2.1 Rules

MessageNEWXXXXNNNN
Patient block (see 6 - Administration)YDRB3/4/5DRB3/4/5
Donor block (see 6 - Administration)YDRB3/4/5DRB3/4/5
Typing responseYDRB3/4/5DRB3/4/5
Sample responseYDRB3/4/5DRB3/4/5


2.2 How to read the new semantics if you know EMDIS

As previously indicated in Section 2.1, the OpenAPI specification forms an integral component of our updated documentation set. Henceforth, we will refer to this API documentation as "Swagger." You can access it via the following publicly available URL: https://apispecs.wmda.info/

At this address one can find both Search & Match API specifications and Connect API specifications:

Since the communication is now split to communication with WMDA's Search & Match and messaging with other registries, each API request in this semantics document may be represented in two styles:

  1. Communication with S&M

    Most of the Patient API endpoints and all Search API endpoints consist of such messages.

  2. Messaging with other registries

    One Patient API and all Connect APIs are represented in this style.

Wherever suitable, we included EMDIS names of the messages in parentheses, e.g. 5.1 - Extended Typing Request (TYP_REQ).

In contrast to the flat FML messages used in the EMDIS communication, the REST API based Match-Connect communication uses nested (multi-level) data structures. Furthermore, the field designations have been improved, e.g. the EMDIS field REQ_DATE is named as requestDate in the API model classes. 

EMDIS rules from the EMDIS Semantics are modified accordingly to the REST API based approach and are added to each message, where applicable.

The table below shows recommended sets of API endpoints to be implemented depending on your use of services:

                                  Service in use

API endpoint \ 

CommentRecommended for Patient & SearchRecommended for Patient & Search, download RegistryMandatory for ConnectMandatory for Connect, Download RegistryComment
SEARCH & MATCH





PATIENTS





​/patients [POST]Create a patientyesnoyes (PR)no
​/patients [PUT]Update an existing patientnonoyes (PR)no
​/patients [GET]Retrieved patients listnonononoSearch and Match Service Graphical User Interface (GUI) content, optional for participating organisations
​/patients​/{wmdaId} [GET]Retrieve nonononoSearch and Match Service GUI content, optional for participating organisations
/patients/status [PUT]
yesnonono
​/patients​/user [PUT]
nonononoSearch and Match Service GUI content, optional for participating organisations
SEARCH





/searches [POST]
yesnoyes (PR)nofor recommendations see semantics (warning)
/searches/patientSearches/{wmdaId} [GET]
yesnoyes (PR)no
/searches/refreshAllPatientSearches [POST]
nonononoSearch and Match Service GUI content, optional for participating organisations
/searches/{searchId} [GET]
nonononohighly recommended
/searches/refreshAllPatientSearches [POST]
nononono
/searches/searchResults/donors [POST]
yesnoyes (PR)noat least one of those is mandatory, 
/searches/searchResults/cbus [POST]
/searches/{searchId}/searchResults/adcu [GET]
​/searches​/{searchId}​/searchResults​/registries [GET]
nonononoSearch and Match Service GUI content, optional for participating organisations
/searches/{searchId}/searchResults/cbbs [GET]
nonononoSearch and Match Service GUI content, optional for participating organisations
/searches/selected/donors [POST]
nonononoSearch and Match Service GUI content, optional for participating organisations
​/searches​/selected​/cbus [POST]
nonononoSearch and Match Service GUI content, optional for participating organisations
/searches/donors/{searchResultsId} [GET]
nonononoSearch and Match Service GUI content, optional for participating organisations
​/searches​/cbus​/{searchResultsId} [GET]
nonononoSearch and Match Service GUI content, optional for participating organisations
DASHBOARD





for all
nonononoSearch and Match Service GUI content, optional for participating organisations







CONNECT API





ATTACHMENT





​/api​/v1​/attachmentTicket [POST]


nonoOptional for participating organisations
/api/v1/attachmentDownloadURL [POST]


nonoOptional for participating organisations
​/api​/v1​/attachmentDownloadedNotification [POST]


nonoOptional for participating organisations
RETRIEVE





​/api​/v1​/availableMessages [POST]


yesyes(warning) check with Mark
ADMIN





/api/v1/alertRetrieve [GET]


nonorecommended
/api/v1/alertUpdateRetrieve [GET]


nonorecommended
PATIENT





/api/v1/updateRegisteredPatient [POST]


yes (PR)yes (PR)
​/api​/v1​/updateRegisteredPatientRetrieve [GET]


yes (DR)yes (DR)
PING





​/api​/v1​/pingRequest [POST]


nonoOptional for participating organisations
/api/v1/pingRetrieve [POST]


nonoOptional for participating organisations
TEXT MESSAGE





/api/v1/textMessageRequest [POST]


nonoOptional for participating organisations
​/api​/v1​/TextMessageRetrieve [GET]


nonoOptional for participating organisations
REQUEST





/api/v1/genericRequestRequest [POST]


nono
/api/v1/genericRequestRetrieve [GET]


nono
/api/v1/extendedTypingRequestRequest [POST]


yes (PR)yes (PR)
/api/v1/extendedTypingRequestRetrieve [POST]


nonorecommended for DCs with incompletely typed donors
/api/v1/extendedTypingResponseRequest [POST]


nonorecommended for DCs with incompletely typed donors
/api/v1/extendedTypingResponseRetrieve [POST]


yes (PR)yes (PR)
​/api​/v1​/sampleRequestRequest [POST]


yes (PR)yes (PR)
​/api​/v1​/sampleRequestRetrieve [POST]


yes (DR, CBB)yes (DR, CBB)
​/api​/v1​/sampleInfoRequest [POST]


