From 6214d1ec6796ffab41b9413840e733a1d5cf70dd Mon Sep 17 00:00:00 2001
From: Jamis Buck <jamis@37signals.com>
Date: Sat, 5 Apr 2008 22:03:06 -0600
Subject: concurrent session limiting

---
 lib/net/ssh/multi/channel_proxy.rb      | 26 +++++++++++
 lib/net/ssh/multi/pending_connection.rb | 77 +++++++++++++++++++++++++++++++++
 2 files changed, 103 insertions(+)
 create mode 100644 lib/net/ssh/multi/channel_proxy.rb
 create mode 100644 lib/net/ssh/multi/pending_connection.rb

diff --git a/lib/net/ssh/multi/channel_proxy.rb b/lib/net/ssh/multi/channel_proxy.rb
new file mode 100644
index 0000000..99f7986
--- /dev/null
+++ b/lib/net/ssh/multi/channel_proxy.rb
@@ -0,0 +1,26 @@
+module Net; module SSH; module Multi
+  class ChannelProxy
+    attr_reader :on_confirm
+
+    def initialize(&on_confirm)
+      @on_confirm = on_confirm
+      @recordings = []
+      @channel = nil
+    end
+
+    def delegate_to(channel)
+      @channel = channel
+      @recordings.each do |sym, args, block|
+        @channel.__send__(sym, *args, &block)
+      end
+    end
+
+    def method_missing(sym, *args, &block)
+      if @channel
+        @channel.__send__(sym, *args, &block)
+      else
+        @recordings << [sym, args, block]
+      end
+    end
+  end
+end; end; end
\ No newline at end of file
diff --git a/lib/net/ssh/multi/pending_connection.rb b/lib/net/ssh/multi/pending_connection.rb
new file mode 100644
index 0000000..fcebcba
--- /dev/null
+++ b/lib/net/ssh/multi/pending_connection.rb
@@ -0,0 +1,77 @@
+require 'net/ssh/multi/channel_proxy'
+
+module Net; module SSH; module Multi
+  class PendingConnection
+    class ChannelOpenRecording #:nodoc:
+      attr_reader :type, :extras, :channel
+
+      def initialize(type, extras, channel)
+        @type, @extras, @channel = type, extras, channel
+      end
+
+      def replay_on(session)
+        real_channel = session.open_channel(type, *extras, &channel.on_confirm)
+        channel.delegate_to(real_channel)
+      end
+    end
+
+    class SendGlobalRequestRecording #:nodoc:
+      attr_reader :type, :extra, :callback
+
+      def initialize(type, extra, callback)
+        @type, @extra, @callback = type, extra, callback
+      end
+
+      def replay_on(session)
+        session.send_global_request(type, *extra, &callback)
+      end
+    end
+
+    attr_reader :server
+
+    def initialize(server)
+      @server = server
+      @recordings = []
+    end
+
+    def replace_with(session)
+      @recordings.each { |recording| recording.replay_on(session) }
+      @server.replace_session(session)
+    end
+
+    def open_channel(type="session", *extras, &on_confirm)
+      channel = ChannelProxy.new(&on_confirm)
+      @recordings << ChannelOpenRecording.new(type, extras, channel)
+      return channel
+    end
+
+    def send_global_request(type, *extra, &callback)
+      @recordings << SendGlobalRequestRecording.new(type, extra, callback)
+      self
+    end
+
+    def busy?(include_invisible=false)
+      true
+    end
+
+    def close
+      self
+    end
+
+    def channels
+      []
+    end
+
+    def preprocess
+      true
+    end
+
+    def postprocess(readers, writers)
+      true
+    end
+
+    def listeners
+      {}
+    end
+  end
+end; end; end
\ No newline at end of file
-- 
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