test: add HTTP upload test for systemd-report

Add a fake HTTP server (fake-report-server.py) that accepts JSON POST
requests and validates the report structure, and test cases in
TEST-74-AUX-UTILS.report.sh that exercise plain HTTP upload of both
metrics and facts.

Co-developed-by: Claude Opus 4.6 <noreply@anthropic.com>

mkosi/mkosi.sanitizers/mkosi.postinst

@@ -45,6 +45,7 @@ wrap=(
     /usr/lib/systemd/tests/testdata/TEST-74-AUX-UTILS.units/proxy-echo.py
     /usr/libexec/polkit-1/polkitd
     /usr/lib/systemd/tests/integration-tests/TEST-74-AUX-UTILS/TEST-74-AUX-UTILS.units/fake-imds.py
+    /usr/lib/systemd/tests/integration-tests/TEST-74-AUX-UTILS/TEST-74-AUX-UTILS.units/fake-report-server.py
     agetty
     btrfs
     capsh

test/integration-tests/TEST-74-AUX-UTILS/TEST-74-AUX-UTILS.units/fake-report-server.py

@@ -0,0 +1,56 @@
+#!/usr/bin/python3
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+import json, os, socket
+from http.server import BaseHTTPRequestHandler, HTTPServer
+
+def sd_notify(state: str) -> bool:
+    notify_socket = os.environ.get("NOTIFY_SOCKET")
+    if not notify_socket:
+        return False
+    if notify_socket.startswith("@"):
+        notify_socket = "\0" + notify_socket[1:]
+    try:
+        with socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM) as sock:
+            sock.sendto(state.encode(), notify_socket)
+    except OSError:
+        return False
+    return True
+
+class Handler(BaseHTTPRequestHandler):
+    def do_POST(self):
+        length = int(self.headers.get("Content-Length", 0))
+        body = self.rfile.read(length)
+
+        # Validate JSON structure
+        try:
+            data = json.loads(body)
+        except json.JSONDecodeError:
+            self.send_error(400, "Invalid JSON")
+            return
+
+        print(f"JSON: {s if len(s := str(data)) < 80 else s[:40] + '…' + s[-40:]}")
+
+        if "metrics" not in data and "facts" not in data:
+            self.send_error(400, "Missing 'metrics' or 'facts' field")
+            return
+
+        response = json.dumps({"status": "ok"}).encode()
+        self.send_response(200)
+        self.send_header("Content-Type", "application/json")
+        self.send_header("Content-Length", len(response))
+        self.end_headers()
+        self.wfile.write(response)
+
+    def log_message(self, fmt, *args):
+        print(f"{self.address_string()} - {fmt % args}")
+
+PORT = 8089
+
+server = HTTPServer(("", PORT), Handler)
+print(f"Serving on http://localhost:{PORT}/")
+try:
+    sd_notify("READY=1")
+    server.serve_forever()
+except KeyboardInterrupt:
+    print("\nStopped.")

test/units/TEST-74-AUX-UTILS.report.sh

@@ -65,3 +65,17 @@ systemctl start systemd-report-basic.socket
 # Test facts via direct Varlink call on existing socket
 varlinkctl --more call /run/systemd/report/io.systemd.Basic io.systemd.Facts.List {}
 varlinkctl --more call /run/systemd/report/io.systemd.Basic io.systemd.Facts.Describe {}
+
+# Test HTTP upload (plain http)
+at_exit() {
+    set +e
+    systemctl stop fake-report-server
+}
+trap at_exit EXIT
+
+systemd-run -p Type=notify --unit=fake-report-server \
+    /usr/lib/systemd/tests/integration-tests/TEST-74-AUX-UTILS/TEST-74-AUX-UTILS.units/fake-report-server.py
+systemctl status fake-report-server
+
+"$REPORT" metrics --url=http://localhost:8089/
+"$REPORT" facts --url=http://localhost:8089/