Temas de publicación

Esta muestra de código se puede usar para publicar un mensaje de "Hello World!". mensaje a un tema de Pub/Sub.

Si deseas obtener una colección completa de muestras de código del SDK de ABAP para Google Cloud, consulta el repositorio GoogleCloudPlatform/google-cloud-abap/abap-sdk/ZGOOG_SDK_DOCS_SAMPLES en GitHub.

Muestra de código

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*  Copyright 2023 Google LLC                                         *
*                                                                    *
*  Licensed under the Apache License, Version 2.0 (the "License");   *
*  you may not use this file except in compliance with the License.  *
*  You may obtain a copy of the License at                           *
*      https://www.apache.org/licenses/LICENSE-2.0                   *
*  Unless required by applicable law or agreed to in writing,        *
*  software distributed under the License is distributed on an       *
*  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,      *
*  either express or implied.                                        *
*  See the License for the specific language governing permissions   *
*  and limitations under the License.                                *
**********************************************************************

REPORT zr_publish_topics.

DATA:
  lv_p_projects_id TYPE string,
  lv_p_topics_id   TYPE string,
  ls_input         TYPE /goog/cl_pubsub_v1=>ty_023.

TRY.

* Open HTTP Connection
    DATA(lo_client) = NEW /goog/cl_pubsub_v1( iv_key_name = 'CLIENT_KEY' ).

* Populate relevant parameters
    " Derive project id from the client object
    lv_p_projects_id = lo_client->gv_project_id.
    " Name of the topic to which message will be sent.
    lv_p_topics_id   = 'SAMPLE_TOPIC'.

    "ls_input-messages contains a list of messages that will be published to the Topic.
    APPEND INITIAL LINE TO ls_input-messages ASSIGNING FIELD-SYMBOL(<ls_message>).
    IF <ls_message> IS ASSIGNED .
      "The message is sent as a base64 encoded string in the data field.
      <ls_message>-data     = cl_http_utility=>encode_base64( unencoded = 'Hello World!' ).
    ENDIF.

* Call API method
    CALL METHOD lo_client->publish_topics
      EXPORTING
        iv_p_projects_id = lv_p_projects_id
        iv_p_topics_id   = lv_p_topics_id
        is_input         = ls_input
      IMPORTING
*       ES_RAW           =
        es_output        = DATA(ls_output)
        ev_ret_code      = DATA(lv_ret_code)
        ev_err_text      = DATA(lv_err_text)
        es_err_resp      = DATA(ls_err_resp).

    IF /goog/cl_http_client=>is_success( lv_ret_code ).
      MESSAGE 'Message was successfully published to Pub/Sub!' TYPE 'S'.
    ELSE.
      MESSAGE lv_err_text TYPE 'E'.
    ENDIF.

* Close HTTP Connection
    lo_client->close( ).

  CATCH /goog/cx_sdk INTO DATA(lo_exception).
    MESSAGE lo_exception->get_text( ) TYPE 'E'.
ENDTRY.