Initial commit

vendor/github.com/hyperhq/libcompose/project/utils.go

@@ -0,0 +1,70 @@
+package project
+
+import (
+	"strings"
+
+	"github.com/docker/engine-api/types/container"
+)
+
+// DefaultDependentServices return the dependent services (as an array of ServiceRelationship)
+// for the specified project and service. It looks for : links, volumesFrom, net and ipc configuration.
+func DefaultDependentServices(p *Project, s Service) []ServiceRelationship {
+	config := s.Config()
+	if config == nil {
+		return []ServiceRelationship{}
+	}
+
+	result := []ServiceRelationship{}
+	for _, link := range config.Links {
+		result = append(result, NewServiceRelationship(link, RelTypeLink))
+	}
+
+	/*
+		for _, volumesFrom := range config.VolumesFrom {
+			result = append(result, NewServiceRelationship(volumesFrom, RelTypeVolumesFrom))
+		}
+
+		result = appendNs(p, result, s.Config().NetworkMode, RelTypeNetNamespace)
+		result = appendNs(p, result, s.Config().Ipc, RelTypeIpcNamespace)
+	*/
+
+	return result
+}
+
+func appendNs(p *Project, rels []ServiceRelationship, conf string, relType ServiceRelationshipType) []ServiceRelationship {
+	service := GetContainerFromIpcLikeConfig(p, conf)
+	if service != "" {
+		rels = append(rels, NewServiceRelationship(service, relType))
+	}
+	return rels
+}
+
+// NameAlias returns the name and alias based on the specified string.
+// If the name contains a colon (like name:alias) it will split it, otherwise
+// it will return the specified name as name and alias.
+func NameAlias(name string) (string, string) {
+	parts := strings.SplitN(name, ":", 2)
+	if len(parts) == 2 {
+		return parts[0], parts[1]
+	}
+	return parts[0], parts[0]
+}
+
+// GetContainerFromIpcLikeConfig returns name of the service that shares the IPC
+// namespace with the specified service.
+func GetContainerFromIpcLikeConfig(p *Project, conf string) string {
+	ipc := container.IpcMode(conf)
+	if !ipc.IsContainer() {
+		return ""
+	}
+
+	name := ipc.Container()
+	if name == "" {
+		return ""
+	}
+
+	if p.ServiceConfigs.Has(name) {
+		return name
+	}
+	return ""
+}