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60 lines
1.1 KiB
60 lines
1.1 KiB
4 years ago
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package log
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import (
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"net"
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"strings"
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"time"
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)
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type DNSLog struct {
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Server string
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Domain string
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Result []net.IP
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Status dnsStatus
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Elapsed time.Duration
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Error error
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}
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func (l *DNSLog) String() string {
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builder := &strings.Builder{}
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// Server got answer: domain -> [ip1, ip2] 23ms
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builder.WriteString(l.Server)
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builder.WriteString(" ")
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builder.WriteString(string(l.Status))
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builder.WriteString(" ")
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builder.WriteString(l.Domain)
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builder.WriteString(" -> [")
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builder.WriteString(joinNetIP(l.Result))
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builder.WriteString("]")
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if l.Elapsed > 0 {
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builder.WriteString(" ")
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builder.WriteString(l.Elapsed.String())
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}
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if l.Error != nil {
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builder.WriteString(" <")
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builder.WriteString(l.Error.Error())
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builder.WriteString(">")
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}
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return builder.String()
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}
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type dnsStatus string
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var (
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DNSQueried = dnsStatus("got answer:")
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DNSCacheHit = dnsStatus("cache HIT:")
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)
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func joinNetIP(ips []net.IP) string {
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if len(ips) == 0 {
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return ""
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}
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sips := make([]string, 0, len(ips))
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for _, ip := range ips {
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sips = append(sips, ip.String())
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}
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return strings.Join(sips, ", ")
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}
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