81 lines
2.1 KiB
Go
81 lines
2.1 KiB
Go
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package nacos
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import (
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"context"
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"fmt"
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"sort"
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"git.wishpal.cn/wishpal_ironfan/xframe/component/logger"
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"github.com/nacos-group/nacos-sdk-go/v2/model"
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"google.golang.org/grpc/resolver"
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)
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type resolvr struct {
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cancelFunc context.CancelFunc
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}
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func (r *resolvr) ResolveNow(resolver.ResolveNowOptions) {}
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// Close closes the resolver.
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func (r *resolvr) Close() {
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r.cancelFunc()
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}
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type watcher struct {
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ctx context.Context
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cancel context.CancelFunc
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out chan<- []string
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}
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func newWatcher(ctx context.Context, cancel context.CancelFunc, out chan<- []string) *watcher {
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return &watcher{
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ctx: ctx,
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cancel: cancel,
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out: out,
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}
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}
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func (nw *watcher) CallBackHandle(services []model.Instance, err error) {
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if err != nil {
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logger.Errorf("[Nacos resolver] watcher call back handle error:%v", err)
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return
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}
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ee := make([]string, 0, len(services))
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for _, s := range services {
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if s.Metadata != nil && s.Metadata["gRPC_port"] != "" {
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ee = append(ee, fmt.Sprintf("%s:%s", s.Ip, s.Metadata["gRPC_port"]))
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} else {
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ee = append(ee, fmt.Sprintf("%s:%d", s.Ip, s.Port))
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}
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}
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nw.out <- ee
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}
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func populateEndpoints(ctx context.Context, clientConn resolver.ClientConn, input <-chan []string) {
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for {
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select {
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case cc := <-input:
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connsSet := make(map[string]struct{}, len(cc))
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for _, c := range cc {
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connsSet[c] = struct{}{}
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}
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conns := make([]resolver.Address, 0, len(connsSet))
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for c := range connsSet {
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conns = append(conns, resolver.Address{Addr: c})
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}
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sort.Sort(byAddressString(conns)) // Don't replace the same address list in the balancer
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_ = clientConn.UpdateState(resolver.State{Addresses: conns})
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case <-ctx.Done():
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logger.Infoln("[Nacos resolver] Watch has been finished")
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return
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}
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}
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}
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// byAddressString sorts resolver.Address by Address Field sorting in increasing order.
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type byAddressString []resolver.Address
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func (p byAddressString) Len() int { return len(p) }
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func (p byAddressString) Less(i, j int) bool { return p[i].Addr < p[j].Addr }
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func (p byAddressString) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
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