f-34: route: add test for route metadata #34
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Signed-off-by: GnomeZworc <nicolas.boufidjeline@g3e.fr>
This commit is contained in:
parent
a2170fff08
commit
d15454d35b
2 changed files with 94 additions and 17 deletions
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@ -55,7 +55,7 @@ func newConf(t *testing.T, cidr string) Config {
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gw := net.ParseIP("192.168.1.1").To4()
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return Config{
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Network: network,
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VPCGateway: gw,
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InterfaceIP: net.ParseIP("192.168.1.254").To4(),
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VPCRoute: vpcNet,
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DefaultGateway: gw,
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Name: "test",
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@ -136,32 +136,29 @@ func TestGenerateConfig_VxlanEmitsNoRouterOption(t *testing.T) {
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}
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func TestGenerateConfig_ContainsVPCRoute(t *testing.T) {
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conf := newConf(t, "192.168.1.0/29")
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path, _, _ := GenerateConfig(conf)
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content, _ := os.ReadFile(path)
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if !strings.Contains(string(content), "dhcp-option=121,10.0.0.0/16,192.168.1.1") {
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t.Errorf("dhcp-option=121 absente ou incorrecte :\n%s", content)
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routes := route121(t, confLines(t, newConf(t, "192.168.1.0/29")))
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if !strings.Contains(routes, "10.0.0.0/16,192.168.1.254") {
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t.Errorf("route VPC absente, ou next-hop autre que l'interface_ip du subnet :\n%s", routes)
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}
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}
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func TestGenerateConfig_NoVPCRoute(t *testing.T) {
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conf := newConf(t, "192.168.1.0/29")
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conf.VPCRoute = nil
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path, _, _ := GenerateConfig(conf)
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content, _ := os.ReadFile(path)
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if strings.Contains(string(content), "dhcp-option=121,") {
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t.Errorf("dhcp-option=121 présente alors que VPCRoute=nil :\n%s", content)
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routes := route121(t, confLines(t, conf))
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if strings.Contains(routes, "10.0.0.0/16") {
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t.Errorf("route VPC présente alors que VPCRoute=nil :\n%s", routes)
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}
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}
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func TestGenerateConfig_ContainsDhcpRange(t *testing.T) {
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_, network, _ := net.ParseCIDR("10.10.0.0/24")
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conf := Config{
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Network: network,
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Name: "vpc1",
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ConfDir: t.TempDir(),
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Network: network,
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InterfaceIP: net.ParseIP("10.10.0.1").To4(),
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Name: "vpc1",
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ConfDir: t.TempDir(),
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}
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path, _, _ := GenerateConfig(conf)
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content, _ := os.ReadFile(path)
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@ -204,9 +201,10 @@ func TestGenerateConfig_CreatesConfDir(t *testing.T) {
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dir := filepath.Join(t.TempDir(), "sous", "dossier")
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_, network, _ := net.ParseCIDR("10.0.0.0/30")
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conf := Config{
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Network: network,
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Name: "net",
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ConfDir: dir,
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Network: network,
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InterfaceIP: net.ParseIP("10.0.0.1").To4(),
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Name: "net",
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ConfDir: dir,
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}
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if _, _, err := GenerateConfig(conf); err != nil {
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t.Fatalf("GenerateConfig devrait créer les répertoires manquants : %v", err)
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@ -215,3 +213,79 @@ func TestGenerateConfig_CreatesConfDir(t *testing.T) {
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t.Errorf("répertoire %q non créé", dir)
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}
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}
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// --- option 121 : routes classless ---
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func confLines(t *testing.T, c Config) string {
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t.Helper()
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path, _, err := GenerateConfig(c)
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if err != nil {
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t.Fatalf("GenerateConfig : %v", err)
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}
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content, err := os.ReadFile(path)
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if err != nil {
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t.Fatalf("lecture : %v", err)
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}
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return string(content)
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}
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func route121(t *testing.T, content string) string {
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t.Helper()
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for _, line := range strings.Split(content, "\n") {
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if strings.HasPrefix(line, "dhcp-option=121,") {
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return strings.TrimPrefix(line, "dhcp-option=121,")
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}
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}
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t.Fatalf("aucune dhcp-option=121 dans :\n%s", content)
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return ""
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}
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func TestGenerateConfig_AlwaysRoutesToMetadata(t *testing.T) {
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conf := newConf(t, "192.168.1.0/29")
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conf.VPCRoute = nil
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conf.DefaultGateway = nil
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routes := route121(t, confLines(t, conf))
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if !strings.Contains(routes, "169.254.169.254/32,192.168.1.254") {
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t.Errorf("sans route vers le serveur de métadonnées, cloud-init échoue et la VM n'est pas provisionnée :\n%s", routes)
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}
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}
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func TestGenerateConfig_MetadataRouteEvenInBridgeMode(t *testing.T) {
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conf := newConf(t, "192.168.1.0/29")
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conf.VPCRoute = nil
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routes := route121(t, confLines(t, conf))
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if !strings.Contains(routes, "169.254.169.254/32") {
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t.Errorf("le mode bridge a besoin de la même route :\n%s", routes)
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}
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}
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func TestGenerateConfig_DefaultRouteAlsoInOption121(t *testing.T) {
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conf := newConf(t, "192.168.1.0/29")
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conf.VPCRoute = nil
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routes := route121(t, confLines(t, conf))
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if !strings.Contains(routes, "0.0.0.0/0,192.168.1.1") {
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t.Errorf("RFC 3442 : un client qui lit l'option 121 ignore l'option 3, la route par défaut doit donc figurer dans la 121 :\n%s", routes)
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}
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}
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func TestGenerateConfig_NoDefaultRouteMeansNoCatchAllInOption121(t *testing.T) {
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conf := newConf(t, "192.168.1.0/29")
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conf.DefaultGateway = nil
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routes := route121(t, confLines(t, conf))
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if strings.Contains(routes, "0.0.0.0/0") {
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t.Errorf("aucune route par défaut demandée, la 121 ne doit pas en contenir :\n%s", routes)
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}
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}
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func TestGenerateConfig_MissingInterfaceIPIsAnError(t *testing.T) {
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conf := newConf(t, "192.168.1.0/29")
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conf.InterfaceIP = nil
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if _, _, err := GenerateConfig(conf); err == nil {
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t.Error("sans interface_ip aucune route metadata n'est possible : il faut échouer, pas écrire une conf muette")
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}
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}
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@ -1,5 +1,8 @@
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package metadata
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// ServiceIP is the well-known address guests use to reach the metadata server.
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// Traffic to it is DNATed to the subnet gateway by internal/iptables, and the
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// route to it is advertised by internal/dhcp.
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const ServiceIP = "169.254.169.254"
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type NoCloudData struct {
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