def prepare_capture(self):
self._logger.info("Preparing capture.")
self._update_status(step='capture')
self._pool_executor = ThreadPoolExecutor(
max_workers=multiprocessing.cpu_count())
if any(dev.target_page is None for dev in self.devices):
raise util.DeviceException(
"Target page for at least one of the devicescould not be"
"determined, please run 'spread configure' to configure your"
"your devices.")
with ThreadPoolExecutor(len(self.devices)) as executor:
futures = []
self._logger.debug("Preparing capture in devices")
for dev in self.devices:
futures.append(executor.submit(dev.prepare_capture, self.path))
util.check_futures_exceptions(futures)
flip_target = ('flip_target_pages' in self.config['device'].keys()
and self.config['device']['flip_target_pages'].get())
if flip_target:
(self.devices[0].target_page,
self.devices[1].target_page) = (self.devices[1].target_page,
self.devices[0].target_page)
self._run_hook('prepare_capture', self.devices, self.path)
self._run_hook('start_trigger_loop', self.capture)
self._update_status(prepared=True)
def prepare_capture(self):
""" Prepare capture on devices and initialize trigger plugins. """
self._logger.info("Preparing capture.")
self._update_status(step='capture')
if any(dev.target_page is None for dev in self.devices):
raise util.DeviceException(
"Target page for at least one of the devices could not be"
"determined, please run 'spread configure' to configure your"
"devices.")
with concfut.ThreadPoolExecutor(len(self.devices)) as executor:
futures = []
self._logger.debug("Preparing capture in devices")
for dev in self.devices:
futures.append(executor.submit(dev.prepare_capture))
util.check_futures_exceptions(futures)
flip_target = ('flip_target_pages' in self.config['device'].keys() and
self.config['device']['flip_target_pages'].get())
if flip_target:
(self.devices[0].target_page,
self.devices[1].target_page) = (self.devices[1].target_page,
self.devices[0].target_page)
self._run_hook('prepare_capture', self.devices)
self._run_hook('start_trigger_loop', self.capture)
self._update_status(prepared=True)
def capture(self, retake=False):
with self._capture_lock:
self._logger.info("Triggering capture.")
self.on_capture_triggered.send(self)
parallel_capture = (
'parallel_capture' in self.config['device'].keys()
and self.config['device']['parallel_capture'].get()
)
num_devices = len(self.devices)
# Abort when there is little free space
if get_free_space(self.path) < 50*(1024**2):
raise IOError("Insufficient disk space to take a capture.")
if retake:
# Remove last n images, where n == len(self.devices)
map(lambda x: x.unlink(), self.images[-num_devices:])
futures = []
with ThreadPoolExecutor(num_devices
if parallel_capture else 1) as executor:
self._logger.debug("Sending capture command to devices")
for dev in self.devices:
img_path = self._get_next_filename(dev.target_page)
futures.append(executor.submit(dev.capture, img_path))
check_futures_exceptions(futures)
self._run_hook('capture', self.devices, self.path)
if not retake:
self.pages_shot += len(self.devices)
self.on_capture_succeeded.send(self,
images=self.images[-num_devices:])
def capture(self, retake=False):
with self._capture_lock:
self._logger.info("Triggering capture.")
self.on_capture_triggered.send(self)
parallel_capture = (
'parallel_capture' in self.config['device'].keys()
and self.config['device']['parallel_capture'].get())
num_devices = len(self.devices)
# Abort when there is little free space
if get_free_space(self.path) < 50 * (1024**2):
raise IOError("Insufficient disk space to take a capture.")
if retake:
# Remove last n images, where n == len(self.devices)
map(lambda x: x.unlink(), self.images[-num_devices:])
futures = []
with ThreadPoolExecutor(
num_devices if parallel_capture else 1) as executor:
self._logger.debug("Sending capture command to devices")
for dev in self.devices:
img_path = self._get_next_filename(dev.target_page)
futures.append(executor.submit(dev.capture, img_path))
check_futures_exceptions(futures)
self._run_hook('capture', self.devices, self.path)
if not retake:
self.pages_shot += len(self.devices)
self.on_capture_succeeded.send(self,
images=self.images[-num_devices:])
def prepare_capture(self):
self._logger.info("Preparing capture.")
self.step = 'capture'
if any(dev.target_page is None for dev in self.devices):
raise DeviceException(
"Target page for at least one of the devicescould not be"
"determined, please run 'spread configure' to configure your"
"your devices.")
