Add v3 support

This does a major refactor on the compose.go functions as well as brings in a new era of v3 support to Kompose. Similar to how we utilize libcompose, we utilize docker/cli's "stack deploy" code which has a built-in v3 parser. We convert the parsed structure to our own and then convert it to Kubernetes/OpenShift artifacts.
2017-06-13 09:44:48 -04:00
parent 683ae91823
commit 2b58307191
18 changed files with 2875 additions and 264 deletions
@@ -0,0 +1,102 @@
+/*
+Copyright 2016 The Kubernetes Authors All rights reserved.
+
+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
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package compose
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/kubernetes-incubator/kompose/pkg/kobject"
+	"github.com/pkg/errors"
+	"k8s.io/kubernetes/pkg/api"
+)
+
+// load environment variables from compose file
+func loadEnvVars(envars []string) []kobject.EnvVar {
+	envs := []kobject.EnvVar{}
+	for _, e := range envars {
+		character := ""
+		equalPos := strings.Index(e, "=")
+		colonPos := strings.Index(e, ":")
+		switch {
+		case equalPos == -1 && colonPos == -1:
+			character = ""
+		case equalPos == -1 && colonPos != -1:
+			character = ":"
+		case equalPos != -1 && colonPos == -1:
+			character = "="
+		case equalPos != -1 && colonPos != -1:
+			if equalPos > colonPos {
+				character = ":"
+			} else {
+				character = "="
+			}
+		}
+
+		if character == "" {
+			envs = append(envs, kobject.EnvVar{
+				Name:  e,
+				Value: os.Getenv(e),
+			})
+		} else {
+			values := strings.SplitN(e, character, 2)
+			// try to get value from os env
+			if values[1] == "" {
+				values[1] = os.Getenv(values[0])
+			}
+			envs = append(envs, kobject.EnvVar{
+				Name:  values[0],
+				Value: values[1],
+			})
+		}
+	}
+
+	return envs
+}
+
+// getComposeFileDir returns compose file directory
+// Assume all the docker-compose files are in the same directory
+// TODO: fix (check if file exists)
+func getComposeFileDir(inputFiles []string) (string, error) {
+	inputFile := inputFiles[0]
+	if strings.Index(inputFile, "/") != 0 {
+		workDir, err := os.Getwd()
+		if err != nil {
+			return "", errors.Wrap(err, "Unable to retrieve compose file directory")
+		}
+		inputFile = filepath.Join(workDir, inputFile)
+	}
+	return filepath.Dir(inputFile), nil
+}
+
+func handleServiceType(ServiceType string) (string, error) {
+	switch strings.ToLower(ServiceType) {
+	case "", "clusterip":
+		return string(api.ServiceTypeClusterIP), nil
+	case "nodeport":
+		return string(api.ServiceTypeNodePort), nil
+	case "loadbalancer":
+		return string(api.ServiceTypeLoadBalancer), nil
+	default:
+		return "", errors.New("Unknown value " + ServiceType + " , supported values are 'NodePort, ClusterIP or LoadBalancer'")
+	}
+}
+
+func normalizeServiceNames(svcName string) string {
+	return strings.Replace(svcName, "_", "-", -1)
+}