forked from TrueCloudLab/frostfs-sdk-go
35 lines
697 B
Go
35 lines
697 B
Go
package resolver
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import (
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"net"
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cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
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)
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// DNS looks up NeoFS names using system DNS.
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//
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// See also net package.
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type DNS struct{}
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// ResolveContainerName looks up for DNS TXT records for the given domain name
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// and returns the first one which represents valid container ID in a string format.
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// Otherwise, returns an error.
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//
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// See also net.LookupTXT.
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func (x *DNS) ResolveContainerName(name string) (*cid.ID, error) {
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records, err := net.LookupTXT(name)
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if err != nil {
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return nil, err
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}
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var id cid.ID
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for i := range records {
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err = id.Parse(records[i])
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if err == nil {
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return &id, nil
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}
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}
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return nil, errNotFound
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}
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