4eb22d0272
Re-adapt the Spec-compliant solution (instead of Lib-compliant solution). Thus no more 100% deferred interface. Rename EWSGI_RESPONSE into EWSGI_RESPONSE_BUFFER Added in extra/response-as-result/ an copy/paste from the implementation of Paul's proposal (not up to date with Paul's spec). But this is mainly for information and tests. Removed part of the ewsgi/specification interfaces ... to be able to test EWSGI compliant library against the pure specification (experimental). Renamed most of the GW_... into EWSGI_...
110 lines
2.9 KiB
Plaintext
110 lines
2.9 KiB
Plaintext
note
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description: "[
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EWSGI_APPLICATION
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]"
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specification: "EWSGI specification https://github.com/Eiffel-World/Eiffel-Web-Framework/wiki/EWSGI-specification"
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legal: "See notice at end of class."
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status: "See notice at end of class."
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date: "$Date$"
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revision: "$Revision$"
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deferred class
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EWSGI_APPLICATION
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feature {NONE} -- Execution
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execute (req: EWSGI_REQUEST; res: EWSGI_RESPONSE_BUFFER)
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-- Execute the request
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-- See `req.input' for input stream
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-- `req.environment' for the Gateway environment
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-- and `res' for output buffer
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require
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res_status_unset: not res.status_is_set
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deferred
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ensure
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res_status_set: res.status_is_set
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res_committed: res.message_committed
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end
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feature -- Process request
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process (env: EWSGI_ENVIRONMENT; a_input: EWSGI_INPUT_STREAM; a_output: EWSGI_OUTPUT_STREAM)
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-- Process request with environment `env', and i/o streams `a_input' and `a_output'
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local
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rescued: BOOLEAN
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req: detachable like new_request
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res: detachable like new_response
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do
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if not rescued then
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request_count := request_count + 1
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pre_execute (env)
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req := new_request (env, a_input)
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res := new_response (req, a_output)
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execute (req, res)
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post_execute (req, res)
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else
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rescue_execute (req, res, (create {EXCEPTION_MANAGER}).last_exception)
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end
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if res /= Void then
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res.commit
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end
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end
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feature -- Access
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request_count: INTEGER
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-- Request count
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feature {NONE} -- Execution
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pre_execute (env: EWSGI_ENVIRONMENT)
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-- Operation processed before `execute'
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require
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env_attached: env /= Void
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do
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end
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post_execute (req: detachable EWSGI_REQUEST; res: detachable EWSGI_RESPONSE_BUFFER)
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-- Operation processed after `execute', or after `rescue_execute'
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do
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end
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rescue_execute (req: detachable EWSGI_REQUEST; res: detachable EWSGI_RESPONSE_BUFFER; a_exception: detachable EXCEPTION)
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-- Operation processed on rescue of `execute'
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do
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if
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req /= Void and res /= Void
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and a_exception /= Void and then attached a_exception.exception_trace as l_trace
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then
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res.write_header ({HTTP_STATUS_CODE}.internal_server_error, Void)
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res.write_string ("<pre>" + l_trace + "</pre>")
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end
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post_execute (req, res)
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end
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feature {NONE} -- Factory
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new_request (env: EWSGI_ENVIRONMENT; a_input: EWSGI_INPUT_STREAM): EWSGI_REQUEST
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do
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create {EWSGI_REQUEST} Result.make (env, a_input)
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Result.environment.set_variable (request_count.out, "REQUEST_COUNT")
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end
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new_response (req: EWSGI_REQUEST; a_output: EWSGI_OUTPUT_STREAM): EWSGI_RESPONSE_BUFFER
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do
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create {EWSGI_RESPONSE_BUFFER} Result.make (a_output)
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end
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;note
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copyright: "2011-2011, Eiffel Software and others"
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license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
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source: "[
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Eiffel Software
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5949 Hollister Ave., Goleta, CA 93117 USA
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Telephone 805-685-1006, Fax 805-685-6869
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Website http://www.eiffel.com
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Customer support http://support.eiffel.com
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]"
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end
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