@@ -50,6 +50,12 @@ def get_details(args):

                 ack = f"{reviewer_name} <{reviewer_mail}>"

                 print(f"Acked-by: {ack}")

                 acked_by.append(ack)

+    # construct Signed-off-by in case it is missing

+    owner = json_data["owner"]

+    owner_name = owner.get("display_name", owner["name"])

+    owner_mail = owner.get("email", owner["name"])

+    sign_off = f"{owner_name} <{owner_mail}>"

+    print(f"Signed-off-by: {sign_off}")

     change_id = json_data["change_id"]

     # assumes that the created date in Gerrit is in UTC

     utc_stamp = (

@@ -67,6 +73,7 @@ def get_details(args):

         "target": json_data["branch"],

         "msg_id": msg_id,

         "acked_by": acked_by,

+        "sign_off": sign_off,

     }

@@ -81,10 +88,14 @@ def get_patch(details, args):

 def apply_patch_mods(patch_text, details, args):

     comment_start = patch_text.index("\n---\n") + len("\n---\n")

+    signed_off_text = ""

+    signed_off_comment = ""

     try:

         signed_off_start = patch_text.rindex("\nSigned-off-by: ")

         signed_off_end = patch_text.index("\n", signed_off_start + 1) + 1

     except ValueError:  # Signed-off missing

+        signed_off_text = f"Signed-off-by: {details['sign_off']}\n"

+        signed_off_comment = "\nSigned-off-by line for the author was added as per our policy.\n"

         signed_off_end = patch_text.index("\n---\n") + 1

     assert comment_start > signed_off_end

     acked_by_text = ""

@@ -94,6 +105,7 @@ def apply_patch_mods(patch_text, details, args):

         acked_by_names += f"{ack}\n"

     patch_text_mod = (

         patch_text[:signed_off_end]

+        + signed_off_text

         + acked_by_text

         + patch_text[signed_off_end:comment_start]

         + f"""

@@ -102,6 +114,7 @@ developer. I request to merge it to {details["target"]}.

 Gerrit URL: {args.url}/c/{details["project"]}/+/{args.changeid}

 This mail reflects revision {details["revision"]} of this Change.

+{signed_off_comment}

 Acked-by according to Gerrit (reflected above):

 {acked_by_names}

         """