def _handle_synthesis_url(self, message):
LOG.info("\n\n----------------------- New Connection --------------")
# check overlay meta info
start_time = time.time()
header_start_time = time.time()
base_path, meta_info = self._check_url_validity(message)
if meta_info is None:
self.ret_fail("cannot access overlay URL")
return
if base_path is None:
self.ret_fail("No matching Base VM")
return
if meta_info.get(Cloudlet_Const.META_OVERLAY_FILES, None) is None:
self.ret_fail("No overlay files are listed")
return
# return success get overlay URL
self.ret_success(Protocol.MESSAGE_COMMAND_SEND_META)
overlay_url = message.get(Protocol.KEY_OVERLAY_URL)
overlay_package = VMOverlayPackage(overlay_url)
# update DB
session_id = message.get(Protocol.KEY_SESSION_ID, None)
new_overlayvm = OverlayVM(session_id, base_path)
self.server.dbconn.add_item(new_overlayvm)
# start synthesis process
url_manager = Manager()
overlay_urls = url_manager.list()
overlay_urls_size = url_manager.dict()
for blob in meta_info[Cloudlet_Const.META_OVERLAY_FILES]:
url = blob[Cloudlet_Const.META_OVERLAY_FILE_NAME]
size = blob[Cloudlet_Const.META_OVERLAY_FILE_SIZE]
overlay_urls.append(url)
overlay_urls_size[url] = size
LOG.info(" - %s" % str(pformat(self.synthesis_option)))
LOG.info(" - Base VM : %s" % base_path)
LOG.info(" - Blob count : %d" % len(overlay_urls))
if overlay_urls == None:
self.ret_fail("No overlay info listed")
return
(base_diskmeta, base_mem, base_memmeta) = \
Cloudlet_Const.get_basepath(base_path, check_exist=True)
header_end_time = time.time()
LOG.info("Meta header processing time: %f" % (header_end_time-header_start_time))
# read overlay files
# create named pipe to convert queue to stream
time_transfer = Queue(); time_decomp = Queue();
time_delta = Queue(); time_fuse = Queue();
self.tmp_overlay_dir = tempfile.mkdtemp()
self.overlay_pipe = os.path.join(self.tmp_overlay_dir, 'overlay_pipe')
os.mkfifo(self.overlay_pipe)
# save overlay decomp result for measurement
temp_overlay_file = None
if self.synthesis_option.get(Protocol.SYNTHESIS_OPTION_SHOW_STATISTICS):
temp_overlay_filepath = os.path.join(self.tmp_overlay_dir, "overlay_file")
temp_overlay_file = open(temp_overlay_filepath, "w+b")
# overlay
demanding_queue = Queue()
download_queue = JoinableQueue()
download_process = URLFetchStep(overlay_package, overlay_urls,
overlay_urls_size, demanding_queue, download_queue,
time_transfer, Synthesis_Const.TRANSFER_SIZE, )
decomp_process = DecompStepProc(
download_queue, self.overlay_pipe, time_decomp, temp_overlay_file,
)
modified_img, modified_mem, self.fuse, self.delta_proc, self.fuse_proc = \
synthesis.recover_launchVM(base_path, meta_info, self.overlay_pipe,
log=sys.stdout, demanding_queue=demanding_queue)
self.delta_proc.time_queue = time_delta # for measurement
self.fuse_proc.time_queue = time_fuse # for measurement
if self.synthesis_option.get(Protocol.SYNTHESIS_OPTION_EARLY_START, False):
# 1. resume VM
self.resumed_VM = synthesis.SynthesizedVM(modified_img, modified_mem, self.fuse)
time_start_resume = time.time()
self.resumed_VM.start()
time_end_resume = time.time()
# 2. start processes
download_process.start()
decomp_process.start()
self.delta_proc.start()
self.fuse_proc.start()
# 3. return success right after resuming VM
# before receiving all chunks
self.resumed_VM.join()
self.send_synthesis_done()
# 4. then wait fuse end
self.fuse_proc.join()
else:
# 1. start processes
download_process.start()
