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fix strange bug where ReturnStateBuf.Reader isn't closed, even when process exits. Force it closed after 2 seconds

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This commit is contained in:
sawka 2023-11-09 18:57:39 -08:00
parent d61c8c05a6
commit 089553fce2
1 changed files with 9 additions and 1 deletions
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10
waveshell/pkg/shexec/shexec.go
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@ -48,6 +48,8 @@ const MaxRunDataSize = 1024 * 1024
const MaxTotalRunDataSize = 10 * MaxRunDataSize
const ShellVarName = "SHELL"
const SigKillWaitTime = 2 * time.Second
const RtnStateFdNum = 20
const ReturnStateReadWaitTime = 2 * time.Second
const GetStateTimeout = 5 * time.Second
@ -1097,7 +1099,7 @@ func RunCommandSimple(pk *packet.RunPacketType, sender *packet.PacketSender, fro
}
cmd.ReturnState = MakeReturnStateBuf()
cmd.ReturnState.Reader = pr
cmd.ReturnState.FdNum = 20
cmd.ReturnState.FdNum = RtnStateFdNum
rtnStateWriter = pw
defer pw.Close()
trapCmdStr := makeExitTrap(cmd.ReturnState.FdNum)
@ -1440,6 +1442,12 @@ func (c *ShExecType) WaitForCommand() *packet.CmdDonePacketType {
donePacket := packet.MakeCmdDonePacket(c.CK)
exitErr := c.ProcWait()
if c.ReturnState != nil {
// processing ReturnState *should* be fast. strange bug while running [[[ eval $(ssh-agent -s) ]]]
// where the process exits, but the ReturnState.Reader does not return EOF! Limit this to 2 seconds
go func() {
time.Sleep(ReturnStateReadWaitTime)
c.ReturnState.Reader.Close()
}()
<-c.ReturnState.DoneCh
state, _ := ParseShellStateOutput(c.ReturnState.Buf) // TODO what to do with error?
donePacket.FinalState = state