stdin/stdout don't behave like UNIX with heroku run

[ddollar]

Trying to run this command

cat /tmp/test.md | heroku run -a dx-dashboard "curl -s -F page=@- http://mantastic.herokuapp.com"

The pipes should all get hooked up correctly in a non-interactive mode to let stdin/stdout work properly with the shell container of heroku run.

Let me know if this doesn't make sense and I can try to elaborate.

[ddollar]

/cc @ryandotsmith

[kennethreitz]

+100

[kennethreitz]

We could detect if stdin is a tty and suppress the "attaching process to app" message when piping things around as well

[ejfinneran]

+1

[will]

For what it's wroth, pipes work with pg:psql

[felixyz]

@ddollar
I suppose I've run into the same problem. I wanted to pipe a list from a file over to my app on Heroku to populate the db. I do NOT want to check the list into git.

cat my_list | heroku run rake blabla:seed

This just outputs my list but the data never reaches my rake task (which is checking STDIN).

In my rake task, I specifically check that STDIN is not tty (I only want to check for piped input). Not sure how that relates to what @kennethreitz is saying above.

Any and all suggestions would be appreciated.

[wuputah]

echo echo echo | heroku run bash is an easy failing test case for this. Even though the TTY is disconnected, the connection / bash acts as if it does, leading to weird behavior. I think the problem may lie in the rendezvous protocol which doesn't transmit this information and therefore it cannot run the process in the right way.

(But I also don't know much about TTYs.)

[benrobster]

+1 (see http://stackoverflow.com/questions/15041853/running-loaddata-on-heroku-without-adding-the-data-file-to-repository )

[kgilpin]

+1 wish stdin could pipe to heroku run

[admin-ns]

For some types of operations, e.g., loading data or fixtures into a site, the alternatives to stdin are pretty lame: I either have to upload the data to a public file server and write my import utility to access that (thank goodness for python requests library ;) ) , or I have to commit the file to my repository temporarily, push, remove, commit. For some types of regular operations I'd like to do, neither of these is a very viable option.

[amacneil]

👍

[mikehale]

bump 👍

[roberts81]

👍 👍

[wuputah]

Merged #811.