50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
package resolver
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import (
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"context"
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"time"
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"github.com/FAU-CDI/wisski-distillery/pkg/timex"
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"github.com/tkw1536/goprogram/stream"
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)
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// updatePrefixes starts updating prefixes
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func (resolver *Resolver) updatePrefixes(io stream.IOStream, ctx context.Context) {
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timex.SetInterval(ctx, resolver.RefreshInterval, func(t time.Time) {
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io.Printf("[%s]: reloading prefixes", t.String())
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prefixes, _ := resolver.AllPrefixes()
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resolver.prefixes.Set(prefixes)
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})
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}
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// AllPrefixes returns a list of all prefixes from the server.
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// Prefixes may be cached on the server
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func (resolver *Resolver) AllPrefixes() (map[string]string, error) {
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instances, err := resolver.Instances.All()
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if err != nil {
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return nil, err
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}
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gPrefixes := make(map[string]string)
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var lastErr error
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for _, instance := range instances {
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if instance.NoPrefix() {
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continue
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}
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url := instance.URL().String()
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// failed to fetch prefixes for this particular instance
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// => skip it!
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prefixes, err := instance.PrefixesCached()
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if err != nil {
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lastErr = err
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continue
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}
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for _, p := range prefixes {
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gPrefixes[p] = url
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}
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}
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return gPrefixes, lastErr
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}
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