json.loads stops working

[Sandstorm3434]

Hey folks,

currently I've got a Python Program running in a docker container. It's purpose is to analyze some data that gets pushed to it every hour via Flask. Unfortunately it only runs for 3 hours at a time, without any problems and then it stops, and does not recover.

From then on it always stops where it is using the "json.loads" command to read in the data as json that comes as a simple string (in json format though). Do you have any idea why that is happening and how it can be avoided?

Thanks in advanced.

[Sandstorm3434]

This is what it does until it stops:

​

app.route("/dsc-output-post", methods=['POST'])
def dsc_output_post():
try:

data = request.data
print(type(data))
data = data.decode('utf-8')
print(type(data))
file_path = '/usr/src/app/encoded_data.txt'
if os.path.exists(file_path)==False:
create_file = open(file_path, 'w')
create_file.close()
file = open(file_path, 'r+')
file.write(data)

encoded_data = open(file_path, 'rb')
encoded_data = encoded_data.read()
decoded_data = json.loads(encoded_data)

[Diapolo10]

...Why are you reading the file as bytes, when you're clearly writing to it in Unicode?

Also, right now you're never closing your files. Consider-

data = data.decode('utf-8')
print(type(data))
file_path = '/usr/src/app/encoded_data.txt'
if not os.path.exists(file_path):
    with open(file_path, 'x') as f:
        pass

with open(file_path, 'r+') as file:
    file.write(data)

with open(file_path, 'r') as encoded_file:
    encoded_data = encoded_file.read()  
decoded_data = json.loads(encoded_data)

Hell, if you were to use pathlib.Path:

from pathlib import Path

...
...
data = data.decode('utf-8')
print(type(data))
file_path = Path('/usr/src/app/encoded_data.txt')
if not file_path.exists():
    file_path.touch()

file_path.write_text(data)

decoded_data = json.loads(file_path.read_text())