source_blob_service = PageBlobService(args.sourceaccount, args.sourcekey)
backup_blob_service = PageBlobService(args.backupaccount, args.backupkey)
# Find page differences between snapshots and update backup blob with changes
try:
ranges = source_blob_service.get_page_ranges_diff(args.sourcecontainer, args.sourceblob, args.snapshotprevious, args.snapshotcurrent)
for range in ranges:
if range.is_cleared == True:
print('clearing page range: ({}, {}) '.format(range.start, range.end))
backup_blob_service.clear_page(args.backupcontainer, args.backupblob, range.start, range.end)
else:
byte_offset = 0
last_range = False
while True:
start_range = range.start + byte_offset
end_range = start_range + max_range - 1
if end_range >= range.end:
end_range = range.end
last_range = True
print('updating page range: ({}, {}, {} bytes) '.format(start_range, end_range, end_range - start_range + 1))
page = source_blob_service.get_blob_to_bytes(args.sourcecontainer, args.sourceblob, args.snapshotcurrent, start_range, end_range)
backup_blob_service.update_page(args.backupcontainer, args.backupblob, page.content, start_range, end_range)
if last_range:
break
byte_offset = byte_offset + max_range
except:
sys.exit(1)
else:
sys.exit(0)
# d = scaled.tobytes()
entity = table_service.get_entity(table_name='devices',
partition_key='engine',
row_key='1')
signal, last_speed = generate(t,
wk,
Ak,
last_speed=last_speed,
target_speed=entity.speed)
signal.resize(16 * 512)
signal[fs] = last_speed
d = signal.tobytes()
page_start = i * 32 * 512
page_end = page_start + 32 * 512 - 1
r = az_blob_service.set_sequence_number(CONTAINER_NAME,
"buffer",
sequence_number_action="increment")
az_blob_service.update_page(CONTAINER_NAME, "buffer", d, page_start,
page_end)
i = (i + 1) % 10
t += 1
print(time())
sleep(max(0, start + t - time()))
for range in ranges:
if range.is_cleared == True:
print('clearing page range: ({}, {}) '.format(
range.start, range.end))
backup_blob_service.clear_page(args.backupcontainer,
args.backupblob, range.start,
range.end)
else:
byte_offset = 0
last_range = False
while True:
start_range = range.start + byte_offset
end_range = start_range + max_range - 1
if end_range >= range.end:
end_range = range.end
last_range = True
print('updating page range: ({}, {}, {} bytes) '.format(
start_range, end_range, end_range - start_range + 1))
page = source_blob_service.get_blob_to_bytes(
args.sourcecontainer, args.sourceblob,
args.snapshotcurrent, start_range, end_range)
backup_blob_service.update_page(args.backupcontainer,
args.backupblob, page.content,
start_range, end_range)
if last_range:
break
byte_offset = byte_offset + max_range
except:
sys.exit(1)
else:
sys.exit(0)