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authorbojie <bojie@dexon.org>2018-12-28 13:15:06 +0800
committerWei-Ning Huang <w@dexon.org>2019-04-09 21:32:55 +0800
commit9ca2a528ef0f3819b4921a33a3a2110d291707e0 (patch)
tree5520bb35b6de0ee1844f52f53a55c7b716955f49 /vendor/google.golang.org/grpc/credentials/internal/syscallconn.go
parentfe239cd01509d340d3450e0275f60f0536ec5455 (diff)
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app: use gcp storage instead of azure for builds (#81)
* vendor: add dependencies for using GCP storage * app: use gcp storage instead of azure for builds
Diffstat (limited to 'vendor/google.golang.org/grpc/credentials/internal/syscallconn.go')
-rw-r--r--vendor/google.golang.org/grpc/credentials/internal/syscallconn.go61
1 files changed, 61 insertions, 0 deletions
diff --git a/vendor/google.golang.org/grpc/credentials/internal/syscallconn.go b/vendor/google.golang.org/grpc/credentials/internal/syscallconn.go
new file mode 100644
index 000000000..2f4472bec
--- /dev/null
+++ b/vendor/google.golang.org/grpc/credentials/internal/syscallconn.go
@@ -0,0 +1,61 @@
+// +build !appengine
+
+/*
+ *
+ * Copyright 2018 gRPC 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 internal contains credentials-internal code.
+package internal
+
+import (
+ "net"
+ "syscall"
+)
+
+type sysConn = syscall.Conn
+
+// syscallConn keeps reference of rawConn to support syscall.Conn for channelz.
+// SyscallConn() (the method in interface syscall.Conn) is explicitly
+// implemented on this type,
+//
+// Interface syscall.Conn is implemented by most net.Conn implementations (e.g.
+// TCPConn, UnixConn), but is not part of net.Conn interface. So wrapper conns
+// that embed net.Conn don't implement syscall.Conn. (Side note: tls.Conn
+// doesn't embed net.Conn, so even if syscall.Conn is part of net.Conn, it won't
+// help here).
+type syscallConn struct {
+ net.Conn
+ // sysConn is a type alias of syscall.Conn. It's necessary because the name
+ // `Conn` collides with `net.Conn`.
+ sysConn
+}
+
+// WrapSyscallConn tries to wrap rawConn and newConn into a net.Conn that
+// implements syscall.Conn. rawConn will be used to support syscall, and newConn
+// will be used for read/write.
+//
+// This function returns newConn if rawConn doesn't implement syscall.Conn.
+func WrapSyscallConn(rawConn, newConn net.Conn) net.Conn {
+ sysConn, ok := rawConn.(syscall.Conn)
+ if !ok {
+ return newConn
+ }
+ return &syscallConn{
+ Conn: newConn,
+ sysConn: sysConn,
+ }
+}