sp_MSget_log_shipping_new_sessionid (Transact-SQL MetaData) Definition

Please note: that the following source code is provided and copyrighted by Microsoft and is for educational purpose only.
The meta data is from an SQL 2012 Server.

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Definition:

sys.sp_MSget_log_shipping_new_sessionid(uniqueidentifier @agent_id
, tinyint @agent_type)

MetaData:

 create procedure sys.sp_MSget_log_shipping_new_sessionid   
(  
    @agent_id uniqueidentifier      --  primary/secondary ID  
    ,@agent_type tinyint                    --  0 = Backup, 1 = Copy, 2 = Restore  
    ,@session_id int output  
)  
as  
begin  
    set nocount on  
    declare @retcode int  
                ,@agent_idstring sysname  
  
    --   
    --  security check  
    --   
    exec @retcode = sys.sp_MSlogshippingsysadmincheck  
    if (@retcode != 0 or @@error != 0)  
        return 1  
    --   
    --  validate agent_type  
    --   
    if (@agent_type not in (0,1,2))  
    begin  
        raiserror(21055, 16, -1, '@agent_type','sp_MSget_log_shipping_new_sessionid')  
        return 1  
    end  
    --   
    --  validate agent  
    --   
    if (sys.fn_MSvalidatelogshipagentid(@agent_id, @agent_type) = 0)  
    begin  
        select @agent_idstring = cast(@agent_id as sysname)  
        raiserror(32016, 16, 1, @agent_idstring, @agent_type)  
        return 1  
    end  
    --   
    --  get the current session id  
    --   
    select @session_id = isnull(max(session_id),0) + 1  
    from msdb.dbo.log_shipping_monitor_history_detail   
    where agent_id = @agent_id and agent_type = @agent_type  
    --   
    --  all done  
    --   
    return 0  
end