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support for volumes_from docker-compose construct

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Now a user can provide volumes_from to share volumes
from other service so here the PVC created for that
service will be shared by service calling volumes_from
This commit is contained in:
Suraj Deshmukh
2016-10-19 09:15:47 +05:30
parent d9899b788d
commit fd09efed43
9 changed files with 622 additions and 2 deletions
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pkg/transformer/kubernetes/k8sutils.go
+50
View File
@@ -333,3 +333,53 @@ func SortServicesFirst(objs *[]runtime.Object) {
ret = append(ret, others...)
*objs = ret
}
func findDependentVolumes(svcname string, komposeObject kobject.KomposeObject) (volumes []api.Volume, volumeMounts []api.VolumeMount) {
// Get all the volumes and volumemounts this particular service is dependent on
for _, dependentSvc := range komposeObject.ServiceConfigs[svcname].VolumesFrom {
vols, volMounts := findDependentVolumes(dependentSvc, komposeObject)
volumes = append(volumes, vols...)
volumeMounts = append(volumeMounts, volMounts...)
}
// add the volumes info of this service
volMounts, vols, _ := ConfigVolumes(svcname, komposeObject.ServiceConfigs[svcname])
volumes = append(volumes, vols...)
volumeMounts = append(volumeMounts, volMounts...)
return
}
func VolumesFrom(objects *[]runtime.Object, komposeObject kobject.KomposeObject) {
for _, obj := range *objects {
switch t := obj.(type) {
case *api.ReplicationController:
svcName := t.ObjectMeta.Name
for _, dependentSvc := range komposeObject.ServiceConfigs[svcName].VolumesFrom {
volumes, volumeMounts := findDependentVolumes(dependentSvc, komposeObject)
t.Spec.Template.Spec.Volumes = append(t.Spec.Template.Spec.Volumes, volumes...)
t.Spec.Template.Spec.Containers[0].VolumeMounts = append(t.Spec.Template.Spec.Containers[0].VolumeMounts, volumeMounts...)
}
case *extensions.Deployment:
svcName := t.ObjectMeta.Name
for _, dependentSvc := range komposeObject.ServiceConfigs[svcName].VolumesFrom {
volumes, volumeMounts := findDependentVolumes(dependentSvc, komposeObject)
t.Spec.Template.Spec.Volumes = append(t.Spec.Template.Spec.Volumes, volumes...)
t.Spec.Template.Spec.Containers[0].VolumeMounts = append(t.Spec.Template.Spec.Containers[0].VolumeMounts, volumeMounts...)
}
case *extensions.DaemonSet:
svcName := t.ObjectMeta.Name
for _, dependentSvc := range komposeObject.ServiceConfigs[svcName].VolumesFrom {
volumes, volumeMounts := findDependentVolumes(dependentSvc, komposeObject)
t.Spec.Template.Spec.Volumes = append(t.Spec.Template.Spec.Volumes, volumes...)
t.Spec.Template.Spec.Containers[0].VolumeMounts = append(t.Spec.Template.Spec.Containers[0].VolumeMounts, volumeMounts...)
}
case *deployapi.DeploymentConfig:
svcName := t.ObjectMeta.Name
for _, dependentSvc := range komposeObject.ServiceConfigs[svcName].VolumesFrom {
volumes, volumeMounts := findDependentVolumes(dependentSvc, komposeObject)
t.Spec.Template.Spec.Volumes = append(t.Spec.Template.Spec.Volumes, volumes...)
t.Spec.Template.Spec.Containers[0].VolumeMounts = append(t.Spec.Template.Spec.Containers[0].VolumeMounts, volumeMounts...)
}
}
}
}
pkg/transformer/kubernetes/kubernetes.go
+2
View File
@@ -307,6 +307,8 @@ func (k *Kubernetes) Transform(komposeObject kobject.KomposeObject, opt kobject.
allobjects = append(allobjects, objects...)
}
// If docker-compose has a volumes_from directive it will be handled here
VolumesFrom(&allobjects, komposeObject)
// sort all object so Services are first
SortServicesFirst(&allobjects)
return allobjects