logging.Server prints a wrong caller path

[kvii]

logging.Server prints a wrong caller path

[dosubot]

🤖

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The issue you're experiencing might be due to the way the logger is set up in your test. The DefaultCaller function in Kratos logs the file and line number of the caller's caller. This means that when you call logger.Log, the caller is TestInfo, but the caller's caller is the testing framework itself, not your TestInfo function. This is why the caller path is not at the same level as helper.Log.

To reproduce this issue, you can create a helper function that calls logger.Log and call this helper function from TestInfo. Here's an example:

package log

import (
	"testing"
)

func TestInfo(_ *testing.T) {
	logger := DefaultLogger
	logger = With(logger, "ts", DefaultTimestamp)
	logger = With(logger, "caller", DefaultCaller)
	logHelper(logger)
}

func logHelper(logger Logger) {
	_ = logger.Log(LevelInfo, "key1", "value1")
}

In this example, DefaultCaller will log the file and line number of logHelper, not TestInfo. This is because logHelper is the caller of logger.Log, but TestInfo is the caller's caller.

I found two similar issues in the Kratos repository that have been solved:

1. [BUG] keep kratos internal log caller depth same which was last updated on November 10, 2023
2. [Bug] The caller depth of log.Filter should be the same as log.logger. which was last updated on August 16, 2023

These issues might provide some insight into your problem.

As for the exact functionality of the logging.Server function in the Kratos framework, I wasn't able to find a specific answer within the repository. It might be beneficial to look into the Kratos documentation or source code for more information.

I hope this helps! If you have any more questions or need further clarification, feel free to ask.

Best,
Dosu

Sources

• [BUG] keep kratos internal log caller depth same
• [Bug] The caller depth of log.Filter should be the same as log.logger.
• log/log_test.go

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