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controlmsgpipe.go
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controlmsgpipe.go
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package controlmsg
import (
"netcola/library/logger"
)
type ControlMsgPipe struct {
Cmd chan *ControlMsg
Echo chan *ControlMsg
}
func NewControlMsgPipe() *ControlMsgPipe {
new := &ControlMsgPipe{}
new.Cmd = make(chan *ControlMsg)
new.Echo = make(chan *ControlMsg)
return new
}
func (p *ControlMsgPipe) CloseControlMsgPipe() {
close(p.Cmd)
close(p.Echo)
}
func (p *ControlMsgPipe) ReadEchoNoBlock() (*ControlMsg, bool) {
var msg *ControlMsg = nil
select {
case msg = <-p.Echo:
return msg, true
default:
}
return nil, false
}
func (p *ControlMsgPipe) WriteEchoNoBlock(msg *ControlMsg) bool {
select {
case p.Echo <- msg:
return true
default:
}
return false
}
func (p *ControlMsgPipe) ReadCmdNoBlock() (*ControlMsg, bool) {
var msg *ControlMsg = nil
select {
case msg = <-p.Cmd:
return msg, true
default:
}
return nil, false
}
func (p *ControlMsgPipe) WriteCmdNoBlock(msg *ControlMsg) bool {
select {
case p.Cmd <- msg:
return true
default:
}
return false
}
func (t *ControlMsgPipe) SysControlEntry(serviceName string, msg *ControlMsg) (int, int) {
switch msg.MsgType {
case ControlMsgExit:
logger.Info("%s:ControlMsgPipe.Cmd Read %d", serviceName, msg.MsgType)
t.Echo <- &ControlMsg{MsgType: ControlMsgExit}
logger.Info("%s:exit", serviceName)
return NextActionReturn, ProcessStatOK
case ControlMsgPause:
logger.Info("%s:paused", serviceName)
t.Echo <- &ControlMsg{MsgType: ControlMsgPause}
for {
var resume bool = false
select {
case msg, ok := <-t.Cmd:
if !ok {
logger.Info("%s:Cmd Read error", serviceName)
break
}
switch msg.MsgType {
case ControlMsgResume:
t.Echo <- &ControlMsg{MsgType: ControlMsgResume}
resume = true
break
}
}
if resume {
break
}
}
logger.Info("%s:resumed", serviceName)
default:
return NextActionContinue, ProcessStatIgnore
}
return NextActionContinue, ProcessStatOK
}