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Log incorrectly prints [Circular] for object property when it shares reference with another property in the same object #228
Description
Same problem was seen in firebase/firebase-functions#1510 for JS/TS
Test case
from firebase_functions import https_fn
from firebase_functions import logger
@https_fn.on_request()
def on_request_example(req: https_fn.Request) -> https_fn.Response:
common_data = {"foo": "bar"}
obj1 = {
"data": common_data,
}
obj2 = {
"data": common_data,
}
logger.debug("TEST 1", {"obj1": obj1, "obj2": obj2})
return https_fn.Response("Oki doki")Steps to reproduce
- Call the function
- View the logs
Expected behavior
When calling the function (e.g. locally) it should log with the json payload:
{
"obj1": { "data": { "foo": "bar" } },
"obj2": { "data": { "foo": "bar" } },
"severity": "DEBUG",
"message": "TEST 1"
}
Actual behavior
Instead it prints the following payload:
{
"obj1": { "data": { "foo": "bar" } },
"obj2": { "data": "[Circular]" },
"severity": "DEBUG",
"message": "TEST 1"
}
Were you able to successfully deploy your functions?
Yes, I had the same issue when viewing the logs in the log explorer.
Activity