\n", err)
		os.Exit(3)
	}
	defer file.Close()

	var out *os.File
	if "" == *flagOutput {
		out = os.Stdout
	} else {
		if out, err = os.OpenFile(*flagOutput, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644); err != nil {
			fmt.Printf("%s\n", err)
			os.Exit(4)
		}
		defer out.Close()
	}

	var offset int64
	if offset, err = file.Seek(*flagOffset, 0); err != nil {
		fmt.Printf("%s\n", err)
		os.Exit(5)
	}

	sRunner, err := makeSplitterRunner()
	if err != nil {
		fmt.Println(err)
		os.Exit(7)
	}
	msg := new(message.Message)
	var processed, matched int64

	fmt.Printf("Input:%s  Offset:%d  Match:%s  Format:%s  Tail:%t  Output:%s\n",
		flag.Arg(0), *flagOffset, *flagMatch, *flagFormat, *flagTail, *flagOutput)
	for true {
		n, record, err := sRunner.GetRecordFromStream(file)
		if n > 0 && n != len(record) {
			fmt.Printf("Corruption detected at offset: %d bytes: %d\n", offset, n-len(record))
		}
		if err != nil {
			if err == io.EOF {
				if !*flagTail || "count" == *flagFormat {
					break
				}
				time.Sleep(time.Duration(500) * time.Millisecond)
			} else {
				break
			}
		} else {
			if len(record) > 0 {
				processed += 1
				headerLen := int(record[1]) + message.HEADER_FRAMING_SIZE
				if err = proto.Unmarshal(record[headerLen:], msg); err != nil {
					fmt.Printf("Error unmarshalling message at offset: %d error: %s\n", offset, err)
					continue
				}

				if !match.Match(msg) {
					continue
				}
				matched += 1

				switch *flagFormat {
				case "count":
					// no op
				case "json":
					contents, _ := json.Marshal(msg)
					fmt.Fprintf(out, "%s\n", contents)
				case "heka":
					fmt.Fprintf(out, "%s", record)
				default:
					fmt.Fprintf(out, "Timestamp: %s\n"+
						"Type: %s\n"+
						"Hostname: %s\n"+
						"Pid: %d\n"+
						"UUID: %s\n"+
						"Logger: %s\n"+
						"Payload: %s\n"+
						"EnvVersion: %s\n"+
						"Severity: %d\n"+
						"Fields: %+v\n\n",
						time.Unix(0, msg.GetTimestamp()), msg.GetType(),
						msg.GetHostname(), msg.GetPid(), msg.GetUuidString(),
						msg.GetLogger(), msg.GetPayload(), msg.GetEnvVersion(),
						msg.GetSeverity(), msg.Fields)
				}
			}
		}
		offset += int64(n)
	}
	fmt.Printf("Processed: %d, matched: %d messages\n", processed, matched)
	if err != nil {
		fmt.Printf("%s\n", err)
		os.Exit(6)
	}
}

func EncoderSpec(c gs.Context) {
	t := new(ts.SimpleT)
	ctrl := gomock.NewController(t)
	defer ctrl.Finish()

	// NewPipelineConfig sets up Globals which is needed for the
	// pipeline.Prepend*Dir functions to not die during plugin Init().
	_ = pipeline.NewPipelineConfig(nil)

	c.Specify("A SandboxEncoder", func() {

		encoder := new(SandboxEncoder)
		conf := encoder.ConfigStruct().(*SandboxEncoderConfig)
		supply := make(chan *pipeline.PipelinePack, 1)
		pack := pipeline.NewPipelinePack(supply)
		pack.Message.SetPayload("original")
		pack.Message.SetType("my_type")
		pack.Message.SetPid(12345)
		pack.Message.SetSeverity(4)
		pack.Message.SetHostname("hostname")
		pack.Message.SetTimestamp(54321)
		pack.Message.SetUuid(uuid.NewRandom())
		var (
			result []byte
			err    error
		)

		c.Specify("emits JSON correctly", func() {
			conf.ScriptFilename = "../lua/testsupport/encoder_json.lua"
			err = encoder.Init(conf)
			c.Expect(err, gs.IsNil)

			result, err = encoder.Encode(pack)
			c.Expect(err, gs.IsNil)
			msg := new(message.Message)
			err = json.Unmarshal(result, msg)
			c.Expect(err, gs.IsNil)
			c.Expect(msg.GetTimestamp(), gs.Equals, int64(54321))
			c.Expect(msg.GetPid(), gs.Equals, int32(12345))
			c.Expect(msg.GetSeverity(), gs.Equals, int32(4))
			c.Expect(msg.GetHostname(), gs.Equals, "hostname")
			c.Expect(msg.GetPayload(), gs.Equals, "original")
			c.Expect(msg.GetType(), gs.Equals, "my_type")
		})

		c.Specify("emits text correctly", func() {
			conf.ScriptFilename = "../lua/testsupport/encoder_text.lua"
			err = encoder.Init(conf)
			c.Expect(err, gs.IsNil)

			result, err = encoder.Encode(pack)
			c.Expect(err, gs.IsNil)
			c.Expect(string(result), gs.Equals, "Prefixed original")
		})

		c.Specify("emits protobuf correctly", func() {

			c.Specify("when inject_message is used", func() {
				conf.ScriptFilename = "../lua/testsupport/encoder_protobuf.lua"
				err = encoder.Init(conf)
				c.Expect(err, gs.IsNil)

				result, err = encoder.Encode(pack)
				c.Expect(err, gs.IsNil)

