func TestCommandLinesPipe(t *testing.T) {
stretcher.Init()
var buf bytes.Buffer
for i := 0; i < 10; i++ {
buf.WriteString(fmt.Sprintf("foo%d\n", i))
}
toWrite := buf.Bytes()
cmdlines := stretcher.CommandLines{
stretcher.CommandLine("cat > test/tmp/cmdoutput"),
stretcher.CommandLine("cat"),
stretcher.CommandLine("echo ok"),
}
defer os.Remove("test/tmp/cmdoutput")
err := cmdlines.InvokePipe(&buf)
if err != nil {
t.Error(err)
}
wrote, err := ioutil.ReadFile("test/tmp/cmdoutput")
if err != nil {
t.Error(err)
}
if bytes.Compare(toWrite, wrote) != 0 {
t.Error("unexpected wrote data", wrote)
}
}
func main() {
var (
showVersion bool
)
flag.BoolVar(&showVersion, "v", false, "show version")
flag.BoolVar(&showVersion, "version", false, "show version")
flag.Parse()
if showVersion {
fmt.Println("version:", version)
fmt.Println("build:", buildDate)
checkLatest(version)
return
}
log.Println("stretcher version:", version)
stretcher.Init()
err := stretcher.Run()
if err != nil {
log.Println(err)
if os.Getenv("CONSUL_INDEX") != "" {
// ensure exit 0 when running under `consul watch`
return
} else {
os.Exit(1)
}
}
}
func TestInitSleep(t *testing.T) {
sleep := time.Duration(1 * time.Second)
start := time.Now()
stretcher.Init(sleep)
end := time.Now()
diff := end.Sub(start)
if diff < sleep {
t.Errorf("sleeping time is not enough. expected at least %s, but returned in %s", sleep, diff)
}
}
func TestCommandLines(t *testing.T) {
stretcher.Init()
now := time.Now()
ymd := now.Format("20060102")
hm := now.Format("1504")
cmdlines := stretcher.CommandLines{
stretcher.CommandLine("date +%Y%m%d"),
stretcher.CommandLine("date +%H%M"),
}
cmdlines.Invoke()
output := stretcher.LogBuffer.String()
if strings.Index(output, ymd) == -1 {
t.Error("invalid output", output)
}
if strings.Index(output, hm) == -1 {
t.Error("invalid output", output)
}
}
func TestCommandLinesPipeIgnoreEPIPE(t *testing.T) {
stretcher.Init(0)
var buf bytes.Buffer
for i := 0; i < 1025; i++ {
buf.WriteString("0123456789012345678901234567890123456789012345678901234567890123") // 64 bytes
}
cmdlines := stretcher.CommandLines{
stretcher.CommandLine("echo ok"),
}
err := cmdlines.InvokePipe(&buf)
if err != nil {
t.Error(err)
}
if strings.Index(stretcher.LogBuffer.String(), "broken pipe") != -1 {
t.Error("broken pipe was occuered")
}
}
func TestCommandLinesFail(t *testing.T) {
stretcher.Init()
cmdlines := stretcher.CommandLines{
stretcher.CommandLine("echo 'FOO'; echo 'BAR' 2>&1; false"),
}
err := cmdlines.Invoke()
if err == nil {
t.Error("false command must fail")
}
if fmt.Sprintf("%s", err) != "failed: echo 'FOO'; echo 'BAR' 2>&1; false exit status 1" {
t.Error("invalid err message.", err)
}
output := string(stretcher.LogBuffer.Bytes())
if !strings.Contains(output, "FOO\n") {
t.Error("output does not contain FOO\\n")
}
if !strings.Contains(output, "BAR\n") {
t.Error("output does not contain BAR\\n")
}
}
func main() {
var (
showVersion bool
delay float64
sleep time.Duration
)
flag.BoolVar(&showVersion, "v", false, "show version")
flag.BoolVar(&showVersion, "version", false, "show version")
flag.Float64Var(&delay, "random-delay", 0, "sleep [0,random-delay) sec on start")
flag.Parse()
if showVersion {
fmt.Println("version:", version)
fmt.Println("build:", buildDate)
checkLatest(version)
return
}
log.Println("stretcher version:", version)
if delay > 0 {
n, err := rand.Int(rand.Reader, big.NewInt(int64(delay*1000)))
if err != nil {
panic(err)
}
sleep, _ = time.ParseDuration(fmt.Sprintf("%dms", n.Int64()))
}
stretcher.Version = version
stretcher.Init(sleep)
err := stretcher.Run()
if err != nil {
log.Println(err)
if os.Getenv("CONSUL_INDEX") != "" {
// ensure exit 0 when running under `consul watch`
return
} else {
os.Exit(1)
}
}
}