with ThreadPoolExecutor(len(self.devices)) as executor:
futures = []
self._logger.debug("Preparing capture in devices")
for dev in self.devices:
futures.append(executor.submit(dev.prepare_capture, self.path))
check_futures_exceptions(futures)
flip_target = ('flip_target_pages' in self.config['device'].keys()
and self.config['device']['flip_target_pages'].get())
if flip_target:
(self.devices[0].target_page,
self.devices[1].target_page) = (self.devices[1].target_page,
self.devices[0].target_page)
self._run_hook('prepare_capture', self.devices, self.path)
self._run_hook('start_trigger_loop', self.capture)
self.prepared = True
self.active = True
def prepare_capture(self):
""" Prepare capture on devices and initialize trigger plugins. """
self._logger.info("Preparing capture.")
self._update_status(step='capture')
is_multicam = len(self.devices) > 1
are_targets_set = all(dev.target_page is not None
for dev in self.devices)
if is_multicam and not are_targets_set:
raise util.DeviceException(
"Target page for at least one of the devices could not be"
"determined, please run 'spread configure' to configure your"
"devices.")
with concfut.ThreadPoolExecutor(len(self.devices)) as executor:
futures = []
self._logger.debug("Preparing capture in devices")
for dev in self.devices:
futures.append(executor.submit(dev.prepare_capture))
util.check_futures_exceptions(futures)
flip_target = ('flip_target_pages' in self.config['device'].keys() and
self.config['device']['flip_target_pages'].get())
if flip_target:
(self.devices[0].target_page,
self.devices[1].target_page) = (self.devices[1].target_page,
self.devices[0].target_page)
self._run_hook('prepare_capture', self.devices)
self._run_hook('start_trigger_loop', self.capture)
self._update_status(prepared=True)
def finish_capture(self):
self.step_done = True
with ThreadPoolExecutor(len(self.devices)) as executor:
futures = []
self._logger.debug("Sending finish_capture command to devices")
for dev in self.devices:
futures.append(executor.submit(dev.finish_capture))
check_futures_exceptions(futures)
self._run_hook('finish_capture', self.devices, self.path)
self._run_hook('stop_trigger_loop')
self.prepared = False
self.active = False
def finish_capture(self):
self.step_done = True
with ThreadPoolExecutor(len(self.devices)) as executor:
futures = []
self._logger.debug("Sending finish_capture command to devices")
for dev in self.devices:
futures.append(executor.submit(dev.finish_capture))
check_futures_exceptions(futures)
self._run_hook('finish_capture', self.devices, self.path)
self._run_hook('stop_trigger_loop')
self.prepared = False
self.active = False
def finish_capture(self):
if self._pool_executor:
self._pool_executor.shutdown(wait=False)
self._pool_executor = None
with ThreadPoolExecutor(len(self.devices)) as executor:
futures = []
self._logger.debug("Sending finish_capture command to devices")
for dev in self.devices:
futures.append(executor.submit(dev.finish_capture))
util.check_futures_exceptions(futures)
self._run_hook('finish_capture', self.devices, self.path)
self._run_hook('stop_trigger_loop')
self._update_status(step=None, prepared=False)
def finish_capture(self):
if self._pool_executor:
self._pool_executor.shutdown(wait=False)
self._pool_executor = None
with ThreadPoolExecutor(len(self.devices)) as executor:
futures = []
self._logger.debug("Sending finish_capture command to devices")
for dev in self.devices:
futures.append(executor.submit(dev.finish_capture))
util.check_futures_exceptions(futures)
self._run_hook('finish_capture', self.devices, self.path)
self._run_hook('stop_trigger_loop')
self._update_status(step=None, prepared=False)
def capture(self, retake=False):
""" Perform a single capture.
:param retake: Replace the previous capture
"""
if not self.status['prepared']:
raise util.SpreadsException("Capture was not prepared before.")
# To prevent multiple captures from interfering with each other,
# we hold a lock during the whole process.
with self._capture_lock:
self._logger.info("Triggering capture.")
on_capture_triggered.send(self)
parallel_capture = (
'parallel_capture' in self.config['device'].keys() and
self.config['device']['parallel_capture'].get()
)
num_devices = len(self.devices)
# Abort when there is little free space
if util.get_free_space(self.path) < 50*(1024**2):
raise IOError("Insufficient disk space to take a capture.")
