Files
mgmt/event.go
James Shubin f7858b8e9b Add state caching and invalidation to service type
This required a change in the event system to add an "activity" field.
This is meant to be generic in the case that there is more than one need
for it, but at the moment, allows a poke to tell that it is a poke in
response to an apply that just finished, instead of a regular poke or
backpoke in which all that matters is timestamp updates, because there
wasn't any actual work done (since that state was okay).
2016-01-15 00:02:45 -05:00

56 lines
1.7 KiB
Go

// Mgmt
// Copyright (C) 2013-2016+ James Shubin and the project contributors
// Written by James Shubin <james@shubin.ca> and the project contributors
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package main
//go:generate stringer -type=eventName -output=eventname_stringer.go
type eventName int
const (
eventExit eventName = iota
eventStart
eventPause
eventPoke
eventBackPoke
)
type Event struct {
Name eventName
Resp chan bool // channel to send an ack response on, nil to skip
//Wg *sync.WaitGroup // receiver barrier to Wait() for everyone else on
Msg string // some words for fun
Activity bool // did something interesting happen?
}
// send a single acknowledgement on the channel if one was requested
func (event *Event) ACK() {
if event.Resp != nil { // if they've requested an ACK
event.Resp <- true // send ACK
}
}
func (event *Event) NACK() {
if event.Resp != nil { // if they've requested an ACK
event.Resp <- false // send NACK
}
}
// get the activity value
func (event *Event) GetActivity() bool {
return event.Activity
}