From e66b62f40bcb29ca62c905dabe87cc6e91a6bccd Mon Sep 17 00:00:00 2001
From: Joey Hess <joeyh@joeyh.name>
Date: Fri, 16 Oct 2015 14:20:13 -0400
Subject: Added Propellor.Property.Spin, which can be used to make a host be a
 controller of other hosts.

The hard part of this is avoiding loops of controllers. To make that work,
a ControllerChain is passed to the host that's spun, and is added to the
Info of the host being spun, where the controller property can check it
to detect an avoid a loop.

That needed an expansion of the CmdLine data type. I made the new
ControlledRun only be used when there is a ControllerChain provided.
This avoids breaking backwards compatability with old propellor
deployments, as --spin still uses SimpleRun.

Note: Making an old propellor deployment be controlled by a controller
won't work until it's been updated to this commit, so it knows about
the ControlledRun parameter.

(Untested)
---
 propellor.cabal | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'propellor.cabal')

diff --git a/propellor.cabal b/propellor.cabal
index 86337505..b61d2a2f 100644
--- a/propellor.cabal
+++ b/propellor.cabal
@@ -94,6 +94,9 @@ Library
     Propellor.Property.Grub
     Propellor.Property.Journald
     Propellor.Property.Kerberos
+    Propellor.Property.List
+    Propellor.Property.LightDM
+    Propellor.Property.Logcheck
     Propellor.Property.Mount
     Propellor.Property.Network
     Propellor.Property.Nginx
@@ -106,9 +109,7 @@ Library
     Propellor.Property.Prosody
     Propellor.Property.Reboot
     Propellor.Property.Rsync
-    Propellor.Property.List
-    Propellor.Property.LightDM
-    Propellor.Property.Logcheck
+    Propellor.Property.Spin
     Propellor.Property.Scheduled
     Propellor.Property.Service
     Propellor.Property.Ssh
-- 
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