version-updating script

misc/build_helpers/update-version.py

@@ -0,0 +1,96 @@
+#
+# this updates the (tagged) version of the software
+#
+# Any "options" are hard-coded in here (e.g. the GnuPG key to use)
+#
+
+author = "meejah <meejah@meejah.ca>"
+
+
+import sys
+import time
+import itertools
+from datetime import datetime
+from packaging.version import Version
+
+from dulwich.repo import Repo
+from dulwich.porcelain import (
+    tag_list,
+    tag_create,
+    status,
+)
+
+from twisted.internet.task import (
+    react,
+)
+from twisted.internet.defer import (
+    ensureDeferred,
+)
+
+
+def existing_tags(git):
+    versions = sorted(
+        Version(v.decode("utf8").lstrip("tahoe-lafs-"))
+        for v in tag_list(git)
+        if v.startswith(b"tahoe-lafs-")
+    )
+    return versions
+
+
+def create_new_version(git):
+    versions = existing_tags(git)
+    biggest = versions[-1]
+
+    return Version(
+        "{}.{}.{}".format(
+            biggest.major,
+            biggest.minor + 1,
+            0,
+        )
+    )
+
+
+async def main(reactor):
+    git = Repo(".")
+
+    st = status(git)
+    if any(st.staged.values()) or st.unstaged:
+        print("unclean checkout; aborting")
+        raise SystemExit(1)
+
+    v = create_new_version(git)
+    if "--no-tag" in sys.argv:
+        print(v)
+        return
+
+    print("Existing tags: {}".format("\n".join(str(x) for x in existing_tags(git))))
+    print("New tag will be {}".format(v))
+
+    # the "tag time" is seconds from the epoch .. we quantize these to
+    # the start of the day in question, in UTC.
+    now = datetime.now()
+    s = now.utctimetuple()
+    ts = int(
+        time.mktime(
+            time.struct_time((s.tm_year, s.tm_mon, s.tm_mday, 0, 0, 0, 0, s.tm_yday, 0))
+        )
+    )
+    tag_create(
+        repo=git,
+        tag="tahoe-lafs-{}".format(str(v)).encode("utf8"),
+        author=author.encode("utf8"),
+        message="Release {}".format(v).encode("utf8"),
+        annotated=True,
+        objectish=b"HEAD",
+        sign=author.encode("utf8"),
+        tag_time=ts,
+        tag_timezone=0,
+    )
+
+    print("Tag created locally, it is not pushed")
+    print("To push it run something like:")
+    print("   git push origin {}".format(v))
+
+
+if __name__ == "__main__":
+    react(lambda r: ensureDeferred(main(r)))