513cebe7b7
* Add Virtual Kubelet provider for VIC Initial virtual kubelet provider for VMware VIC. This provider currently handles creating and starting of a pod VM via the VIC portlayer and persona server. Image store handling via the VIC persona server. This provider currently requires the feature/wolfpack branch of VIC. * Added pod stop and delete. Also added node capacity. Added the ability to stop and delete pod VMs via VIC. Also retrieve node capacity information from the VCH. * Cleanup and readme file Some file clean up and added a Readme.md markdown file for the VIC provider. * Cleaned up errors, added function comments, moved operation code 1. Cleaned up error handling. Set standard for creating errors. 2. Added method prototype comments for all interface functions. 3. Moved PodCreator, PodStarter, PodStopper, and PodDeleter to a new folder. * Add mocking code and unit tests for podcache, podcreator, and podstarter Used the unit test framework used in VIC to handle assertions in the provider's unit test. Mocking code generated using OSS project mockery, which is compatible with the testify assertion framework. * Vendored packages for the VIC provider Requires feature/wolfpack branch of VIC and a few specific commit sha of projects used within VIC. * Implementation of POD Stopper and Deleter unit tests (#4) * Updated files for initial PR
117 lines
3.0 KiB
Go
117 lines
3.0 KiB
Go
// Copyright 2017 VMware, Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package telnet
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import (
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"fmt"
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"io"
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"net"
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log "github.com/Sirupsen/logrus"
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)
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// DataHandlerFunc is the callback function in the event of receiving data from the telnet client
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type DataHandlerFunc func(w io.Writer, data []byte, tc *Conn)
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// CmdHandlerFunc is the callback function in the event of receiving a command from the telnet client
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type CmdHandlerFunc func(w io.Writer, cmd []byte, tc *Conn)
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// CloseHandlerFunc is the callback function in the event of receiving EOF from the telnet client
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type CloseHandlerFunc func(tc *Conn)
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var defaultDataHandlerFunc = func(w io.Writer, data []byte, tc *Conn) {}
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var defaultCmdHandlerFunc = func(w io.Writer, cmd []byte, tc *Conn) {}
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var defaultCloseHandlerFunc = func(tc *Conn) {}
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type Handlers struct {
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DataHandler DataHandlerFunc
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CmdHandler CmdHandlerFunc
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CloseHandler CloseHandlerFunc
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}
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// ServerOpts is the telnet server constructor options
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type ServerOpts struct {
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Addr string
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ServerOpts []byte
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ClientOpts []byte
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Handlers
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}
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// Server is the struct representing the telnet server
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type Server struct {
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ServerOptions map[byte]bool
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ClientOptions map[byte]bool
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Handlers
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ln net.Listener
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}
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// NewServer is the constructor of the telnet server
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func NewServer(opts ServerOpts) *Server {
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ts := new(Server)
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ts.ClientOptions = make(map[byte]bool)
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ts.ServerOptions = make(map[byte]bool)
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for _, v := range opts.ServerOpts {
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ts.ServerOptions[v] = true
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}
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for _, v := range opts.ClientOpts {
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ts.ClientOptions[v] = true
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}
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ts.DataHandler = defaultDataHandlerFunc
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if opts.DataHandler != nil {
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ts.DataHandler = opts.DataHandler
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}
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ts.CmdHandler = defaultCmdHandlerFunc
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if opts.CmdHandler != nil {
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ts.CmdHandler = opts.CmdHandler
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}
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ts.CloseHandler = defaultCloseHandlerFunc
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if opts.CloseHandler != nil {
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ts.CloseHandler = opts.CloseHandler
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}
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ln, err := net.Listen("tcp", opts.Addr)
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if err != nil {
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panic(fmt.Sprintf("cannot start telnet server: %v", err))
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}
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ts.ln = ln
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return ts
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}
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// Accept accepts a connection and returns the Telnet connection
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func (ts *Server) Accept() (*Conn, error) {
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// #nosec: Errors unhandled.
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conn, _ := ts.ln.Accept()
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log.Info("connection received")
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opts := connOpts{
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conn: conn,
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Handlers: ts.Handlers,
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clientOpts: ts.ClientOptions,
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fsm: newFSM(),
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}
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tc := newConn(&opts)
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go tc.writeLoop()
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go tc.dataHandlerWrapper(tc.handlerWriter, tc.dataRW)
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go tc.fsm.start()
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go tc.startNegotiation()
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return tc, nil
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}
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