Move the network resolver out (#1944)

resolver/static/static.go

@@ -0,0 +1,33 @@
+// Package static is a static resolver
+package static
+
+import (
+	"github.com/micro/go-micro/v3/resolver"
+)
+
+// Resolver returns a static list of nodes. In the event the node list
+// is not present it will return the name of the network passed in.
+type Resolver struct {
+	// A static list of nodes
+	Nodes []string
+}
+
+// Resolve returns the list of nodes
+func (r *Resolver) Resolve(name string) ([]*resolver.Record, error) {
+	// if there are no nodes just return the name
+	if len(r.Nodes) == 0 {
+		return []*resolver.Record{
+			{Address: name},
+		}, nil
+	}
+
+	records := make([]*resolver.Record, 0, len(r.Nodes))
+
+	for _, node := range r.Nodes {
+		records = append(records, &resolver.Record{
+			Address: node,
+		})
+	}
+
+	return records, nil
+}