[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/github.com/coreos/etcd/pkg/tlsutil/tlsutil.go b/vendor/github.com/coreos/etcd/pkg/tlsutil/tlsutil.go
new file mode 100644
index 0000000..79b1f63
--- /dev/null
+++ b/vendor/github.com/coreos/etcd/pkg/tlsutil/tlsutil.go
@@ -0,0 +1,72 @@
+// Copyright 2016 The etcd Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tlsutil
+
+import (
+ "crypto/tls"
+ "crypto/x509"
+ "encoding/pem"
+ "io/ioutil"
+)
+
+// NewCertPool creates x509 certPool with provided CA files.
+func NewCertPool(CAFiles []string) (*x509.CertPool, error) {
+ certPool := x509.NewCertPool()
+
+ for _, CAFile := range CAFiles {
+ pemByte, err := ioutil.ReadFile(CAFile)
+ if err != nil {
+ return nil, err
+ }
+
+ for {
+ var block *pem.Block
+ block, pemByte = pem.Decode(pemByte)
+ if block == nil {
+ break
+ }
+ cert, err := x509.ParseCertificate(block.Bytes)
+ if err != nil {
+ return nil, err
+ }
+ certPool.AddCert(cert)
+ }
+ }
+
+ return certPool, nil
+}
+
+// NewCert generates TLS cert by using the given cert,key and parse function.
+func NewCert(certfile, keyfile string, parseFunc func([]byte, []byte) (tls.Certificate, error)) (*tls.Certificate, error) {
+ cert, err := ioutil.ReadFile(certfile)
+ if err != nil {
+ return nil, err
+ }
+
+ key, err := ioutil.ReadFile(keyfile)
+ if err != nil {
+ return nil, err
+ }
+
+ if parseFunc == nil {
+ parseFunc = tls.X509KeyPair
+ }
+
+ tlsCert, err := parseFunc(cert, key)
+ if err != nil {
+ return nil, err
+ }
+ return &tlsCert, nil
+}