98 lines
4.8 KiB
Plaintext
98 lines
4.8 KiB
Plaintext
digraph G {
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rankdir=TB
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labelloc=t; label="HLR Proxy to Home HLR FSM"
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top,to_top1,to_top2,to_top3,to_top4,to_top5[shape=invtriangle,label="(A)"]
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top->junction_resolve_home_hlr
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at_clear,to_clear1,to_clear2 [shape=invtriangle,label="(X)"]
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mm_fsm [shape=box3d,label="Proxy MM FSM"]
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mm_fsm -> junction_resolve_home_hlr [style=invisible,arrowhead=none]
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WAIT_HOME_HLR_RESOLVED [style=bold]
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WAIT_UPDATE_LOCATION_RESULT [style=bold]
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WAIT_SEND_AUTH_INFO_RESULT [style=bold]
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IDLE [style=bold]
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CLEAR [style=bold]
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new [label="proxy_cache_subscr_new()\n/ proxy_cache_subscr_from_db()",shape=box]
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{
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rank=same;
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junction_resolve_home_hlr [shape=diamond,label="Home HLR\n known?"]
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junction_confirm_home_hlr [shape=diamond,label="mslookup\n for home HLR\n very old?"]
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junction_update_location [shape=diamond,label="Did MM FSM emit another\n HOME_EV_CONFIRM_LU?"]
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junction_auth_info [shape=diamond,label="Auth tuple\ncache full of\nfresh tuples?"]
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}
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new -> {junction_resolve_home_hlr, mm_fsm}
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junction_resolve_home_hlr -> junction_confirm_home_hlr [label="known"]
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junction_resolve_home_hlr -> action_mslookup [label="wat"]
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action_mslookup [shape=larrow,label="start mslookup"]
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action_mslookup -> WAIT_HOME_HLR_RESOLVED
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WAIT_HOME_HLR_RESOLVED -> rx_mslookup_res [arrowhead=none]
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rx_mslookup_res [shape=rarrow,label="home HLR\n resolved"]
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rx_mslookup_res -> to_top1
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WAIT_HOME_HLR_RESOLVED -> CLEAR [style=dashed,label=Timeout]
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junction_update_location -> action_lu_req [label="need data\n/\nneed to confirm LU"]
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action_lu_req [shape=larrow,label="Tx GSUP Update Location Req\nto home HLR"]
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action_lu_req -> WAIT_UPDATE_LOCATION_RESULT
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WAIT_UPDATE_LOCATION_RESULT->rx_isd [arrowhead=none]
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rx_isd [shape=rarrow,label="Rx GSUP\n Insert Subscriber\n Data Request\nfrom home HLR"]
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rx_isd -> emit_rx_subscr_data
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emit_rx_subscr_data [shape=lpromoter,label="emit\n MM_EV_RX_SUBSCR_DATA"]
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emit_rx_subscr_data->action_tx_isd_res
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action_tx_isd_res -> WAIT_UPDATE_LOCATION_RESULT
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action_tx_isd_res [shape=larrow,label="Tx GSUP Insert Subscriber Data Result\nto home HLR"]
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WAIT_UPDATE_LOCATION_RESULT -> rx_lu_res [arrowhead=none]
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rx_lu_res [shape=rarrow,label="Rx GSUP Update\n Location Result\nfrom home HLR"]
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rx_lu_res -> to_top2
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junction_update_location -> junction_auth_info [label="data known,\nLU confirmed"]
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WAIT_UPDATE_LOCATION_RESULT->junction_lu_failed [label="Timeout "]
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junction_lu_failed [shape=diamond,label="has home HLR\never confirmed\na LU before?"];
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junction_lu_failed -> to_clear2 [label="never\nconfirmed",style=dashed]
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junction_lu_failed -> note_lu_failed [label="has\nconfirmed\nbefore"]
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note_lu_failed [shape=note,label="Home HLR is\ntemporarily unreachable,\n just carry on."]
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note_lu_failed -> to_top3
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junction_confirm_home_hlr -> action_mslookup_confirm [label="very old"]
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junction_confirm_home_hlr -> junction_update_location [label="fair enough"]
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action_mslookup_confirm [shape=larrow,label="start mslookup"]
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note_mslookup_confirm [shape=note,label="Result evaluated in IDLE state.\nIf no mslookup result comes\n back, the home HLR is\ntemporarily unreachable:\ncontinue anyway.\nThis is sanity checking for\na *modified* home HLR"]
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action_mslookup_confirm -> note_mslookup_confirm [arrowhead=none,style=dotted]
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action_mslookup_confirm -> junction_update_location
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junction_auth_info -> action_sai_req [label="need more tuples"]
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junction_auth_info -> set_idle_timeout [label="cache is fresh"]
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action_sai_req [shape=larrow,label="Tx GSUP\n Send Auth Info Request\n to home HLR"]
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action_sai_req -> WAIT_SEND_AUTH_INFO_RESULT
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WAIT_SEND_AUTH_INFO_RESULT->rx_sai_res[arrowhead=none]
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rx_sai_res[shape=rarrow,label="Rx GSUP\n Send Auth Info\n Result\nfrom home HLR"]
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rx_sai_res -> emit_rx_tuples
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emit_rx_tuples [shape=lpromoter,label="emit\n MM_EV_RX_AUTH_TUPLES"]
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emit_rx_tuples -> to_top4
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WAIT_SEND_AUTH_INFO_RESULT->set_idle_timeout[label="Timeout",style=dashed]
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set_idle_timeout [shape=diamond,label="Select IDLE\n timeout:\nmin(\nretry tuples,\n confirm mslookup)"]
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set_idle_timeout -> IDLE
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IDLE -> rx_mslookup_confirm_res [arrowhead=none]
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rx_mslookup_confirm_res [shape=rarrow,label="Rx mslookup result"]
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rx_mslookup_confirm_res -> junction_compare_home_hlr
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junction_compare_home_hlr [shape=diamond,label="mslookup result\n matches home HLR\n on record?"]
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junction_compare_home_hlr -> set_idle_timeout [label="matches"]
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junction_compare_home_hlr -> to_clear1 [label="mismatch",style=dashed]
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IDLE -> to_top5 [label="Timeout"]
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IDLE -> {rx_ev_check_tuples,rx_ev_confirm_lu} [arrowhead=none]
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rx_ev_check_tuples [shape=rpromoter,label="receive\n HOME_EV_CHECK_TUPLES"]
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rx_ev_confirm_lu [shape=rpromoter,label="receive\n HOME_EV_CONFIRM_LU"]
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{rx_ev_check_tuples,rx_ev_confirm_lu} -> to_top5
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at_clear -> CLEAR
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CLEAR -> emit_subscr_invalid -> TERM
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emit_subscr_invalid [shape=lpromoter,label="emit\n MM_EV_SUBSCR_INVALID"]
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TERM[shape=octagon][style=bold]
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}
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