From 4b2febc3813a540f3733ec25777c4935dcfd59cb Mon Sep 17 00:00:00 2001
From: Steve Kemp <steve@steve.org.uk>
Date: Wed, 21 Nov 2012 16:41:44 +0000
Subject:   Added stub for class-factory + test objects.

---
 lib/custodian/protocoltest.rb     | 66 +++++++++++++++++++++++++++++++++++++++
 lib/custodian/protocoltest/tcp.rb | 54 ++++++++++++++++++++++++++++++++
 2 files changed, 120 insertions(+)
 create mode 100644 lib/custodian/protocoltest.rb
 create mode 100644 lib/custodian/protocoltest/tcp.rb

diff --git a/lib/custodian/protocoltest.rb b/lib/custodian/protocoltest.rb
new file mode 100644
index 0000000..271e64c
--- /dev/null
+++ b/lib/custodian/protocoltest.rb
@@ -0,0 +1,66 @@
+
+#
+#
+# Base class for custodian protocol-tests
+#
+# Each subclass will register themselves, via the call
+# to 'register_test_type'.
+#
+# This class is a factory that will return the correct
+# derived class for a given line from our configuration
+# file.
+#
+#
+class ProtocolTest
+
+
+  #
+  # The subclasses we have.
+  #
+  @@subclasses = { }
+
+
+  #
+  # Create a test-type object given a line of text from our parser.
+  #
+  # The line will be like "target must run tcp|ssh|ftp|smtp .."
+  #
+  #
+  def self.create( line )
+    if ( line =~ /must\s+run\s+(\S+)(\s+|\.|$)/ )
+      test_type = $1.dup
+      test_type.chomp!( "." )
+
+      c = @@subclasses[test_type]
+      if c
+        c.new( line )
+      else
+        raise ArgumentError, "Bad test type: #{test_type}"
+      end
+    else
+      raise "Uknown line given"
+    end
+  end
+
+
+  #
+  # Register a new test type - this must be called by our derived classes
+  #
+  def self.register_test_type name
+    @@subclasses[name] = self
+  end
+
+
+  #
+  # Return an array of test-types we know about
+  #
+  # i.e. Derived classes that have registered themselves.
+  #
+  #
+  def types
+    @@subclasses
+  end
+
+
+end
+
diff --git a/lib/custodian/protocoltest/tcp.rb b/lib/custodian/protocoltest/tcp.rb
new file mode 100644
index 0000000..fef6dea
--- /dev/null
+++ b/lib/custodian/protocoltest/tcp.rb
@@ -0,0 +1,54 @@
+#
+#  The TCP-protocol test.
+#
+#  This object is instantiated if the parser sees a line such as:
+#
+###
+### foo.vm.bytemark.co.uk must run tcp on 22 with banner 'ssh' otherwise 'ssh fail'.
+###
+#
+#  The specification of the port is mandatory, the banner is optional.
+#
+class TCPTest < ProtocolTest
+
+
+  #
+  # Constructor
+  #
+  # Ensure we received a port to run the TCP-test against.
+  #
+  def initialize( line )
+    raise ArgumentError, "Missing port" unless ( line =~ /on\s+([0-9]+)/ );
+    @error = nil
+  end
+
+
+  #
+  # Helper for development.
+  #
+  def display
+    puts "I'm a TCP-test!"
+  end
+
+
+  #
+  # Run the TCP-protocol test.
+  #
+  def run_test
+
+    # reset the error, in case we were previously executed.
+    @error = nil
+
+  end
+
+
+  #
+  # If the test fails then report the error.
+  #
+  def error
+    @error
+  end
+
+  register_test_type "tcp"
+
+end
-- 
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