CAS3 and Delius
Service that responds to Community Accommodation Services Tier 3 (CAS3) domain events. The service is responsible for updating Delius with progress of referrals to transitional accommodation for people released from custody without a home.
Business Need
Ensuring the Probation Practitioner has an up-to-date view of activity in the CAS3 service when interacting with the probation case via Delius.
Context Map
Workflows
CAS3 domain events are raised in real time as transitional accommodation referral applications, bookings and residencies are processed in the CAS3 application.
Transitional Accommodation Referral Application
A referral application is created in the CAS3 service which is reflected in a Delius contact. An EXTERNAL_REFERENCE URN is added to the contact in the form urn:hmpps:cas3:application-submitted:{applicationId} using the CAS3 application ID as a unique reference.
| Business Event | Message Event Type / Filter |
|---|---|
| Submission of a accommodation referral application | accommodation.cas3.referral.submitted |
Transitional Accommodation Booking
Accommodation booking activity in the CAS3 service is reflected in a set of Delius contacts representing the progress of the booking. An EXTERNAL_REFERENCE URN is added to the contact in the form urn:hmpps:cas3:booking-{action}:{referralId} using the CAS3 booking ID as a unique reference. Domain events indicating an update to a particular booking activity will find and update the relevant contact identified by the external reference URN.
| Business Event | Message Event Type / Filter |
|---|---|
| Creation of a provisional accommodation booking | accommodation.cas3.booking.provisionally-made |
| Confirmation of an accommodation booking | accommodation.cas3.booking.confirmed |
| Cancellation of an accommodation booking | accommodation.cas3.booking.cancelled |
Transitional Accommodation Booking Update
Updates to accommodation bookings in the CAS3 service are reflected in the Delius contacts previously created to represent the activity. Upon receiving an update event the integration service will find and update the relevant contact identified by the external reference URN.
| Business Event | Message Event Type / Filter |
|---|---|
| An update to the details of an accommodation booking cancellation | accommodation.cas3.booking.cancelled.updated |
Transitional Accommodation Residence
The CAS3 application will raise domain events with details of arrivals and departures from transitional accommodation premises. An EXTERNAL_REFERENCE URN is added to the contact in the form urn:hmpps:cas3:person-{action}:{referralId} using the CAS3 booking ID as a unique reference. The person’s main address is updated to reflect their movement into or out of transitional accommodation.
| Business Event | Message Event Type / Filter |
|---|---|
| Arrival at transitional accommodation | accommodation.cas3.person.arrived |
| Departure from transitional accommodation | accommodation.cas3.person.departed |
Transitional Accommodation Residence Update
The CAS3 application will raise domain events when details of arrivals and departures from transitional accommodation premises are changed. Upon receiving an update event the integration service will find and update the relevant contact identified by the external reference URN.
| Business Event | Message Event Type / Filter |
|---|---|
| Update to transitional accommodation arrival details | accommodation.cas3.person.arrived.updated |
| Update to transitional accommodation departure details | accommodation.cas3.person.departed.updated |
Interfaces
Message Interface
The service responds to HMPPS Domain Event messages via the Queue. The events are raised by the HMPPS Approved Premises API which handles backend integration for the CAS3 UI
Example messages are in the development source tree.
Incoming messages are filtered on eventType by the SQS queue policy