use "crypto/rand".Read

client/client.go

@@ -194,7 +194,7 @@ func drainBody(b io.ReadCloser) (r1, r2 io.ReadCloser, err error) {
 // Do not use as a reliable way to get unique IDs, instead use for things like logging.
 func shortID() string {
 	b := make([]byte, 6)
-	if _, err := io.ReadFull(rand.Reader, b); err != nil {
+	if _, err := rand.Read(b); err != nil {
 		panic(err)
 	}
 	return base64.StdEncoding.EncodeToString(b)

error.go

@@ -33,7 +33,6 @@ import (
 	"crypto/rand"
 	"encoding/base64"
 	"fmt"
-	"io"
 	"strings"
 )
 
@@ -359,7 +358,7 @@ func asErrorResponse(err error) *ErrorResponse {
 // are not catastrophic.
 func newErrorID() string {
 	b := make([]byte, 6)
-	if _, err := io.ReadFull(rand.Reader, b); err != nil {
+	if _, err := rand.Read(b); err != nil {
 		panic(err)
 	}
 	return base64.StdEncoding.EncodeToString(b)

middleware/log_request.go

@@ -5,7 +5,6 @@ import (
 	"crypto/rand"
 	"encoding/base64"
 	"encoding/json"
-	"io"
 	"net"
 	"net/http"
 	"sort"
@@ -112,7 +111,7 @@ func LogRequest(verbose bool, sensitiveHeaders ...string) goa.Middleware {
 // Do not use as a reliable way to get unique IDs, instead use for things like logging.
 func shortID() string {
 	b := make([]byte, 6)
-	if _, err := io.ReadFull(rand.Reader, b); err != nil {
+	if _, err := rand.Read(b); err != nil {
 		panic(err)
 	}
 	return base64.StdEncoding.EncodeToString(b)

middleware/request_id.go

@@ -5,7 +5,6 @@ import (
 	"crypto/rand"
 	"encoding/base64"
 	"fmt"
-	"io"
 	"net/http"
 	"strings"
 	"sync/atomic"
@@ -34,7 +33,7 @@ func init() {
 	var b64 string
 	replacer := strings.NewReplacer("+", "", "/", "")
 	for len(b64) < 10 {
-		if _, err := io.ReadFull(rand.Reader, buf[:]); err != nil {
+		if _, err := rand.Read(buf[:]); err != nil {
 			panic(err)
 		}
 		b64 = base64.StdEncoding.EncodeToString(buf[:])

middleware/xray/middleware.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"crypto/rand"
 	"fmt"
-	"io"
 	"net"
 	"net/http"
 	"sync"
@@ -108,7 +107,7 @@ func New(service, daemon string) (goa.Middleware, error) {
 // compatible with AWS X-Ray.
 func NewID() string {
 	b := make([]byte, 8)
-	if _, err := io.ReadFull(rand.Reader, b); err != nil {
+	if _, err := rand.Read(b); err != nil {
 		panic(err)
 	}
 	return fmt.Sprintf("%x", b)
@@ -118,7 +117,7 @@ func NewID() string {
 // compatible with AWS X-Ray.
 func NewTraceID() string {
 	b := make([]byte, 12)
-	if _, err := io.ReadFull(rand.Reader, b); err != nil {
+	if _, err := rand.Read(b); err != nil {
 		panic(err)
 	}
 	return fmt.Sprintf("%d-%x-%s", 1, time.Now().Unix(), fmt.Sprintf("%x", b))