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Use empty list instead of nil when adding services (removes unnecessary churn) #3866

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Use empty list instead of nil when adding services (removes unnecessary churn) #3866

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5 changes: 5 additions & 0 deletions agent/agent.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1551,6 +1551,11 @@ func (a *Agent) AddService(service *structs.NodeService, chkTypes []*structs.Che
"all alpha-numerics and dashes.", service.Service)
}

// Use empty list instead of nil
if service.Tags == nil {
service.Tags = make([]string, 0)
}

// Warn if any tags are incompatible with DNS
for _, tag := range service.Tags {
if InvalidDnsRe.MatchString(tag) {
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