Sorry, I should have been more clear. I have a flow file with conten. To that flow file, I need to add the content of a disk file as an attribute without losing the original content.
Does that better explain things? Chris McDermott Remote Business Analytics STaTS/StoreFront Remote HPE Storage Hewlett Packard Enterprise Mobile: +1 978-697-5315 [cid:image001.png@01D1FEB1.02CE0E20] From: Matt Burgess <mattyb...@gmail.com> Reply-To: "users@nifi.apache.org" <users@nifi.apache.org> Date: Wednesday, August 24, 2016 at 5:13 PM To: "users@nifi.apache.org" <users@nifi.apache.org> Subject: Re: Need to read a small local file into a flow file property Chris, Are you looking to have a flow file that has its own content also as an attribute? With EvaluateJsonPath, are you taking in the entire document? If so, you could use ExtractText with a regex that captures all text and puts it in an attribute, I believe the content of the flow file is untouched. Please let me know if I've misunderstood your use case, I'm a little confused as to why you have two paths and step 3. Wouldn't #1 and #2 (with "flowfile-attribute" as the Destination) read the file into an attribute and also keep it in the content? Regards, Matt On Wed, Aug 24, 2016 at 4:33 PM, McDermott, Chris Kevin (MSDU - STaTS/StorefrontRemote) <chris.mcderm...@hpe.com<mailto:chris.mcderm...@hpe.com>> wrote: Hi folks, I’m looking for some ideas here. I need to read the content of a small local file info a flow file attribute. I can’t find a processor that does this. Did I miss one that does? So without one of these I’ve been trying to do this using a MergeContent processor. First, I assign a correlation UUID and store it in an attribute I split by file down two processing paths. The left hand path goes straight to the MergeContentProcessors. In the right hand path I 1. Read the content of the local file using FetchFile 2. Pull the content of the FlowFile into an attribute using EvaluateJSONPath 3. Clear the content of the FlowFile using ReplaceText Then I combine the left and right legs using MergeContent using the assigned correlation UUID to merge the files. This generally works, except when it doesn’t. ☺ The problem seems to be that the left hand side of the stream flows relatively faster than the right hand path, which makes sense. This can lead to the “bins” in the MergeContent processor being reused before the file in the bin can be merged with the file traveling down the right hand path causing Uncorrelated files are then sent to the merged output. Does it sound like I am using the MergeContent processor in the right way? Any other ideas? Thanks in advance, Chris McDermott Remote Business Analytics STaTS/StoreFront Remote HPE Storage Hewlett Packard Enterprise Mobile: +1 978-697-5315 [cid:image002.png@01D1FEB1.02CE0E20]
