patch to https://github.com/fullstorydev/grpcurl to enable repeating the given RPCs for performance measurements

patch.diff

diff --git a/cmd/grpcurl/grpcurl.go b/cmd/grpcurl/grpcurl.go
index aaa3bbf..92489ef 100644
--- a/cmd/grpcurl/grpcurl.go
+++ b/cmd/grpcurl/grpcurl.go
@@ -115,6 +115,9 @@ var (
                Enable verbose output.`))
        serverName = flags.String("servername", "", prettify(`
                Override server name when validating TLS certificate.`))
+       repeatCount = flags.Int("repeat", 1, prettify(`
+               Submit the rpc the given number of times (default 1), for performance
+               measurements.`))
 )
 
 func init() {
@@ -213,6 +216,9 @@ func main() {
        if *emitDefaults && *format != "json" {
                warn("The -emit-defaults is only used when using json format.")
        }
+       if *repeatCount <= 0 {
+               fail(nil, "The -repeat argument must be greater than zero.")
+       }
 
        args := flags.Args()
 
@@ -547,6 +553,19 @@ func main() {
                if err != nil {
                        fail(err, "Error invoking method %q", symbol)
                }
+
+               for i := 1; i < *repeatCount; i++ {
+                       in = strings.NewReader(*data)
+                       rf, formatter, err = grpcurl.RequestParserAndFormatterFor(grpcurl.Format(*format), descSource, *emitDefaults, includeSeparators, in)
+                       if err != nil {
+                               fail(err, "Failed to construct request parser and formatter for %q", *format)
+                       }
+                       err = grpcurl.InvokeRPC(ctx, descSource, cc, symbol, append(addlHeaders, rpcHeaders...), h, rf.Next)
+                       if err != nil {
+                               fail(err, "Error invoking method %q", symbol)
+                       }
+               }
+
                reqSuffix := ""
                respSuffix := ""
                reqCount := rf.NumRequests()
@@ -613,7 +632,7 @@ func prettify(docString string) string {
                j++
        }
 
-       return strings.Join(parts[:j], "\n"+indent())
+       return strings.Join(parts[:j], "\n")
 }
 
 func warn(msg string, args ...interface{}) {