Runit service provider

This provider manages daemons running supervised by Runit[1].

It tries to detect the service directory, with by order of preference:
     * /service
     * /var/service
     * /etc/service

The daemon directory should be placed in a directory that can be
by default in:
     * /etc/sv
     * /var/lib/service

or this can be overriden in the service resource parameters:
service {
  "myservice":
       provider => "runit", path => "/path/to/daemons";
}

This provider supports out of the box:
     * start/stop
     * enable/disable
     * restart
     * status

[1]: http://smarden.sunsite.dk/runit/

1 files changed, 93 insertions, 0 deletions

diff --git a/lib/puppet/provider/service/runit.rb b/lib/puppet/provider/service/runit.rb
new file mode 100644
index 000000000..230fa75d9
--- /dev/null
+++ b/lib/puppet/provider/service/runit.rb
@@ -0,0 +1,93 @@
+# Daemontools service management
+#
+# author Brice Figureau <brice-puppet@daysofwonder.com>
+Puppet::Type.type(:service).provide :runit, :parent => :daemontools do
+    desc "Runit service management.
+    This provider manages daemons running supervised by Runit.
+    It tries to detect the service directory, with by order of preference:
+     * /service
+     * /var/service
+     * /etc/service
+    The daemon directory should be placed in a directory that can be 
+    by default in:
+     * /etc/sv
+    or this can be overriden in the service resource parameters:
+    service {
+     \"myservice\":
+       provider => \"runit\", path => \"/path/to/daemons\";
+    }
+
+    This provider supports out of the box:
+     * start/stop
+     * enable/disable
+     * restart
+     * status"
+
+    commands :sv => "/usr/bin/sv"
+
+    class << self
+        # this is necessary to autodetect a valid resource
+        # default path, since there is no standard for such directory.
+        def defpath
+            unless defined?(@defpath) and @defpath
+                ["/etc/sv", "/var/lib/service"].each do |path|
+                    if FileTest.exist?(path)
+                        @defpath = path
+                        break
+                    end
+                end
+                raise "Could not find the daemon directory (tested [/var/lib/service,/etc])" unless @defpath
+            end
+            @defpath
+        end
+    end
+
+    # find the service dir on this node
+    def servicedir
+      unless defined?(@servicedir) and @servicedir
+        ["/service", "/etc/service","/var/service"].each do |path|
+            if FileTest.exist?(path)
+                @servicedir = path
+                break
+            end
+        end
+        raise "Could not find service directory" unless @servicedir
+      end
+      @servicedir
+    end
+
+    def restartcmd
+        [ command(:sv), "restart", self.service]
+    end
+
+    def status
+        begin
+            output = sv "status", self.daemon
+            return :running if output =~ /^run: /
+        rescue Puppet::ExecutionFailure => detail
+            unless detail.message =~ /(warning: |runsv not running$)/
+                raise Puppet::Error.new( "Could not get status for service %s: %s" % [ resource.ref, detail] )
+            end
+        end
+        return :stopped
+    end
+
+    # relay to the stopcmd
+    def stop
+        ucommand( :stop )
+    end
+
+    def stopcmd
+        [ command(:sv), "stop", self.service]
+    end
+
+    # disable by removing the symlink so that runit
+    # doesn't restart our service behind our back
+    # note that runit doesn't need to perform a stop
+    # before a disable
+    def disable
+        # unlink the daemon symlink to disable it
+        File.unlink(self.service) if FileTest.symlink?(self.service)
+    end
+end
+