Add support for host:port:port

This adds support for supplying for example:
"127.0.0.1:80:80/tcp" to docker-compose.yaml and converting it to it's
corresponding Kubernetes / OpenShift hostIP.

This commit also refactors the loadPorts function of compose.go

Closes #335

pkg/kobject/kobject.go

@@ -91,5 +91,6 @@ type EnvVar struct {
 type Ports struct {
 	HostPort      int32
 	ContainerPort int32
+	HostIP        string
 	Protocol      api.Protocol
 }

pkg/loader/compose/compose.go

@@ -5,7 +5,7 @@ Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at
 
-    http://www.apache.org/licenses/LICENSE-2.0
+http://www.apache.org/licenses/LICENSE-2.0
 
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
@@ -18,6 +18,7 @@ package compose
 
 import (
 	"fmt"
+	"net"
 	"os"
 	"path/filepath"
 	"reflect"
@@ -180,41 +181,86 @@ func loadEnvVars(envars []string) []kobject.EnvVar {
 func loadPorts(composePorts []string) ([]kobject.Ports, error) {
 	ports := []kobject.Ports{}
 	character := ":"
+
+	// For each port listed
 	for _, port := range composePorts {
+
+		// Get the TCP / UDP protocol. Checks to see if it splits in 2 with '/' character.
+		// ex. 15000:15000/tcp
+		// else, set a default protocol of using TCP
 		proto := api.ProtocolTCP
-		// get protocol
-		p := strings.Split(port, "/")
-		if len(p) == 2 {
-			if strings.EqualFold("tcp", p[1]) {
+		protocolCheck := strings.Split(port, "/")
+		if len(protocolCheck) == 2 {
+			if strings.EqualFold("tcp", protocolCheck[1]) {
 				proto = api.ProtocolTCP
-			} else if strings.EqualFold("udp", p[1]) {
+			} else if strings.EqualFold("udp", protocolCheck[1]) {
 				proto = api.ProtocolUDP
+			} else {
+				return nil, fmt.Errorf("invalid protocol %q", protocolCheck[1])
 			}
 		}
-		// port mappings without protocol part
-		portNoProto := p[0]
-		if strings.Contains(portNoProto, character) {
-			hostPort := portNoProto[0:strings.Index(portNoProto, character)]
-			hostPort = strings.TrimSpace(hostPort)
-			hostPortInt, err := strconv.Atoi(hostPort)
+
+		// Split up the ports / IP without the "/tcp" or "/udp" appended to it
+		justPorts := strings.Split(protocolCheck[0], character)
+
+		if len(justPorts) == 3 {
+			// ex. 127.0.0.1:80:80
+
+			// Get the IP address
+			hostIP := justPorts[0]
+			ip := net.ParseIP(hostIP)
+			if ip.To4() == nil && ip.To16() == nil {
+				return nil, fmt.Errorf("%q contains an invalid IPv4 or IPv6 IP address", port)
+			}
+
+			// Get the host port
+			hostPortInt, err := strconv.Atoi(justPorts[1])
 			if err != nil {
-				return nil, fmt.Errorf("invalid host port %q", port)
+				return nil, fmt.Errorf("invalid host port %q valid example: 127.0.0.1:80:80", port)
 			}
-			containerPort := portNoProto[strings.Index(portNoProto, character)+1:]
-			containerPort = strings.TrimSpace(containerPort)
-			containerPortInt, err := strconv.Atoi(containerPort)
+
+			// Get the container port
+			containerPortInt, err := strconv.Atoi(justPorts[2])
 			if err != nil {
-				return nil, fmt.Errorf("invalid container port %q", port)
+				return nil, fmt.Errorf("invalid container port %q valid example: 127.0.0.1:80:80", port)
 			}
+
+			// Convert to a kobject struct with ports as well as IP
 			ports = append(ports, kobject.Ports{
 				HostPort:      int32(hostPortInt),
 				ContainerPort: int32(containerPortInt),
+				HostIP:        hostIP,
 				Protocol:      proto,
 			})
+
+		} else if len(justPorts) == 2 {
+			// ex. 80:80
+
+			// Get the host port
+			hostPortInt, err := strconv.Atoi(justPorts[0])
+			if err != nil {
+				return nil, fmt.Errorf("invalid host port %q valid example: 80:80", port)
+			}
+
+			// Get the container port
+			containerPortInt, err := strconv.Atoi(justPorts[1])
+			if err != nil {
+				return nil, fmt.Errorf("invalid container port %q valid example: 80:80", port)
+			}
+
+			// Convert to a kobject struct and add to the list of ports
+			ports = append(ports, kobject.Ports{
+				HostPort:      int32(hostPortInt),
+				ContainerPort: int32(containerPortInt),
+				Protocol:      proto,
+			})
+
 		} else {
-			containerPortInt, err := strconv.Atoi(portNoProto)
+			// ex. 80
+
+			containerPortInt, err := strconv.Atoi(justPorts[0])
 			if err != nil {
-				return nil, fmt.Errorf("invalid container port %q", port)
+				return nil, fmt.Errorf("invalid container port %q valid example: 80", port)
 			}
 			ports = append(ports, kobject.Ports{
 				ContainerPort: int32(containerPortInt),

