msv-webcam-backend/msv_webcam_backend.py

102 lines
4.3 KiB
Python

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
""" Author: Hendrik Schutter, mail@hendrikschutter.com
"""
import glob
import os
import time
import shutil
import sys
signal_pipe_path = "/tmp/msv-webcam-signal-pipe"
signal_pipe_msg = "msv-webcam-new-images"
def copy_image(src, destination_dir_path, destination_owner):
# print("src: " + str(src))
# print("dst: " + str(destination_dir_path))
os.makedirs(os.path.dirname(destination_dir_path), exist_ok=True)
shutil.copyfile(src, destination_dir_path)
os.chmod(destination_dir_path, 0o0644)
shutil.chown(destination_dir_path, destination_owner)
def signal_new_images():
if not os.path.exists(signal_pipe_path):
os.mkfifo(signal_pipe_path)
with open(signal_pipe_path, "w") as f:
f.write(signal_pipe_msg)
f.close()
def main():
print("starting ...")
update_interval = -1
destination_dir_path = -1
destination_owner = -1
search_dirs = list()
for argument in sys.argv:
if argument.startswith('interval'):
update_interval = int(argument.split("=")[1])
if argument.startswith('destination_dir'):
destination_dir_path = argument.split("=")[1]
if argument.startswith('destination_owner'):
destination_owner = argument.split("=")[1]
if argument.startswith('search_dir'):
tmp_search_dir = {
"search_dir_path" : argument.split("=")[1],
"newest_file_path" : "",
"newest_file_size" : 0
}
search_dirs.append(tmp_search_dir)
if ((update_interval == -1) or (destination_dir_path == -1) or (destination_owner == -1) or (len(search_dirs) == 0)):
print("Unable to parse config!")
print("Example usage:")
print(" python msv_webcam_backend.py interval=5 search_dir=test_images/msvcamS search_dir=test_images/msvcamN destination_dir=/tmp/msv_webcam_current destination_owner=hendrik")
sys.exit(-1)
while True:
new_images_found = False
for search_dir in search_dirs:
try:
# print("\nSearch dir: " + str(search_dir["search_dir_path"]))
list_of_files = glob.glob(search_dir["search_dir_path"]+"/**/*.jpg", recursive=True)
# print(list_of_files)
newest_file_path_tmp = max(list_of_files, key=os.path.getctime)
newest_file_size_tmp = os.stat(newest_file_path_tmp).st_size
list_of_files.clear()
if (newest_file_path_tmp == search_dir["newest_file_path"]) and (newest_file_size_tmp == search_dir["newest_file_size"]):
# already found the newest file
print("no newer file found")
else:
time.sleep(1) # wait 1sec to see if the upload is still in progress
list_of_files = glob.glob(search_dir["search_dir_path"]+"/**/*.jpg", recursive=True)
newest_file_path_tmp_delayed = max(list_of_files, key=os.path.getctime)
newest_file_size_tmp_delayed = os.stat(newest_file_path_tmp_delayed).st_size
list_of_files.clear()
if (newest_file_path_tmp == newest_file_path_tmp_delayed) and (newest_file_size_tmp == newest_file_size_tmp_delayed):
search_dir["newest_file_path"] = newest_file_path_tmp_delayed
search_dir["newest_file_size"] = newest_file_size_tmp_delayed
print("Found new file:")
print("Name: " + str(search_dir["newest_file_path"]))
print("Size: " + str(search_dir["newest_file_size"]))
dst_file_tmp = os.path.join(destination_dir_path, (os.path.basename(os.path.normpath(search_dir["search_dir_path"])) + os.path.splitext(search_dir["newest_file_path"])[1]))
copy_image(search_dir["newest_file_path"], dst_file_tmp, destination_owner)
new_images_found = True
#break
else:
print("Upload not finished yet!")
except Exception as e:
print(e)
#break
if(new_images_found == True):
signal_new_images()
time.sleep(update_interval)
if __name__ == "__main__":
main()