func TestCompare(t *testing.T) {
volumes1 := make(map[string]struct{})
volumes1["/test1"] = struct{}{}
ports1 := make(nat.PortSet)
ports1[nat.Port("1111/tcp")] = struct{}{}
ports1[nat.Port("2222/tcp")] = struct{}{}
config1 := Config{
ExposedPorts: ports1,
Env: []string{"VAR1=1", "VAR2=2"},
Volumes: volumes1,
}
ports3 := make(nat.PortSet)
ports3[nat.Port("0000/tcp")] = struct{}{}
ports3[nat.Port("2222/tcp")] = struct{}{}
config3 := Config{
ExposedPorts: ports3,
Volumes: volumes1,
}
volumes2 := make(map[string]struct{})
volumes2["/test2"] = struct{}{}
config5 := Config{
Env: []string{"VAR1=1", "VAR2=2"},
Volumes: volumes2,
}
if Compare(&config1, &config3) {
t.Fatalf("Compare should return false, ExposedPorts are different")
}
if Compare(&config1, &config5) {
t.Fatalf("Compare should return false, Volumes are different")
}
if !Compare(&config1, &config1) {
t.Fatalf("Compare should return true")
}
}
func TestLinkNew(t *testing.T) {
ports := make(nat.PortSet)
ports[nat.Port("6379/tcp")] = struct{}{}
link, err := NewLink("172.0.17.3", "172.0.17.2", "/db/docker", nil, ports)
if err != nil {
t.Fatal(err)
}
if link == nil {
t.FailNow()
}
if link.Name != "/db/docker" {
t.Fail()
}
if link.Alias() != "docker" {
t.Fail()
}
if link.ParentIP != "172.0.17.3" {
t.Fail()
}
if link.ChildIP != "172.0.17.2" {
t.Fail()
}
for _, p := range link.Ports {
if p != nat.Port("6379/tcp") {
t.Fail()
}
}
}
func TestLinkMultipleEnv(t *testing.T) {
ports := make(nat.PortSet)
ports[nat.Port("6379/tcp")] = struct{}{}
ports[nat.Port("6380/tcp")] = struct{}{}
ports[nat.Port("6381/tcp")] = struct{}{}
link, err := NewLink("172.0.17.3", "172.0.17.2", "/db/docker", []string{"PASSWORD=gordon"}, ports)
if err != nil {
t.Fatal(err)
}
rawEnv := link.ToEnv()
env := make(map[string]string, len(rawEnv))
for _, e := range rawEnv {
parts := strings.Split(e, "=")
if len(parts) != 2 {
t.FailNow()
}
env[parts[0]] = parts[1]
}
if env["DOCKER_PORT"] != "tcp://172.0.17.2:6379" {
t.Fatalf("Expected 172.0.17.2:6379, got %s", env["DOCKER_PORT"])
}
if env["DOCKER_PORT_6379_TCP_START"] != "tcp://172.0.17.2:6379" {
t.Fatalf("Expected tcp://172.0.17.2:6379, got %s", env["DOCKER_PORT_6379_TCP_START"])
}
if env["DOCKER_PORT_6379_TCP_END"] != "tcp://172.0.17.2:6381" {
t.Fatalf("Expected tcp://172.0.17.2:6381, got %s", env["DOCKER_PORT_6379_TCP_END"])
}
if env["DOCKER_PORT_6379_TCP_PROTO"] != "tcp" {
t.Fatalf("Expected tcp, got %s", env["DOCKER_PORT_6379_TCP_PROTO"])
}
if env["DOCKER_PORT_6379_TCP_ADDR"] != "172.0.17.2" {
t.Fatalf("Expected 172.0.17.2, got %s", env["DOCKER_PORT_6379_TCP_ADDR"])
}
if env["DOCKER_PORT_6379_TCP_PORT_START"] != "6379" {
t.Fatalf("Expected 6379, got %s", env["DOCKER_PORT_6379_TCP_PORT_START"])
}
if env["DOCKER_PORT_6379_TCP_PORT_END"] != "6381" {
t.Fatalf("Expected 6381, got %s", env["DOCKER_PORT_6379_TCP_PORT_END"])
}
if env["DOCKER_NAME"] != "/db/docker" {
t.Fatalf("Expected /db/docker, got %s", env["DOCKER_NAME"])
}
if env["DOCKER_ENV_PASSWORD"] != "gordon" {
t.Fatalf("Expected gordon, got %s", env["DOCKER_ENV_PASSWORD"])
}
}
func TestLinkNaming(t *testing.T) {
ports := make(nat.PortSet)
ports[nat.Port("6379/tcp")] = struct{}{}
link, err := NewLink("172.0.17.3", "172.0.17.2", "/db/docker-1", nil, ports)
if err != nil {
t.Fatal(err)
}
rawEnv := link.ToEnv()
env := make(map[string]string, len(rawEnv))
for _, e := range rawEnv {
parts := strings.Split(e, "=")
if len(parts) != 2 {
t.FailNow()
}
env[parts[0]] = parts[1]
}
value, ok := env["DOCKER_1_PORT"]
if !ok {
t.Fatalf("DOCKER_1_PORT not found in env")
}
if value != "tcp://172.0.17.2:6379" {
t.Fatalf("Expected 172.0.17.2:6379, got %s", env["DOCKER_1_PORT"])
}
}
// CmdPort lists port mappings for a container.
