/
pause.go
58 lines (52 loc) · 1.13 KB
/
pause.go
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package app
import (
"context"
"github.com/target/goalert/switchover"
"github.com/target/goalert/util/log"
"net/http"
"go.opencensus.io/trace"
)
func (app *App) pauseHandler(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
ctx := req.Context()
err := app.requestLock.RLock(ctx)
if err != nil {
log.Log(ctx, err)
return
}
defer app.requestLock.RUnlock()
next.ServeHTTP(w, req)
})
}
func (app *App) Pause(ctx context.Context) error {
ctx, sp := trace.StartSpan(ctx, "App.Pause")
defer sp.End()
err := app.mgr.Pause(ctx)
if err != nil {
return err
}
app.db.SetMaxIdleConns(0)
return nil
}
func (app *App) Resume() {
app.db.SetMaxIdleConns(app.cfg.DBMaxIdle)
app.mgr.Resume(context.Background())
}
func (app *App) _pause(ctx context.Context) error {
app.events.Stop()
cfg := switchover.ConfigFromContext(ctx)
if cfg.NoPauseAPI {
return nil
}
err := app.requestLock.Lock(ctx)
if err != nil {
app.events.Start()
return err
}
return nil
}
func (app *App) _resume(ctx context.Context) error {
app.events.Start()
app.requestLock.Unlock()
return nil
}