decomp_process.start()
self.delta_proc.start()
self.fuse_proc.start()
# 2. resume VM
self.resumed_VM = synthesis.SynthesizedVM(modified_img, modified_mem, self.fuse)
self.resumed_VM.start()
# 3. wait for fuse end
self.fuse_proc.join()
# 4. return success to client
time_start_resume = time.time() # measure pure resume time
self.resumed_VM.join()
time_end_resume = time.time()
self.send_synthesis_done()
end_time = time.time()
# printout result
SynthesisHandler.print_statistics(start_time, end_time, \
time_transfer, time_decomp, time_delta, time_fuse, \
resume_time=(time_end_resume-time_start_resume))
if self.synthesis_option.get(Protocol.SYNTHESIS_OPTION_DISPLAY_VNC, False):
synthesis.connect_vnc(self.resumed_VM.machine, no_wait=True)
# save all the resource to the session resource
global session_resources
s_resource = SessionResource(session_id)
s_resource.add(SessionResource.DELTA_PROCESS, self.delta_proc)
s_resource.add(SessionResource.RESUMED_VM, self.resumed_VM)
s_resource.add(SessionResource.FUSE, self.fuse)
s_resource.add(SessionResource.OVERLAY_PIPE, self.overlay_pipe)
s_resource.add(SessionResource.OVERLAY_DIR, self.tmp_overlay_dir)
s_resource.add(SessionResource.OVERLAY_DB_ENTRY, new_overlayvm)
session_resources[session_id] = s_resource
LOG.info("Resource is allocated for Session: %s" % str(session_id))
# printout synthesis statistics
if self.synthesis_option.get(Protocol.SYNTHESIS_OPTION_SHOW_STATISTICS):
mem_access_list = self.resumed_VM.monitor.mem_access_chunk_list
disk_access_list = self.resumed_VM.monitor.disk_access_chunk_list
synthesis.synthesis_statistics(meta_info, temp_overlay_filepath, \
mem_access_list, disk_access_list)
LOG.info("[SOCKET] waiting for client exit message")
def _handle_synthesis_url(self, message):
LOG.info("\n\n----------------------- New Connection --------------")
# check overlay meta info
start_time = time.time()
header_start_time = time.time()
base_path, meta_info = self._check_url_validity(message)
if meta_info is None:
self.ret_fail("cannot access overlay URL")
return
if base_path is None:
self.ret_fail("No matching Base VM")
return
if meta_info.get(Cloudlet_Const.META_OVERLAY_FILES, None) is None:
self.ret_fail("No overlay files are listed")
return
# return success get overlay URL
self.ret_success(Protocol.MESSAGE_COMMAND_SEND_META)
overlay_url = message.get(Protocol.KEY_OVERLAY_URL)
overlay_package = VMOverlayPackage(overlay_url)
# update DB
session_id = message.get(Protocol.KEY_SESSION_ID, None)
new_overlayvm = OverlayVM(session_id, base_path)
self.server.dbconn.add_item(new_overlayvm)
# start synthesis process
url_manager = Manager()
overlay_urls = url_manager.list()
overlay_urls_size = url_manager.dict()
for blob in meta_info[Cloudlet_Const.META_OVERLAY_FILES]:
url = blob[Cloudlet_Const.META_OVERLAY_FILE_NAME]
size = blob[Cloudlet_Const.META_OVERLAY_FILE_SIZE]
overlay_urls.append(url)
overlay_urls_size[url] = size
LOG.info(" - %s" % str(pformat(self.synthesis_option)))
LOG.info(" - Base VM : %s" % base_path)
LOG.info(" - Blob count : %d" % len(overlay_urls))
if overlay_urls == None:
self.ret_fail("No overlay info listed")
return
(base_diskmeta, base_mem, base_memmeta) = \
Cloudlet_Const.get_basepath(base_path, check_exist=True)
header_end_time = time.time()
LOG.info("Meta header processing time: %f" %
(header_end_time - header_start_time))
# read overlay files
# create named pipe to convert queue to stream
time_transfer = Queue()
