31 lines
724 B
Go
31 lines
724 B
Go
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package resolver
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import (
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"context"
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"time"
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)
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// Logger is the logger assumed by this package
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type Logger interface {
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Debugf(format string, v ...interface{})
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Debug(message string)
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}
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// LoggingResolver is a resolver that emits events
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type LoggingResolver struct {
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Resolver
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Logger Logger
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}
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// LookupHost returns the IP addresses of a host
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func (r LoggingResolver) LookupHost(ctx context.Context, hostname string) ([]string, error) {
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r.Logger.Debugf("resolve %s...", hostname)
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start := time.Now()
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addrs, err := r.Resolver.LookupHost(ctx, hostname)
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stop := time.Now()
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r.Logger.Debugf("resolve %s... (%+v, %+v) in %s", hostname, addrs, err, stop.Sub(start))
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return addrs, err
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}
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var _ Resolver = LoggingResolver{}
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