> My inclination would be to watch for files in a directory, then poll their filesize. If it > remains static for, say, 30 seconds, they we can assume they're complete.
That was my first thought. Then I thought someone had perhaps already done this in a library. But perhaps the code is to trivial to bundle up into a library? I suppose this is the route that I'll take, though it seems inexact. On Sunday, December 11, 2016 at 5:05:52 PM UTC-5, James Reeves wrote: > > Checking whether a file is being written to tends to be very platform > specific. I don't think that there's any Java library that manages it > perfectly, but I could be wrong. > > My inclination would be to watch for files in a directory, then poll their > filesize. If it remains static for, say, 30 seconds, they we can assume > they're complete. > > Alternatively, you could build a simple web app with a drag and drop file > API. Users open the webpage, drag the Excel files to it, and you can then > control the upload and processing directly, even providing feedback. > > - James > > On 11 December 2016 at 19:47, larry google groups <lawrenc...@gmail.com > <javascript:>> wrote: > >> >> I'm in a situation where we allow staff to upload Microsoft Excel files >> to our servers, which we then parse and store the data in DynamoDB. >> >> I've only used file watchers once before, to watch for any change in a >> directory. These seemed to trigger when a file was created in a directory >> -- I recall I then tried to read from such files, but I got an error >> because the file was still being written. I'm curious if there are file >> watchers that I can have trigger when a file is fully uploaded, or fully >> copied? >> >> My goal is to avoid the errors that occur when I try to read from a file >> that is still being written to. >> >> >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clo...@googlegroups.com >> <javascript:> >> Note that posts from new members are moderated - please be patient with >> your first post. >> To unsubscribe from this group, send email to >> clojure+u...@googlegroups.com <javascript:> >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en >> --- >> You received this message because you are subscribed to the Google Groups >> "Clojure" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to clojure+u...@googlegroups.com <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