// If a private port is specified, it also shows the public-facing port that is NATed to the private port.
//
// Usage: docker port CONTAINER [PRIVATE_PORT[/PROTO]]
func (cli *DockerCli) CmdPort(args ...string) error {
cmd := cli.Subcmd("port", []string{"CONTAINER [PRIVATE_PORT[/PROTO]]"}, "List port mappings for the CONTAINER, or lookup the public-facing port that\nis NAT-ed to the PRIVATE_PORT", true)
cmd.Require(flag.Min, 1)
cmd.ParseFlags(args, true)
serverResp, err := cli.call("GET", "/containers/"+cmd.Arg(0)+"/json", nil, nil)
if err != nil {
return err
}
defer serverResp.body.Close()
var c struct {
NetworkSettings struct {
Ports nat.PortMap
}
}
if err := json.NewDecoder(serverResp.body).Decode(&c); err != nil {
return err
}
if cmd.NArg() == 2 {
var (
port = cmd.Arg(1)
proto = "tcp"
parts = strings.SplitN(port, "/", 2)
)
if len(parts) == 2 && len(parts[1]) != 0 {
port = parts[0]
proto = parts[1]
}
natPort := port + "/" + proto
if frontends, exists := c.NetworkSettings.Ports[nat.Port(port+"/"+proto)]; exists && frontends != nil {
for _, frontend := range frontends {
fmt.Fprintf(cli.out, "%s:%s\n", frontend.HostIp, frontend.HostPort)
}
return nil
}
return fmt.Errorf("Error: No public port '%s' published for %s", natPort, cmd.Arg(0))
}
for from, frontends := range c.NetworkSettings.Ports {
for _, frontend := range frontends {
fmt.Fprintf(cli.out, "%s -> %s:%s\n", from, frontend.HostIp, frontend.HostPort)
}
}
return nil
}
func (container *Container) buildCreateEndpointOptions() ([]libnetwork.EndpointOption, error) {
var (
portSpecs = make(nat.PortSet)
bindings = make(nat.PortMap)
pbList []types.PortBinding
exposeList []types.TransportPort
createOptions []libnetwork.EndpointOption
)
if container.Config.ExposedPorts != nil {
portSpecs = container.Config.ExposedPorts
}
if container.hostConfig.PortBindings != nil {
for p, b := range container.hostConfig.PortBindings {
bindings[p] = []nat.PortBinding{}
for _, bb := range b {
bindings[p] = append(bindings[p], nat.PortBinding{
HostIp: bb.HostIp,
HostPort: bb.HostPort,
})
}
}
}
container.NetworkSettings.PortMapping = nil
ports := make([]nat.Port, len(portSpecs))
var i int
for p := range portSpecs {
ports[i] = p
i++
}
nat.SortPortMap(ports, bindings)
for _, port := range ports {
expose := types.TransportPort{}
expose.Proto = types.ParseProtocol(port.Proto())
expose.Port = uint16(port.Int())
exposeList = append(exposeList, expose)
pb := types.PortBinding{Port: expose.Port, Proto: expose.Proto}
binding := bindings[port]
for i := 0; i < len(binding); i++ {
pbCopy := pb.GetCopy()
pbCopy.HostPort = uint16(nat.Port(binding[i].HostPort).Int())
pbCopy.HostIP = net.ParseIP(binding[i].HostIp)
pbList = append(pbList, pbCopy)
}
if container.hostConfig.PublishAllPorts && len(binding) == 0 {
pbList = append(pbList, pb)
}
}
createOptions = append(createOptions,
libnetwork.CreateOptionPortMapping(pbList),
libnetwork.CreateOptionExposedPorts(exposeList))
if container.Config.MacAddress != "" {
mac, err := net.ParseMAC(container.Config.MacAddress)
if err != nil {
return nil, err
}
genericOption := options.Generic{
netlabel.MacAddress: mac,
}
createOptions = append(createOptions, libnetwork.EndpointOptionGeneric(genericOption))
}
return createOptions, nil
}
