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preallocated slices (#917)
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parent
4a694c9d02
commit
f67c5e779f
@ -101,7 +101,7 @@ func (r *routerSelector) getRoutes(service string) ([]router.Route, error) {
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return nil, selector.ErrNoneAvailable
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}
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var routes []router.Route
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routes := make([]router.Route, 0, len(pbRoutes.Routes))
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// convert from pb to []*router.Route
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for _, r := range pbRoutes.Routes {
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@ -14,7 +14,7 @@ func init() {
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// Random is a random strategy algorithm for node selection
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func Random(services []*registry.Service) Next {
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var nodes []*registry.Node
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nodes := make([]*registry.Node, 0, len(services))
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for _, service := range services {
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nodes = append(nodes, service.Nodes...)
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@ -38,7 +38,7 @@ func (c *etcd) Read() (*source.ChangeSet, error) {
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return nil, fmt.Errorf("source not found: %s", c.prefix)
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}
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var kvs []*mvccpb.KeyValue
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kvs := make([]*mvccpb.KeyValue, 0, len(rsp.Kvs))
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for _, v := range rsp.Kvs {
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kvs = append(kvs, (*mvccpb.KeyValue)(v))
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}
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@ -282,7 +282,7 @@ func (n *node) Peers() []Node {
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n.RLock()
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defer n.RUnlock()
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var peers []Node
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peers := make([]Node, 0, len(n.peers))
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for _, nodePeer := range n.peers {
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peer := nodePeer.getTopology(MaxDepth)
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peers = append(peers, peer)
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@ -38,7 +38,7 @@ func toValues(v []*pb.Value) []*registry.Value {
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}
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func ToProto(s *registry.Service) *pb.Service {
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var endpoints []*pb.Endpoint
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endpoints := make([]*pb.Endpoint, 0, len(s.Endpoints))
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for _, ep := range s.Endpoints {
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var request, response *pb.Value
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@ -22,7 +22,7 @@ func (r *Router) Lookup(ctx context.Context, req *pb.LookupRequest, resp *pb.Loo
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return errors.InternalServerError("go.micro.router", "failed to lookup routes: %v", err)
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}
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var respRoutes []*pb.Route
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respRoutes := make([]*pb.Route, 0, len(routes))
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for _, route := range routes {
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respRoute := &pb.Route{
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Service: route.Service,
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@ -188,7 +188,7 @@ func (s *svc) Advertise() (<-chan *router.Advert, error) {
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// Process processes incoming adverts
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func (s *svc) Process(advert *router.Advert) error {
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var events []*pb.Event
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events := make([]*pb.Event, 0, len(advert.Events))
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for _, event := range advert.Events {
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route := &pb.Route{
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Service: event.Route.Service,
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@ -194,7 +194,7 @@ func (t *table) Query(q ...QueryOption) ([]Route, error) {
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return findRoutes(t.routes[opts.Service], opts.Address, opts.Gateway, opts.Network, opts.Router), nil
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}
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var results []Route
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results := make([]Route, 0, len(t.routes))
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// search through all destinations
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for _, routes := range t.routes {
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results = append(results, findRoutes(routes, opts.Address, opts.Gateway, opts.Network, opts.Router)...)
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@ -139,7 +139,7 @@ func (k *kubernetes) Update(s *runtime.Service) error {
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func (k *kubernetes) List() ([]*runtime.Service, error) {
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// TODO: this should list the k8s deployments
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// but for now we return in-memory tracked services
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var services []*runtime.Service
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services := make([]*runtime.Service, 0, len(k.services))
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k.RLock()
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defer k.RUnlock()
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@ -490,7 +490,7 @@ func (s *rpcServer) Register() error {
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return subscriberList[i].topic > subscriberList[j].topic
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})
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var endpoints []*registry.Endpoint
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endpoints := make([]*registry.Endpoint, 0, len(handlerList)+len(subscriberList))
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for _, n := range handlerList {
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endpoints = append(endpoints, s.handlers[n].Endpoints()...)
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}
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