This feature retrieves Circuit Switched routing information from the Cassandra Database and stores it into session state.

Feature cheat sheet

Feature Name Network Operator Data Used in PlanId(s) Stateful or Stateless POJO Feature or SBB Feature

IPSMGWFetchRoutingInfoCassandra

Yes

MTFSM_PS,MTFSM_CS,MTFSM_PS_CS,MTFSM_CS_PS

Stateless

POJO

Session Input variables

The feature reads the following fields in Session State

Session State variable name Variable type Comments
MTFSMDeliveryOrder

com.opencloud.sentinel.ipsmgw.shared.config.profile.DeliveryOrder

One of CS_ONLY, PS_ONLY, CS_THEN_PS, PS_THEN_CS Current DeliveryOrder based on configuration and available routing info, correpsonding to current selection key plan Id. Set PSDeliveryStatus to FAILED and report featureHasFinished

Session output variables

The IPSMGWFetchRoutingInfoCassandra feature populates the following fields in the Session State

Session State variable name Variable type Comments
MSISDN

String

The MSISDN

IMSI

String

The MT Correlation ID/IMSI used as the key for the row

SRI4SMArgV1

MAPSendRoutingInfoForSMArg

The encoded java object representing v1 SRI4SM arg, if the application context was v1

SRI4SMArgV2

MAPSendRoutingInfoForSMArg

The encoded java object representing v2 SRI4SM arg, if the application context was v2

SRI4SMArgV3

MAPRoutingInfoForSM_Arg

The encoded java object representing v3 SRI4SM arg, if the application context was v3

SRI4SMResV1

MAPSendRoutingInfoForSMRes

The encoded java object representing v1 SRI4SM result, if the application context was v1

SRI4SMResV2

MAPSendRoutingInfoForSMRes

The encoded java object representing v2 SRI4SM result, if the application context was v2

SRI4SMResV3

MAPRoutingInfoForSM_Res

The encoded java object representing v3 SRI4SM result, if the application context was v3

SRI4SMResAppContext

String

A string of the application context name

CorrelatedMTFSM

boolean

Set to true if the lookup from Cassandra returned a matching row.

MTFSMDeliveryOrder

DeliveryOrder

Set to PS_ONLY when no CS routing info was present in cassandra row

SentinelSelectionKey

SentinelSelectionKey

Plan Id field will be set to MTFSM_PS when no CS routing info was present in cassandra row

SRI4SMResult

SRI4SMResult

Set to NOT_ATTEMPTED if there is no IMSI in session state or SUCCESS if there is.

Statistics

IPSMGWFetchRoutingInfoCassandra statistics are tracked by the sentinel.ipsmgw SBB and can be found under the following parameter set in REM:
SLEE-Usage → sentinel.ipsmgw service → sentinel.ipsmgw SBB → feature → IPSMGWFetchRoutingInfoCassandra
or with rhino-stats:
"SLEE-Usage.Services.ServiceID[name=sentinel.ipsmgw,vendor=OpenCloud,version=4.0.0].SbbID[name=sentinel.ipsmgw,vendor=OpenCloud,version=4.0.0].feature.IPSMGWFetchRoutingInfoCassandra"

Name Description
FetchRoutingInfoSuccess

Incremented when a matching record is returned from Cassandra

FetchRoutingInfoFailure

Incremented when a matching record is not returned from Cassandra

Configuration

The feature uses the IPSMGWRoutingInfoCassandraConfigProfileTable profile to configure whether tracing is enabled for Cassandra queries.

Behaviour

The feature is triggered on MAP MT Forward Short Message (MT-FSM) requests. The IMSI in the MT-FSM is used as the 'mtcorrelationid' primary key field when querying Cassandra. The contents of the query result are written into session state, and used to facilitate delivery of the SMS.

If a row is not found, an UnidentifiedSubscriber error is returned to the SMSC and the feature ends.

If a row is found, the Store Routing Info Cassandra feature has written all available CS routing data to Cassandra using the schema detailed here.

If the row includes circuit switched routing information for SMS (i.e. the SRI request and response), the feature ends. If the row does not include CS routing info or the any of the CS routing info fields such as the arg or the res could not be decoded, but PS is one of the options in the current MTFSMDeliveryOrder session state field, the plan Id in the selection key is set to MTFSM_PS and the MTFSMDeliveryOrder is set to PS_ONLY - otherwise an unidentifiedSubscriber error is sent in response to the MT-FSM.

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Sentinel IP-SM-GW Version 4.0.0