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Updated filetransfer example

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This commit is contained in:
Mark Qvist 2020-06-14 19:06:31 +02:00
parent e2122be006
commit fda6ea741e
1 changed files with 54 additions and 7 deletions
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61
Examples/Filetransfer.py
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@ -176,14 +176,22 @@ def list_timeout(receipt):
##########################################################
# We store a global list of files available on the server
server_files = []
server_files = []
# A reference to the server link
server_link = None
server_link = None
# And a reference to the current download
current_download = None
current_filename = None
current_download = None
current_filename = None
# Variables to store download statistics
download_started = 0
download_finished = 0
download_time = 0
transfer_size = 0
file_size = 0
# This initialisation is executed when the users chooses
# to run as a client
@ -303,7 +311,7 @@ def menu():
# I won't go into detail here. Just
# strings basically.
def print_menu():
global menu_mode
global menu_mode, download_time, download_started, download_finished, transfer_size, file_size
if menu_mode == "main":
clear_screen()
@ -342,8 +350,22 @@ def print_menu():
if current_download.status == RNS.Resource.COMPLETE:
print(("\rProgress: 100.0 %"), end=' ')
sys.stdout.flush()
# Print statistics
hours, rem = divmod(download_time, 3600)
minutes, seconds = divmod(rem, 60)
timestring = "{:0>2}:{:0>2}:{:05.2f}".format(int(hours),int(minutes),seconds)
print("")
print("")
print("--- Statistics -----")
print("\tTime taken : "+timestring)
print("\tFile size : "+size_str(file_size))
print("\tData transferred : "+size_str(transfer_size))
print("\tEffective rate : "+size_str(file_size/download_time, suffix='b')+"/s")
print("\tTransfer rate : "+size_str(transfer_size/download_time, suffix='b')+"/s")
print("")
print("The download completed! Press enter to return to the menu.")
print("")
input()
else:
@ -434,17 +456,26 @@ def link_closed(link):
# so the user can be shown a progress of
# the download.
def download_began(resource):
global menu_mode, current_download
global menu_mode, current_download, download_started, transfer_size, file_size
current_download = resource
download_started = time.time()
transfer_size = resource.size
file_size = resource.uncompressed_size
menu_mode = "downloading"
# When the download concludes, successfully
# or not, we'll update our menu state and
# inform the user about how it all went.
def download_concluded(resource):
global menu_mode, current_filename
global menu_mode, current_filename, download_started, download_finished, download_time
download_finished = time.time()
download_time = download_finished - download_started
saved_filename = current_filename
if resource.status == RNS.Resource.COMPLETE:
counter = 0
while os.path.isfile(saved_filename):
@ -461,6 +492,22 @@ def download_concluded(resource):
else:
menu_mode = "download_concluded"
# A convenience function for printing a human-
# readable file size
def size_str(num, suffix='B'):
units = ['','Ki','Mi','Gi','Ti','Pi','Ei','Zi']
last_unit = 'Yi'
if suffix == 'b':
num *= 8
units = ['','K','M','G','T','P','E','Z']
last_unit = 'Y'
for unit in units:
if abs(num) < 1024.0:
return "%3.2f %s%s" % (num, unit, suffix)
num /= 1024.0
return "%.2f %s%s" % (num, last_unit, suffix)
# A convenience function for clearing the screen
def clear_screen():