1 files changed, 41 insertions, 0 deletions
diff --git a/third_party/libwebrtc/build/android/gyp/util/server_utils.py b/third_party/libwebrtc/build/android/gyp/util/server_utils.py
new file mode 100644
index 0000000000..e050ef6552
--- /dev/null
+++ b/third_party/libwebrtc/build/android/gyp/util/server_utils.py
@@ -0,0 +1,41 @@
+# Copyright 2021 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import contextlib
+import json
+import os
+import socket
+
+# Use a unix abstract domain socket:
+# https://man7.org/linux/man-pages/man7/unix.7.html#:~:text=abstract:
+SOCKET_ADDRESS = '\0chromium_build_server_socket'
+BUILD_SERVER_ENV_VARIABLE = 'INVOKED_BY_BUILD_SERVER'
+
+
+def MaybeRunCommand(name, argv, stamp_file):
+  """Returns True if the command was successfully sent to the build server."""
+
+  # When the build server runs a command, it sets this environment variable.
+  # This prevents infinite recursion where the script sends a request to the
+  # build server, then the build server runs the script, and then the script
+  # sends another request to the build server.
+  if BUILD_SERVER_ENV_VARIABLE in os.environ:
+    return False
+  with contextlib.closing(socket.socket(socket.AF_UNIX)) as sock:
+    try:
+      sock.connect(SOCKET_ADDRESS)
+      sock.sendall(
+          json.dumps({
+              'name': name,
+              'cmd': argv,
+              'cwd': os.getcwd(),
+              'stamp_file': stamp_file,
+          }).encode('utf8'))
+    except socket.error as e:
+      # [Errno 111] Connection refused. Either the server has not been started
+      #             or the server is not currently accepting new connections.
+      if e.errno == 111:
+        return False
+      raise e
+  return True