Cluster::initialize allows cluster name and cephx user to be specified

README.md

@@ -31,6 +31,15 @@ Or install it yourself as:
     pool = cluster.pool("my-pool-xyz")
     pool.open
 
+    # CephRuby::Cluster.new currently accepts up to three setings.
+    # conf_file - path to your ceph.conf file (default: /etc/ceph/ceph.conf)
+    # options hash:
+    #   :user    - cephx user to authenticate against (default: client.admin)
+                     (would look for a keyring file at: '/etc/ceph/<cluster>.<user>.keyring')
+    #   :cluster - ceph cluster to connect to (default: ceph)
+
+    cluster = CephRuby::Cluster.new "/etc/ceph/us-east.conf", {cluster: 'us-east', user: 'client.amazing'}
+
     # simple example for using rados objects
     object = pool.rados_object("my-object-xyz")
     object.write(0, "This is a Test!")

lib/ceph-ruby/cluster.rb

@@ -2,12 +2,20 @@ module CephRuby
   class Cluster
     attr_accessor :handle
 
-    def initialize(config_path = "/etc/ceph/ceph.conf")
+    # Creates a connection to a given ceph Cluster
+    # Takes optional paramaters config_path, and an options hash
+    # config_path string - path to ceph configuration file
+    # options:
+    #  :cluster - cluster name (default: ceph)
+    #  :user    - cephx key file and user to use (default: client.admin)
+    def initialize(config_path = '/etc/ceph/ceph.conf', options = {})
+      cluster = options.fetch(:cluster, 'ceph')
+      user = options.fetch(:user, 'client.admin')
       log("init lib rados #{Lib::Rados.version_string}, lib rbd #{Lib::Rbd.version_string}")
 
       handle_p = FFI::MemoryPointer.new(:pointer)
-      ret = Lib::Rados.rados_create(handle_p, nil)
-      raise SystemCallError.new("open of cluster failed", -ret) if ret < 0
+      ret = Lib::Rados.rados_create2(handle_p, cluster, user, 0)
+      raise SystemCallError.new('open of cluster failed', -ret) if ret < 0
       self.handle = handle_p.get_pointer(0)
 
       setup_using_file(config_path)

lib/ceph-ruby/lib/rados.rb

@@ -12,6 +12,7 @@ module Rados
       attach_function 'rados_version', [:pointer, :pointer, :pointer], :void
 
       attach_function 'rados_create', [:pointer, :string], :int
+      attach_function 'rados_create2', [:pointer, :string, :string, :int], :int
       attach_function 'rados_connect', [:pointer], :int
       attach_function 'rados_conf_read_file', [:pointer, :string], :int
       attach_function 'rados_shutdown', [:pointer], :void

lib/ceph-ruby/version.rb

@@ -1,3 +1,3 @@
 module CephRuby
-  VERSION = "1.1"
+  VERSION = "1.2"
 end