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Removed generic parameter in WSF_FILTER_HANDLER, since it is useless and make code heavy

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Signed-off-by: Olivier Ligot <oligot@gmail.com>
Signed-off-by: Jocelyn Fiat <jfiat@eiffel.com>
This commit is contained in:
Jocelyn Fiat
2012-10-08 10:40:44 +02:00
parent 2d3151e45f
commit aa743c0a7d
15 changed files with 313 additions and 118 deletions
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42
library/server/wsf/router/context/wsf_filter_context_handler.e Normal file
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note
description: "Summary description for {WSF_FILTER_CONTEXT_HANDLER}."
author: ""
date: "$Date$"
revision: "$Revision$"
deferred class
WSF_FILTER_CONTEXT_HANDLER [C -> WSF_HANDLER_CONTEXT create make end]
inherit
WSF_FILTER_HANDLER
redefine
next
end
WSF_CONTEXT_HANDLER [C]
feature -- Access
next: detachable WSF_CONTEXT_HANDLER [C]
-- Next handler
feature {NONE} -- Implementation
execute_next (ctx: C; req: WSF_REQUEST; res: WSF_RESPONSE)
do
if attached next as n then
n.execute (ctx, req, res)
end
end
note
copyright: "2011-2012, Jocelyn Fiat, Javier Velilla, Olivier Ligot, Eiffel Software and others"
license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
source: "[
Eiffel Software
5949 Hollister Ave., Goleta, CA 93117 USA
Telephone 805-685-1006, Fax 805-685-6869
Website http://www.eiffel.com
Customer support http://support.eiffel.com
]"
end

27
library/server/wsf/router/filter/README.md Normal file
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# Introduction
The basic idea of a filter is to pre-process incoming data and post-process outgoing data.
Filters are part of a filter chain, thus following the [chain of responsability design pattern](http://en.wikipedia.org/wiki/Chain-of-responsibility_pattern).
Each filter decides to call the next filter or not.
# Levels
In EWF, there are two levels of filters.
## WSF_FILTER
Typical examples of such filters are: logging, compression, routing (WSF_ROUTING_FILTER), ...
## WSF_FILTER_HANDLER
Handler that can also play the role of a filter.
Typical examples of such filters are: authentication, ...
# References
Filters (also called middelwares) in other environments:
* in Python: http://www.wsgi.org/en/latest/libraries.html
* in Node.js: http://expressjs.com/guide.html#middleware
* in Apache: http://httpd.apache.org/docs/2.2/en/filter.html

52
library/server/wsf/router/filter/wsf_filter.e Normal file
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note
description: "Objects than can pre-process incoming data and post-process outgoing data."
author: "Olivier Ligot"
date: "$Date$"
revision: "$Revision$"
deferred class
WSF_FILTER
feature -- Access
next: detachable WSF_FILTER
-- Next filter
feature -- Element change
set_next (a_next: WSF_FILTER)
-- Set `next' to `a_next'
do
next := a_next
ensure
next_set: next = a_next
end
feature -- Basic operations
execute (req: WSF_REQUEST; res: WSF_RESPONSE)
-- Execute the filter.
deferred
end
feature {NONE} -- Implementation
execute_next (req: WSF_REQUEST; res: WSF_RESPONSE)
-- Execute the `next' filter.
do
if attached next as n then
n.execute (req, res)
end
end
note
copyright: "2011-2012, Jocelyn Fiat, Javier Velilla, Olivier Ligot, Eiffel Software and others"
license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
source: "[
Eiffel Software
5949 Hollister Ave., Goleta, CA 93117 USA
Telephone 805-685-1006, Fax 805-685-6869
Website http://www.eiffel.com
Customer support http://support.eiffel.com
]"
end

