mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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03d11bcf4e
Add a new docker integration with kubelet using the new runtime API. This change adds the package with some skeletons, and implements some of the basic operations.
79 lines
2.3 KiB
Go
79 lines
2.3 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package dockershim
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import (
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"fmt"
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dockerapiversion "github.com/docker/engine-api/types/versions"
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runtimeApi "k8s.io/kubernetes/pkg/kubelet/api/v1alpha1/runtime"
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)
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// apiVersion implements kubecontainer.Version interface by implementing
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// Compare() and String(). It uses the compare function of engine-api to
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// compare docker apiversions.
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type apiVersion string
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func (v apiVersion) String() string {
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return string(v)
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}
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func (v apiVersion) Compare(other string) (int, error) {
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if dockerapiversion.LessThan(string(v), other) {
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return -1, nil
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} else if dockerapiversion.GreaterThan(string(v), other) {
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return 1, nil
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}
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return 0, nil
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}
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// generateEnvList converts KeyValue list to a list of strings, in the form of
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// '<key>=<value>', which can be understood by docker.
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func generateEnvList(envs []*runtimeApi.KeyValue) (result []string) {
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for _, env := range envs {
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result = append(result, fmt.Sprintf("%s=%s", env.GetKey(), env.GetValue()))
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}
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return
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}
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// generateMountBindings converts the mount list to a list of strings that
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// can be understood by docker.
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// Each element in the string is in the form of:
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// '<HostPath>:<ContainerPath>', or
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// '<HostPath>:<ContainerPath>:ro', if the path is read only, or
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// '<HostPath>:<ContainerPath>:Z', if the volume requires SELinux
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// relabeling and the pod provides an SELinux label
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func generateMountBindings(mounts []*runtimeApi.Mount) (result []string) {
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// TODO: resolve podHasSELinuxLabel
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for _, m := range mounts {
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bind := fmt.Sprintf("%s:%s", m.GetHostPath(), m.GetContainerPath())
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readOnly := m.GetReadonly()
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if readOnly {
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bind += ":ro"
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}
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if m.GetSelinuxRelabel() {
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if readOnly {
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bind += ",Z"
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} else {
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bind += ":Z"
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}
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}
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result = append(result, bind)
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}
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return
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}
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