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detectcloud.go
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detectcloud.go
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// Copyright 2019 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
package provider
import (
"github.com/juju/errors"
k8s "github.com/juju/juju/caas/kubernetes"
"github.com/juju/juju/caas/kubernetes/clientconfig"
k8scloud "github.com/juju/juju/caas/kubernetes/cloud"
"github.com/juju/juju/cloud"
)
// DetectClouds implements environs.CloudDetector.
func (p kubernetesEnvironProvider) DetectClouds() ([]cloud.Cloud, error) {
clouds := []cloud.Cloud{}
localKubeConfigClouds, err := localKubeConfigClouds()
if err != nil {
return clouds, errors.Annotate(err, "detecting local kube config clouds")
}
clouds = append(clouds, localKubeConfigClouds...)
mk8sCloud, err := p.builtinCloudGetter(p.cmdRunner)
if err == nil {
clouds = append(clouds, mk8sCloud)
return clouds, nil
}
if errors.IsNotFound(err) {
err = errors.Annotatef(err, "microk8s is not installed")
}
logger.Debugf("failed to query local microk8s: %s", err.Error())
return clouds, nil
}
func localKubeConfigClouds() ([]cloud.Cloud, error) {
k8sConfig, err := clientconfig.GetLocalKubeConfig()
if err != nil {
return []cloud.Cloud{}, errors.Annotate(err, "reading local kubeconf")
}
return k8scloud.CloudsFromKubeConfigContextsWithParams(
k8scloud.CloudParamaters{
Description: "A local Kubernetes context",
},
k8sConfig,
)
}
// DetectCloud implements environs.CloudDetector.
func (p kubernetesEnvironProvider) DetectCloud(name string) (cloud.Cloud, error) {
if name == k8s.K8sCloudMicrok8s {
// TODO: this whole thing is poorly written and we need to handle this better.
// Also builtinCloudGetter should really be called, microk8sCloudGetter...
microk8sCloud, err := p.builtinCloudGetter(p.cmdRunner)
if err != nil {
return cloud.Cloud{}, errors.Trace(err)
}
return microk8sCloud, nil
}
localKubeConfigClouds, err := localKubeConfigClouds()
if err != nil {
return cloud.Cloud{}, errors.Annotatef(err, "detecting local kube config clouds for %s", name)
}
for _, cloud := range localKubeConfigClouds {
if cloud.Name == name {
return cloud, nil
}
}
return cloud.Cloud{}, errors.NotFoundf("cloud %s", name)
}