futures = []
captured_pages = []
with concfut.ThreadPoolExecutor(
num_devices if parallel_capture else 1) as executor:
self._logger.debug("Sending capture command to devices")
for dev in self.devices:
page = self._get_next_capture_page(dev.target_page)
captured_pages.append(page)
futures.append(executor.submit(dev.capture,
page.raw_image))
util.check_futures_exceptions(futures)
if retake:
# Remove previous n pages, where n == len(self.devices)
self.remove_pages(*self.pages[-num_devices:])
for page in sorted(captured_pages, key=lambda p: p.capture_num):
page.sequence_num = len(self.pages)
self.pages.append(page)
self._run_hook('capture', self.devices, self.path)
# Queue new images for hashing
future = self._threadpool.submit(self.bag.add_payload,
*(unicode(p.raw_image)
for p in captured_pages))
self._pending_tasks.append(future)
self._save_pages()
on_capture_succeeded.send(self, pages=captured_pages, retake=retake)
def capture(self, retake=False):
""" Perform a single capture.
:param retake: Replace the previous capture
"""
if not self.status['prepared']:
raise util.SpreadsException("Capture was not prepared before.")
# To prevent multiple captures from interfering with each other,
# we hold a lock during the whole process.
with self._capture_lock:
self._logger.info("Triggering capture.")
on_capture_triggered.send(self)
parallel_capture = (
'parallel_capture' in self.config['device'].keys() and
self.config['device']['parallel_capture'].get()
)
num_devices = len(self.devices)
# Abort when there is little free space
if util.get_free_space(self.path) < 50*(1024**2):
raise IOError("Insufficient disk space to take a capture.")
futures = []
captured_pages = []
with concfut.ThreadPoolExecutor(
num_devices if parallel_capture else 1) as executor:
self._logger.debug("Sending capture command to devices")
for dev in self.devices:
page = self._get_next_capture_page(dev.target_page)
captured_pages.append(page)
futures.append(executor.submit(dev.capture,
page.raw_image))
util.check_futures_exceptions(futures)
if retake:
# Remove previous n pages, where n == len(self.devices)
self.remove_pages(*self.pages[-num_devices:])
for page in sorted(captured_pages, key=lambda p: p.capture_num):
page.sequence_num = len(self.pages)
self.pages.append(page)
self._run_hook('capture', self.devices, self.path)
# Queue new images for hashing
future = self._threadpool.submit(self.bag.add_payload,
*(unicode(p.raw_image)
for p in captured_pages))
self._pending_tasks.append(future)
self._save_pages()
on_capture_succeeded.send(self, pages=captured_pages, retake=retake)
def finish_capture(self):
# Waits for last capture to finish
with self._capture_lock:
concfut.wait(self._pending_tasks)
with concfut.ThreadPoolExecutor(len(self.devices)) as executor:
futures = []
self._logger.debug("Sending finish_capture command to devices")
for dev in self.devices:
futures.append(executor.submit(dev.finish_capture))
util.check_futures_exceptions(futures)
# NOTE: For performance reason, we only save the pages here, since
# the ongoing hashing slows things down considerably during capture
self._save_pages()
self._run_hook('finish_capture', self.devices, self.path)
self._run_hook('stop_trigger_loop')
self._update_status(step=None, prepared=False)
def finish_capture(self):
""" Wrap up capture process. """
# Waits for last capture to finish
with self._capture_lock:
concfut.wait(self._pending_tasks)
with concfut.ThreadPoolExecutor(len(self.devices)) as executor:
futures = []
self._logger.debug("Sending finish_capture command to devices")
for dev in self.devices:
futures.append(executor.submit(dev.finish_capture))
util.check_futures_exceptions(futures)
# NOTE: For performance reason, we only save the pages here, since
# the ongoing hashing slows things down considerably during capture
self._save_pages()
self._run_hook('finish_capture', self.devices, self.path)
self._run_hook('stop_trigger_loop')
self._update_status(step=None, prepared=False)
def capture(self, retake=False):
if self.capture_start is None:
self.capture_start = time.time()
self.logger.info("Triggering capture.")
parallel_capture = ('parallel_capture' in self.config['device'].keys()
and self.config['device']['parallel_capture'].get()
)
num_devices = 1 if not parallel_capture else 2
if retake:
# Remove last n images, where n == len(self.devices)
map(lambda x: x.unlink(), self.images[-num_devices:])
with ThreadPoolExecutor(num_devices) as executor:
futures = []
self.logger.debug("Sending capture command to devices")
for dev in self.devices:
img_path = self._get_next_filename(dev.target_page)
futures.append(executor.submit(dev.capture, img_path))
check_futures_exceptions(futures)
self._run_hook('capture', self.devices, self.path)
self._pages_shot += len(self.devices)