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docker.py: Improve subprocess exit code handling 

A few error handlings are missing because we ignore the subprocess exit
code, for example "docker build" errors are currently ignored.

Introduce _do_check() aside the existing _do() method and use it in a
few places.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <20170712075528.22770-3-famz@redhat.com>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Fam Zheng <famz@redhat.com>
This commit is contained in:
Fam Zheng 2017-07-12 15:55:28 +08:00
parent 58bf7b6d8c
commit 0b95ff72cb
1 changed files with 12 additions and 7 deletions
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19
tests/docker/docker.py
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@ -117,6 +117,11 @@ class Docker(object):
kwargs["stdout"] = DEVNULL
return subprocess.call(self._command + cmd, **kwargs)
def _do_check(self, cmd, quiet=True, **kwargs):
if quiet:
kwargs["stdout"] = DEVNULL
return subprocess.check_call(self._command + cmd, **kwargs)
def _do_kill_instances(self, only_known, only_active=True):
cmd = ["ps", "-q"]
if not only_active:
@ -175,14 +180,14 @@ class Docker(object):
extra_files_cksum)))
tmp_df.flush()
self._do(["build", "-t", tag, "-f", tmp_df.name] + argv + \
[docker_dir],
quiet=quiet)
self._do_check(["build", "-t", tag, "-f", tmp_df.name] + argv + \
[docker_dir],
quiet=quiet)
def update_image(self, tag, tarball, quiet=True):
"Update a tagged image using "
self._do(["build", "-t", tag, "-"], quiet=quiet, stdin=tarball)
self._do_check(["build", "-t", tag, "-"], quiet=quiet, stdin=tarball)
def image_matches_dockerfile(self, tag, dockerfile):
try:
@ -195,9 +200,9 @@ class Docker(object):
label = uuid.uuid1().hex
if not keep:
self._instances.append(label)
ret = self._do(["run", "--label",
"com.qemu.instance.uuid=" + label] + cmd,
quiet=quiet)
ret = self._do_check(["run", "--label",
"com.qemu.instance.uuid=" + label] + cmd,
quiet=quiet)
if not keep:
self._instances.remove(label)
return ret