First commit in strategy rework

selector/roundrobin/round_robin_selector.go

@@ -1,98 +0,0 @@
-package roundrobin
-
-import (
-	"sync"
-
-	"github.com/micro/go-micro/registry"
-	"github.com/micro/go-micro/selector"
-)
-
-type roundRobinSelector struct {
-	so selector.Options
-}
-
-func (r *roundRobinSelector) Init(opts ...selector.Option) error {
-	for _, o := range opts {
-		o(&r.so)
-	}
-	return nil
-}
-
-func (r *roundRobinSelector) Options() selector.Options {
-	return r.so
-}
-
-func (r *roundRobinSelector) Select(service string, opts ...selector.SelectOption) (selector.Next, error) {
-	var sopts selector.SelectOptions
-	for _, opt := range opts {
-		opt(&sopts)
-	}
-
-	// get the service
-	services, err := r.so.Registry.GetService(service)
-	if err != nil {
-		return nil, err
-	}
-
-	// apply the filters
-	for _, filter := range sopts.Filters {
-		services = filter(services)
-	}
-
-	// if there's nothing left, return
-	if len(services) == 0 {
-		return nil, selector.ErrNotFound
-	}
-
-	var nodes []*registry.Node
-
-	for _, service := range services {
-		for _, node := range service.Nodes {
-			nodes = append(nodes, node)
-		}
-	}
-
-	if len(nodes) == 0 {
-		return nil, selector.ErrNotFound
-	}
-
-	var i int
-	var mtx sync.Mutex
-
-	return func() (*registry.Node, error) {
-		mtx.Lock()
-		defer mtx.Unlock()
-		i++
-		return nodes[i%len(nodes)], nil
-	}, nil
-}
-
-func (r *roundRobinSelector) Mark(service string, node *registry.Node, err error) {
-	return
-}
-
-func (r *roundRobinSelector) Reset(service string) {
-	return
-}
-
-func (r *roundRobinSelector) Close() error {
-	return nil
-}
-
-func (r *roundRobinSelector) String() string {
-	return "roundrobin"
-}
-
-func NewSelector(opts ...selector.Option) selector.Selector {
-	var sopts selector.Options
-
-	for _, opt := range opts {
-		opt(&sopts)
-	}
-
-	if sopts.Registry == nil {
-		sopts.Registry = registry.DefaultRegistry
-	}
-
-	return &roundRobinSelector{sopts}
-}

selector/roundrobin/round_robin_selector_test.go

@@ -1,33 +0,0 @@
-package roundrobin
-
-import (
-	"testing"
-
-	"github.com/micro/go-micro/registry/mock"
-	"github.com/micro/go-micro/selector"
-)
-
-func TestRoundRobinSelector(t *testing.T) {
-	counts := map[string]int{}
-
-	rr := &roundRobinSelector{
-		so: selector.Options{
-			Registry: mock.NewRegistry(),
-		},
-	}
-
-	next, err := rr.Select("foo")
-	if err != nil {
-		t.Errorf("Unexpected error calling rr select: %v", err)
-	}
-
-	for i := 0; i < 100; i++ {
-		node, err := next()
-		if err != nil {
-			t.Errorf("Expected node err, got err: %v", err)
-		}
-		counts[node.Id]++
-	}
-
-	t.Logf("Round Robin Counts %v", counts)
-}