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#
#
# 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.
#
#
module Custodian
class TestFactory
#
# 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)
raise ArgumentError, 'The type of test to create cannot be nil' if line.nil?
raise ArgumentError, 'The type of test to create must be a string' unless line.kind_of? String
#
# The array we return.
#
result = []
#
# If this is an obvious protocol test.
#
if line =~ /must\s+(not\s+)?run\s+(\S+)(\s+|\.|$)/
test_type = $2.dup
test_type.chomp!('.')
if @@subclasses[test_type].nil?
raise ArgumentError, "There is no handler registered for the '#{test_type}' test-type"
end
#
# For each of the test-classes that implement the type
#
@@subclasses[test_type].each do |impl|
if impl
obj = impl.new(line)
#
# Get the notification text, which is not specific to the test-type
#
# We do this only after we've instantiated the test.
#
if line =~ /\s+otherwise\s+'([^']+)'/
obj.set_notification_text($1.dup)
end
result.push(obj)
else
raise ArgumentError, "Bad test type: '#{test_type}'"
end
end
# return the test-types.
return(result)
else
raise "Failed to instantiate a suitable protocol-test for '#{line}'"
end
end
#
# Register a new test type - this must be called by our derived classes
#
def self.register_test_type(name)
@@subclasses[name] ||= []
@@subclasses[name].push(self)
end
#
# Return the test-types we know about.
#
# i.e. Derived classes that have registered themselves.
#
def self.known_tests
@@subclasses
end
#
# Get the friendly-type of derived-classes
#
def get_type
# get each registed type
@@subclasses.keys.each do |name|
# for each handler ..
@@subclasses[name].each do |impl|
if (impl == self.class)
return name
end
end
end
nil
end
#
# Return the target of this test.
#
def target
@host
end
#
# Return the user-text which is returned on error
#
def get_notification_text
@notification_text
end
#
# Set the user-text which is returned on error.
#
def set_notification_text(str)
@notification_text = str
end
#
# Is this test inverted?
#
def inverted
@inverted
end
#
# Return the port of this test.
#
def port
@port
end
end
end
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