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engine: event: Switch events system to use simpler structs

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Pass around pointers of things now. Also, naming is vastly improved and
clearer.
This commit is contained in:
James Shubin
2019-01-12 14:27:36 -05:00
parent e20555d4bc
commit e2296a631b
5 changed files with 97 additions and 47 deletions
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6
engine/graph/actions.go
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@@ -347,7 +347,7 @@ func (obj *Engine) Worker(vertex pgraph.Vertex) error {
var limiter = rate.NewLimiter(res.MetaParams().Limit, res.MetaParams().Burst)
// It is important that we shutdown the Watch loop if this exits.
// Example, if Process errors permanently, we should ask Watch to exit.
defer obj.state[vertex].Event(event.EventExit) // signal an exit
defer obj.state[vertex].Event(event.Exit) // signal an exit
for {
select {
case err, ok := <-obj.state[vertex].outputChan: // read from watch channel
@@ -464,11 +464,11 @@ func (obj *Engine) Worker(vertex pgraph.Vertex) error {
// err = errwrap.Wrapf(err, "permanent process error")
//}
// If this exits, defer calls Event(event.EventExit),
// If this exits, defer calls: obj.Event(event.Exit),
// which will cause the Watch loop to shutdown. Also,
// if the Watch loop shuts down, that will cause this
// Process loop to shut down. Also the graph sync can
// run an Event(event.EventExit) which causes this to
// run an: obj.Event(event.Exit) which causes this to
// shutdown as well. Lastly, it is possible that more
// that one of these scenarios happens simultaneously.
return err