Auto-update dependencies (#66)

Produced via:
  `dep ensure -update knative.dev/test-infra knative.dev/pkg`
/assign @mattmoor

Gopkg.lock

@@ -927,7 +927,7 @@
 
 [[projects]]
   branch = "master"
-  digest = "1:bb229ac008f2b7ddcd122f857584627de4cf78f31f3001ca79560f48659db88f"
+  digest = "1:a54bc33aee102c303962336ef74981e9c49f4a4a26f411c5bd9f6b6b248fd3c3"
   name = "knative.dev/pkg"
   packages = [
     "apis",
@@ -946,7 +946,7 @@
     "metrics/metricskey",
   ]
   pruneopts = "T"
-  revision = "2b848f71969c997809a2dbea8351eaadb23e9bc9"
+  revision = "8a10634b4fa4df6dc450bfd883e85a33e76f2471"
 
 [[projects]]
   branch = "master"

vendor/knative.dev/pkg/kmeta/names.go

@@ -26,15 +26,35 @@ import (
 const (
 	longest = 63
 	md5Len  = 32
-	head    = longest - md5Len
+	head    = longest - md5Len // How much to truncate to fit the hash.
 )
 
 // ChildName generates a name for the resource based upon the parent resource and suffix.
 // If the concatenated name is longer than K8s permits the name is hashed and truncated to permit
 // construction of the resource, but still keeps it unique.
+// If the suffix itself is longer than 31 characters, then the whole string will be hashed
+// and `parent|hash|suffix` will be returned, where parent and suffix will be trimmed to
+// fit (prefix of parent at most of length 31, and prefix of suffix at most length 30).
 func ChildName(parent, suffix string) string {
 	n := parent
 	if len(parent) > (longest - len(suffix)) {
+		// If the suffix is longer than the longest allowed suffix, then
+		// we hash the whole combined string and use that as the suffix.
+		if head-len(suffix) <= 0 {
+			h := md5.Sum([]byte(parent + suffix))
+			// 1. trim parent, if needed
+			if head < len(parent) {
+				parent = parent[:head]
+			}
+			// Format the return string, if it's shorter than longest: pad with
+			// beginning of the suffix. This happens, for example, when parent is
+			// short, but the suffix is very long.
+			ret := parent + fmt.Sprintf("%x", h)
+			if d := longest - len(ret); d > 0 {
+				ret += suffix[:d]
+			}
+			return ret
+		}
 		n = fmt.Sprintf("%s%x", parent[:head-len(suffix)], md5.Sum([]byte(parent)))
 	}
 	return n + suffix