feat: observe changes in repository to automatically clear cache

internal/command/server/proxy/run.go

@@ -11,6 +11,7 @@ import (
 	"forge.cadoles.com/cadoles/bouncer/internal/command/common"
 	"forge.cadoles.com/cadoles/bouncer/internal/proxy"
 	"forge.cadoles.com/cadoles/bouncer/internal/setup"
+	"forge.cadoles.com/cadoles/bouncer/internal/store"
 	"github.com/pkg/errors"
 	"github.com/urfave/cli/v2"
 	"gitlab.com/wpetit/goweb/logger"
@@ -72,6 +73,22 @@ func RunCommand() *cli.Command {
 
 			addrs, srvErrs := srv.Start(ctx.Context)
 
+			if observableProxyRepository, ok := proxyRepository.(store.Observable); ok {
+				logger.Info(ctx.Context, "observing proxy repository changes")
+				observableProxyRepository.Changes(ctx.Context, func(c store.Change) {
+					logger.Info(ctx.Context, "proxy change detected, clearing cache")
+					srv.ClearProxyCache()
+				})
+			}
+
+			if observableLayerRepository, ok := layerRepository.(store.Observable); ok {
+				logger.Info(ctx.Context, "observing layer repository changes")
+				observableLayerRepository.Changes(ctx.Context, func(c store.Change) {
+					logger.Info(ctx.Context, "layer change detected, clearing cache")
+					srv.ClearLayerCache()
+				})
+			}
+
 			// Clear director's cache on SIGUSR2
 			sig := make(chan os.Signal, 1)
 			signal.Notify(sig, syscall.SIGUSR2)
@@ -80,8 +97,9 @@ func RunCommand() *cli.Command {
 				for {
 					select {
 					case <-sig:
-						logger.Info(ctx.Context, "received sigusr2, clearing cache")
-						srv.ClearCache()
+						logger.Info(ctx.Context, "received sigusr2, clearing whole cache")
+						srv.ClearProxyCache()
+						srv.ClearLayerCache()
 					case <-ctx.Context.Done():
 						return
 					}