				msg := new(message.Message)
				err = proto.Unmarshal(result, msg)
				c.Expect(err, gs.IsNil)
				c.Expect(msg.GetTimestamp(), gs.Equals, int64(54321))
				c.Expect(msg.GetPid(), gs.Equals, int32(12345))
				c.Expect(msg.GetSeverity(), gs.Equals, int32(4))
				c.Expect(msg.GetHostname(), gs.Equals, "hostname")
				c.Expect(msg.GetPayload(), gs.Equals, "mutated")
				c.Expect(msg.GetType(), gs.Equals, "after")
			})

			c.Specify("when `write_message` is used", func() {
				conf.ScriptFilename = "../lua/testsupport/encoder_writemessage.lua"
				err = encoder.Init(conf)
				c.Expect(err, gs.IsNil)

				result, err = encoder.Encode(pack)
				c.Expect(err, gs.IsNil)

				msg := new(message.Message)
				err = proto.Unmarshal(result, msg)
				c.Expect(err, gs.IsNil)
				c.Expect(msg.GetPayload(), gs.Equals, "mutated payload")
				c.Expect(pack.Message.GetPayload(), gs.Equals, "original")
			})
		})

	})
}

func EncoderSpec(c gs.Context) {
	t := new(ts.SimpleT)
	ctrl := gomock.NewController(t)
	defer ctrl.Finish()

	// NewPipelineConfig sets up Globals which is needed for the
	// pipeline.Prepend*Dir functions to not die during plugin Init().
	pConfig := pipeline.NewPipelineConfig(nil)

	c.Specify("A SandboxEncoder", func() {

		encoder := new(SandboxEncoder)
		encoder.SetPipelineConfig(pConfig)
		conf := encoder.ConfigStruct().(*SandboxEncoderConfig)
		supply := make(chan *pipeline.PipelinePack, 1)
		pack := pipeline.NewPipelinePack(supply)
		pack.Message.SetPayload("original")
		pack.Message.SetType("my_type")
		pack.Message.SetPid(12345)
		pack.Message.SetSeverity(4)
		pack.Message.SetHostname("hostname")
		pack.Message.SetTimestamp(54321)
		pack.Message.SetUuid(uuid.NewRandom())
		var (
			result []byte
			err    error
		)

		c.Specify("emits JSON correctly", func() {
			conf.ScriptFilename = "../lua/testsupport/encoder_json.lua"
			err = encoder.Init(conf)
			c.Expect(err, gs.IsNil)

			result, err = encoder.Encode(pack)
			c.Expect(err, gs.IsNil)
			msg := new(message.Message)
			err = json.Unmarshal(result, msg)
			c.Expect(err, gs.IsNil)
			c.Expect(msg.GetTimestamp(), gs.Equals, int64(54321))
			c.Expect(msg.GetPid(), gs.Equals, int32(12345))
			c.Expect(msg.GetSeverity(), gs.Equals, int32(4))
			c.Expect(msg.GetHostname(), gs.Equals, "hostname")
			c.Expect(msg.GetPayload(), gs.Equals, "original")
			c.Expect(msg.GetType(), gs.Equals, "my_type")
		})

		c.Specify("emits text correctly", func() {
			conf.ScriptFilename = "../lua/testsupport/encoder_text.lua"
			err = encoder.Init(conf)
			c.Expect(err, gs.IsNil)

			result, err = encoder.Encode(pack)
			c.Expect(err, gs.IsNil)
			c.Expect(string(result), gs.Equals, "Prefixed original")
		})

		c.Specify("emits protobuf correctly", func() {

			c.Specify("when inject_message is used", func() {
				conf.ScriptFilename = "../lua/testsupport/encoder_protobuf.lua"
				err = encoder.Init(conf)
				c.Expect(err, gs.IsNil)

				result, err = encoder.Encode(pack)
				c.Expect(err, gs.IsNil)

				msg := new(message.Message)
				err = proto.Unmarshal(result, msg)
				c.Expect(err, gs.IsNil)
				c.Expect(msg.GetTimestamp(), gs.Equals, int64(54321))
				c.Expect(msg.GetPid(), gs.Equals, int32(12345))
				c.Expect(msg.GetSeverity(), gs.Equals, int32(4))
				c.Expect(msg.GetHostname(), gs.Equals, "hostname")
				c.Expect(msg.GetPayload(), gs.Equals, "mutated")
				c.Expect(msg.GetType(), gs.Equals, "after")
			})

			c.Specify("when `write_message` is used", func() {
				conf.ScriptFilename = "../lua/testsupport/encoder_writemessage.lua"
				err = encoder.Init(conf)
				c.Expect(err, gs.IsNil)

				result, err = encoder.Encode(pack)
				c.Expect(err, gs.IsNil)

				msg := new(message.Message)
				err = proto.Unmarshal(result, msg)
				c.Expect(err, gs.IsNil)
				c.Expect(msg.GetPayload(), gs.Equals, "mutated payload")
				c.Expect(pack.Message.GetPayload(), gs.Equals, "original")
			})
		})
	})

	c.Specify("cbuf librato encoder", func() {
		encoder := new(SandboxEncoder)
		encoder.SetPipelineConfig(pConfig)
		conf := encoder.ConfigStruct().(*SandboxEncoderConfig)
		supply := make(chan *pipeline.PipelinePack, 1)
		pack := pipeline.NewPipelinePack(supply)
//.........這裏部分代碼省略.........