address some of Daniel's comments

plugins/parsers/grok/parser.go

@@ -71,7 +71,7 @@ type Parser struct {
 	NamedPatterns      []string
 	CustomPatterns     string
 	CustomPatternFiles []string
-	Measurement        string
+	MetricName         string
 
 	// Timezone is an optional component to help render log dates to
 	// your chosen zone.
@@ -167,10 +167,6 @@ func (p *Parser) Compile() error {
 		p.addCustomPatterns(scanner)
 	}
 
-	if p.Measurement == "" {
-		p.Measurement = "logparser_grok"
-	}
-
 	p.loc, err = time.LoadLocation(p.Timezone)
 	if err != nil {
 		log.Printf("W! improper timezone supplied (%s), setting loc to UTC", p.Timezone)
@@ -348,7 +344,7 @@ func (p *Parser) ParseLine(line string) (telegraf.Metric, error) {
 		return nil, fmt.Errorf("logparser_grok: must have one or more fields")
 	}
 
-	return metric.New(p.Measurement, tags, fields, p.tsModder.tsMod(timestamp))
+	return metric.New(p.MetricName, tags, fields, p.tsModder.tsMod(timestamp))
 }
 
 func (p *Parser) Parse(buf []byte) ([]telegraf.Metric, error) {

plugins/parsers/grok/parser_test.go

@@ -9,8 +9,8 @@ import (
 
 func TestGrokParse(t *testing.T) {
 	parser := Parser{
-		Measurement: "t_met",
-		Patterns:    []string{"%{COMMON_LOG_FORMAT}"},
+		MetricName: "t_met",
+		Patterns:   []string{"%{COMMON_LOG_FORMAT}"},
 	}
 	parser.Compile()
 	metrics, err := parser.Parse([]byte(`127.0.0.1 user-identifier frank [10/Oct/2000:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326`))