Support for concurrencies: none, thread and SCOOP

library/server/ewsgi/connectors/httpd/httpd-safe.ecf

@@ -80,4 +80,10 @@
 		<setting name="concurrency" value="scoop"/>
 		<cluster name="dev" location="dev\" recursive="true"/>
 	</target>
+	<target name="dev_mt" extends="dev">
+		<setting name="concurrency" value="thread"/>
+	</target>
+	<target name="dev_none" extends="dev">
+		<setting name="concurrency" value="none"/>
+	</target>
 </system>

library/server/ewsgi/connectors/httpd/src/httpd/concurrency/none/httpd_connection_handler.e

@@ -31,42 +31,25 @@ feature -- Access
 
 feature -- Execution
 
-	process_incoming_connection (a_socket: HTTPD_STREAM_SOCKET)
+	accept_incoming_connection (a_listening_socket: HTTPD_STREAM_SOCKET)
-			-- Process incoming connection
+		local
-			-- note that the precondition matters for scoop synchronization.
+			cl: HTTPD_STREAM_SOCKET
 		do
 			is_shutdown_requested := is_shutdown_requested or shutdown_requested (server)
 			if is_shutdown_requested then
-				a_socket.cleanup
+					-- Cancel
-			elseif attached server.factory.new_handler as h then
+			elseif attached factory.new_handler as h then
-				process_connection_handler (h, a_socket)
+				cl := h.client_socket
+				a_listening_socket.accept_to (cl)
+				if h.is_connected then
+					h.execute
+				end
 			else
 				check is_not_full: False end
-				a_socket.cleanup
 			end
 			update_is_shutdown_requested
 		end
 
-	process_connection_handler (hdl: HTTPD_REQUEST_HANDLER; a_socket: HTTPD_STREAM_SOCKET)
-		require
-			not hdl.has_error
-		do
-				--| FIXME jfiat [2011/11/03] : should use a Pool of Threads/Handler to process this connection
-				--| also handle permanent connection...?
-
-			hdl.set_client_socket (a_socket)
-			if not hdl.has_error then
---				hdl.set_logger (server)
-				hdl.execute
-			else
-				log ("Internal error (set_client_socket failed)")
-			end
-		rescue
-			log ("Releasing handler after exception!")
-			hdl.release
-			a_socket.cleanup
-		end
-
 	update_is_shutdown_requested
 		do
 			is_shutdown_requested := shutdown_requested (server)
@@ -89,7 +72,7 @@ feature {HTTPD_SERVER_I} -- Status report
 		end
 
 note
-	copyright: "2011-2014, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
+	copyright: "2011-2015, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
 	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
 	source: "[
 			Eiffel Software

library/server/ewsgi/connectors/httpd/src/httpd/concurrency/none/httpd_request_handler.e

@@ -10,15 +10,10 @@ deferred class
 inherit
 	HTTPD_REQUEST_HANDLER_I
 
-feature -- Change
 
-	set_client_socket (a_socket: HTTPD_STREAM_SOCKET)
-		do
-			client_socket := a_socket
-		end
 
 note
-	copyright: "2011-2014, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
+	copyright: "2011-2015, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
 	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
 	source: "[
 			Eiffel Software

library/server/ewsgi/connectors/httpd/src/httpd/concurrency/scoop/httpd_connection_handler.e

@@ -96,7 +96,7 @@ feature {HTTPD_SERVER_I} -- Execution
 		require
 			hdl.is_connected
 		do
-			hdl.separate_execute
+			hdl.safe_execute
 		end
 
 feature {HTTPD_SERVER_I} -- Status report

library/server/ewsgi/connectors/httpd/src/httpd/concurrency/scoop/httpd_request_handler.e

@@ -20,56 +20,21 @@ inherit
 			release as release_pool_item
 		end
 
-feature -- Status report
-
-	is_connected: BOOLEAN
-			-- Is handler connected to incoming request via `client_socket'?
-		do
-			Result := client_socket.descriptor_available
-		end
-
-feature -- Execution
-
-	separate_execute
-		local
-			retried: BOOLEAN
-		do
-			if retried then
-				release (client_socket)
-			else
-				if
-					not has_error and then
-					is_connected
-				then
-					execute (client_socket)
-				end
-				separate_release
-			end
-		rescue
-			retried := True
-			retry
-		end
-
 feature {CONCURRENT_POOL, HTTPD_CONNECTION_HANDLER_I} -- Basic operation		
 
