At least back in the day, on Windows, the file size would stay zero until the file was closed.
On Mon, Dec 12, 2016 at 11:19 AM, larry google groups < lawrencecloj...@gmail.com> wrote: > > > 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> >> 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 >>> 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 >>> 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. >>> 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. > -- 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.
