Add text report text-errors flag

Closes #566

Signed-off-by: Tomás Senart <tsenart@gmail.com>

go.mod

@@ -21,6 +21,8 @@ require (
 require (
 	github.com/iancoleman/orderedmap v0.3.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
+	github.com/shurcooL/httpfs v0.0.0-20230704072500-f1e31cf0ba5c // indirect
+	github.com/shurcooL/vfsgen v0.0.0-20230704071429-0000e147ea92 // indirect
 	golang.org/x/mod v0.8.0 // indirect
 	golang.org/x/sys v0.10.0 // indirect
 	golang.org/x/text v0.11.0 // indirect

go.sum

@@ -26,6 +26,10 @@ github.com/miekg/dns v1.1.55 h1:GoQ4hpsj0nFLYe+bWiCToyrBEJXkQfOOIvFGFy0lEgo=
 github.com/miekg/dns v1.1.55/go.mod h1:uInx36IzPl7FYnDcMeVWxj9byh7DutNykX4G9Sj60FY=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/shurcooL/httpfs v0.0.0-20230704072500-f1e31cf0ba5c h1:aqg5Vm5dwtvL+YgDpBcK1ITf3o96N/K7/wsRXQnUTEs=
+github.com/shurcooL/httpfs v0.0.0-20230704072500-f1e31cf0ba5c/go.mod h1:owqhoLW1qZoYLZzLnBw+QkPP9WZnjlSWihhxAJC1+/M=
+github.com/shurcooL/vfsgen v0.0.0-20230704071429-0000e147ea92 h1:OfRzdxCzDhp+rsKWXuOO2I/quKMJ/+TQwVbIP/gltZg=
+github.com/shurcooL/vfsgen v0.0.0-20230704071429-0000e147ea92/go.mod h1:7/OT02F6S6I7v6WXb+IjhMuZEYfH/RJ5RwEWnEo5BMg=
 github.com/streadway/quantile v0.0.0-20220407130108-4246515d968d h1:X4+kt6zM/OVO6gbJdAfJR60MGPsqCzbtXNnjoGqdfAs=
 github.com/streadway/quantile v0.0.0-20220407130108-4246515d968d/go.mod h1:lbP8tGiBjZ5YWIc2fzuRpTaz0b/53vT6PEs3QuAWzuU=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=

lib/reporters.go

@@ -52,9 +52,24 @@ func NewHistogramReporter(h *Histogram) Reporter {
 	}
 }
 
+// TextReporterOpt is a functional option for configuring a TextReporter.
+type TextReporterOpt func(*textReporterOpts)
+
+// TextReporterErrors configures a TextReporter to write out potentially long errors.
+// True by default.
+func TextReporterErrors(v bool) TextReporterOpt {
+	return func(o *textReporterOpts) {
+		o.errors = v
+	}
+}
+
+type textReporterOpts struct {
+	errors bool
+}
+
 // NewTextReporter returns a Reporter that writes out Metrics as aligned,
 // formatted text.
-func NewTextReporter(m *Metrics) Reporter {
+func NewTextReporter(m *Metrics, options ...TextReporterOpt) Reporter {
 	const fmtstr = "Requests\t[total, rate, throughput]\t%d, %.2f, %.2f\n" +
 		"Duration\t[total, attack, wait]\t%s, %s, %s\n" +
 		"Latencies\t[min, mean, 50, 90, 95, 99, max]\t%s, %s, %s, %s, %s, %s, %s\n" +
@@ -63,6 +78,11 @@ func NewTextReporter(m *Metrics) Reporter {
 		"Success\t[ratio]\t%.2f%%\n" +
 		"Status Codes\t[code:count]\t"
 
+	opts := textReporterOpts{errors: true}
+	for _, opt := range options {
+		opt(&opts)
+	}
+
 	return func(w io.Writer) (err error) {
 		tw := tabwriter.NewWriter(w, 0, 8, 2, ' ', tabwriter.StripEscape)
 		if _, err = fmt.Fprintf(tw, fmtstr,
@@ -98,14 +118,16 @@ func NewTextReporter(m *Metrics) Reporter {
 			}
 		}
 
-		if _, err = fmt.Fprintln(tw, "\nError Set:"); err != nil {
-			return err
-		}
-
-		for _, e := range m.Errors {
-			if _, err = fmt.Fprintln(tw, e); err != nil {
+		if opts.errors {
+			if _, err = fmt.Fprintln(tw, "\nError Set:"); err != nil {
 				return err
 			}
+
+			for _, e := range m.Errors {
+				if _, err = fmt.Fprintln(tw, e); err != nil {
+					return err
+				}
+			}
 		}
 
 		return tw.Flush()

report.go

@@ -42,6 +42,7 @@ func reportCmd() command {
 	every := fs.Duration("every", 0, "Report interval")
 	output := fs.String("output", "stdout", "Output file")
 	buckets := fs.String("buckets", "", "Histogram buckets, e.g.: \"[0,1ms,10ms]\"")
+	textErrors := fs.Bool("text-errors", true, "Show errors in the text report")
 
 	fs.Usage = func() {
 		fmt.Fprintf(os.Stderr, "%s\n", reportUsage)
@@ -53,11 +54,11 @@ func reportCmd() command {
 		if len(files) == 0 {
 			files = append(files, "stdin")
 		}
-		return report(files, *typ, *output, *every, *buckets)
+		return report(files, *typ, *output, *every, *buckets, *textErrors)
 	}}
 }
 
-func report(files []string, typ, output string, every time.Duration, bucketsStr string) error {
+func report(files []string, typ, output string, every time.Duration, bucketsStr string, textErrors bool) error {
 	if len(typ) < 4 {
 		return fmt.Errorf("invalid report type: %s", typ)
 	}
@@ -84,7 +85,7 @@ func report(files []string, typ, output string, every time.Duration, bucketsStr
 		return fmt.Errorf("The plot reporter has been deprecated and succeeded by the vegeta plot command")
 	case "text":
 		var m vegeta.Metrics
-		rep, report = vegeta.NewTextReporter(&m), &m
+		rep, report = vegeta.NewTextReporter(&m, vegeta.TextReporterErrors(textErrors)), &m
 	case "json":
 		var m vegeta.Metrics
 		if bucketsStr != "" {