-	separate_release
+	release
-		do
-			release (client_socket)
-		end
-
-	release (a_socket: detachable HTTPD_STREAM_SOCKET)
 		local
 			d: STRING
 		do
-			if a_socket /= Void then
+			if attached internal_client_socket as l_socket then
-				d := a_socket.descriptor.out
+				d := l_socket.descriptor.out
 			else
 				d := "N/A"
 			end
 			debug ("dbglog")
 				dbglog (generator + ".release: ENTER {" + d + "}")
 			end
-			Precursor {HTTPD_REQUEST_HANDLER_I} (a_socket)
+			Precursor {HTTPD_REQUEST_HANDLER_I}
 			release_pool_item
 			debug ("dbglog")
 				dbglog (generator + ".release: LEAVE {" + d + "}")

library/server/ewsgi/connectors/httpd/src/httpd/concurrency/thread/httpd_connection_handler.e

@@ -50,36 +50,27 @@ feature {HTTPD_SERVER_I} -- Execution
 			p.terminate
 		end
 
-	process_incoming_connection (a_socket: HTTPD_STREAM_SOCKET)
+	accept_incoming_connection (a_listening_socket: HTTPD_STREAM_SOCKET)
+		local
+			cl: separate HTTPD_STREAM_SOCKET
 		do
-			if is_shutdown_requested then
+			debug ("dbglog")
-				a_socket.cleanup
+				dbglog (generator + ".ENTER accept_connection {"+ a_listening_socket.descriptor.out +"}")
-			else
+			end
-				process_connection_handler (factory.new_handler, a_socket)
+
+			if is_shutdown_requested then
+					-- cancel
+			elseif attached factory.new_handler as h then
+				cl := h.client_socket
+				a_listening_socket.accept_to (cl)
+				if h.is_connected then
+					pool.add_work (agent h.safe_execute)
+				end
 			end
-		end
 
-	process_connection_handler (hdl: separate HTTPD_REQUEST_HANDLER; a_socket: HTTPD_STREAM_SOCKET)
-		require
-			not hdl.has_error
-		do
 			debug ("dbglog")
-				dbglog (generator + ".ENTER process_connection_handler {"+ a_socket.descriptor.out +"}")
+				dbglog (generator + ".LEAVE accept_incoming_connection {"+ a_listening_socket.descriptor.out +"}")
 			end
-			if not hdl.has_error then
---				hdl.set_logger (server)
---				hdl.set_client_socket (a_socket)
-				pool.add_work (agent hdl.execute (a_socket))
-			else
-				log ("Internal error (set_client_socket failed)")
-			end
-			debug ("dbglog")
-				dbglog (generator + ".LEAVE process_connection_handler {"+ a_socket.descriptor.out +"}")
-			end
-		rescue
-			log ("Releasing handler after exception!")
-			hdl.release (a_socket)
---			hdl.client_socket.cleanup
 		end
 
 feature {HTTPD_SERVER_I} -- Status report
@@ -99,7 +90,7 @@ invariant
 	pool_attached: pool /= Void
 
 note
-	copyright: "2011-2014, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
+	copyright: "2011-2015, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
 	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
 	source: "[
 			Eiffel Software

library/server/ewsgi/connectors/httpd/src/httpd/concurrency/thread/httpd_request_handler.e

