/
down.go
179 lines (157 loc) · 3.9 KB
/
down.go
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package launchpad
import (
"context"
"fmt"
"os"
"go.jetpack.io/launchpad/goutil/errorutil"
"go.jetpack.io/launchpad/pkg/jetlog"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
"github.com/pkg/errors"
)
type DownOptions struct {
ExternalCharts []*ChartConfig
ReleaseName string
InstanceName string
Namespace string
KubeContext string
}
type helmRelease struct {
ReleaseName string
InstanceName string
Namespace string
}
type downPlan struct {
downOptions *DownOptions
helmDriver string
namespace string
releases []helmRelease
}
func down(ctx context.Context, do *DownOptions) error {
plan, err := makeDownPlan(ctx, do)
if err != nil {
return errors.Wrap(err, "failed to make down plan")
}
err = validateDownPlan(plan)
if err != nil {
return errors.Wrap(err, "failed to validate down plan")
}
err = executeDownPlan(ctx, plan)
if err != nil {
return errors.Wrap(err, "failed to execute down plan")
}
return nil
}
func makeDownPlan(ctx context.Context, opts *DownOptions) (*downPlan, error) {
plan := &downPlan{
helmDriver: os.Getenv("HELM_DRIVER"), // empty is fine
namespace: opts.Namespace,
releases: []helmRelease{
{
ReleaseName: opts.ReleaseName,
InstanceName: opts.InstanceName,
Namespace: opts.Namespace,
},
},
downOptions: opts,
}
releases, err := listReleases(
ctx,
plan.helmDriver,
opts.KubeContext,
opts.Namespace,
)
if err != nil {
return nil, errorutil.CombinedError(err, errUnableToAccessHelmReleases)
}
appsInstalled := 0
appFound := false
runtimeFound := false
for _, r := range releases {
if r.Name == RuntimeChartName {
runtimeFound = true
} else {
appsInstalled++
if r.Name == opts.ReleaseName {
appFound = true
}
}
}
if !appFound {
return nil,
errorutil.NewUserErrorf(
"Could not find %s in namespace %s", opts.InstanceName, opts.Namespace)
}
if runtimeFound && appsInstalled > 1 {
yellow.Fprint(
jetlog.Logger(ctx),
"\tFound multiple apps installed. Not removing runtime.",
)
}
if runtimeFound && appsInstalled == 1 {
plan.releases = append(plan.releases, helmRelease{
ReleaseName: RuntimeChartName,
InstanceName: RuntimeChartName,
Namespace: opts.Namespace,
})
}
return plan, nil
}
func validateDownPlan(plan *downPlan) error {
return nil
}
func executeDownPlan(ctx context.Context, plan *downPlan) error {
err := uninstallChart(ctx, plan)
if err != nil {
return errors.Wrap(err, "failed to helm uninstall chart")
}
err = deleteChildResources(ctx, plan)
if err != nil {
return errors.Wrap(err, "failed to delete other resources created while app was running")
}
return nil
}
func deleteChildResources(ctx context.Context, plan *downPlan) error {
rc, err := RESTConfigFromDefaults(plan.downOptions.KubeContext)
if err != nil {
return errors.Wrap(err, "failed to get k8s client rest config")
}
clientset, err := kubernetes.NewForConfig(rc)
if err != nil {
return errors.Wrap(err, "failed to create k8s clientset")
}
// For now, delete using the typed API for the handful of resource types that
// we know we create. As that set expands, rewrite to use untyped API.
selector := metav1.ListOptions{
LabelSelector: fmt.Sprintf(
"app.kubernetes.io/instance=%s",
plan.downOptions.InstanceName,
),
}
namespace := plan.downOptions.Namespace
err = clientset.CoreV1().Pods(namespace).DeleteCollection(
ctx,
metav1.DeleteOptions{},
selector,
)
if err != nil {
return errors.Wrap(err, "failed to delete pods")
}
err = clientset.BatchV1().Jobs(namespace).DeleteCollection(
ctx,
metav1.DeleteOptions{},
selector,
)
if err != nil {
return errors.Wrap(err, "failed to delete jobs")
}
err = clientset.BatchV1().CronJobs(namespace).DeleteCollection(
ctx,
metav1.DeleteOptions{},
selector,
)
if err != nil {
return errors.Wrapf(err, "failed to delete cronjobs for ns %s", namespace)
}
return nil
}