41
library/server/wsf/router/filter/wsf_filter_handler.e Normal file
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note
description: "[
Handler that can also play the role of a filter, i.e.
than can pre-process incoming data and post-process outgoing data.
]"
author: ""
date: "$Date$"
revision: "$Revision$"
deferred class
WSF_FILTER_HANDLER
inherit
WSF_HANDLER
feature -- Access
next: detachable WSF_HANDLER
-- Next handler
feature -- Element change
set_next (a_next: like next)
-- Set `next' to `a_next'
do
next := a_next
ensure
next_set: next = a_next
end
note
copyright: "2011-2012, Jocelyn Fiat, Javier Velilla, Olivier Ligot, Eiffel Software and others"
license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
source: "[
Eiffel Software
5949 Hollister Ave., Goleta, CA 93117 USA
Telephone 805-685-1006, Fax 805-685-6869
Website http://www.eiffel.com
Customer support http://support.eiffel.com
]"
end

48
library/server/wsf/router/filter/wsf_filtered_service.e Normal file
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note
description: "Summary description for {WSF_FILTERED_SERVICE}."
author: ""
date: "$Date$"
revision: "$Revision$"
deferred class
WSF_FILTERED_SERVICE
feature {NONE} -- Initialization
initialize_filter
-- Initialize `filter'
do
create_filter
setup_filter
end
create_filter
-- Create `filter'
deferred
ensure
filter_created: filter /= Void
end
setup_filter
-- Setup `filter'
require
filter_created: filter /= Void
deferred
end
feature -- Access
filter: WSF_FILTER
-- Filter
;note
copyright: "2011-2012, Jocelyn Fiat, Javier Velilla, Olivier Ligot, Eiffel Software and others"
license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
source: "[
Eiffel Software
5949 Hollister Ave., Goleta, CA 93117 USA
Telephone 805-685-1006, Fax 805-685-6869
Website http://www.eiffel.com
Customer support http://support.eiffel.com
]"
end

75
library/server/wsf/router/filter/wsf_routing_filter.e Normal file
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note
description: "Routing filter."
author: "Olivier Ligot"
date: "$Date$"
revision: "$Revision$"
class
WSF_ROUTING_FILTER
inherit
WSF_FILTER
create
make
feature {NONE} -- Initialization
make (a_router: WSF_ROUTER)
do
router := a_router
ensure
router_set: router = a_router
end
feature -- Access
router: WSF_ROUTER
-- Router
execute_default_action: detachable PROCEDURE [ANY, TUPLE [req: WSF_REQUEST; res: WSF_RESPONSE]]
-- `execute_default' action
feature -- Element change
set_execute_default_action (an_action: like execute_default_action)
-- Set `execute_default_action' to `an_action'
do
execute_default_action := an_action
ensure
execute_default_action_set: execute_default_action = an_action
end
feature -- Basic operations
execute (req: WSF_REQUEST; res: WSF_RESPONSE)
-- Execute the filter
do
if attached router.dispatch_and_return_handler (req, res) then
check router.is_dispatched end
else
execute_default (req, res)
end
execute_next (req, res)
end
execute_default (req: WSF_REQUEST; res: WSF_RESPONSE)
do
if attached execute_default_action as action then
action.call ([req, res])
else
do_nothing
end
end
note
copyright: "2011-2012, Jocelyn Fiat, Javier Velilla, Olivier Ligot, Eiffel Software and others"
license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
source: "[
Eiffel Software
5949 Hollister Ave., Goleta, CA 93117 USA
Telephone 805-685-1006, Fax 805-685-6869
Website http://www.eiffel.com
Customer support http://support.eiffel.com
]"
end