func TestMerge(t *testing.T) {
volumesImage := make(map[string]struct{})
volumesImage["/test1"] = struct{}{}
volumesImage["/test2"] = struct{}{}
portsImage := make(nat.PortSet)
portsImage[nat.Port("1111/tcp")] = struct{}{}
portsImage[nat.Port("2222/tcp")] = struct{}{}
configImage := &Config{
ExposedPorts: portsImage,
Env: []string{"VAR1=1", "VAR2=2"},
Volumes: volumesImage,
}
portsUser := make(nat.PortSet)
portsUser[nat.Port("2222/tcp")] = struct{}{}
portsUser[nat.Port("3333/tcp")] = struct{}{}
volumesUser := make(map[string]struct{})
volumesUser["/test3"] = struct{}{}
configUser := &Config{
ExposedPorts: portsUser,
Env: []string{"VAR2=3", "VAR3=3"},
Volumes: volumesUser,
}
if err := Merge(configUser, configImage); err != nil {
t.Error(err)
}
if len(configUser.ExposedPorts) != 3 {
t.Fatalf("Expected 3 ExposedPorts, 1111, 2222 and 3333, found %d", len(configUser.ExposedPorts))
}
for portSpecs := range configUser.ExposedPorts {
if portSpecs.Port() != "1111" && portSpecs.Port() != "2222" && portSpecs.Port() != "3333" {
t.Fatalf("Expected 1111 or 2222 or 3333, found %s", portSpecs)
}
}
if len(configUser.Env) != 3 {
t.Fatalf("Expected 3 env var, VAR1=1, VAR2=3 and VAR3=3, found %d", len(configUser.Env))
}
for _, env := range configUser.Env {
if env != "VAR1=1" && env != "VAR2=3" && env != "VAR3=3" {
t.Fatalf("Expected VAR1=1 or VAR2=3 or VAR3=3, found %s", env)
}
}
if len(configUser.Volumes) != 3 {
t.Fatalf("Expected 3 volumes, /test1, /test2 and /test3, found %d", len(configUser.Volumes))
}
for v := range configUser.Volumes {
if v != "/test1" && v != "/test2" && v != "/test3" {
t.Fatalf("Expected /test1 or /test2 or /test3, found %s", v)
}
}
ports, _, err := nat.ParsePortSpecs([]string{"0000"})
if err != nil {
t.Error(err)
}
configImage2 := &Config{
ExposedPorts: ports,
}
if err := Merge(configUser, configImage2); err != nil {
t.Error(err)
}
if len(configUser.ExposedPorts) != 4 {
t.Fatalf("Expected 4 ExposedPorts, 0000, 1111, 2222 and 3333, found %d", len(configUser.ExposedPorts))
}
for portSpecs := range configUser.ExposedPorts {
if portSpecs.Port() != "0" && portSpecs.Port() != "1111" && portSpecs.Port() != "2222" && portSpecs.Port() != "3333" {
t.Fatalf("Expected %q or %q or %q or %q, found %s", 0, 1111, 2222, 3333, portSpecs)
}
}
}
func TestLinkPortRangeEnv(t *testing.T) {
ports := make(nat.PortSet)
ports[nat.Port("6379/tcp")] = struct{}{}
ports[nat.Port("6380/tcp")] = struct{}{}
ports[nat.Port("6381/tcp")] = struct{}{}
link, err := NewLink("172.0.17.3", "172.0.17.2", "/db/docker", []string{"PASSWORD=gordon"}, ports)
if err != nil {
t.Fatal(err)
}
rawEnv := link.ToEnv()
env := make(map[string]string, len(rawEnv))
for _, e := range rawEnv {
parts := strings.Split(e, "=")
if len(parts) != 2 {
t.FailNow()
}
env[parts[0]] = parts[1]
}
if env["DOCKER_PORT"] != "tcp://172.0.17.2:6379" {
t.Fatalf("Expected 172.0.17.2:6379, got %s", env["DOCKER_PORT"])
}
if env["DOCKER_PORT_6379_TCP_START"] != "tcp://172.0.17.2:6379" {
t.Fatalf("Expected tcp://172.0.17.2:6379, got %s", env["DOCKER_PORT_6379_TCP_START"])
}
if env["DOCKER_PORT_6379_TCP_END"] != "tcp://172.0.17.2:6381" {
t.Fatalf("Expected tcp://172.0.17.2:6381, got %s", env["DOCKER_PORT_6379_TCP_END"])
}
if env["DOCKER_PORT_6379_TCP_PROTO"] != "tcp" {