@@ -17,23 +17,27 @@ inherit
 
 feature {HTTPD_CONNECTION_HANDLER_I} -- Basic operation		
 
-	release (a_socket: HTTPD_STREAM_SOCKET)
+	release
 		local
 			d: STRING
 		do
 			-- FIXME: for log purpose
-			d := a_socket.descriptor.out
+			if attached internal_client_socket as l_socket then
+				d := l_socket.descriptor.out
+			else
+				d := "N/A"
+			end
 			debug ("dbglog")
 				dbglog (generator + ".release: ENTER {" + d + "}")
 			end
-			Precursor {HTTPD_REQUEST_HANDLER_I} (a_socket)
+			Precursor {HTTPD_REQUEST_HANDLER_I}
 			debug ("dbglog")
 				dbglog (generator + ".release: LEAVE {" + d + "}")
 			end
 		end
 
 note
-	copyright: "2011-2014, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
+	copyright: "2011-2015, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
 	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
 	source: "[
 			Eiffel Software

library/server/ewsgi/connectors/httpd/src/httpd/httpd_request_handler_i.e

@@ -34,7 +34,14 @@ feature {NONE} -- Initialization
 			create request_header.make_empty
 			create request_header_map.make (10)
 
-			is_waiting := False
+		end
+
+feature -- Status report
+
+	is_connected: BOOLEAN
+			-- Is handler connected to incoming request via `client_socket'?
+		do
+			Result := client_socket.descriptor_available
 		end
 
 feature -- Access
@@ -78,8 +85,6 @@ feature -- Settings
 
 feature -- Status report
 
-	is_waiting: BOOLEAN
-
 	has_error: BOOLEAN
 			-- Error occurred during `analyze_request_message'
 
@@ -92,36 +97,60 @@ feature -- Change
 
 feature -- Execution
 
-	execute (a_socket: HTTPD_STREAM_SOCKET)
+	safe_execute
+		local
+			retried: BOOLEAN
+		do
+			if retried then
+				release
+			else
+				if
+					not has_error and then
+					is_connected
+				then
+					execute
+				end
+				release
+			end
+		rescue
+			retried := True
+			retry
+		end
+
+	execute
 		require
-			socket_attached: a_socket /= Void
+			is_connected: is_connected
-			socket_valid: a_socket.is_open_read and then a_socket.is_open_write
-			a_http_socket: not a_socket.is_closed
 		local
 			l_remote_info: detachable like remote_info
 			l_continue: BOOLEAN
+			l_socket: like client_socket
 		do
-			if a_socket.is_closed then
+			l_socket := client_socket
+			check
+				socket_attached: l_socket /= Void
+				socket_valid: l_socket.is_open_read and then l_socket.is_open_write
+			end
+			if l_socket.is_closed then
 				debug ("dbglog")
 					dbglog (generator + ".execute {socket is Closed!}")
 				end
 			else
 				debug ("dbglog")
-					dbglog (generator + ".execute {" + a_socket.descriptor.out + "} ENTER")
+					dbglog (generator + ".execute  socket=" + l_socket.descriptor.out + " ENTER")
 				end
 				from until l_continue loop
-					if a_socket.ready_for_reading then
+					if l_socket.ready_for_reading then
 	            		l_continue := True
 						create l_remote_info
-						if attached a_socket.peer_address as l_addr then
+						if attached l_socket.peer_address as l_addr then
 							l_remote_info.addr := l_addr.host_address.host_address
 							l_remote_info.hostname := l_addr.host_address.host_name
 							l_remote_info.port := l_addr.port
 							remote_info := l_remote_info
 						end
-	            		analyze_request_message (a_socket)
+	            		analyze_request_message (l_socket)
 	            	else
-						log (generator + ".execute {" + a_socket.descriptor.out + "} WAITING")
+						log (generator + ".execute socket=" + l_socket.descriptor.out + "} WAITING")
 	            	end
 				end
 
@@ -132,20 +161,16 @@ feature -- Execution
 						log ("ERROR: invalid HTTP incoming request")
 					end
 				else
-					process_request (a_socket)
+					process_request (l_socket)
 	            end
 	            debug ("dbglog")
-		            dbglog (generator + ".execute {" + a_socket.descriptor.out + "} LEAVE")
+		            dbglog (generator + ".execute {" + l_socket.descriptor.out + "} LEAVE")
 	            end
 			end
---            release (a_socket)
 		end
 
-	release (a_socket: detachable HTTPD_STREAM_SOCKET)
+	release
 		do
-			if a_socket /= Void then
-				a_socket.cleanup
-			end
 			reset
 		end