vproc.py
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#!/usr/bin/python
# encoding:utf-8
#######################################################
# author: liuh 2018-10-24
# version: v1.0
# copy to device /usr/local/bin/vproc
#######################################################
import sys
import getopt
import os
import shutil
#######################config#####################
ROOT_PATH="/root/UserApp/vproc"
##################################################
def usage():
print("""
useage: vproc command [options]
there are vproc commands:
read read a key's value
write write a key's value
clean remove group of items
write command options:
[+]-k any, --key=any | status item key.
[+]-v any, --value=any | status item value.
example:
vproc write --key=vaserver.va0.cameraname --value=camera1
vproc write --key=vaserver.va0.playok --value=1
read command options:
[+]-k any, --key=any | status item key.
example:
vproc read --key=vaserver.va0.cameraname
if executed write command example, it would be print camera1
clean command options:
[+]-p any, --path=any | the items's group key path
example:
vproc clean --path=vaserver.va0
if executed write command example, the dir:VPROC_ROOT/vaserver/va0 would be remove.
""")
def write_single_status(key, value):
paths = key.split('.')
paths_len = len(paths)
if(paths_len<2):
print("invalid key path, must be greater than 2 level")
sys.exit(-1)
if(paths_len>50):
print("invalid key path, level too deep")
sys.exit(-1)
fullpath = ROOT_PATH
for path in (paths[:-1]):
fullpath = fullpath+ "/" + path
if not os.path.exists(fullpath):
os.makedirs(fullpath)
fullpath = fullpath+"/"+paths[-1]
with open(fullpath, 'w') as f:
f.write(value)
def read_single_status(key):
paths = key.split('.')
paths_len = len(paths)
if(paths_len<2):
print("invalid key path, must be greater than 2 level")
sys.exit(-1)
fullpath = ROOT_PATH
for path in paths:
fullpath = fullpath+ "/" + path
if not os.path.exists(fullpath):
return ""
str=""
with open(fullpath, 'r') as f:
strs=f.readlines()
if(len(strs)>0):
str = strs[0]
return str
def remove_items(key_path):
paths = key_path.split('.')
paths_len = len(paths)
if(paths_len<1):
print("invalid key path, must be greater than 1 level")
sys.exit(-1)
fullpath = ROOT_PATH
for path in paths:
fullpath = fullpath+ "/" + path
if(os.path.exists(fullpath)):
if(os.path.isfile(fullpath)):
os.remove(fullpath)
# print("remove {}".format(fullpath))
if(os.path.isdir(fullpath)):
shutil.rmtree(fullpath)
# print("rmdir {}".format(fullpath))
else:
print("no suck file or dir: {}".format(fullpath))
def main():
argc = len(sys.argv)
if argc < 3 or (sys.argv[1]!= "read" and sys.argv[1]!= "write" and sys.argv[1]!= "clean"):
usage()
sys.exit(-1)
try:
options,args = getopt.getopt(sys.argv[2:],"-h-k:-v:-p:",["help","key=","value=", "path="])
except getopt.GetoptError:
print("error: invalid args")
sys.exit(-1)
keys=[]
values=[]
key_path=[]
if(sys.argv[1] == "write"):
for name,value in options:
if name in ("-h","--help"):
usage()
if name in ("-k","--key"):
keys.append(value)
if name in ("-v","--value"):
values.append(value)
keys_len = len(keys)
values_len = len(values)
if keys_len != values_len:
print("invalid args, keys count is {}, values count is {}".format(keys_len, values_len))
sys.exit(-1)
for index in range(len(keys)):
write_single_status(keys[index], values[index])
sys.exit(0)
if(sys.argv[1] == "read"):
for name,value in options:
if name in ("-h","--help"):
usage()
if name in ("-k","--key"):
keys.append(value)
if name in ("-v","--value"):
values.append(value)
for index in range(len(keys)):
readvalue = read_single_status(keys[index])
if(len(values)>0):
if(index < len(values)-1):
defaultvalue = values[index]
else:
defaultvalue = values[0]
if(readvalue == "" and len(values)>0):
print(defaultvalue)
else:
print(readvalue)
sys.exit(0)
if(sys.argv[1] == "clean"):
for name,value in options:
if name in ("-h","--help"):
usage()
if name in ("-p","--path"):
key_path.append(value)
for index in range(len(key_path)):
remove_items(key_path[index])
sys.exit(0)
if __name__ == '__main__':
main()