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Queue: Make WorkerPools and Queues flushable (#10001)

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* Make WorkerPools and Queues flushable

Adds Flush methods to Queues and the WorkerPool
Further abstracts the WorkerPool
Adds a final step to Flush the queues in the defer from PrintCurrentTest
Fixes an issue with Settings inheritance in queues

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Change to for loop

* Add IsEmpty and begin just making the queues composed WorkerPools

* subsume workerpool into the queues and create a flushable interface

* Add manager command

* Move flushall to queue.Manager and add to testlogger

* As per @guillep2k

* as per @guillep2k

* Just make queues all implement flushable and clean up the wrapped queue flushes

* cope with no timeout

Co-authored-by: Lauris BH <lauris@nix.lv>
This commit is contained in:
zeripath
2020-01-29 01:01:06 +00:00
committed by GitHub
parent 7c84dbca4f
commit c01221e70f
27 changed files with 1030 additions and 327 deletions
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33
modules/graceful/manager_windows.go
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@@ -43,6 +43,7 @@ type Manager struct {
runningServerWaitGroup sync.WaitGroup
createServerWaitGroup sync.WaitGroup
terminateWaitGroup sync.WaitGroup
shutdownRequested chan struct{}
}
func newGracefulManager(ctx context.Context) *Manager {
@@ -62,6 +63,7 @@ func (g *Manager) start() {
g.shutdown = make(chan struct{})
g.hammer = make(chan struct{})
g.done = make(chan struct{})
g.shutdownRequested = make(chan struct{})
// Set the running state
g.setState(stateRunning)
@@ -107,7 +109,10 @@ loop:
for {
select {
case <-g.ctx.Done():
g.doShutdown()
g.DoGracefulShutdown()
waitTime += setting.GracefulHammerTime
break loop
case <-g.shutdownRequested:
waitTime += setting.GracefulHammerTime
break loop
case change := <-changes:
@@ -115,12 +120,12 @@ loop:
case svc.Interrogate:
status <- change.CurrentStatus
case svc.Stop, svc.Shutdown:
g.doShutdown()
g.DoGracefulShutdown()
waitTime += setting.GracefulHammerTime
break loop
case hammerCode:
g.doShutdown()
g.doHammerTime(0 * time.Second)
g.DoGracefulShutdown()
g.DoImmediateHammer()
break loop
default:
log.Debug("Unexpected control request: %v", change.Cmd)
@@ -140,7 +145,7 @@ hammerLoop:
case svc.Interrogate:
status <- change.CurrentStatus
case svc.Stop, svc.Shutdown, hammerCmd:
g.doHammerTime(0 * time.Second)
g.DoImmediateHammer()
break hammerLoop
default:
log.Debug("Unexpected control request: %v", change.Cmd)
@@ -152,6 +157,24 @@ hammerLoop:
return false, 0
}
// DoImmediateHammer causes an immediate hammer
func (g *Manager) DoImmediateHammer() {
g.doHammerTime(0 * time.Second)
}
// DoGracefulShutdown causes a graceful shutdown
func (g *Manager) DoGracefulShutdown() {
g.lock.Lock()
select {
case <-g.shutdownRequested:
g.lock.Unlock()
default:
close(g.shutdownRequested)
g.lock.Unlock()
g.doShutdown()
}
}
// RegisterServer registers the running of a listening server.
// Any call to RegisterServer must be matched by a call to ServerDone
func (g *Manager) RegisterServer() {