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validate:launcher: Just wait for a while before considering Xvfb is ready if xset is not present

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This is what xvfb-run so let's consider it good enough
This commit is contained in:
Thibault Saunier 2018-09-07 15:59:49 -03:00
parent f0cfdf9d14
commit 1623f7111c
1 changed files with 10 additions and 4 deletions
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14
validate/launcher/vfb_server.py
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@ -46,12 +46,11 @@ class Xvfb(VirtualFrameBufferServer):
self._logsfile = None
self._command = "Xvfb %s -screen 0 1920x1080x24" % self.display_id
def _check_is_up(self, timeout=60):
""" Check if the xvfb is up, running a simple test based on wget. """
def _check_is_up(self, timeout=3, assume_true=True):
""" Check if the xvfb is up, running a simple test based on xset. """
start = time.time()
while True:
try:
cdisplay = os.environ.get("DISPLAY", None)
os.environ["DISPLAY"] = self.display_id
subprocess.check_output(["xset", "q"],
stderr=self._logsfile)
@ -59,6 +58,13 @@ class Xvfb(VirtualFrameBufferServer):
return True
except subprocess.CalledProcessError:
pass
except FileNotFoundError:
if assume_true:
print('WARNING: xset not preset on the system,'
' just wait for %s seconds and hope for the best.'
' (this is what xvfb-run itself does anyway.)' % timeout)
time.sleep(timeout)
return assume_true
if time.time() - start > timeout:
return False
@ -69,7 +75,7 @@ class Xvfb(VirtualFrameBufferServer):
""" Start xvfb in a subprocess """
self._logsfile = open(os.path.join(self.options.logsdir,
"xvfb.logs"), 'w+')
if self._check_is_up(timeout=2):
if self._check_is_up(assume_true=False):
print("xvfb already running")
return (True, None)