sp_MSgetmergeadminapplock (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_MSgetmergeadminapplock(int @timeout
, nvarchar @lockmode
, nvarchar @lockowner)

MetaData:

 create procedure sys.sp_MSgetmergeadminapplock  
    @timeout int = -1,  
    @lockmode nvarchar(32) = N'Exclusive',  
    @lock_acquired int = NULL OUTPUT,  
    @lockowner nvarchar(32) = N'Session'  
as  
    set nocount on  
  
    declare @retcode smallint  
    declare @lock_resource nvarchar(255)  
    declare @publisher sysname  
    declare @publisher_db sysname  
    declare @DbPrincipal sysname  
  
    select @publisher = publishingservername()   
    select @publisher_db = DB_NAME()   
  
    select @retcode = 0  
    select @lock_acquired = -1  
  
    exec @retcode = sys.sp_MSreplcheck_publish  
    if @retcode<>0 or @@ERROR<>0  
        return 1  
  
    --  use the dbowner role  
    select @DbPrincipal = N'db_owner'  
    select @lock_resource = N'MSinternal_repl_merge_admin_' + convert(nvarchar(6), db_id())   
  
    exec @retcode = sp_getapplock @Resource = @lock_resource,  
                                  @LockMode = @lockmode,  
                                  @LockOwner = @lockowner,  
                                  @LockTimeout = @timeout, --  wait till the the given @timeout time to get it  
                                  @DbPrincipal = @DbPrincipal  
    if @@error<>0 or @retcode<0 --  lock was not acquired  
    begin  
        raiserror(20712, 16, -1, @publisher_db)  
        select @retcode = 1  
        select @lock_acquired = -1  
    end  
    else  
        select @lock_acquired = 1  
  
    return @retcode