Support both old and new versions of pyjwt

Pyjwt 2.0 made some incompatible changes in how a signature is verified,
so we need to support both the old and the new one.

For cleanliness, create a util/versionutil.py that wraps these version
specific things. There are clearly more.

1 files changed, 9 insertions, 0 deletions

diff --git a/postgresqleu/util/versionutil.py b/postgresqleu/util/versionutil.py
new file mode 100644
index 00000000..24f17e21
--- /dev/null
+++ b/postgresqleu/util/versionutil.py
@@ -0,0 +1,9 @@
+# Generic wrappers to handle backwards incompatible changes in dependencies
+import jwt
+
+
+def decode_unverified_jwt(j):
+    if jwt.__version__ > 2:
+        return jwt.decode(j, options={'verify_signature': False})
+    else:
+        return jwt.decode(j, verify=False)