142 lines
2.3 KiB
Go
142 lines
2.3 KiB
Go
package gossip
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import (
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"github.com/micro/go-micro/registry"
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)
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func cp(current []*registry.Service) []*registry.Service {
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var services []*registry.Service
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for _, service := range current {
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// copy service
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s := new(registry.Service)
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*s = *service
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// copy nodes
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var nodes []*registry.Node
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for _, node := range service.Nodes {
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n := new(registry.Node)
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*n = *node
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nodes = append(nodes, n)
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}
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s.Nodes = nodes
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// copy endpoints
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var eps []*registry.Endpoint
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for _, ep := range service.Endpoints {
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e := new(registry.Endpoint)
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*e = *ep
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eps = append(eps, e)
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}
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s.Endpoints = eps
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// append service
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services = append(services, s)
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}
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return services
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}
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func addNodes(old, neu []*registry.Node) []*registry.Node {
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var nodes []*registry.Node
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// add all new nodes
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for _, n := range neu {
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node := *n
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nodes = append(nodes, &node)
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}
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// look at old nodes
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for _, o := range old {
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var exists bool
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// check against new nodes
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for _, n := range nodes {
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// ids match then skip
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if o.Id == n.Id {
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exists = true
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break
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}
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}
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// keep old node
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if !exists {
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node := *o
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nodes = append(nodes, &node)
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}
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}
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return nodes
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}
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func addServices(old, neu []*registry.Service) []*registry.Service {
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var srv []*registry.Service
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for _, s := range neu {
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var seen bool
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for _, o := range old {
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if o.Version == s.Version {
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sp := new(registry.Service)
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// make copy
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*sp = *o
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// set nodes
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sp.Nodes = addNodes(o.Nodes, s.Nodes)
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// mark as seen
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seen = true
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srv = append(srv, sp)
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break
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}
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}
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if !seen {
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srv = append(srv, cp([]*registry.Service{s})...)
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}
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}
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return srv
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}
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func delNodes(old, del []*registry.Node) []*registry.Node {
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var nodes []*registry.Node
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for _, o := range old {
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var rem bool
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for _, n := range del {
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if o.Id == n.Id {
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rem = true
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break
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}
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}
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if !rem {
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nodes = append(nodes, o)
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}
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}
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return nodes
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}
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func delServices(old, del []*registry.Service) []*registry.Service {
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var services []*registry.Service
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for _, o := range old {
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srv := new(registry.Service)
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*srv = *o
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var rem bool
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for _, s := range del {
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if srv.Version == s.Version {
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srv.Nodes = delNodes(srv.Nodes, s.Nodes)
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if len(srv.Nodes) == 0 {
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rem = true
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}
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}
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}
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if !rem {
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services = append(services, srv)
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}
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}
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return services
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}
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