Introduction:- In various requirement , we send SAP BW data to Amazon S3 through IICS ( Informatica Intelligent Cloud Services). There is a challenge in data refresh synchronization between SAP BW and IICS as those two jobs are triggered and run in two different servers. As a work around, we have to trigger the IICS job manually every time after SAP BW data got refreshed. There is no such process automation between those two jobs.

Proposed Solution: – We can communicate with IICS server from SAP through REST APIs.  Custom code will use to trigger the IICS job from SAP. This will be an automated process where both SAP job and IICS job execution can be controlled from SAP server.

High level Technical Solution: –

1. Use Login API to login to IICS server from SAP and get the session related information.
2. Pass IICS job and session related information through job trigger API and trigger the job
3. Include this custom code in BW process chain

Process flow.

Sample Code snippet: –

• Post Request for login.

DATA: lv_url         TYPE string VALUE 'https://***********/v3/login',
      lo_http_client TYPE REF TO if_http_client,
      lo_rest_client TYPE REF TO cl_rest_http_client,
      lo_request     TYPE REF TO if_rest_entity.

CALL METHOD cl_http_client=>create_by_url
  EXPORTING
    url                = lv_url          " URL
*   proxy_host         =                  " Logical destination (specified in function call)
*   proxy_service      =                  " Port Number
*   ssl_id             =                  " SSL Identity
*   sap_username       =                  " ABAP System, User Logon Name
*   sap_client         =                  " R/3 system (client number from logon)
*   proxy_user         =                  " Proxy user
*   proxy_passwd       =                  " Proxy password
  IMPORTING
    client             = lo_http_client             " HTTP Client Abstraction
  EXCEPTIONS
    argument_not_found = 1                " Communication Parameters (Host or Service) Not Available
    plugin_not_active  = 2                " HTTP/HTTPS Communication Not Available
    internal_error     = 3                " Internal Error (e.g. name too long)
    OTHERS             = 4.

IF sy-subrc = 0.
  lo_http_client->request->set_version( lv_protocol ).
  lo_rest_client = NEW #( io_http_client = lo_http_client ).
  lo_request = lo_rest_client->if_rest_client~create_request_entity( ).
ENDIF.

lo_rest_client->if_rest_client~set_request_header(
EXPORTING
   iv_name  = 'ACCEPT'
   iv_value = 'APPLICATION/JSON'
   ).

lo_rest_client->if_rest_client~set_request_header(
EXPORTING
  iv_name  = 'CONTENT-TYPE'
  iv_value = 'APPLICATION/JSON'
  ).

CONCATENATE '{' '"username"' ':' '"' lv_user '"' ',' '"password"' ':' '"' lv_pwd '"' '}' INTO lv_body.
lo_request->set_string_data( lv_body ).
lo_rest_client->if_rest_resource~post( lo_request ).

• Get request to get the Session ID related information.

DATA: lo_response TYPE REF TO if_rest_entity,
      lv_response TYPE string.

lo_response = lo_rest_client->if_rest_client~get_response_entity( ).
lv_http_status = lo_response->get_header_field( '~status_code' ).
lv_reason = lo_response->get_header_field( '~status_reason' ).
lv_content_length = lo_response->get_header_field( 'content-length' ).
lv_location = lo_response->get_header_field( 'location' ).
lv_content_type = lo_response->get_header_field( 'conent-type' ).
lv_response = lo_response->get_string_data( ).

IF lv_http_status = lc_status.
  CALL METHOD /ui2/cl_json=>deserialize
    EXPORTING
      json         = lv_response               " JSON string
      pretty_name  = /ui2/cl_json=>pretty_mode-user              " Pretty Print property names
      assoc_arrays = abap_true               " Deserialize associative array as tables with unique keys
    CHANGING
      data         = lr_data.             " Data to serialize

  IF lr_data IS BOUND.
    ASSIGN lr_data->* TO <data>.
    ASSIGN COMPONENT `PRODUCTS` OF STRUCTURE <data> TO <results>.
    ASSIGN <results>->* TO <table>.

    LOOP AT <table> ASSIGNING <structure>.
      ASSIGN <structure>->* TO <data>.
      ASSIGN COMPONENT `BASEAPIURL` OF STRUCTURE <data> TO <field>.
      IF <field> IS ASSIGNED.
        lr_data1 = <field>.
        ASSIGN lr_data1->* TO <field_value>.
        ls_final-baseapiurl = <field_value>.
      ENDIF.
      UNASSIGN: <field> , <field_value>.
      APPEND ls_final TO gt_response.
    ENDLOOP.

    ASSIGN lr_data->* TO <data>  .
    ASSIGN COMPONENT `USERINFO` OF STRUCTURE <data> TO <results>.
    ASSIGN <results>->* TO <data>.

    ASSIGN COMPONENT `SESSIONID` OF STRUCTURE <data> TO <field>.

    IF <field> IS ASSIGNED.
      lr_data = <field>.
      ASSIGN lr_data->* TO <field_value>.
      ls_final-sessionid = <field_value>.
    ENDIF.
    UNASSIGN: <field>, <field_value>.

    ASSIGN COMPONENT `STATUS` OF STRUCTURE <data> TO <field>.
    IF <field> IS ASSIGNED.
      lr_data = <field>.
      ASSIGN lr_data->* TO <field_value>.
      ls_final-status = <field_value>.
    ENDIF.
    UNASSIGN: <field>, <field_value>.

    APPEND ls_final TO gt_response.
  ENDIF.
ENDIF.

• Post request for task execution

CONCATENATE '{' '"@type"' ':' '"job"' ' ,' '"taskName"' ':' '"' gv_jobname  '"'  ' ,' '"taskType"' ':'  '"MTT"' '}' INTO lv_body   .

lo_rest_client->if_rest_client~set_request_header(
  EXPORTING
     iv_name  = 'IcSessionId'
      iv_value = im_ssnid
      ).
lo_request->set_string_data( lv_body ).
lo_rest_client->if_rest_resource~post( lo_request ).

Conclusion:

In this blog post, I demonstrated how to communicate IICS server from SAP through REST APIs and trigger IICS task from SAP. Hope this blog post will help BW developers to achieve similar functionality.