26 lines
604 B
Go
26 lines
604 B
Go
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// Copyright (C) 2025 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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package slogutil
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import (
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"log/slog"
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)
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// Expensive wraps a log value that is expensive to compute and should only
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// be called if the log line is actually emitted.
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func Expensive(fn func() any) expensive {
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return expensive{fn}
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}
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type expensive struct {
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fn func() any
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}
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func (e expensive) LogValue() slog.Value {
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return slog.AnyValue(e.fn())
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}
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