From 721def4eb06acf6e7c2accf2d7201541f0819d71 Mon Sep 17 00:00:00 2001
From: Joshua Lock <jlock@vmware.com>
Date: Tue, 30 Jun 2020 13:55:27 +0100
Subject: [PATCH] tuf.api: add helpers to bump version and expiration

Signed-off-by: Joshua Lock <jlock@vmware.com>
---
 tuf/api/metadata.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tuf/api/metadata.py b/tuf/api/metadata.py
index 68011925..6eb27709 100644
--- a/tuf/api/metadata.py
+++ b/tuf/api/metadata.py
@@ -69,6 +69,12 @@ def signable(self) -> JsonDict:
         """
         raise NotImplementedError()
 
+    def bump_version(self) -> None:
+        self.version = self.version + 1
+
+    def bump_expiration(self, delta: relativedelta = relativedelta(days=1)) -> None:
+        self.expiration = self.expiration + delta
+
     def signed(self) -> str:
         return encode_canonical(self.signable['signed']).encode('utf-8')