Truxton etl get message

This function halts the execution of your process until a message arrives on your message queue.

Syntax

uint64_t truxton_etl_get_message( uint64_t etl_handle )

Parameters

etl_handle

The handle created by the truxton_etl_create call.

Return value

A non-zero message handle on success. If zero is returned, a problem has been encountered or your process has been told to shut down.

Sample

#include <TruxtonCAPI.h>

void main( void )
{
    char file_id[ 65 ];
    char description[ 128 ];

    int exit_loop = 0;

    uint64_t message = 0;
    uint64_t app = truxton_etl_create();

    truxton_etl_set_application_name( app, "Sample C ETL" );
    truxton_etl_set_stage_number( app, 42 );
    truxton_etl_set_queue_name( app, "SampleC" );

    truxton_etl_set_description( app, "A sample of how to write an ETL");
    truxton_etl_add_get_description( app, description, sizeof(description));

    while( exit_loop == 0 )
    {
        message = truxton_etl_get_message( app );

        if ( message != 0 )
        {
            // Do something with the message

            memset( file_id, 0x00, sizeof( file_id ) );
            truxton_message_get_file_id( message, file_id, sizeof( file_id ) );

            printf( "Received file id %s\n", file_id );

            truxton_message_destroy( message );
        }
        else
        {
            exit_loop = 1;
        }
    }

    truxton_etl_destroy( app );
}