// A valid rule could be a pre-existing one created using the now deprecated PutBucketLifecycle.
	// Or, a valid rule could also be either a pre-existing or a new rule that is created using PutBucketLifecycleConfiguration.
	// Prefix validation below may check that either Rule.Prefix or Rule.Filter.Prefix exist but not both.
	// Here, we assume the pre-existing rule created using PutBucketLifecycle API is already valid and won't fail the validation if Rule.Prefix is empty.

	ctx := newContext(r, w, "PutBucketLifecycle")

	defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))

	objAPI := api.ObjectAPI()
	if objAPI == nil {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
		return
	}

	vars := mux.Vars(r)
	bucket := vars["bucket"]

	// PutBucketLifecycle always needs a Content-Md5
	if !validateLengthAndChecksum(r) {