I'm wondering is it possible to create NiFi workflows with the existing processors using REST Api or CLI instead of creating workflows in GUI. Is REST Api can be used to create workflows or only to modify and schedule workflows. If we can create workflows using REST api or CLI, any articles or blogs to look into it? Let's say I want to create a workflow which simply takes file form local and put it to hdfs. This can be possible by drag and drop the processors in GUI but Is it possible to do the same using REST API or CLI or any other thing which we can do programatically?  It would be a great help if you guide me regarding this. Thanks a lot. ... View more

Hi Team, I have a zipped file which contains so many text files. I used unpackContent processor to unzip the files. I want to store those unzipped files in another location. But the file names should be replaced with file1.txt, file2.txt, file3.txt and so on. How can I give file names dynamically? I thought updateAttribute can be used in this. But I'm not sure at the expression language to get this done. Can anyone help me to write a expression language in updateAttribute processor or any alternative processor/solution for this.   Thanks. ... View more

Hi Team, I want to rename/modify the filename of the flowfile with the timestamp added to it. Let's say the original flowfile name is file1.txt, I want to change the name of file to be file1_<timestamp>.txt. I used updateAttribute processor to do it. The expression which I gave is   ${filename:substringBeforeLast(‘.’)}_${now():format("yyyy-MM-dd HH:mm:ss.SSS’Z’”)}.${filename:substringAfter('.')}   This Giving me error. I'm bad at Expression language. could anyone help me in this? Thanks.  ... View more