nl_tokens: 复制指定分片
pl_tokens: function copySliceItem ( params , callback ) { var TaskId = params . TaskId ; var Bucket = params . Bucket ; var Region = params . Region ; var Key = params . Key ; var CopySource = params . CopySource ; var UploadId = params . UploadId ; var PartNumber = params . PartNumber * 1 ; var CopySourceRange = params . CopySourceRange ; var ChunkRetryTimes = this . options . ChunkRetryTimes + 1 ; var self = this ; Async . retry ( ChunkRetryTimes , function ( tryCallback ) { self . uploadPartCopy ( { TaskId : TaskId , Bucket : Bucket , Region : Region , Key : Key , CopySource : CopySource , UploadId : UploadId , PartNumber : PartNumber , CopySourceRange : CopySourceRange , onProgress : params . onProgress , } , function ( err , data ) { tryCallback ( err || null , data ) ; } ) } , function ( err , data ) { return callback ( err , <mask> ) ; } ) ; }