yes (DR, CBB)yes (DR, CBB)
​/api​/v1​/sampleInfoRetrieve [POST]


yes (PR)yes (PR)
​/api​/v1​/sampleArrivalRequest [POST]


yes (DR, CBB)yes (DR, CBB)
​/api​/v1​/sampleArrivalRetrieve [POST]


yes (PR)yes (PR)
/api/v1/sampleResponseRequest [POST]


yes (PR)yes (PR)
/api/v1/sampleResponseRetrieve [POST]


yes (DR, CBB)yes (DR, CBB)
/api/v1/infectiousDiseaseMarkerRequest [POST]


yes (PR)yes (PR)
/api/v1/infectiousDiseaseMarkerRequestRetrieve [POST]


yes (DR)yes (DR)
​/api​/v1​/infectiousDiseaseMarkerResultRequest [POST]


yes (DR)yes (DR)
/api/v1/infectiousDiseaseMarkerResultRetrieve [POST]


yes (PR)yes (PR)
​/api​/v1​/reservationRequestRequest [POST]


yes (PR)yes (PR)(warning) under discussion in user group
​/api​/v1​/reservationRequestRetrieve [POST]


yes (DR)yes (DR)
​/api​/v1​/reservationResponseRequest [POST]


yes (DR)yes (DR)
/api/v1/reservationResponseRetrieve [POST]


yes (PR)yes (PR)
​/api​/v1​/reservationReleaseRequest [POST]


yes (PR)yes (PR)
​/api​/v1​/reservationReleaseRetrieve [POST]


yes (DR)yes (DR)
/api/v1/requestCancellationRequest [POST]


yes (PR)yes (PR)
/api/v1/requestCancellationRetrieve [POST]


yes (DR)yes (DR)
​/api​/v1​/requestRejectedRequest [POST]


yes (DR)yes (DR)
/api/v1/requestRejectedRetrieve [POST]


yes (PR)yes (PR)
​/api​/v1​/resultReminderRequest [POST]


nonorecommended
/api/v1/resultReminderRetrieve [POST]


nonorecommended
GENERAL





/api/v1/messageResponse [POST]


yesyes
​/api​/v1​/messageResponseRetrieve [POST]


yesyes
/api/v1/messageAcknowledgementRequest [POST]




all replaced by the messageResponse
/api/v1/messageAcknowledgementRetrieve [POST]




​/api​/v1​/warningRequest [POST]




/api/v1/warningRetrieve [POST]




​/api​/v1​/messageDenialRequest [POST]




/api/v1/messageDenialRetrieve [POST]




CBU





/api/v1/cordBloodUnitReportRequestRequeston hold

nonoshould be generalised to CBU and ADCUs, etc...
/api/v1/cordBloodUnitReportRequestRetrieveon hold

yes (CBB)yes (CBB)
/api/v1/cordBloodUnitReportResponseRequeston hold

nono
​/api​/v1​/cordBloodUnitReportResponseRetrieveon hold

yes (CBB)yes (CBB)














2.3 API authentication


2.4 General technical design

2.4.1 Message Ordering

The general reasons behind message ordering are:

Message ordering will be realized by:


For the message ordering to work properly there are different responsibilities of the different parties invovled:

The sender is responsible for ensuring the desired order of calls to the Connect APIs.  If API calls are to be scheduled / batched, it is suggested that the sender maintain a queue of outgoing calls / messages so that message sequence is persistent in the event of system failure. Make sure the next message is sent only when the status of the previous one has been marked "OK" by SMC.

Central system provides the same sequence number as below as part of the meta block in the answer in each connect message (messages to another Registry).
Central system provides the same sequence number as above as part of the meta block in the message retrieved by the recieving registry.

The sequence number is part of the meta block. The receiver has to check that the sequence number is correct (no numbers missing) and only process the messages if that is ok. Otherwise go back to the central system and claim the missing message.

Pro:

2.4.2 Messages collection

How to collect all messages and keep the sequence:

The actual messages have to be collected via individual API calls against the different "retrive" APIs. In order to streamline that process a "master"-retrieve API (/api/v2/availableMessages) is provided that returns a list of individual "retrieve" APIs that contain waiting messages for the retrieving registry. The availableMessages API will list per "retrive" API the sequence number(s) of the waiting message(s) in an array. Each "retrive" API will have the optional parameter "sequenceNumber", that allows for an indivual collection of that specific message. If that parameter is left empty all available messages are retrieved (according to the limit set in the parameters). 

It is left for the retrieving registry to choose how to collect the messages:

A) collect an overview via the availableMessages and then collect the messages one by one in the order given by the sequence number or

B) collect an overview via the availableMessages and then collect all waiting messages and ensure the correct order of processing of the messages in the local system

C) pull all "retrieve" APIs without checking first the availableMessages APIs and ensure the correct order of processing of the messages in the local system


An additional "All-in-One Queue" is under discussion:

Such a queue would provide all waiting messages in the order of the sequence number directly as return value of the call not only the information which (sequence number) and what (retrive API) kind of messages are waiting for retrieval.

Technicaly this could be realized by:

This would allow a registry to call just one endpoint to collect all messages.

Limitations:

This option doesn't work for all applications/tooling, like defining custom API connectors in the 365 PowerPlatform. In those cases the same static structure for all call responses on a specific endpoint is not only IBP but also required.

As on WMDA side (propably) all messages are stored in one queue/store anyhow (check with Mark) both options will only effect the exposure of the messages to the registries and not the internal workings on WMDA side.

So implementing the options next to each other might give the registries the choice to pick there prefered solution and might still be fine for WMDA?!?