mirror of https://github.com/k3s-io/k3s
85 lines
3.4 KiB
Go
85 lines
3.4 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors All rights reserved.
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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 app
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import (
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// This file exists to force the desired plugin implementations to be linked.
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// This should probably be part of some configuration fed into the build for a
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// given binary target.
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//Cloud providers
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_ "k8s.io/kubernetes/pkg/cloudprovider/providers"
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// Volume plugins
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"k8s.io/kubernetes/pkg/util/io"
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"k8s.io/kubernetes/pkg/volume"
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"k8s.io/kubernetes/pkg/volume/host_path"
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"k8s.io/kubernetes/pkg/volume/nfs"
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"github.com/golang/glog"
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)
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// ProbeRecyclableVolumePlugins collects all persistent volume plugins into an easy to use list.
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func ProbeRecyclableVolumePlugins(flags VolumeConfigFlags) []volume.VolumePlugin {
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allPlugins := []volume.VolumePlugin{}
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// The list of plugins to probe is decided by this binary, not
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// by dynamic linking or other "magic". Plugins will be analyzed and
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// initialized later.
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// Each plugin can make use of VolumeConfig. The single arg to this func contains *all* enumerated
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// CLI flags meant to configure volume plugins. From that single config, create an instance of volume.VolumeConfig
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// for a specific plugin and pass that instance to the plugin's ProbeVolumePlugins(config) func.
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// HostPath recycling is for testing and development purposes only!
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hostPathConfig := volume.VolumeConfig{
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RecyclerMinimumTimeout: flags.PersistentVolumeRecyclerMinimumTimeoutHostPath,
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RecyclerTimeoutIncrement: flags.PersistentVolumeRecyclerIncrementTimeoutHostPath,
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RecyclerPodTemplate: volume.NewPersistentVolumeRecyclerPodTemplate(),
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}
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if err := attemptToLoadRecycler(flags.PersistentVolumeRecyclerPodTemplateFilePathHostPath, &hostPathConfig); err != nil {
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glog.Fatalf("Could not create hostpath recycler pod from file %s: %+v", flags.PersistentVolumeRecyclerPodTemplateFilePathHostPath, err)
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}
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allPlugins = append(allPlugins, host_path.ProbeVolumePlugins(hostPathConfig)...)
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nfsConfig := volume.VolumeConfig{
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RecyclerMinimumTimeout: flags.PersistentVolumeRecyclerMinimumTimeoutNFS,
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RecyclerTimeoutIncrement: flags.PersistentVolumeRecyclerIncrementTimeoutNFS,
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RecyclerPodTemplate: volume.NewPersistentVolumeRecyclerPodTemplate(),
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}
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if err := attemptToLoadRecycler(flags.PersistentVolumeRecyclerPodTemplateFilePathNFS, &nfsConfig); err != nil {
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glog.Fatalf("Could not create NFS recycler pod from file %s: %+v", flags.PersistentVolumeRecyclerPodTemplateFilePathNFS, err)
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}
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allPlugins = append(allPlugins, nfs.ProbeVolumePlugins(nfsConfig)...)
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return allPlugins
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}
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// attemptToLoadRecycler tries decoding a pod from a filepath for use as a recycler for a volume.
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// If successful, this method will set the recycler on the config.
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// If unsucessful, an error is returned.
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func attemptToLoadRecycler(path string, config *volume.VolumeConfig) error {
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if path != "" {
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recyclerPod, err := io.LoadPodFromFile(path)
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if err != nil {
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return err
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}
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config.RecyclerPodTemplate = recyclerPod
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}
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return nil
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}
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