From: Alfredo Deza <alfredo.deza@inktank.com>
Date: Tue, 8 Jul 2014 14:09:03 +0000 (-0400)
Subject: create the executable path helper
X-Git-Tag: v1.5.8~5^2~4
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=c1b118a5f2ff4c3e45233377ec348a635c9552a1;p=ceph-deploy.git

create the executable path helper

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
---

diff --git a/ceph_deploy/util/system.py b/ceph_deploy/util/system.py
new file mode 100644
index 0000000..74e33c2
--- /dev/null
+++ b/ceph_deploy/util/system.py
@@ -0,0 +1,15 @@
+from ceph_deploy.exc import ExecutableNotFound
+
+
+def executable_path(conn, executable):
+    """
+    Remote validator that accepts a connection object to ensure that a certain
+    executable is available returning its full path if so.
+
+    Otherwise an exception with thorough details will be raised, informing the
+    user that the executable was not found.
+    """
+    executable_path = conn.remote_module.which(executable)
+    if not executable_path:
+        raise ExecutableNotFound(executable, conn.hostname)
+    return executable_path