Add TCP Dial RPC client creation to DryadClient

The Create function implements ClientManager interface.
It sets up a new TCP dialled RPC client in DryadClient structure.

The connection created this way will be used for managing Dryad
(key generation, putting in maintenance state, preparation).

Change-Id: I2d9c48d05f65e38b49aa6fe7ded10e324248f84e
Signed-off-by: Lukasz Wojciechowski <l.wojciechow@partner.samsung.com>

diff --git a/rpc/dryad/tcpdial.go b/rpc/dryad/tcpdial.go
new file mode 100644 (file)
index 0000000..8d5bfa1
--- /dev/null
+++ b/rpc/dryad/tcpdial.go
@@ -0,0 +1,37 @@
+/*
+ *  Copyright (c) 2018 Samsung Electronics Co., Ltd All Rights Reserved
+ *
+ *  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
+ */
+
+// File rpc/dryad/tcpdial.go contains implementation of creating an RPC
+// client inside DryadClient using TCP dial.
+
+package dryad
+
+import (
+       "net"
+       "net/rpc"
+)
+
+// Create sets up new TCP dialled RPC client in DryadClient structure.
+// The Create function implements ClientManager interface.
+func (_c *DryadClient) Create(ip net.IP, port int) error {
+       addr := &net.TCPAddr{IP: ip, Port: port}
+       conn, err := net.DialTCP("tcp", nil, addr)
+       if err != nil {
+               return err
+       }
+       _c.client = rpc.NewClient(conn)
+       return nil
+}