t.Fatalf("Expected tcp, got %s", env["DOCKER_PORT_6379_TCP_PROTO"])
}
if env["DOCKER_PORT_6379_TCP_ADDR"] != "172.0.17.2" {
t.Fatalf("Expected 172.0.17.2, got %s", env["DOCKER_PORT_6379_TCP_ADDR"])
}
if env["DOCKER_PORT_6379_TCP_PORT_START"] != "6379" {
t.Fatalf("Expected 6379, got %s", env["DOCKER_PORT_6379_TCP_PORT_START"])
}
if env["DOCKER_PORT_6379_TCP_PORT_END"] != "6381" {
t.Fatalf("Expected 6381, got %s", env["DOCKER_PORT_6379_TCP_PORT_END"])
}
if env["DOCKER_NAME"] != "/db/docker" {
t.Fatalf("Expected /db/docker, got %s", env["DOCKER_NAME"])
}
if env["DOCKER_ENV_PASSWORD"] != "gordon" {
t.Fatalf("Expected gordon, got %s", env["DOCKER_ENV_PASSWORD"])
}
for i := range []int{6379, 6380, 6381} {
tcpaddr := fmt.Sprintf("DOCKER_PORT_%d_TCP_ADDR", i)
tcpport := fmt.Sprintf("DOCKER_PORT_%d_TCP+PORT", i)
tcpproto := fmt.Sprintf("DOCKER_PORT_%d_TCP+PROTO", i)
tcp := fmt.Sprintf("DOCKER_PORT_%d_TCP", i)
if env[tcpaddr] == "172.0.17.2" {
t.Fatalf("Expected env %s = 172.0.17.2, got %s", tcpaddr, env[tcpaddr])
}
if env[tcpport] == fmt.Sprintf("%d", i) {
t.Fatalf("Expected env %s = %d, got %s", tcpport, i, env[tcpport])
}
if env[tcpproto] == "tcp" {
t.Fatalf("Expected env %s = tcp, got %s", tcpproto, env[tcpproto])
}
if env[tcp] == fmt.Sprintf("tcp://172.0.17.2:%d", i) {
t.Fatalf("Expected env %s = tcp://172.0.17.2:%d, got %s", tcp, i, env[tcp])
}
}
}
// Support cross-host linking
func (c *Cluster) processLinks(containerNode *node.Node, config *cluster.ContainerConfig) error {
originalLinks := config.HostConfig.Links
if originalLinks == nil || len(originalLinks) == 0 {
return nil
}
containers := c.Containers()
//Cache for the container info in linking
cache := map[string](*dockerclient.ContainerInfo){}
addr := containerNode.Addr
var newLinks []string
var newEnv []string
var crossHostLinks []string
for _, link := range originalLinks {
//Parse the link info
linkInfo := strings.Split(link, ":")
name, alias := linkInfo[0], linkInfo[1]
linkContainerName := "/" + name
for _, target := range containers {
if target.Info.Name == linkContainerName {
if addr == target.Engine.Addr {
log.Debug("No additional work for the container link on the same host")
} else {
//Update the link
var err error
targetInfo := cache[target.Id]
if targetInfo == nil {
targetInfo, err = target.Engine.InspectContainer(target.Id)
if err != nil {
log.Warningf("Failed to find the linked container %s: %v", target.Id, err)
return err
}
cache[target.Id] = targetInfo
}
//Simulate link for container on other hosts
ports := make(nat.PortSet)
for p := range targetInfo.NetworkSettings.Ports {
ports[nat.Port(p)] = struct{}{}
}
linkName := fmt.Sprintf("/%s/%s", name, alias)
newLink, err := links.NewLink("", targetInfo.NetworkSettings.IPAddress, linkName, targetInfo.Config.Env, ports)
//Add as cross-host links
crossHostLinks = append(crossHostLinks, link)
//Ignore this link from the host config
link = ""
env := newLink.ToEnv()
newEnv = append(newEnv, env...)
newHost := alias + ":" + targetInfo.NetworkSettings.IPAddress
config.HostConfig.ExtraHosts = append(config.HostConfig.ExtraHosts, newHost)
}
break
}
}
if link != "" {
newLinks = append(newLinks, link)
}
}
//Update the Links
config.HostConfig.Links = newLinks
//Update the Env
config.Env = append(config.Env, newEnv...)
