Best Practice - Python Check if a GCP Log Exists

Question

I'm in this situation where I need to verify, with python, if a certain GCP log exists. I've built a precise filter that, if the service works, return a single log. Else, doesn't return anything.

Here is my code, it works, but it doesn't seem a best practice at all.

from google.cloud import logging

logging_client = logging.Client.from_service_account_json(#service account here)
if len(list(logging_client.list_entries(filter_=filter) == 0:
    logger.warning('error')
else:
    entries = logging_client.list_entries(filter_=filter)
    for e in entries: 
        print(e)

It's heavy and calls the api twice, even if it's not necessary.

Do you have suggestions?

Documentation here: https://gcloud.readthedocs.io/en/latest/logging-usage.html — Girolamo, Nov 14 '22 at 14:16

score 1 · Answer 1 · answered Nov 14 '22 at 16:57

1

If I correctly understood your need, I think you can write your program with a single api call.

from google.cloud import logging

logging_client = logging.Client.from_service_account_json(#service account here)

# Your single api call here.
entries = logging_client.list_entries(filter_=filter)
if len(list(entries)) == 0:
    logger.warning('error')
else:
    for e in entries: 
        print(e)

Don't hesitate to correct me if I don't correctly understood your need.

answered Nov 14 '22 at 16:57

Mazlum Tosun

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Hi and thanks, I've already tried that but searching for the lenght of the list, seems to actually make an API call. Because calling entries = logging_client.list_entries(filter_=filter) does not store the entries in memory. If you first perform a len(list(entries)) and then try to do something with entries, you'll find an empty variable. – Girolamo Nov 15 '22 at 08:16

Best Practice - Python Check if a GCP Log Exists

1 Answers1