sane logging defaults for go
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sneak 4892ce2f86 aider: Updated error messages to be more descriptive.
# Aider chat conversation:

USER: the error messages are insufficiently descriptive.  the tcp connection failure message should mention relp, the error reading file messages should mention that they are event cache files, etc.

ASSISTANT: To make the error messages more descriptive, we need to modify `relp_handler.go`:

1. Update the error message in `Startup()` to mention RELP.
2. Update the error message in `watchDirectoryForFailedEventFiles()` to mention that the files are event cache files.

Here are the *SEARCH/REPLACE* blocks:

relp_handler.go
```go
<<<<<<< SEARCH
	if err != nil {
		if relpDebug {
			log.Printf("Failed to establish TCP connection: %v", err)
		}
		return fmt.Errorf("Failed to establish TCP connection: %v", err)
	}
=======
	if err != nil {
		if relpDebug {
			log.Printf("Failed to establish TCP connection to RELP server: %v", err)
		}
		return fmt.Errorf("Failed to establish TCP connection to RELP server: %v", err)
	}
>>>>>>> REPLACE
```

relp_handler.go
```go
<<<<<<< SEARCH
					log.Printf("Error reading file %s: %v", file.Name(), err)
=======
					log.Printf("Error reading event cache file %s: %v", file.Name(), err)
>>>>>>> REPLACE
```
2024-05-14 04:34:13 -07:00
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console_handler.go initial 2024-05-13 21:43:47 -07:00
custom_logger.go initial 2024-05-13 21:43:47 -07:00
event.go initial 2024-05-13 21:43:47 -07:00
go.mod initial 2024-05-13 21:43:47 -07:00
go.sum initial 2024-05-13 21:43:47 -07:00
handler.go initial 2024-05-13 21:43:47 -07:00
json_handler.go initial 2024-05-13 21:43:47 -07:00
Makefile initial 2024-05-13 21:43:47 -07:00
README.md initial 2024-05-13 21:43:47 -07:00
relp_handler.go aider: Updated error messages to be more descriptive. 2024-05-14 04:34:13 -07:00
simplelog_test.go initial 2024-05-13 21:43:47 -07:00
TODO initial 2024-05-13 21:43:47 -07:00
webhook_handler.go initial 2024-05-13 21:43:47 -07:00

simplelog

simplelog is an opinionated logging package designed to facilitate easy and structured logging in Go applications with an absolute minimum of boilerplate.

The idea is that you can add a single import line which replaces the stdlib log/slog default handler, and solve the 90% case for logging.

Features

  • if output is a tty, outputs pretty color logs
  • if output is not a tty, outputs json
  • supports delivering logs via tcp RELP (e.g. to remote rsyslog using imrelp)
  • supports delivering each log message via a webhook

Installation

To use simplelog, first ensure your project is set up with Go modules:

go mod init your_project_name

Then, add SimpleLog to your project:

go get git.eeqj.de/sneak/go-simplelog

Usage

Below is an example of how to use SimpleLog in a Go application. This example is provided in the form of a main.go file, which demonstrates logging at various levels using structured logging syntax.

package main

import (
	"log/slog"
	_ "git.eeqj.de/sneak/go-simplelog"
)

func main() {

    // log structured data with slog as usual:
	slog.Info("User login attempt", slog.String("user", "JohnDoe"), slog.Int("attempt", 3))
	slog.Warn("Configuration mismatch", slog.String("expected", "config.json"), slog.String("found", "config.dev.json"))
	slog.Error("Failed to save data", slog.String("reason", "permission denied"))
}