Create lists if they don't already exist

mailman_sync.py

@@ -7,11 +7,36 @@ Update Mailman 2 lists via a json API of the form {"LIST": ["ADDRESS", ...]}
 import argparse
 import os
 from pathlib import Path
+import secrets
+import string
 import subprocess
 import tempfile
 
 import requests
 
+PASSWORD_CHARS = string.ascii_letters + string.digits + string.punctuation
+PASSWORD_LEN = 18
+
+
+def newlist(mailman_bin: Path, listname: str, urlhost: str, admin: str):
+    password = "".join(secrets.choice(PASSWORD_CHARS) for i in range(PASSWORD_LEN))
+
+    output = subprocess.run(
+        [
+            mailman_bin / "newlist",
+            "--quiet",
+            f"--urlhost={urlhost}",
+            listname,
+            admin,
+            password,
+        ],
+        encoding="ascii",
+        capture_output=True,
+        check=True,
+    )
+    for line in output.stdout.splitlines():
+        print(f"[Creating {listname}] {line}")
+
 
 def config_list(mailman_bin: Path, mailing_list: str, dry_run: bool):
     config_changes = """
@@ -85,7 +110,15 @@ def sync_members(
         print(f"[Syncing {mailing_list}] {line}")
 
 
-def main(mailman_bin: Path, api: str, api_auth: str, list_suffix: str, dry_run: bool):
+def main(
+    mailman_bin: Path,
+    api: str,
+    api_auth: str,
+    list_suffix: str,
+    dry_run: bool,
+    urlhost: str,
+    admin: str,
+):
     r = requests.get(api, headers={"Authorization": api_auth})
     if not r.ok:
         print(f"Failed to get mailing list data from api: {r.status_code} {r.text}")
@@ -100,13 +133,16 @@ def main(mailman_bin: Path, api: str, api_auth: str, list_suffix: str, dry_run:
     certification_lists = r.json()
     for name, members in certification_lists.items():
         list_name = name + list_suffix
-        if list_name in existing_lists:
+        if list_name not in existing_lists:
+            if dry_run:
+                print(f"Skipping non-existing list {list_name} in dry run mode")
+                continue
+            else:
+                newlist(mailman_bin, list_name, urlhost, admin)
+
         print(f"Configuring/syncing {list_name}...")
         config_list(mailman_bin, list_name, dry_run)
         sync_members(mailman_bin, list_name, members, dry_run)
-        else:
-            print(f"Skipping {list_name}, as it does not exist in Mailman")
-
 
 
 def parse_arguments():
@@ -119,6 +155,10 @@ def parse_arguments():
     )
     argp.add_argument("--api", required=True, help="API endpoint to retrieve JSON from")
     argp.add_argument("--list-suffix", help="Suffix for mailing lists")
+    argp.add_argument("--urlhost", help="Urlhost to use when creating new lists")
+    argp.add_argument(
+        "--admin", help="Admin email address to use when creating new lists"
+    )
     argp.add_argument(
         "-n",
         "--dry-run",
@@ -138,7 +178,15 @@ if __name__ == "__main__":
         exit(-1)
 
     try:
-        main(args.bin, args.api, api_auth, args.list_suffix, args.dry_run)
+        main(
+            args.bin,
+            args.api,
+            api_auth,
+            args.list_suffix,
+            args.dry_run,
+            args.urlhost,
+            args.admin,
+        )
     except subprocess.CalledProcessError as e:
         print(e.stderr)
         raise