add timezone stage

stages/org.osbuild.timezone

@@ -0,0 +1,30 @@
+#!/usr/bin/python3
+
+import json
+import subprocess
+import sys
+import os
+
+
+def main(tree, options):
+    zone = options["zone"]
+
+    # We need to remove the /etc/localtime symlink first, because it is created while we install RPM packages.
+    # systemd-firstboot expects that if /etc/localtime exists it is a user-defined value and does not change it, but
+    # the assumption is wrong, because it contains a default value from RPM package.
+    # This is (hopefully) a temporary workaround.
+    try:
+        os.remove(f"{tree}/etc/localtime")
+        # ^ This will fail once systemd RPM package stops shipping the file
+    except FileNotFoundError:
+        print("systemd does not ship /etc/localtime anymore. Remove the workaround")
+
+    subprocess.run(["systemd-firstboot", f"--root={tree}", f"--timezone={zone}"], check=True)
+
+    return 0
+
+
+if __name__ == '__main__':
+    args = json.load(sys.stdin)
+    r = main(args["tree"], args["options"])
+    sys.exit(r)

test/run-tests.py

@@ -66,14 +66,35 @@ def test_web_server():
     assert curl.stdout.decode("utf-8").strip() == "hello, world!"
 
 
+def build_timezone_image():
+    run_osbuild(rel_path("timezone-test.json"))
+
+
+def test_timezone():
+    extract_dir = tempfile.mkdtemp(prefix="osbuild-")
+    subprocess.run(["tar", "xf", OUTPUT_DIR + "/timezone-output.tar.xz"], cwd=extract_dir, check=True)
+    ls = subprocess.run(["ls", "-l", "etc/localtime"], cwd=extract_dir, check=True, stdout=subprocess.PIPE)
+    ls_output = ls.stdout.decode("utf-8")
+    assert "Europe/Prague" in ls_output
+
+
+def evaluate_test(test):
+    try:
+        test()
+        print(f"{RESET}{BOLD}{test.__name__}: Success{RESET}")
+    except AssertionError as e:
+        print(f"{RESET}{BOLD}{test.__name__}: {RESET}{RED}Fail{RESET}")
+        print(e)
+
+
 if __name__ == '__main__':
     logging.info("Running tests")
+    build_web_server_image()
     tests = [test_web_server]
     with boot_image(IMAGE_PATH):
         for test in tests:
-            try:
-                test()
-                print(f"{RESET}{BOLD}{test.__name__}: Success{RESET}")
-            except AssertionError as e:
-                print(f"{RESET}{BOLD}{test.__name__}: {RESET}{RED}Fail{RESET}")
-                print(e)
+            evaluate_test(test)
+
+    build_timezone_image()
+    evaluate_test(test_timezone)
+

test/timezone-test.json

@@ -0,0 +1,32 @@
+{
+  "name": "Example Image",
+  "stages": [
+    {
+      "name": "org.osbuild.dnf",
+      "options": {
+        "releasever": "30",
+        "repos": {
+          "fedora": {
+            "name": "Fedora",
+            "metalink": "https://mirrors.fedoraproject.org/metalink?repo=fedora-$releasever&arch=$basearch",
+            "gpgkey": "file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$releasever-$basearch"
+          }
+        },
+        "packages": ["@Core"]
+	}
+    },
+    {
+      "name": "org.osbuild.timezone",
+      "options": {
+        "zone": "Europe/Prague"
+      }
+    }
+  ],
+  "assembler": {
+    "name": "org.osbuild.tar",
+    "options": {
+      "filename": "timezone-output.tar.xz",
+      "compression": "xz"
+    }
+  }
+}