fixed typos

node.go

@@ -6,6 +6,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"sort"
 )
 
 var (
@@ -71,13 +72,14 @@ func (nl *NodeList) getServerList(ctx context.Context, c *NodeClient) (err error
 			return
 		}
 	}
+	return
 }
 
 type weightSorter NodeList
 
 func (s weightSorter) Len() int { return len(s) }
 func (s weightSorter) Less(i, j int) bool {
-	return s.weight() < s[j].weight()
+	return s[i].weight() < s[j].weight()
 }
 func (s weightSorter) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
 
@@ -107,7 +109,7 @@ func FilterNodeName(name string) NodeFilter {
 func FilterMaxCores(cores int64) NodeFilter {
 	return func(nl *NodeList) {
 		for i, n := range *nl {
-			if cores > n.MaxCPU {
+			if cores > int64(n.MaxCPU) {
 				nl.remove(i)
 			}
 		}
@@ -170,7 +172,7 @@ func (c *NodeClient) Schedule(ctx context.Context, filters ...NodeFilter) (n *No
 	if err != nil {
 		return
 	}
-	nl.filter(filters)
+	nl.filter(filters...)
 	nl.sortByWeight()
 	if len(nl) == 0 {
 		err = ErrUnschedulable