Configurable default replay cache path for remote ssh devices (#2414)

core/os/device/remotessh/device.go

@@ -47,6 +47,8 @@ type Device interface {
 	MakeTempDir(ctx context.Context) (string, func(ctx context.Context), error)
 	// WriteFile writes the given file into the given location on the remote device
 	WriteFile(ctx context.Context, contents io.Reader, mode os.FileMode, destPath string) error
+	// DefaultReplayCacheDir returns the default path for replay resource caches
+	DefaultReplayCacheDir() string
 }
 
 // MaxNumberOfSSHConnections defines the max number of ssh connections to each
@@ -279,3 +281,8 @@ func GetConnectedDevice(ctx context.Context, c Configuration) (Device, error) {
 
 	return b, nil
 }
+
+// DefaultReplayCacheDir implements Device interface
+func (b *binding) DefaultReplayCacheDir() string {
+	return ""
+}

gapir/client/session.go

@@ -118,6 +118,10 @@ func (s *session) newRemote(ctx context.Context, d remotessh.Device, abi *device
 	args = append(args, launchArgs...)
 	if forceEnableDiskCache {
 		args = append(args, "--enable-disk-cache")
+		if len(d.DefaultReplayCacheDir()) > 0 {
+			args = append(args, "--disk-cache-path", d.DefaultReplayCacheDir())
+		}
+		args = append(args, "--cleanup-on-disk-cache")
 	}
 
 	gapir, err := layout.Gapir(ctx, abi)