1 files changed, 66 insertions, 0 deletions
diff --git a/lib/ansible/module_utils/facts/timeout.py b/lib/ansible/module_utils/facts/timeout.py
new file mode 100644
index 0000000000..2927b31c82
--- /dev/null
+++ b/lib/ansible/module_utils/facts/timeout.py
@@ -0,0 +1,66 @@
+# This file is part of Ansible
+#
+# Ansible is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Ansible is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
+
+import signal
+
+# timeout function to make sure some fact gathering
+# steps do not exceed a time limit
+
+GATHER_TIMEOUT = None
+DEFAULT_GATHER_TIMEOUT = 10
+
+
+class TimeoutError(Exception):
+    pass
+
+
+def timeout(seconds=None, error_message="Timer expired"):
+
+    def decorator(func):
+        def _handle_timeout(signum, frame):
+            msg = 'Timer expired after %s seconds' % globals().get('GATHER_TIMEOUT')
+            raise TimeoutError(msg)
+
+        def wrapper(*args, **kwargs):
+            local_seconds = seconds
+            if local_seconds is None:
+                local_seconds = globals().get('GATHER_TIMEOUT') or DEFAULT_GATHER_TIMEOUT
+            signal.signal(signal.SIGALRM, _handle_timeout)
+            signal.alarm(local_seconds)
+
+            try:
+                result = func(*args, **kwargs)
+            finally:
+                signal.alarm(0)
+            return result
+
+        return wrapper
+
+    # If we were called as @timeout, then the first parameter will be the
+    # function we are to wrap instead of the number of seconds.  Detect this
+    # and correct it by setting seconds to our default value and return the
+    # inner decorator function manually wrapped around the function
+    if callable(seconds):
+        func = seconds
+        seconds = None
+        return decorator(func)
+
+    # If we were called as @timeout([...]) then python itself will take
+    # care of wrapping the inner decorator around the function
+
+    return decorator