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db v5: prep for D-GSM: add vlr_via_proxy and sgsn_via_proxy

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D-GSM will store in the HLR DB whether a locally connected MSC has attached the
subscriber (last_lu_seen[_ps]), or whether the attach happened via a GSUP proxy
from a different site.

Add columns for this separately in this patch.

Change-Id: I98c7b3870559ede84adf56e4bf111f53c7487745
This commit is contained in:
Neels Hofmeyr
2019-11-25 03:59:50 +01:00
parent 939f508f00
commit 04c2375b38
5 changed files with 75 additions and 14 deletions
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9
sql/hlr.sql
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@@ -43,7 +43,12 @@ CREATE TABLE subscriber (
-- Timestamp of last location update seen from subscriber
-- The value is a string which encodes a UTC timestamp in granularity of seconds.
last_lu_seen TIMESTAMP default NULL,
last_lu_seen_ps TIMESTAMP default NULL
last_lu_seen_ps TIMESTAMP default NULL,
-- When a LU was received via a proxy, that proxy's hlr_number is stored here,
-- while vlr_number reflects the MSC on the far side of that proxy.
vlr_via_proxy VARCHAR,
sgsn_via_proxy VARCHAR
);
CREATE TABLE subscriber_apn (
@@ -78,4 +83,4 @@ CREATE UNIQUE INDEX idx_subscr_imsi ON subscriber (imsi);
-- Set HLR database schema version number
-- Note: This constant is currently duplicated in src/db.c and must be kept in sync!
PRAGMA user_version = 4;
PRAGMA user_version = 5;