Added buildbot module

modules/buildbot/worker.py

@@ -0,0 +1,58 @@
+#!/usr/bin/env python3
+
+import multiprocessing
+import os
+import socket
+from io import open
+
+from buildbot_worker.bot import Worker
+from twisted.application import service
+
+
+def require_env(key: str) -> str:
+    val = os.environ.get(key)
+    assert val is not None, "val is not set"
+    return val
+
+
+def setup_worker(application: service.Application, id: int) -> None:
+    basedir = f"{require_env('BUILDBOT_DIR')}-{id}"
+    os.makedirs(basedir, mode=0o700, exist_ok=True)
+
+    master_url = require_env("MASTER_URL")
+    hostname = socket.gethostname()
+    workername = f"{hostname}-{id}"
+
+    with open(
+        require_env("WORKER_PASSWORD_FILE"), "r", encoding="utf-8"
+    ) as passwd_file:
+        passwd = passwd_file.read().strip("\r\n")
+    keepalive = 600
+    umask = None
+    maxdelay = 300
+    numcpus = None
+    allow_shutdown = None
+
+    s = Worker(
+        None,
+        None,
+        workername,
+        passwd,
+        basedir,
+        keepalive,
+        connection_string=master_url,
+        umask=umask,
+        maxdelay=maxdelay,
+        numcpus=numcpus,
+        allow_shutdown=allow_shutdown,
+    )
+    s.setServiceParent(application)
+
+
+# note: this line is matched against to check that this is a worker
+# directory; do not edit it.
+application = service.Application("buildbot-worker")
+
+for i in range(8):
+    setup_worker(application, i)
+