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db v4: add column last_lu_seen_ps

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Location Updating procedures from both CS and PS overwrite the same
last_lu_seen field of a subscriber. For upcoming D-GSM it will be important to
distinguish those, because only CS attaches qualify for MSISDN lookup.

Add column last_lu_seen_ps, and upon PS LU, do not overwrite last_lu_seen, so
that last_lu_seen now only reflects CS LU.

In the VTY, dump both LU dates distinctively.

Change-Id: Id7fc50567211a0870ac0524f6dee94d4513781ba
This commit is contained in:
Neels Hofmeyr
2019-11-20 02:36:35 +01:00
parent abdfdb8a4a
commit 07e1602d2d
6 changed files with 76 additions and 32 deletions
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5
sql/hlr.sql
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@@ -42,7 +42,8 @@ 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 TIMESTAMP default NULL,
last_lu_seen_ps TIMESTAMP default NULL
);
CREATE TABLE subscriber_apn (
@@ -77,4 +78,4 @@ 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 = 3;
PRAGMA user_version = 4;