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|
package main
import (
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
"os"
"os/exec"
"strings"
"time"
)
// TODO remove `configTemplate` once its usage has been replaced everywhere with VppConfig
const configTemplate = `unix {
nodaemon
log %[1]s/var/log/vpp/vpp.log
full-coredump
cli-listen %[1]s/var/run/vpp/cli.sock
runtime-dir %[1]s/var/run
gid vpp
}
api-trace {
on
}
api-segment {
gid vpp
}
socksvr {
socket-name %[1]s/var/run/vpp/api.sock
}
statseg {
socket-name %[1]s/var/run/vpp/stats.sock
}
plugins {
plugin default { disable }
plugin unittest_plugin.so { enable }
plugin quic_plugin.so { enable }
plugin af_packet_plugin.so { enable }
plugin hs_apps_plugin.so { enable }
plugin http_plugin.so { enable }
}
`
const vclTemplate = `vcl {
app-socket-api %[1]s/var/run/app_ns_sockets/%[2]s
app-scope-global
app-scope-local
namespace-id %[2]s
namespace-secret %[2]s
use-mq-eventfd
}
`
const NetworkTopologyDir string = "topo-network/"
const ContainerTopologyDir string = "topo-containers/"
type Stanza struct {
content string
pad int
}
type ActionResult struct {
Err error
Desc string
ErrOutput string
StdOutput string
}
type JsonResult struct {
Code int
Desc string
ErrOutput string
StdOutput string
}
func StartServerApp(running chan error, done chan struct{}, env []string) {
cmd := exec.Command("iperf3", "-4", "-s")
if env != nil {
cmd.Env = env
}
err := cmd.Start()
if err != nil {
msg := fmt.Errorf("failed to start iperf server: %v", err)
running <- msg
return
}
running <- nil
<-done
cmd.Process.Kill()
}
func StartClientApp(ipAddress string, env []string, clnCh chan error, clnRes chan string) {
defer func() {
clnCh <- nil
}()
nTries := 0
for {
cmd := exec.Command("iperf3", "-c", ipAddress, "-u", "-l", "1460", "-b", "10g")
if env != nil {
cmd.Env = env
}
o, err := cmd.CombinedOutput()
if err != nil {
if nTries > 5 {
clnCh <- fmt.Errorf("failed to start client app '%s'.\n%s", err, o)
return
}
time.Sleep(1 * time.Second)
nTries++
continue
} else {
clnRes <- fmt.Sprintf("Client output: %s", o)
}
break
}
}
func waitForSyncFile(fname string) (*JsonResult, error) {
var res JsonResult
for i := 0; i < 360; i++ {
f, err := os.Open(fname)
if err == nil {
defer f.Close()
data, err := ioutil.ReadFile(fname)
if err != nil {
return nil, fmt.Errorf("read error: %v", err)
}
err = json.Unmarshal(data, &res)
if err != nil {
return nil, fmt.Errorf("json unmarshal error: %v", err)
}
return &res, nil
}
time.Sleep(1 * time.Second)
}
return nil, fmt.Errorf("no sync file found")
}
func assertFileSize(f1, f2 string) error {
fi1, err := os.Stat(f1)
if err != nil {
return err
}
fi2, err1 := os.Stat(f2)
if err1 != nil {
return err1
}
if fi1.Size() != fi2.Size() {
return fmt.Errorf("file sizes differ (%d vs %d)", fi1.Size(), fi2.Size())
}
return nil
}
func startHttpServer(running chan struct{}, done chan struct{}, addressPort, netNs string) {
cmd := NewCommand([]string{"./http_server", addressPort}, netNs)
err := cmd.Start()
if err != nil {
fmt.Println("Failed to start http server")
return
}
running <- struct{}{}
<-done
cmd.Process.Kill()
}
func startWget(finished chan error, server_ip, port, query, netNs string) {
defer func() {
finished <- errors.New("wget error")
}()
cmd := NewCommand([]string{"wget", "--timeout=10", "--no-proxy", "--tries=5", "-O", "/dev/null", server_ip + ":" + port + "/" + query},
netNs)
o, err := cmd.CombinedOutput()
if err != nil {
finished <- fmt.Errorf("wget error: '%v\n\n%s'", err, o)
return
} else if strings.Contains(string(o), "200 OK") == false {
finished <- fmt.Errorf("wget error: response not 200 OK")
return
}
finished <- nil
}
func (c *Stanza) NewStanza(name string) *Stanza {
c.Append("\n" + name + " {")
c.pad += 2
return c
}
func (c *Stanza) Append(name string) *Stanza {
c.content += strings.Repeat(" ", c.pad)
c.content += name + "\n"
return c
}
func (c *Stanza) Close() *Stanza {
c.content += "}\n"
c.pad -= 2
return c
}
func (s *Stanza) ToString() string {
return s.content
}
func (s *Stanza) SaveToFile(fileName string) error {
fo, err := os.Create(fileName)
if err != nil {
return err
}
defer fo.Close()
_, err = io.Copy(fo, strings.NewReader(s.content))
return err
}
|
