tests/test-exitwhen-file-created.sh

   1 #!/usr/bin/env bash
   2 # nbdkit
   3 # Copyright Red Hat
   4 #
   5 # Redistribution and use in source and binary forms, with or without
   6 # modification, are permitted provided that the following conditions are
   7 # met:
   8 #
   9 # * Redistributions of source code must retain the above copyright
  10 # notice, this list of conditions and the following disclaimer.
  11 #
  12 # * Redistributions in binary form must reproduce the above copyright
  13 # notice, this list of conditions and the following disclaimer in the
  14 # documentation and/or other materials provided with the distribution.
  15 #
  16 # * Neither the name of Red Hat nor the names of its contributors may be
  17 # used to endorse or promote products derived from this software without
  18 # specific prior written permission.
  19 #
  20 # THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
  21 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  22 # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  23 # PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
  24 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  27 # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  28 # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  29 # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  30 # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31 # SUCH DAMAGE.
  32
  33 source ./functions.sh
  34 set -x
  35
  36 requires_filter exitwhen
  37 requires nbdsh --version
  38
  39 sock=$(mktemp -u /tmp/nbdkit-test-sock.XXXXXX)
  40 pidfile=exitwhen-file-created.pid
  41 eventfile=exitwhen-file-created.event
  42 files="$pidfile $sock $eventfile"
  43 cleanup_fn rm -f $files
  44
  45 # Start nbdkit with the exitwhen filter.
  46 start_nbdkit -P $pidfile -U $sock \
  47              --filter=exitwhen memory size=1M \
  48              exit-when-file-created=$eventfile
  49
  50 # Connect and test.
  51 export eventfile sock
  52 nbdsh -c - <<'EOF'
  53 import os
  54 from pathlib import Path
  55
  56 eventfile = os.environ['eventfile']
  57 sock = os.environ['sock']
  58
  59 # Open a couple of connections.
  60 h.connect_unix(sock)
  61 h2 = nbd.NBD()
  62 h2.connect_unix(sock)
  63
  64 # The connections should both be functional.
  65 buf = h.pread(512, 0)
  66 buf = h2.pread(512, 0)
  67
  68 # Create the event.
  69 Path(eventfile).touch()
  70
  71 # The connections should still be functional.
  72 buf = h.pread(512, 0)
  73 h.shutdown()
  74 del h
  75 buf = h2.pread(512, 0)
  76 h2.shutdown()
  77 del h2
  78 EOF
  79
  80 # Now nbdkit should exit automatically.  Wait for it to do so.
  81 pid=`cat $pidfile`
  82 for i in {1..60}; do
  83     if ! kill -s 0 $pid; then
  84         break
  85     fi
  86     sleep 1
  87 done
  88 if kill -s 0 $pid; then
  89     echo "$0: nbdkit did not exit after last client connection"
  90     exit 1
  91 fi