func (cmd *cmdDump) Main() {
from, output := args.from, args.output
if len(from) == 0 {
log.Panic("invalid argument: from")
}
if len(output) == 0 {
output = "/dev/stdout"
}
log.Infof("dump from '%s' to '%s'\n", from, output)
var dumpto io.WriteCloser
if output != "/dev/stdout" {
dumpto = openWriteFile(output)
defer dumpto.Close()
} else {
dumpto = os.Stdout
}
master, nsize := cmd.SendCmd(from)
defer master.Close()
log.Infof("rdb file = %d\n", nsize)
reader := bufio.NewReaderSize(master, ReaderBufferSize)
writer := bufio.NewWriterSize(ioutils.NewCountWriter(dumpto, &cmd.ndump), WriterBufferSize)
cmd.DumpRDBFile(reader, writer, nsize)
if !args.extra {
return
}
cmd.DumpCommand(reader, writer)
}
func (cmd *cmdDecode) Main() {
input, output := args.input, args.output
if len(input) == 0 {
input = "/dev/stdin"
}
if len(output) == 0 {
output = "/dev/stdout"
}
log.Infof("decode from '%s' to '%s'\n", input, output)
var readin io.ReadCloser
var nsize int64
if input != "/dev/stdin" {
readin, nsize = openReadFile(input)
defer readin.Close()
} else {
readin, nsize = os.Stdin, 0
}
var saveto io.WriteCloser
if output != "/dev/stdout" {
saveto = openWriteFile(output)
defer saveto.Close()
} else {
saveto = os.Stdout
}
reader := bufio.NewReaderSize(ioutils.NewCountReader(readin, &cmd.nread), ReaderBufferSize)
writer := bufio.NewWriterSize(ioutils.NewCountWriter(saveto, &cmd.nsave), WriterBufferSize)
ipipe := newRDBLoader(reader, args.parallel*32)
opipe := make(chan string, cap(ipipe))
go func() {
defer close(opipe)
group := make(chan int, args.parallel)
for i := 0; i < cap(group); i++ {
go func() {
defer func() {
group <- 0
}()
cmd.decoderMain(ipipe, opipe)
}()
}
for i := 0; i < cap(group); i++ {
<-group
}
}()
wait := make(chan struct{})
go func() {
defer close(wait)
for s := range opipe {
if _, err := writer.WriteString(s); err != nil {
log.PanicError(err, "write string failed")
}
flushWriter(writer)
}
}()
for done := false; !done; {
select {
case <-wait:
done = true
case <-time.After(time.Second):
}
n, w, o := cmd.nread.Get(), cmd.nsave.Get(), cmd.nobjs.Get()
if nsize != 0 {
p := 100 * n / nsize
log.Infof("total = %d - %12d [%3d%%] write=%-12d objs=%d\n", nsize, n, p, w, o)
} else {
log.Infof("total = %12d write=%-12d objs=%d\n", n, w, o)
}
}
log.Info("done")
}