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|
package overlay
import (
"context"
"fmt"
"net"
"os"
"syscall"
"testing"
"time"
"golang.org/x/sys/unix"
"github.com/docker/docker/pkg/plugingetter"
"github.com/docker/libkv/store/consul"
"github.com/docker/libnetwork/datastore"
"github.com/docker/libnetwork/discoverapi"
"github.com/docker/libnetwork/driverapi"
"github.com/docker/libnetwork/netlabel"
_ "github.com/docker/libnetwork/testutils"
"github.com/vishvananda/netlink/nl"
)
func init() {
consul.Register()
}
type driverTester struct {
t *testing.T
d *driver
}
const testNetworkType = "overlay"
func setupDriver(t *testing.T) *driverTester {
dt := &driverTester{t: t}
config := make(map[string]interface{})
config[netlabel.GlobalKVClient] = discoverapi.DatastoreConfigData{
Scope: datastore.GlobalScope,
Provider: "consul",
Address: "127.0.0.01:8500",
}
if err := Init(dt, config); err != nil {
t.Fatal(err)
}
iface, err := net.InterfaceByName("eth0")
if err != nil {
t.Fatal(err)
}
addrs, err := iface.Addrs()
if err != nil || len(addrs) == 0 {
t.Fatal(err)
}
data := discoverapi.NodeDiscoveryData{
Address: addrs[0].String(),
Self: true,
}
dt.d.DiscoverNew(discoverapi.NodeDiscovery, data)
return dt
}
func cleanupDriver(t *testing.T, dt *driverTester) {
ch := make(chan struct{})
go func() {
Fini(dt.d)
close(ch)
}()
select {
case <-ch:
case <-time.After(10 * time.Second):
t.Fatal("test timed out because Fini() did not return on time")
}
}
func (dt *driverTester) GetPluginGetter() plugingetter.PluginGetter {
return nil
}
func (dt *driverTester) RegisterDriver(name string, drv driverapi.Driver,
cap driverapi.Capability) error {
if name != testNetworkType {
dt.t.Fatalf("Expected driver register name to be %q. Instead got %q",
testNetworkType, name)
}
if _, ok := drv.(*driver); !ok {
dt.t.Fatalf("Expected driver type to be %T. Instead got %T",
&driver{}, drv)
}
dt.d = drv.(*driver)
return nil
}
func TestOverlayInit(t *testing.T) {
if err := Init(&driverTester{t: t}, nil); err != nil {
t.Fatal(err)
}
}
func TestOverlayFiniWithoutConfig(t *testing.T) {
dt := &driverTester{t: t}
if err := Init(dt, nil); err != nil {
t.Fatal(err)
}
cleanupDriver(t, dt)
}
func TestOverlayConfig(t *testing.T) {
dt := setupDriver(t)
time.Sleep(1 * time.Second)
d := dt.d
if d.notifyCh == nil {
t.Fatal("Driver notify channel wasn't initialized after Config method")
}
if d.exitCh == nil {
t.Fatal("Driver serfloop exit channel wasn't initialized after Config method")
}
if d.serfInstance == nil {
t.Fatal("Driver serfinstance hasn't been initialized after Config method")
}
cleanupDriver(t, dt)
}
func TestOverlayType(t *testing.T) {
dt := &driverTester{t: t}
if err := Init(dt, nil); err != nil {
t.Fatal(err)
}
if dt.d.Type() != testNetworkType {
t.Fatalf("Expected Type() to return %q. Instead got %q", testNetworkType,
dt.d.Type())
}
}
// Test that the netlink socket close unblock the watchMiss to avoid deadlock
func TestNetlinkSocket(t *testing.T) {
// This is the same code used by the overlay driver to create the netlink interface
// for the watch miss
nlSock, err := nl.Subscribe(syscall.NETLINK_ROUTE, syscall.RTNLGRP_NEIGH)
if err != nil {
t.Fatal()
}
// set the receive timeout to not remain stuck on the RecvFrom if the fd gets closed
tv := unix.NsecToTimeval(soTimeout.Nanoseconds())
err = nlSock.SetReceiveTimeout(&tv)
if err != nil {
t.Fatal()
}
n := &network{id: "testnetid"}
ch := make(chan error)
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
go func() {
n.watchMiss(nlSock, fmt.Sprintf("/proc/%d/task/%d/ns/net", os.Getpid(), syscall.Gettid()))
ch <- nil
}()
time.Sleep(5 * time.Second)
nlSock.Close()
select {
case <-ch:
case <-ctx.Done():
{
t.Fatalf("Timeout expired")
}
}
}
|
