commitmeta_to_json

#!/usr/bin/python3 -u
# DO NOT CONVERT ABOVE LINE TO /usr/bin/env
# Need to use system python here because the SCL in EL7 doesn't have
# gobject so we can't 'import gi' below.

import argparse
import gi
import sys

gi.require_version('OSTree', '1.0')
gi.require_version('Json', '1.0')
from gi.repository import Gio, OSTree, Json

parser = argparse.ArgumentParser()
parser.add_argument("repo", help="OSTree repo")
parser.add_argument("rev", help="Revision to inspect")
args = parser.parse_args()

r = OSTree.Repo.new(Gio.File.new_for_path(args.repo))
r.open(None)

[_, rev] = r.resolve_rev(args.rev, True)
[_, commit, _] = r.load_commit(rev)
commitmeta = commit.get_child_value(0)
if sys.byteorder != 'big':
    commitmeta = commitmeta.byteswap()

g = Json.Generator.new()
g.set_root(Json.gvariant_serialize(commitmeta))
stdout = Gio.UnixOutputStream.new(sys.stdout.fileno(), False)
g.set_pretty(True)
g.to_stream(stdout)