Sam Therapy
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continuous-integration/drone/push Build is passing
Instead of copying the opts struct every time it gets passed around, it should be created once and passed through reference. This should reduce memory utilization, unfortunately I cannot test it since this program runs so fast pprof won't report anything useful. I think I found all of them 🙂 Co-authored-by: Sam Therapy <sam@samtherapy.net> Reviewed-on: #132 Reviewed-by: grumbulon <grumbulon@grumbulon.xyz>
63 lines
1.3 KiB
Go
63 lines
1.3 KiB
Go
// SPDX-License-Identifier: BSD-3-Clause
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package resolvers
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import (
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"net"
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"strconv"
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"strings"
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"git.froth.zone/sam/awl/pkg/util"
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"github.com/miekg/dns"
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)
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const (
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tcp = "tcp"
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udp = "udp"
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)
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// Resolver is the main resolver interface.
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type Resolver interface {
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LookUp(*dns.Msg) (util.Response, error)
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}
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// LoadResolver loads the respective resolver for performing a DNS query.
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func LoadResolver(opts *util.Options) (Resolver, error) {
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switch {
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case opts.HTTPS:
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opts.Logger.Info("loading DNS-over-HTTPS resolver")
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if !strings.HasPrefix(opts.Request.Server, "https://") {
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opts.Request.Server = "https://" + opts.Request.Server
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}
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return &HTTPSResolver{
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opts: opts,
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}, nil
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case opts.QUIC:
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opts.Logger.Info("loading DNS-over-QUIC resolver")
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opts.Request.Server = net.JoinHostPort(opts.Request.Server, strconv.Itoa(opts.Request.Port))
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return &QUICResolver{
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opts: opts,
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}, nil
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case opts.DNSCrypt:
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opts.Logger.Info("loading DNSCrypt resolver")
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if !strings.HasPrefix(opts.Request.Server, "sdns://") {
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opts.Request.Server = "sdns://" + opts.Request.Server
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}
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return &DNSCryptResolver{
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opts: opts,
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}, nil
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default:
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opts.Logger.Info("loading standard/DNS-over-TLS resolver")
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opts.Request.Server = net.JoinHostPort(opts.Request.Server, strconv.Itoa(opts.Request.Port))
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return &StandardResolver{
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opts: opts,
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}, nil
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}
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}
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