add gjson functionality with toml added to internal.config

plugins/parsers/gjson/parser.go

@@ -0,0 +1,67 @@
+package gjson
+
+import (
+	"log"
+	"time"
+
+	"github.com/influxdata/telegraf"
+	"github.com/influxdata/telegraf/metric"
+	"github.com/tidwall/gjson"
+)
+
+type JSONPath struct {
+	MetricName  string
+	TagPath     map[string]string
+	FloatPath   map[string]string
+	StrPath     map[string]string
+	BoolPath    map[string]string
+	DefaultTags map[string]string
+}
+
+func (j *JSONPath) Parse(buf []byte) ([]telegraf.Metric, error) {
+	tags := j.DefaultTags
+	fields := make(map[string]interface{})
+	metrics := make([]telegraf.Metric, 0)
+
+	for k, v := range j.TagPath {
+		c := gjson.GetBytes(buf, v)
+		tags[k] = c.Str
+	}
+
+	for k, v := range j.FloatPath {
+		c := gjson.GetBytes(buf, v)
+		fields[k] = c.Num
+	}
+
+	for k, v := range j.BoolPath {
+		c := gjson.GetBytes(buf, v)
+		if c.String() == "true" {
+			fields[k] = true
+		} else if c.String() == "false" {
+			fields[k] = false
+		} else {
+			log.Printf("E! Cannot decode: %v as bool", c.String())
+		}
+	}
+
+	for k, v := range j.StrPath {
+		c := gjson.GetBytes(buf, v)
+		fields[k] = c.Str
+	}
+
+	m, err := metric.New(j.MetricName, tags, fields, time.Now())
+	if err != nil {
+		return nil, err
+	}
+	metrics = append(metrics, m)
+	return metrics, nil
+}
+
+func (j *JSONPath) ParseLine(str string) (telegraf.Metric, error) {
+	m, err := j.Parse([]byte(str))
+	return m[0], err
+}
+
+func (j *JSONPath) SetDefaultTags(tags map[string]string) {
+	j.DefaultTags = tags
+}

plugins/parsers/gjson/parser_test.go

@@ -0,0 +1,40 @@
+package gjson
+
+import (
+	"log"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestParseJsonPath(t *testing.T) {
+	testString := `{
+		"total_devices": 5,
+		"total_threads": 10,
+		"shares": {
+			"total": 5,
+			"accepted": 5,
+			"rejected": 0,
+			"avg_find_time": 4,
+			"tester": "work",
+			"tester2": true,
+			"tester3": {
+				"hello":"sup",
+				"fun":"money",
+				"break":9
+			}
+		}
+	}`
+
+	jsonParser := JSONPath{
+		MetricName: "jsonpather",
+		TagPath:    map[string]string{"hello": "shares.tester3.hello"},
+		BoolPath:   map[string]string{"bool": "shares.tester2"},
+	}
+
+	metrics, err := jsonParser.Parse([]byte(testString))
+	assert.NoError(t, err)
+	log.Printf("m[0] name: %v, tags: %v, fields: %v", metrics[0].Name(), metrics[0].Tags(), metrics[0].Fields())
+	t.Error()
+
+}