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Implement SRV records

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Signed-off-by: Miek Gieben <miek@miek.nl>
This commit is contained in:
Miek Gieben
2020-01-18 20:12:25 +01:00
parent 63d3dfb0e1
commit 9d912fe2ca
5 changed files with 89 additions and 29 deletions
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21
plugin/traffic/xds/assignment.go
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@@ -59,12 +59,11 @@ func (a *assignment) clusters() []string {
return clusters
}
// Select selects a backend from cluster load assignments, using weighted random selection. It only selects
// backends that are reporting healthy.
func (a *assignment) Select(cluster string) (net.IP, bool) {
// Select selects a backend from cluster load assignments, using weighted random selection. It only selects backends that are reporting healthy.
func (a *assignment) Select(cluster string) (ip net.IP, port uint16, exists bool) {
cla := a.ClusterLoadAssignment(cluster)
if cla == nil {
return nil, false
return nil, 0, false
}
total := 0
@@ -79,7 +78,7 @@ func (a *assignment) Select(cluster string) (net.IP, bool) {
}
}
if healthy == 0 {
return nil, true
return nil, 0, true
}
if total == 0 {
@@ -92,12 +91,14 @@ func (a *assignment) Select(cluster string) (net.IP, bool) {
continue
}
if r == i {
return net.ParseIP(lb.GetEndpoint().GetAddress().GetSocketAddress().GetAddress()), true
addr := net.ParseIP(lb.GetEndpoint().GetAddress().GetSocketAddress().GetAddress())
port := uint16(lb.GetEndpoint().GetAddress().GetSocketAddress().GetPortValue())
return addr, port, true
}
i++
}
}
return nil, true
return nil, 0, true
}
r := rand.Intn(total) + 1
@@ -108,9 +109,11 @@ func (a *assignment) Select(cluster string) (net.IP, bool) {
}
r -= int(lb.GetLoadBalancingWeight().GetValue())
if r <= 0 {
return net.ParseIP(lb.GetEndpoint().GetAddress().GetSocketAddress().GetAddress()), true
addr := net.ParseIP(lb.GetEndpoint().GetAddress().GetSocketAddress().GetAddress())
port := uint16(lb.GetEndpoint().GetAddress().GetSocketAddress().GetPortValue())
return addr, port, true
}
}
}
return nil, true
return nil, 0, true
}