From: Alfredo Deza <adeza@redhat.com>
Date: Thu, 13 Aug 2015 12:29:46 +0000 (-0400)
Subject: [RM-11115] add a callback for checking if ceph is installed
X-Git-Tag: v1.5.28~4^2~6
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=224ab009f98dcaee5a4a0947cedd2cc837292dc0;p=ceph-deploy.git

[RM-11115] add a callback for checking if ceph is installed

Signed-off-by: Alfredo Deza <adeza@redhat.com>
---

diff --git a/ceph_deploy/util/packages.py b/ceph_deploy/util/packages.py
index 3a1bea6..4c63804 100644
--- a/ceph_deploy/util/packages.py
+++ b/ceph_deploy/util/packages.py
@@ -57,3 +57,18 @@ class Ceph(object):
         :mod:``ceph_deploy.util.versions.NormalizedVersion``)
         """
         return versions.parse_version(self._get_version_output)
+
+
+# callback helpers
+
+def ceph_is_installed(module):
+    """
+    A helper callback to be executed after the connection is made to ensure
+    that Ceph is installed.
+    """
+    ceph_package = Ceph(module.conn)
+    if not ceph_package.installed:
+        host = module.conn.hostname
+        raise RuntimeError(
+            'ceph needs to be installed in remote host: %s' % host
+        )