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69 lines
2.2 KiB
Ruby
69 lines
2.2 KiB
Ruby
module Rack
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# *Handlers* connect web servers with Rack.
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#
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# Rack includes Handlers for Mongrel, WEBrick, FastCGI, CGI, SCGI
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# and LiteSpeed.
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#
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# Handlers usually are activated by calling <tt>MyHandler.run(myapp)</tt>.
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# A second optional hash can be passed to include server-specific
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# configuration.
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module Handler
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def self.get(server)
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return unless server
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server = server.to_s
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if klass = @handlers[server]
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obj = Object
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klass.split("::").each { |x| obj = obj.const_get(x) }
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obj
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else
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try_require('rack/handler', server)
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const_get(server)
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end
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end
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# Transforms server-name constants to their canonical form as filenames,
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# then tries to require them but silences the LoadError if not found
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#
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# Naming convention:
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#
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# Foo # => 'foo'
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# FooBar # => 'foo_bar.rb'
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# FooBAR # => 'foobar.rb'
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# FOObar # => 'foobar.rb'
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# FOOBAR # => 'foobar.rb'
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# FooBarBaz # => 'foo_bar_baz.rb'
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def self.try_require(prefix, const_name)
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file = const_name.gsub(/^[A-Z]+/) { |pre| pre.downcase }.
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gsub(/[A-Z]+[^A-Z]/, '_\&').downcase
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require(::File.join(prefix, file))
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rescue LoadError
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end
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def self.register(server, klass)
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@handlers ||= {}
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@handlers[server] = klass
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end
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autoload :CGI, "rack/handler/cgi"
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autoload :FastCGI, "rack/handler/fastcgi"
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autoload :Mongrel, "rack/handler/mongrel"
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autoload :EventedMongrel, "rack/handler/evented_mongrel"
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autoload :SwiftipliedMongrel, "rack/handler/swiftiplied_mongrel"
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autoload :WEBrick, "rack/handler/webrick"
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autoload :LSWS, "rack/handler/lsws"
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autoload :SCGI, "rack/handler/scgi"
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autoload :Thin, "rack/handler/thin"
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register 'cgi', 'Rack::Handler::CGI'
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register 'fastcgi', 'Rack::Handler::FastCGI'
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register 'mongrel', 'Rack::Handler::Mongrel'
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register 'emongrel', 'Rack::Handler::EventedMongrel'
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register 'smongrel', 'Rack::Handler::SwiftipliedMongrel'
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register 'webrick', 'Rack::Handler::WEBrick'
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register 'lsws', 'Rack::Handler::LSWS'
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register 'scgi', 'Rack::Handler::SCGI'
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register 'thin', 'Rack::Handler::Thin'
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end
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end
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