Add a flag on controllers to configure resyncPeriod

This should allow advanced user/cluster-admin to configure the
resyncPeriod to a value that fit their cluster instead of relying on
the default 10h one.

This is related to #3676.

Signed-off-by: Vincent Demeester <[email protected]>

cmd/controller/main.go

@@ -21,6 +21,7 @@ import (
 	"log"
 	"net/http"
 	"os"
+	"time"
 
 	"github.com/tektoncd/pipeline/pkg/apis/pipeline"
 	"github.com/tektoncd/pipeline/pkg/apis/pipeline/v1beta1"
@@ -56,6 +57,7 @@ func main() {
 	flag.StringVar(&opts.Images.ShellImage, "shell-image", "", "The container image containing a shell")
 	flag.StringVar(&opts.Images.ShellImageWin, "shell-image-win", "", "The container image containing a windows shell")
 	flag.StringVar(&opts.Images.WorkingDirInitImage, "workingdirinit-image", "", "The container image containing our working dir init binary.")
+	flag.DurationVar(&opts.ResyncPeriod, "resync-period", controller.DefaultResyncPeriod, "The period between two resync run (going through all objects)")
 
 	// This parses flags.
 	cfg := injection.ParseAndGetRESTConfigOrDie()
@@ -98,6 +100,8 @@ func main() {
 	}()
 
 	ctx = filteredinformerfactory.WithSelectors(ctx, v1beta1.ManagedByLabelKey)
+	ctx = controller.WithResyncPeriod(ctx, opts.ResyncPeriod)
+
 	sharedmain.MainWithConfig(ctx, ControllerLogKey, cfg,
 		taskrun.NewController(opts, clock.RealClock{}),
 		pipelinerun.NewController(opts, clock.RealClock{}),

pkg/apis/pipeline/options.go

@@ -16,8 +16,11 @@ limitations under the License.
 
 package pipeline
 
+import "time"
+
 // Options holds options passed to the Tekton Pipeline controllers
 // typically via command-line flags.
 type Options struct {
-	Images Images
+	Images       Images
+	ResyncPeriod time.Duration
 }