此代码示例可用于将“Hello World!”消息发布到 Pub/Sub 主题。
如需查看 SAP BTP 版本的 ABAP SDK for Google Cloud 代码示例的全面集合，请参阅 GitHub 上的代码示例代码库。
如需查看本地或任何云版本的 ABAP SDK for Google Cloud 代码示例的全面集合，请参阅 GitHub 上的代码示例代码库。
代码示例
SAP BTP 版本
" --------------------------------------------------------------------
" Copyright 2024 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. -
" --------------------------------------------------------------------
CLASS zcl_cs_publish_topics DEFINITION
PUBLIC FINAL
CREATE PUBLIC.
PUBLIC SECTION.
INTERFACES if_oo_adt_classrun.
ENDCLASS.
CLASS zcl_cs_publish_topics IMPLEMENTATION.
METHOD if_oo_adt_classrun~main.
" Data Declaration
DATA lv_p_projects_id TYPE string.
DATA lv_p_topics_id TYPE string.
DATA ls_input TYPE /goog/cl_pubsub_v1=>ty_023.
TRY.
" Open HTTP Connection
DATA(lo_pubsub) = NEW /goog/cl_pubsub_v1( iv_key_name = 'PUBSUB_DEMO' ).
" Populate relevant parameters
" Derive project id from the client object
lv_p_projects_id = lo_pubsub->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
lo_pubsub->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_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 ).
out->write( | Message was successfully published to Pub/Sub!| ).
ELSE.
out->write( | Error occurred: { lv_err_text }| ).
ENDIF.
" Close HTTP Connection
lo_pubsub->close( ).
CATCH /goog/cx_sdk INTO DATA(lo_exception).
lv_err_text = lo_exception->get_text( ).
out->write( |Exception occurred: { lv_err_text } | ).
ENDTRY.
ENDMETHOD.
ENDCLASS.
本地或任何云版本
**********************************************************************
* 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.