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authorDaniel J Walsh <dwalsh@redhat.com>2018-01-24 21:24:54 +0100
committerGitHub <noreply@github.com>2018-01-24 21:24:54 +0100
commit97f234190f9641dabecdefb05ffe52103621da90 (patch)
tree86dadf8512e8a34291c2f12c4ea4442070a01e12 /cmd
parent274908fd1349872cd1a661483c100e3a7a837da0 (diff)
parentb74e38b042cb32cead9adacbe75256a89e5cb664 (diff)
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Merge pull request #252 from baude/port
podman port
Diffstat (limited to 'cmd')
-rw-r--r--cmd/podman/main.go1
-rw-r--r--cmd/podman/port.go145
2 files changed, 146 insertions, 0 deletions
diff --git a/cmd/podman/main.go b/cmd/podman/main.go
index 0fd30fa71..bda8ff517 100644
--- a/cmd/podman/main.go
+++ b/cmd/podman/main.go
@@ -57,6 +57,7 @@ func main() {
mountCommand,
pauseCommand,
psCommand,
+ portCommand,
pullCommand,
pushCommand,
rmCommand,
diff --git a/cmd/podman/port.go b/cmd/podman/port.go
new file mode 100644
index 000000000..f105a14ed
--- /dev/null
+++ b/cmd/podman/port.go
@@ -0,0 +1,145 @@
+package main
+
+import (
+ "fmt"
+ "strconv"
+ "strings"
+
+ "github.com/pkg/errors"
+ "github.com/projectatomic/libpod/libpod"
+ "github.com/urfave/cli"
+)
+
+var (
+ portFlags = []cli.Flag{
+ cli.BoolFlag{
+ Name: "all, a",
+ Usage: "display port information for all containers",
+ },
+ LatestFlag,
+ }
+ portDescription = `
+ podman port
+
+ List port mappings for the CONTAINER, or lookup the public-facing port that is NAT-ed to the PRIVATE_PORT
+`
+
+ portCommand = cli.Command{
+ Name: "port",
+ Usage: "List port mappings or a specific mapping for the container",
+ Description: portDescription,
+ Flags: portFlags,
+ Action: portCmd,
+ ArgsUsage: "CONTAINER-NAME [mapping]",
+ }
+)
+
+func portCmd(c *cli.Context) error {
+ var (
+ userProto, containerName string
+ userPort int
+ container *libpod.Container
+ containers []*libpod.Container
+ )
+
+ args := c.Args()
+ if err := validateFlags(c, portFlags); err != nil {
+ return err
+ }
+
+ if c.Bool("latest") && c.Bool("all") {
+ return errors.Errorf("the 'all' and 'latest' options cannot be used together")
+ }
+ if c.Bool("all") && len(args) > 0 {
+ return errors.Errorf("no additional arguments can be used with 'all'")
+ }
+ if len(args) == 0 && !c.Bool("latest") && !c.Bool("all") {
+ return errors.Errorf("you must supply a running container name or id")
+ }
+ if !c.Bool("latest") && !c.Bool("all") {
+ containerName = args[0]
+ }
+
+ port := ""
+ if len(args) > 1 && !c.Bool("latest") {
+ port = args[1]
+ }
+ if len(args) == 1 && c.Bool("latest") {
+ port = args[0]
+ }
+ if port != "" {
+ fields := strings.Split(port, "/")
+ // User supplied at least port
+ var err error
+ // User supplied port and protocol
+ if len(fields) == 2 {
+ userProto = fields[1]
+ }
+ if len(fields) >= 1 {
+ p := fields[0]
+ userPort, err = strconv.Atoi(p)
+ if err != nil {
+ return errors.Wrapf(err, "unable to format port")
+ }
+ }
+ // Format is incorrect
+ if len(fields) > 2 || len(fields) < 1 {
+ return errors.Errorf("port formats are port/protocol. '%s' is invalid", port)
+ }
+ }
+
+ runtime, err := getRuntime(c)
+ if err != nil {
+ return errors.Wrapf(err, "could not get runtime")
+ }
+ defer runtime.Shutdown(false)
+
+ if !c.Bool("latest") && !c.Bool("all") {
+ container, err = runtime.LookupContainer(containerName)
+ if err != nil {
+ return errors.Wrapf(err, "unable to find container %s", containerName)
+ }
+ containers = append(containers, container)
+ } else if c.Bool("latest") {
+ container, err = runtime.GetLatestContainer()
+ containers = append(containers, container)
+ } else {
+ containers, err = runtime.GetRunningContainers()
+ if err != nil {
+ return errors.Wrapf(err, "unable to get all containers")
+ }
+ }
+
+ for _, con := range containers {
+ if state, _ := con.State(); state != libpod.ContainerStateRunning {
+ continue
+ }
+ if c.Bool("all") {
+ fmt.Println(con.ID())
+ }
+ // Iterate mappings
+ for _, v := range con.Config().PortMappings {
+ hostIP := v.HostIP
+ // Set host IP to 0.0.0.0 if blank
+ if hostIP == "" {
+ hostIP = "0.0.0.0"
+ }
+ // If not searching by port or port/proto, then dump what we see
+ if port == "" {
+ fmt.Printf("%d/%s -> %s:%d\n", v.ContainerPort, v.Protocol, hostIP, v.HostPort)
+ continue
+ }
+ // We have a match on ports
+ if v.ContainerPort == int32(userPort) {
+ if userProto == "" || userProto == v.Protocol {
+ fmt.Printf("%s:%d", hostIP, v.HostPort)
+ break
+ }
+ } else {
+ return errors.Errorf("No public port '%d' published for %s", userPort, containerName)
+ }
+ }
+ }
+
+ return nil
+}