58 lines
1.6 KiB
Go
58 lines
1.6 KiB
Go
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package journslog
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import (
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"log/slog"
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"src.lwithers.me.uk/go/journal"
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)
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// LevelMapper maps [slog.Level] values onto [journal.Priority] values.
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type LevelMapper interface {
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LevelMap(slogLevel slog.Level) journal.Priority
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}
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// DefaultLevelMapper returns a [LevelMapper] with the package's default
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// behaviour.
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//
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// The mapping for the four defined [slog.Level] constants is as follows:
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//
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// slog.Level journal.Priority
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// ---------- ----------------
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// slog.LevelDebug (-4) journal.PriDebug
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// slog.LevelInfo (0) journal.PriInfo
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// slog.LevelWarn (4) journal.PriWarning
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// slog.LevelError (8) journal.PriErr
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//
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// Other integer values are mapped as follows:
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//
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// integer slog.Level journal.Priority
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// ------------------ ----------------
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// -∞ ... -4 journal.PriDebug
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// -3 ... 0 journal.PriInfo
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// 1 ... 3 journal.PriNotice
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// 4 ... 7 journal.PriWarning
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// 8 journal.PriErr
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// 9 ... ∞ journal.PriCrit
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func DefaultLevelMapper() LevelMapper {
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return &defaultLevelMapper{}
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}
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type defaultLevelMapper struct{}
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func (*defaultLevelMapper) LevelMap(slogLevel slog.Level) journal.Priority {
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switch {
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case slogLevel <= slog.LevelDebug:
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return journal.PriDebug
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case slogLevel <= slog.LevelInfo:
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return journal.PriInfo
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case slogLevel < slog.LevelWarn:
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return journal.PriNotice
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case slogLevel < slog.LevelError:
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return journal.PriWarning
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case slogLevel == slog.LevelError:
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return journal.PriErr
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default:
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return journal.PriCrit
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}
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}
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