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package process
import (
"context"
"fmt"
"sync"
"github.com/getsentry/sentry-go"
"github.com/sirupsen/logrus"
"go.uber.org/atomic"
)
type ProcessContext struct {
wg *sync.WaitGroup // used to wait for components to shutdown
ctx context.Context // cancelled when Stop is called
shutdown context.CancelFunc // shut down Dendrite
degraded atomic.Bool
}
func NewProcessContext() *ProcessContext {
ctx, shutdown := context.WithCancel(context.Background())
return &ProcessContext{
ctx: ctx,
shutdown: shutdown,
wg: &sync.WaitGroup{},
}
}
func (b *ProcessContext) Context() context.Context {
return context.WithValue(b.ctx, "scope", "process") // nolint:staticcheck
}
func (b *ProcessContext) ComponentStarted() {
b.wg.Add(1)
}
func (b *ProcessContext) ComponentFinished() {
b.wg.Done()
}
func (b *ProcessContext) ShutdownDendrite() {
b.shutdown()
}
func (b *ProcessContext) WaitForShutdown() <-chan struct{} {
return b.ctx.Done()
}
func (b *ProcessContext) WaitForComponentsToFinish() {
b.wg.Wait()
}
func (b *ProcessContext) Degraded() {
if b.degraded.CAS(false, true) {
logrus.Warn("Dendrite is running in a degraded state")
sentry.CaptureException(fmt.Errorf("Process is running in a degraded state"))
}
}
func (b *ProcessContext) IsDegraded() bool {
return b.degraded.Load()
}
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