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package kuberesolver
import (
"fmt"
"log"
"net/url"
"strings"
"testing"
"google.golang.org/grpc/resolver"
"google.golang.org/grpc/serviceconfig"
)
func newTestBuilder() resolver.Builder {
cl := NewInsecureK8sClient("http://127.0.0.1:8001")
return NewBuilder(cl, kubernetesSchema)
}
type fakeConn struct {
cmp chan struct{}
found []string
}
func (fc *fakeConn) UpdateState(resolver.State) error {
return nil
}
func (fc *fakeConn) ReportError(e error) {
log.Println(e)
}
func (fc *fakeConn) ParseServiceConfig(_ string) *serviceconfig.ParseResult {
return &serviceconfig.ParseResult{
Config: nil,
Err: fmt.Errorf("no implementation for ParseServiceConfig"),
}
}
func (fc *fakeConn) NewAddress(addresses []resolver.Address) {
for i, a := range addresses {
fc.found = append(fc.found, a.Addr)
fmt.Printf("%d, address: %s\n", i, a.Addr)
fmt.Printf("%d, servername: %s\n", i, a.ServerName)
}
fc.cmp <- struct{}{}
}
func (*fakeConn) NewServiceConfig(serviceConfig string) {
fmt.Printf("serviceConfig: %s\n", serviceConfig)
}
func TestBuilder(t *testing.T) {
t.Skip("Skipping test that tries to query a kubernetes host")
bl := newTestBuilder()
fc := &fakeConn{
cmp: make(chan struct{}),
}
_, err := bl.Build(parseTarget("kubernetes://kube-dns.kube-system:53"), fc, resolver.BuildOptions{})
if err != nil {
t.Fatal(err)
}
<-fc.cmp
if len(fc.found) == 0 {
t.Fatal("could not found endpoints")
}
// fmt.Printf("ResolveNow \n")
// rs.ResolveNow(resolver.ResolveNowOptions{})
// <-fc.cmp
}
// copied from grpc package to test parsing endpoints
// split2 returns the values from strings.SplitN(s, sep, 2).
// If sep is not found, it returns ("", "", false) instead.
func split2(s, sep string) (string, string, bool) {
spl := strings.SplitN(s, sep, 2)
if len(spl) < 2 {
return "", "", false
}
return spl[0], spl[1], true
}
func parseTarget(target string) resolver.Target {
u, err := url.Parse(target)
if err != nil {
panic(err)
}
return resolver.Target{
URL: *u,
}
}
func TestParseResolverTarget(t *testing.T) {
for i, test := range []struct {
target resolver.Target
want targetInfo
err bool
}{
{parseTarget("/"), targetInfo{"", "", "", false, false}, true},
{parseTarget("a"), targetInfo{"a", "", "", false, true}, false},
{parseTarget("/a"), targetInfo{"a", "", "", false, true}, false},
{parseTarget("//a/b"), targetInfo{"b", "a", "", false, true}, false},
{parseTarget("a.b"), targetInfo{"a", "b", "", false, true}, false},
{parseTarget("/a.b"), targetInfo{"a", "b", "", false, true}, false},
{parseTarget("/a.b:80"), targetInfo{"a", "b", "80", false, false}, false},
{parseTarget("/a.b:port"), targetInfo{"a", "b", "port", true, false}, false},
{parseTarget("//a/b:port"), targetInfo{"b", "a", "port", true, false}, false},
{parseTarget("//a/b:port"), targetInfo{"b", "a", "port", true, false}, false},
{parseTarget("//a/b:80"), targetInfo{"b", "a", "80", false, false}, false},
{parseTarget("a.b.svc.cluster.local"), targetInfo{"a", "b", "", false, true}, false},
{parseTarget("/a.b.svc.cluster.local:80"), targetInfo{"a", "b", "80", false, false}, false},
{parseTarget("/a.b.svc.cluster.local:port"), targetInfo{"a", "b", "port", true, false}, false},
{parseTarget("//a.b.svc.cluster.local"), targetInfo{"a", "b", "", false, true}, false},
{parseTarget("//a.b.svc.cluster.local:80"), targetInfo{"a", "b", "80", false, false}, false},
} {
got, err := parseResolverTarget(test.target)
if err == nil && test.err {
t.Errorf("case %d: want error but got nil", i)
continue
}
if err != nil && !test.err {
t.Errorf("case %d: got '%v' error but don't want an error", i, err)
continue
}
if got != test.want {
t.Errorf("case %d parseResolverTarget(%q) = %+v, want %+v", i, &test.target.URL, got, test.want)
}
}
}
func TestParseTargets(t *testing.T) {
for i, test := range []struct {
target string
want targetInfo
err bool
}{
{"", targetInfo{}, true},
{"kubernetes:///", targetInfo{}, true},
{"kubernetes://a:30", targetInfo{"a", "", "30", false, false}, false},
{"kubernetes://a/", targetInfo{"a", "", "", false, true}, false},
{"kubernetes:///a", targetInfo{"a", "", "", false, true}, false},
{"kubernetes://a/b", targetInfo{"b", "a", "", false, true}, false},
{"kubernetes://a.b/", targetInfo{"a", "b", "", false, true}, false},
{"kubernetes:///a.b:80", targetInfo{"a", "b", "80", false, false}, false},
{"kubernetes:///a.b:port", targetInfo{"a", "b", "port", true, false}, false},
{"kubernetes:///a:port", targetInfo{"a", "", "port", true, false}, false},
{"kubernetes://x/a:port", targetInfo{"a", "x", "port", true, false}, false},
{"kubernetes://a.x:30/", targetInfo{"a", "x", "30", false, false}, false},
{"kubernetes://a.b.svc.cluster.local", targetInfo{"a", "b", "", false, true}, false},
{"kubernetes://a.b.svc.cluster.local:80", targetInfo{"a", "b", "80", false, false}, false},
{"kubernetes:///a.b.svc.cluster.local", targetInfo{"a", "b", "", false, true}, false},
{"kubernetes:///a.b.svc.cluster.local:80", targetInfo{"a", "b", "80", false, false}, false},
{"kubernetes:///a.b.svc.cluster.local:port", targetInfo{"a", "b", "port", true, false}, false},
} {
got, err := parseResolverTarget(parseTarget(test.target))
if err == nil && test.err {
t.Errorf("case %d: want error but got nil", i)
continue
}
if err != nil && !test.err {
t.Errorf("case %d:got '%v' error but don't want an error", i, err)
continue
}
if got != test.want {
t.Errorf("case %d: parseTarget(%q) = %+v, want %+v", i, test.target, got, test.want)
}
}
}
|