42
library/server/wsf/router/support/starts_with/helpers/wsf_starts_with_filter_handler.e Normal file
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note
description : "Objects that ..."
author : "$Author$"
date : "$Date$"
revision : "$Revision$"
deferred class
WSF_STARTS_WITH_FILTER_HANDLER
inherit
WSF_FILTER_HANDLER
redefine
next
end
WSF_STARTS_WITH_HANDLER
feature -- Access
next: detachable WSF_STARTS_WITH_FILTER_HANDLER
-- Next handler
feature -- Execution
execute_next (a_start_path: READABLE_STRING_8; req: WSF_REQUEST; res: WSF_RESPONSE)
do
if attached next as n then
n.execute (a_start_path, req, res)
end
end
note
copyright: "2011-2012, Jocelyn Fiat, Javier Velilla, Olivier Ligot, Eiffel Software and others"
license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
source: "[
Eiffel Software
5949 Hollister Ave., Goleta, CA 93117 USA
Telephone 805-685-1006, Fax 805-685-6869
Website http://www.eiffel.com
Customer support http://support.eiffel.com
]"
end

42
library/server/wsf/router/support/uri/helpers/wsf_uri_filter_handler.e Normal file
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@@ -0,0 +1,42 @@
note
description : "Objects that ..."
author : "$Author$"
date : "$Date$"
revision : "$Revision$"
deferred class
WSF_URI_FILTER_HANDLER
inherit
WSF_FILTER_HANDLER
redefine
next
end
WSF_URI_HANDLER
feature -- Access
next: detachable WSF_URI_FILTER_HANDLER
-- Next handler
feature -- Execution
execute_next (req: WSF_REQUEST; res: WSF_RESPONSE)
do
if attached next as n then
n.execute (req, res)
end
end
note
copyright: "2011-2012, Jocelyn Fiat, Javier Velilla, Olivier Ligot, Eiffel Software and others"
license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
source: "[
Eiffel Software
5949 Hollister Ave., Goleta, CA 93117 USA
Telephone 805-685-1006, Fax 805-685-6869
Website http://www.eiffel.com
Customer support http://support.eiffel.com
]"
end

42
library/server/wsf/router/support/uri_template/helpers/wsf_uri_template_filter_handler.e Normal file
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@@ -0,0 +1,42 @@
note
description : "Objects that ..."
author : "$Author$"
date : "$Date$"
revision : "$Revision$"
deferred class
WSF_URI_TEMPLATE_FILTER_HANDLER
inherit
WSF_FILTER_HANDLER
redefine
next
end
WSF_URI_TEMPLATE_HANDLER
feature -- Access
next: detachable WSF_URI_TEMPLATE_HANDLER
-- Next handler
feature -- Execution
execute_next (req: WSF_REQUEST; res: WSF_RESPONSE)
do
if attached next as n then
n.execute (req, res)
end
end
note
copyright: "2011-2012, Jocelyn Fiat, Javier Velilla, Olivier Ligot, Eiffel Software and others"
license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
source: "[
Eiffel Software
5949 Hollister Ave., Goleta, CA 93117 USA
Telephone 805-685-1006, Fax 805-685-6869
Website http://www.eiffel.com
Customer support http://support.eiffel.com
]"
end

42
library/server/wsf/router/support/uri_template_with_context/helpers/wsf_uri_template_filter_context_handler.e Normal file
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@@ -0,0 +1,42 @@
note
description : "Objects that ..."
author : "$Author$"
date : "$Date$"
revision : "$Revision$"
deferred class
WSF_URI_TEMPLATE_FILTER_CONTEXT_HANDLER [C -> WSF_HANDLER_CONTEXT create make end]
inherit
WSF_FILTER_HANDLER
redefine
next
end
WSF_URI_TEMPLATE_CONTEXT_HANDLER [C]
feature -- Access
next: detachable WSF_URI_TEMPLATE_CONTEXT_HANDLER [C]
-- Next handler
feature -- Execution
execute_next (ctx: C; req: WSF_REQUEST; res: WSF_RESPONSE)
do
if attached next as n then
n.execute (ctx, req, res)
end
end
note
copyright: "2011-2012, Jocelyn Fiat, Javier Velilla, Olivier Ligot, Eiffel Software and others"
license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
source: "[
Eiffel Software
5949 Hollister Ave., Goleta, CA 93117 USA
Telephone 805-685-1006, Fax 805-685-6869
Website http://www.eiffel.com
Customer support http://support.eiffel.com
]"
end