[Groonga-commit] droonga/droonga-engine at ed7e217 [buffered-forward] Handle changes of live nodes list correctly

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YUKI Hiroshi null+****@clear*****
Thu Dec 25 16:41:16 JST 2014


YUKI Hiroshi	2014-12-25 16:41:16 +0900 (Thu, 25 Dec 2014)

  New Revision: ed7e217d95b42f86b20f79fcda428ce352f4c16d
  https://github.com/droonga/droonga-engine/commit/ed7e217d95b42f86b20f79fcda428ce352f4c16d

  Message:
    Handle changes of live nodes list correctly
    
    Conflicts:
    	lib/droonga/engine_state.rb

  Modified files:
    lib/droonga/cluster_state.rb
    lib/droonga/engine.rb
    lib/droonga/engine_state.rb

  Modified: lib/droonga/cluster_state.rb (+15 -0)
===================================================================
--- lib/droonga/cluster_state.rb    2014-12-25 16:33:20 +0900 (2ca555c)
+++ lib/droonga/cluster_state.rb    2014-12-25 16:41:16 +0900 (2dd734d)
@@ -21,10 +21,12 @@ module Droonga
     include Loggable
 
     attr_accessor :catalog
+    attr_writer :on_change
 
     def initialize
       @catalog = nil
       @live_nodes_list = nil
+      @on_change = nil
     end
 
     def all_nodes
@@ -80,6 +82,19 @@ module Droonga
       same_role_nodes - dead_nodes
     end
 
+    def live_nodes_list=(new_nodes_list)
+      old_live_nodes_list = @live_nodes_list
+      @live_nodes_list = new_nodes_list
+      unless old_live_nodes_list == new_nodes_list
+        on_change
+      end
+      @live_nodes_list
+    end
+
+    def on_change
+      @on_change.call if @on_change
+    end
+
     private
     def node_metadata
       @node_metadata ||= NodeMetadata.new

  Modified: lib/droonga/engine.rb (+2 -2)
===================================================================
--- lib/droonga/engine.rb    2014-12-25 16:33:20 +0900 (308e343)
+++ lib/droonga/engine.rb    2014-12-25 16:41:16 +0900 (9d6872b)
@@ -33,13 +33,13 @@ module Droonga
     attr_writer :on_ready
     def initialize(loop, name, internal_name)
       @state = EngineState.new(loop, name, internal_name)
-      @state.live_nodes_list = load_live_nodes_list
+      @state.cluster.live_nodes_list = load_live_nodes_list
       @catalog = load_catalog
       @state.catalog = @catalog
       @dispatcher = create_dispatcher
       @live_nodes_list_observer = FileObserver.new(loop, Path.live_nodes_list)
       @live_nodes_list_observer.on_change = lambda do
-        @state.live_nodes_list = load_live_nodes_list
+        @state.cluster.live_nodes_list = load_live_nodes_list
       end
       @node_metadata_observer = FileObserver.new(loop, Path.node_metadata)
       @node_metadata_observer.on_change = lambda do

  Modified: lib/droonga/engine_state.rb (+3 -0)
===================================================================
--- lib/droonga/engine_state.rb    2014-12-25 16:33:20 +0900 (aeaae14)
+++ lib/droonga/engine_state.rb    2014-12-25 16:41:16 +0900 (1d598e0)
@@ -46,6 +46,9 @@ module Droonga
       @cluster = ClusterState.new
       @forwarder = BufferedForwarder.new(@loop,
                                          :cluster_state => @cluster)
+      @cluster.on_change = lambda do
+        @forwarder.resume
+      end
       @replier = Replier.new(@forwarder)
       @on_ready = nil
       @on_finish = nil
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