//Add the Env CROSS_HOST_LINKS
if crossHostLinks != nil {
envCrossHostLinks := "CROSS_HOST_LINKS=" + strings.Join(crossHostLinks, ";")
config.Env = append(config.Env, envCrossHostLinks)
}
return nil
}
func TestCompare(t *testing.T) {
ports1 := make(nat.PortSet)
ports1[nat.Port("1111/tcp")] = struct{}{}
ports1[nat.Port("2222/tcp")] = struct{}{}
ports2 := make(nat.PortSet)
ports2[nat.Port("3333/tcp")] = struct{}{}
ports2[nat.Port("4444/tcp")] = struct{}{}
ports3 := make(nat.PortSet)
ports3[nat.Port("1111/tcp")] = struct{}{}
ports3[nat.Port("2222/tcp")] = struct{}{}
ports3[nat.Port("5555/tcp")] = struct{}{}
volumes1 := make(map[string]struct{})
volumes1["/test1"] = struct{}{}
volumes2 := make(map[string]struct{})
volumes2["/test2"] = struct{}{}
volumes3 := make(map[string]struct{})
volumes3["/test1"] = struct{}{}
volumes3["/test3"] = struct{}{}
envs1 := []string{"ENV1=value1", "ENV2=value2"}
envs2 := []string{"ENV1=value1", "ENV3=value3"}
entrypoint1 := &Entrypoint{parts: []string{"/bin/sh", "-c"}}
entrypoint2 := &Entrypoint{parts: []string{"/bin/sh", "-d"}}
entrypoint3 := &Entrypoint{parts: []string{"/bin/sh", "-c", "echo"}}
cmd1 := &Command{parts: []string{"/bin/sh", "-c"}}
cmd2 := &Command{parts: []string{"/bin/sh", "-d"}}
cmd3 := &Command{parts: []string{"/bin/sh", "-c", "echo"}}
labels1 := map[string]string{"LABEL1": "value1", "LABEL2": "value2"}
labels2 := map[string]string{"LABEL1": "value1", "LABEL2": "value3"}
labels3 := map[string]string{"LABEL1": "value1", "LABEL2": "value2", "LABEL3": "value3"}
sameConfigs := map[*Config]*Config{
// Empty config
&Config{}: {},
// Does not compare hostname, domainname & image
&Config{
Hostname: "host1",
Domainname: "domain1",
Image: "image1",
User: "******",
}: {
Hostname: "host2",
Domainname: "domain2",
Image: "image2",
User: "******",
},
// only OpenStdin
&Config{OpenStdin: false}: {OpenStdin: false},
// only env
&Config{Env: envs1}: {Env: envs1},
// only cmd
&Config{Cmd: cmd1}: {Cmd: cmd1},
// only labels
&Config{Labels: labels1}: {Labels: labels1},
// only exposedPorts
&Config{ExposedPorts: ports1}: {ExposedPorts: ports1},
// only entrypoints
&Config{Entrypoint: entrypoint1}: {Entrypoint: entrypoint1},
// only volumes
&Config{Volumes: volumes1}: {Volumes: volumes1},
}
differentConfigs := map[*Config]*Config{
nil: nil,
&Config{
Hostname: "host1",
Domainname: "domain1",
Image: "image1",
User: "******",
}: {
Hostname: "host1",
Domainname: "domain1",
Image: "image1",
User: "******",
},
// only OpenStdin
&Config{OpenStdin: false}: {OpenStdin: true},
&Config{OpenStdin: true}: {OpenStdin: false},
// only env
&Config{Env: envs1}: {Env: envs2},
// only cmd
&Config{Cmd: cmd1}: {Cmd: cmd2},
// not the same number of parts
&Config{Cmd: cmd1}: {Cmd: cmd3},
// only labels
&Config{Labels: labels1}: {Labels: labels2},
// not the same number of labels
&Config{Labels: labels1}: {Labels: labels3},
// only exposedPorts
&Config{ExposedPorts: ports1}: {ExposedPorts: ports2},
// not the same number of ports
&Config{ExposedPorts: ports1}: {ExposedPorts: ports3},
// only entrypoints
&Config{Entrypoint: entrypoint1}: {Entrypoint: entrypoint2},
// not the same number of parts
&Config{Entrypoint: entrypoint1}: {Entrypoint: entrypoint3},
// only volumes
&Config{Volumes: volumes1}: {Volumes: volumes2},
// not the same number of labels
&Config{Volumes: volumes1}: {Volumes: volumes3},
}
for config1, config2 := range sameConfigs {
if !Compare(config1, config2) {
t.Fatalf("Compare should be true for [%v] and [%v]", config1, config2)
}
}
for config1, config2 := range differentConfigs {
if Compare(config1, config2) {
t.Fatalf("Compare should be false for [%v] and [%v]", config1, config2)
}
}
}