time_decomp = Queue()
time_delta = Queue()
time_fuse = Queue()
self.tmp_overlay_dir = tempfile.mkdtemp()
self.overlay_pipe = os.path.join(self.tmp_overlay_dir, 'overlay_pipe')
os.mkfifo(self.overlay_pipe)
# save overlay decomp result for measurement
temp_overlay_file = None
if self.synthesis_option.get(
Protocol.SYNTHESIS_OPTION_SHOW_STATISTICS):
temp_overlay_filepath = os.path.join(self.tmp_overlay_dir,
"overlay_file")
temp_overlay_file = open(temp_overlay_filepath, "w+b")
# overlay
demanding_queue = Queue()
download_queue = JoinableQueue()
download_process = URLFetchStep(
overlay_package,
overlay_urls,
overlay_urls_size,
demanding_queue,
download_queue,
time_transfer,
Synthesis_Const.TRANSFER_SIZE,
)
decomp_process = DecompStepProc(
download_queue,
self.overlay_pipe,
time_decomp,
temp_overlay_file,
)
modified_img, modified_mem, self.fuse, self.delta_proc, self.fuse_proc = \
synthesis.recover_launchVM(base_path, meta_info, self.overlay_pipe,
log=sys.stdout, demanding_queue=demanding_queue)
self.delta_proc.time_queue = time_delta # for measurement
self.fuse_proc.time_queue = time_fuse # for measurement
if self.synthesis_option.get(Protocol.SYNTHESIS_OPTION_EARLY_START,
False):
# 1. resume VM
self.resumed_VM = synthesis.SynthesizedVM(modified_img,
modified_mem, self.fuse)
time_start_resume = time.time()
self.resumed_VM.start()
time_end_resume = time.time()
# 2. start processes
download_process.start()
decomp_process.start()
self.delta_proc.start()
self.fuse_proc.start()
# 3. return success right after resuming VM
# before receiving all chunks
self.resumed_VM.join()
self.send_synthesis_done()
# 4. then wait fuse end
self.fuse_proc.join()
else:
# 1. start processes
download_process.start()
decomp_process.start()
self.delta_proc.start()
self.fuse_proc.start()
# 2. resume VM
self.resumed_VM = synthesis.SynthesizedVM(modified_img,
modified_mem, self.fuse)
self.resumed_VM.start()
# 3. wait for fuse end
self.fuse_proc.join()
# 4. return success to client
time_start_resume = time.time() # measure pure resume time
self.resumed_VM.join()
time_end_resume = time.time()
self.send_synthesis_done()
end_time = time.time()
# printout result
SynthesisHandler.print_statistics(start_time, end_time, \
time_transfer, time_decomp, time_delta, time_fuse, \
resume_time=(time_end_resume-time_start_resume))
if self.synthesis_option.get(Protocol.SYNTHESIS_OPTION_DISPLAY_VNC,
False):
synthesis.connect_vnc(self.resumed_VM.machine, no_wait=True)
# save all the resource to the session resource
global session_resources
s_resource = SessionResource(session_id)
s_resource.add(SessionResource.DELTA_PROCESS, self.delta_proc)
s_resource.add(SessionResource.RESUMED_VM, self.resumed_VM)
s_resource.add(SessionResource.FUSE, self.fuse)
s_resource.add(SessionResource.OVERLAY_PIPE, self.overlay_pipe)
s_resource.add(SessionResource.OVERLAY_DIR, self.tmp_overlay_dir)
s_resource.add(SessionResource.OVERLAY_DB_ENTRY, new_overlayvm)
session_resources[session_id] = s_resource
LOG.info("Resource is allocated for Session: %s" % str(session_id))
# printout synthesis statistics
if self.synthesis_option.get(
Protocol.SYNTHESIS_OPTION_SHOW_STATISTICS):
mem_access_list = self.resumed_VM.monitor.mem_access_chunk_list
disk_access_list = self.resumed_VM.monitor.disk_access_chunk_list
synthesis.synthesis_statistics(meta_info, temp_overlay_filepath, \
mem_access_list, disk_access_list)
LOG.info("[SOCKET] waiting for client exit message")