[VOL-5291] On demand statistics for ONU and OLT
Change-Id: I4850bb0f0d2235122cb0c1bcf835b3672bb34436
Signed-off-by: Akash Reddy Kankanala <akash.kankanala@radisys.com>
diff --git a/vendor/google.golang.org/grpc/internal/metadata/metadata.go b/vendor/google.golang.org/grpc/internal/metadata/metadata.go
index b8733db..c82e608 100644
--- a/vendor/google.golang.org/grpc/internal/metadata/metadata.go
+++ b/vendor/google.golang.org/grpc/internal/metadata/metadata.go
@@ -22,6 +22,9 @@
package metadata
import (
+ "fmt"
+ "strings"
+
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/resolver"
)
@@ -72,3 +75,58 @@
addr.Attributes = addr.Attributes.WithValue(mdKey, mdValue(md))
return addr
}
+
+// Validate validates every pair in md with ValidatePair.
+func Validate(md metadata.MD) error {
+ for k, vals := range md {
+ if err := ValidatePair(k, vals...); err != nil {
+ return err
+ }
+ }
+ return nil
+}
+
+// hasNotPrintable return true if msg contains any characters which are not in %x20-%x7E
+func hasNotPrintable(msg string) bool {
+ // for i that saving a conversion if not using for range
+ for i := 0; i < len(msg); i++ {
+ if msg[i] < 0x20 || msg[i] > 0x7E {
+ return true
+ }
+ }
+ return false
+}
+
+// ValidatePair validate a key-value pair with the following rules (the pseudo-header will be skipped) :
+//
+// - key must contain one or more characters.
+// - the characters in the key must be contained in [0-9 a-z _ - .].
+// - if the key ends with a "-bin" suffix, no validation of the corresponding value is performed.
+// - the characters in the every value must be printable (in [%x20-%x7E]).
+func ValidatePair(key string, vals ...string) error {
+ // key should not be empty
+ if key == "" {
+ return fmt.Errorf("there is an empty key in the header")
+ }
+ // pseudo-header will be ignored
+ if key[0] == ':' {
+ return nil
+ }
+ // check key, for i that saving a conversion if not using for range
+ for i := 0; i < len(key); i++ {
+ r := key[i]
+ if !(r >= 'a' && r <= 'z') && !(r >= '0' && r <= '9') && r != '.' && r != '-' && r != '_' {
+ return fmt.Errorf("header key %q contains illegal characters not in [0-9a-z-_.]", key)
+ }
+ }
+ if strings.HasSuffix(key, "-bin") {
+ return nil
+ }
+ // check value
+ for _, val := range vals {
+ if hasNotPrintable(val) {
+ return fmt.Errorf("header key %q contains value with non-printable ASCII characters", key)
+ }
+ }
+ return nil
+}