diff options
Diffstat (limited to 'pkg/spec/ports.go')
-rw-r--r-- | pkg/spec/ports.go | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/pkg/spec/ports.go b/pkg/spec/ports.go deleted file mode 100644 index bdd26bd83..000000000 --- a/pkg/spec/ports.go +++ /dev/null @@ -1,107 +0,0 @@ -package createconfig - -import ( - "fmt" - "net" - "strconv" - - "github.com/docker/go-connections/nat" - "github.com/pkg/errors" - "github.com/sirupsen/logrus" -) - -// ExposedPorts parses user and image ports and returns binding information -func ExposedPorts(expose, publish []string, publishAll bool, imageExposedPorts map[string]struct{}) (map[nat.Port][]nat.PortBinding, error) { - containerPorts := make(map[string]string) - - // add expose ports from the image itself - for expose := range imageExposedPorts { - _, port := nat.SplitProtoPort(expose) - containerPorts[port] = "" - } - - // add the expose ports from the user (--expose) - // can be single or a range - for _, expose := range expose { - //support two formats for expose, original format <portnum>/[<proto>] or <startport-endport>/[<proto>] - _, port := nat.SplitProtoPort(expose) - //parse the start and end port and create a sequence of ports to expose - //if expose a port, the start and end port are the same - start, end, err := nat.ParsePortRange(port) - if err != nil { - return nil, fmt.Errorf("invalid range format for --expose: %s, error: %s", expose, err) - } - for i := start; i <= end; i++ { - containerPorts[strconv.Itoa(int(i))] = "" - } - } - - // parse user inputted port bindings - pbPorts, portBindings, err := nat.ParsePortSpecs(publish) - if err != nil { - return nil, err - } - - // delete exposed container ports if being used by -p - for i := range pbPorts { - delete(containerPorts, i.Port()) - } - - // iterate container ports and make port bindings from them - if publishAll { - for e := range containerPorts { - //support two formats for expose, original format <portnum>/[<proto>] or <startport-endport>/[<proto>] - //proto, port := nat.SplitProtoPort(e) - p, err := nat.NewPort("tcp", e) - if err != nil { - return nil, err - } - rp, err := getRandomPort() - if err != nil { - return nil, err - } - logrus.Debug(fmt.Sprintf("Using random host port %d with container port %d", rp, p.Int())) - portBindings[p] = CreatePortBinding(rp, "") - } - } - - // We need to see if any host ports are not populated and if so, we need to assign a - // random port to them. - for k, pb := range portBindings { - if pb[0].HostPort == "" { - hostPort, err := getRandomPort() - if err != nil { - return nil, err - } - logrus.Debug(fmt.Sprintf("Using random host port %d with container port %s", hostPort, k.Port())) - pb[0].HostPort = strconv.Itoa(hostPort) - } - } - return portBindings, nil -} - -func getRandomPort() (int, error) { - l, err := net.Listen("tcp", ":0") - if err != nil { - return 0, errors.Wrapf(err, "unable to get free port") - } - defer l.Close() - _, randomPort, err := net.SplitHostPort(l.Addr().String()) - if err != nil { - return 0, errors.Wrapf(err, "unable to determine free port") - } - rp, err := strconv.Atoi(randomPort) - if err != nil { - return 0, errors.Wrapf(err, "unable to convert random port to int") - } - return rp, nil -} - -//CreatePortBinding takes port (int) and IP (string) and creates an array of portbinding structs -func CreatePortBinding(hostPort int, hostIP string) []nat.PortBinding { - pb := nat.PortBinding{ - HostPort: strconv.Itoa(hostPort), - } - pb.HostIP = hostIP - return []nat.PortBinding{pb} -} |