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28 lines
676 B
Go
28 lines
676 B
Go
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package flume
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import (
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"context"
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)
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// DefaultLogger is returned by FromContext if no other logger has been
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// injected into the context.
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var DefaultLogger = New("")
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type ctxKey struct{}
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var loggerKey = &ctxKey{}
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// WithLogger returns a new context with the specified logger injected into it.
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func WithLogger(ctx context.Context, l Logger) context.Context {
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return context.WithValue(ctx, loggerKey, l)
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}
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// FromContext returns a logger from the context. If the context
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// doesn't contain a logger, the DefaultLogger will be returned.
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func FromContext(ctx context.Context) Logger {
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if l, ok := ctx.Value(loggerKey).(Logger); ok {
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return l
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}
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return DefaultLogger
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}
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