File descriptor leak in storlet-gateway

[Akihito Takai]

we found that storlet_gateway leaks the file descriptors of "input_data_read_fd" in PUT request of storlet python.

# sudo pgrep swift-proxy | xargs -n 1 sudo lsof -p | grep pipe
# for x in `seq 5` ; do curl -H 'X-Auth-Token: XXXXXXXXXXXX' -s -w '%{http_ code}\n' -X PUT http://127.0.0.1:80/v1/AUTH_XXXXXXXXXXX/myobjects/test_object -T ./obj -H 'X-Run-Storlet: simple.py' ; done
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# sudo pgrep swift-proxy | xargs -n 1 sudo lsof -p | grep pipe
swift-pro 24736 swift 25r FIFO 0,8 0t0 371809 pipe
swift-pro 24736 swift 26r FIFO 0,8 0t0 368541 pipe
swift-pro 24736 swift 27r FIFO 0,8 0t0 371279 pipe
swift-pro 24736 swift 28r FIFO 0,8 0t0 371819 pipe
swift-pro 24736 swift 29r FIFO 0,8 0t0 371824 pipe

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/388288

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/388288
Committed: https://git.openstack.org/cgit/openstack/storlets/commit/?id=3ea09dea15147634ea5a5abff752a329464d9789
Submitter: Jenkins
Branch: master

commit 3ea09dea15147634ea5a5abff752a329464d9789
Author: Akihito Takai <email address hidden>
Date: Wed Oct 19 11:23:39 2016 +0900

    Fix FD leak in storlet_gateway

    storlet_gateway leaks the FD of "input_data_read_fd" in PUT request.
    This patch prevent to leak the FD of "input_data_read_fd".

    Change-Id: Ic61049e18f450ec3b0b0e7bae9d55b889f80baf3
    Closes-Bug: #1634721