pkg/transformer/kubernetes/kubernetes.go

@@ -285,13 +285,16 @@ func (k *Kubernetes) ConfigPorts(name string, service kobject.ServiceConfig) []a
 		if port.Protocol == api.ProtocolTCP {
 			ports = append(ports, api.ContainerPort{
 				ContainerPort: port.ContainerPort,
+				HostIP:        port.HostIP,
 			})
 		} else {
 			ports = append(ports, api.ContainerPort{
 				ContainerPort: port.ContainerPort,
 				Protocol:      port.Protocol,
+				HostIP:        port.HostIP,
 			})
 		}
+
 	}
 
 	return ports
@@ -304,6 +307,7 @@ func (k *Kubernetes) ConfigServicePorts(name string, service kobject.ServiceConf
 		if port.HostPort == 0 {
 			port.HostPort = port.ContainerPort
 		}
+
 		var targetPort intstr.IntOrString
 		targetPort.IntVal = port.ContainerPort
 		targetPort.StrVal = strconv.Itoa(int(port.ContainerPort))

script/test/cmd/tests.sh

@@ -123,6 +123,11 @@ export $(cat $KOMPOSE_ROOT/script/test/fixtures/keyonly-envs/envs)
 convert::expect_success "kompose --file $KOMPOSE_ROOT/script/test/fixtures/keyonly-envs/env.yml convert --stdout -j" "$KOMPOSE_ROOT/script/test/fixtures/keyonly-envs/output-k8s.json"
 unset $(cat $KOMPOSE_ROOT/script/test/fixtures/keyonly-envs/envs | cut -d'=' -f1)
 
+#####
+# Test related to host:port:container in docker-compose
+# kubernetes test
+convert::expect_success "kompose -f $KOMPOSE_ROOT/script/test/fixtures/ports-with-ip/docker-compose.yml convert --stdout -j" "$KOMPOSE_ROOT/script/test/fixtures/ports-with-ip/output-k8s.json"
+
 
 ######
 # Test related to "stdin_open: true" in docker-compose

script/test/fixtures/ports-with-ip/docker-compose.yml

@@ -0,0 +1,19 @@
+version: "2"
+
+services:
+    web:
+      image: tuna/docker-counter23
+      ports:
+        - "127.0.0.1:5000:5000/tcp"
+      links:
+        - redis
+      networks:
+        - default
+
+    redis:
+      image: redis:3.0
+      networks: 
+        - default
+      ports:
+        - "6379/tcp"
+        - "1234:1235/udp"

script/test/fixtures/ports-with-ip/output-k8s.json

@@ -0,0 +1,146 @@
+{
+  "kind": "List",
+  "apiVersion": "v1",
+  "metadata": {},
+  "items": [
+    {
+      "kind": "Service",
+      "apiVersion": "v1",
+      "metadata": {
+        "name": "redis",
+        "creationTimestamp": null,
+        "labels": {
+          "service": "redis"
+        }
+      },
+      "spec": {
+        "ports": [
+          {
+            "name": "6379",
+            "protocol": "TCP",
+            "port": 6379,
+            "targetPort": 6379
+          },
+          {
+            "name": "1234",
+            "protocol": "UDP",
+            "port": 1234,
+            "targetPort": 1235
+          }
+        ],
+        "selector": {
+          "service": "redis"
+        }
+      },
+      "status": {
+        "loadBalancer": {}
+      }
+    },
+    {
+      "kind": "Service",
+      "apiVersion": "v1",
+      "metadata": {
+        "name": "web",
+        "creationTimestamp": null,
+        "labels": {
+          "service": "web"
+        }
+      },
+      "spec": {
+        "ports": [
+          {
+            "name": "5000",
+            "protocol": "TCP",
+            "port": 5000,
+            "targetPort": 5000
+          }
+        ],
+        "selector": {
+          "service": "web"
+        }
+      },
+      "status": {
+        "loadBalancer": {}
+      }
+    },
+    {
+      "kind": "Deployment",
+      "apiVersion": "extensions/v1beta1",
+      "metadata": {
+        "name": "redis",
+        "creationTimestamp": null
+      },
+      "spec": {
+        "replicas": 1,
+        "template": {
+          "metadata": {
+            "creationTimestamp": null,
+            "labels": {
+              "service": "redis"
+            }
+          },
+          "spec": {
+            "containers": [
+              {
+                "name": "redis",
+                "image": "redis:3.0",
+                "ports": [
+                  {
+                    "containerPort": 6379,
+                    "protocol": "TCP"
+                  },
+                  {
+                    "containerPort": 1235,
+                    "protocol": "UDP"
+                  }
+                ],
+                "resources": {}
+              }
+            ],
+            "restartPolicy": "Always"
+          }
+        },
+        "strategy": {}
+      },
+      "status": {}
+    },
+    {
+      "kind": "Deployment",
+      "apiVersion": "extensions/v1beta1",
+      "metadata": {
+        "name": "web",
+        "creationTimestamp": null
+      },
+      "spec": {
+        "replicas": 1,
+        "template": {
+          "metadata": {
+            "creationTimestamp": null,
+            "labels": {
+              "service": "web"
+            }
+          },
+          "spec": {
+            "containers": [
+              {
+                "name": "web",
+                "image": "tuna/docker-counter23",
+                "ports": [
+                  {
+                    "containerPort": 5000,
+                    "protocol": "TCP",
+                    "hostIP": "127.0.0.1"
+                  }
+                ],
+                "resources": {}
+              }
+            ],
+            "restartPolicy": "Always"
+          }
+        },
+        "strategy": {}
+      },
+      "status": {}
+    }
+  ]
+}