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LogLayer for Go

Transport-agnostic structured logging for Go. A fluent API on top of zerolog, zap, logrus, phuslu/log, charmbracelet/log, log/slog, OpenTelemetry, or any custom transport. Module path: `go.loglayer.dev/v3`. GitHub: `github.com/loglayer/loglayer-go`.

Their llms.txt

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# LogLayer for Go

> Transport-agnostic structured logging for Go. A fluent API on top of zerolog, zap, logrus, phuslu/log, charmbracelet/log, log/slog, OpenTelemetry, or any custom transport. Module path: `go.loglayer.dev/v3`. GitHub: `github.com/loglayer/loglayer-go`.

## Installation

```sh
go get go.loglayer.dev/v3
```

Most transports and plugins ship as their own modules. Install only what you import:

```sh
go get go.loglayer.dev/transports/structured/v3
go get go.loglayer.dev/transports/zerolog/v3
go get go.loglayer.dev/plugins/redact/v3
```

## Quick Start

```go
package main

import (
    "go.loglayer.dev/v3"
    "go.loglayer.dev/transports/structured/v3"
)

func main() {
    log := loglayer.New(loglayer.Config{
        Transport: structured.New(structured.Config{}),
    })

    log.Info("hello world")
}
```

## Log Levels

Seven levels, in priority order:

```go
log.Trace("detailed debugging")
log.Debug("debug information")
log.Info("informational message")
log.Warn("warning message")
log.Error("error occurred")
log.Fatal("critical failure")  // dispatches then calls os.Exit(1) unless DisableFatalExit
log.Panic("unrecoverable")     // dispatches then panics with the joined message string

// Multiple values join with a space
log.Info("user", 123, "logged in")
```

## Metadata (per-message data)

Data attached to a single log entry only.

```go
// Map-style metadata nests under the "metadata" key (MetadataFieldName default)
…

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