109 lines
3.3 KiB
Smalltalk
109 lines
3.3 KiB
Smalltalk
"
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(C) 2012 by Holger Hans Peter Freyther
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All Rights Reserved
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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"
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OsmoGSM.GSM48CMServiceReq extend [
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openTransactionOn: aCon sapi: aSapi [
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| tran |
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<category: '*-OsmoMSC-GSM'>
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"This is weird. We can accept or reject the service."
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tran := (GSMCMServiceRequest on: aSapi with: self ti)
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con: aCon; yourself.
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aCon openTransaction: tran with: self.
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]
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]
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OsmoGSM.GSM48MSG extend [
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dispatchForCMOn: aCon [
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<category: '*-OsmoMSC-GSM'>
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self logError: '%1(srcref:%2) unknown dispatch for CM Service Request'
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% {self class. aCon srcref} with: #bsc.
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^ false
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]
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]
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OsmoGSM.GSM48CCEmergencySetup extend [
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dispatchForCMOn: aCM [
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| call |
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<category: '*-OsmoMSC-GSM'>
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"Start the Emergency Call"
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call := (GSMEmergencyCall on: 0 with: self ti)
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con: aCM con; yourself.
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aCM con openTransaction: call with: self.
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"The CMServiceRequest transaction can go away now."
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^ true
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]
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]
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GSMTransaction subclass: GSMCMServiceRequest [
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| timeout service state |
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<category: 'OsmoMSC-GSM'>
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<comment: 'I am used by the MS to ask for a service. I can check
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if we want to have this service and Accept/Reject it. Atfer this
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I need to wait a bit for the actual service to be started.'>
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GSMCMServiceRequest class >> stateNull [ <category: 'states'> ^ #null ]
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GSMCMServiceRequest class >> stateWaitService [ <category: 'states'> ^ #service ]
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canHandle: aMsg sapi: aSapi [
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"TODO: check if there are other transactions that should be called? Or
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deal with it differently?"
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^ true
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]
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initialize [
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<category: 'creation'>
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state := self class stateNull.
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]
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start: aCMServiceRequest [
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| accept |
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state := self class stateWaitService.
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accept := OsmoGSM.GSM48CMServiceAccept new.
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timeout := Osmo.TimerScheduler instance
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scheduleInSeconds: 5 block: [con takeLocks: [self timeOut]].
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self nextPutSapi: accept.
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]
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dispatch: aMsg [
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| res |
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"I am now getting the real MO-request. Let's see how we can
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morph it into a real request."
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res := aMsg dispatchForCMOn: self.
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res ifFalse: [^self].
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"We are done. Remove ourselves from the list."
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timeout cancel.
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con removeTransaction: self
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]
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cancel [
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timeout cancel.
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^ super cancel
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]
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timeOut [
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self logError: 'GSMCMServiceRequest(srcref:%1) timeout in state %2'
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% {con srcRef. state} area: #bsc.
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con removeTransaction: self.
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]
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]
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