| package main |
| |
| import ( |
| "fmt" |
| "io/ioutil" |
| "os" |
| "os/exec" |
| "strings" |
| "testing" |
| |
| "github.com/docker/docker/pkg/iptables" |
| ) |
| |
| func TestLinksEtcHostsRegularFile(t *testing.T) { |
| runCmd := exec.Command(dockerBinary, "run", "--net=host", "busybox", "ls", "-la", "/etc/hosts") |
| out, _, _, err := runCommandWithStdoutStderr(runCmd) |
| errorOut(err, t, out) |
| |
| if !strings.HasPrefix(out, "-") { |
| t.Errorf("/etc/hosts should be a regular file") |
| } |
| |
| deleteAllContainers() |
| |
| logDone("link - /etc/hosts is a regular file") |
| } |
| |
| func TestLinksEtcHostsContentMatch(t *testing.T) { |
| runCmd := exec.Command(dockerBinary, "run", "--net=host", "busybox", "cat", "/etc/hosts") |
| out, _, _, err := runCommandWithStdoutStderr(runCmd) |
| errorOut(err, t, out) |
| |
| hosts, err := ioutil.ReadFile("/etc/hosts") |
| if os.IsNotExist(err) { |
| t.Skip("/etc/hosts does not exist, skip this test") |
| } |
| |
| if out != string(hosts) { |
| t.Errorf("container") |
| } |
| |
| deleteAllContainers() |
| |
| logDone("link - /etc/hosts matches hosts copy") |
| } |
| |
| func TestLinksPingUnlinkedContainers(t *testing.T) { |
| runCmd := exec.Command(dockerBinary, "run", "--rm", "busybox", "sh", "-c", "ping -c 1 alias1 -W 1 && ping -c 1 alias2 -W 1") |
| exitCode, err := runCommand(runCmd) |
| |
| if exitCode == 0 { |
| t.Fatal("run ping did not fail") |
| } else if exitCode != 1 { |
| errorOut(err, t, fmt.Sprintf("run ping failed with errors: %v", err)) |
| } |
| |
| logDone("links - ping unlinked container") |
| } |
| |
| func TestLinksPingLinkedContainers(t *testing.T) { |
| var out string |
| out, _, _ = cmd(t, "run", "-d", "--name", "container1", "busybox", "sleep", "10") |
| idA := stripTrailingCharacters(out) |
| out, _, _ = cmd(t, "run", "-d", "--name", "container2", "busybox", "sleep", "10") |
| idB := stripTrailingCharacters(out) |
| cmd(t, "run", "--rm", "--link", "container1:alias1", "--link", "container2:alias2", "busybox", "sh", "-c", "ping -c 1 alias1 -W 1 && ping -c 1 alias2 -W 1") |
| cmd(t, "kill", idA) |
| cmd(t, "kill", idB) |
| deleteAllContainers() |
| |
| logDone("links - ping linked container") |
| } |
| |
| func TestLinksIpTablesRulesWhenLinkAndUnlink(t *testing.T) { |
| cmd(t, "run", "-d", "--name", "child", "--publish", "8080:80", "busybox", "sleep", "10") |
| cmd(t, "run", "-d", "--name", "parent", "--link", "child:http", "busybox", "sleep", "10") |
| |
| childIP := findContainerIP(t, "child") |
| parentIP := findContainerIP(t, "parent") |
| |
| sourceRule := []string{"FORWARD", "-i", "docker0", "-o", "docker0", "-p", "tcp", "-s", childIP, "--sport", "80", "-d", parentIP, "-j", "ACCEPT"} |
| destinationRule := []string{"FORWARD", "-i", "docker0", "-o", "docker0", "-p", "tcp", "-s", parentIP, "--dport", "80", "-d", childIP, "-j", "ACCEPT"} |
| if !iptables.Exists(sourceRule...) || !iptables.Exists(destinationRule...) { |
| t.Fatal("Iptables rules not found") |
| } |
| |
| cmd(t, "rm", "--link", "parent/http") |
| if iptables.Exists(sourceRule...) || iptables.Exists(destinationRule...) { |
| t.Fatal("Iptables rules should be removed when unlink") |
| } |
| |
| cmd(t, "kill", "child") |
| cmd(t, "kill", "parent") |
| deleteAllContainers() |
| |
| logDone("link - verify iptables when link and unlink") |
| } |
| |
| func TestLinksInspectLinksStarted(t *testing.T) { |
| var ( |
| expected = map[string]struct{}{"/container1:/testinspectlink/alias1": {}, "/container2:/testinspectlink/alias2": {}} |
| result []string |
| ) |
| defer deleteAllContainers() |
| cmd(t, "run", "-d", "--name", "container1", "busybox", "sleep", "10") |
| cmd(t, "run", "-d", "--name", "container2", "busybox", "sleep", "10") |
| cmd(t, "run", "-d", "--name", "testinspectlink", "--link", "container1:alias1", "--link", "container2:alias2", "busybox", "sleep", "10") |
| links, err := inspectFieldJSON("testinspectlink", "HostConfig.Links") |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| err = unmarshalJSON([]byte(links), &result) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| output := convertSliceOfStringsToMap(result) |
| |
| equal := deepEqual(expected, output) |
| |
| if !equal { |
| t.Fatalf("Links %s, expected %s", result, expected) |
| } |
| logDone("link - links in started container inspect") |
| } |
| |
| func TestLinksInspectLinksStopped(t *testing.T) { |
| var ( |
| expected = map[string]struct{}{"/container1:/testinspectlink/alias1": {}, "/container2:/testinspectlink/alias2": {}} |
| result []string |
| ) |
| defer deleteAllContainers() |
| cmd(t, "run", "-d", "--name", "container1", "busybox", "sleep", "10") |
| cmd(t, "run", "-d", "--name", "container2", "busybox", "sleep", "10") |
| cmd(t, "run", "-d", "--name", "testinspectlink", "--link", "container1:alias1", "--link", "container2:alias2", "busybox", "true") |
| links, err := inspectFieldJSON("testinspectlink", "HostConfig.Links") |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| err = unmarshalJSON([]byte(links), &result) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| output := convertSliceOfStringsToMap(result) |
| |
| equal := deepEqual(expected, output) |
| |
| if !equal { |
| t.Fatalf("Links %s, but expected %s", result, expected) |
| } |
| |
| logDone("link - links in stopped container inspect") |
| } |