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admin: Add purge interface

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This commit adds a new option to the admin interface to purge an
instance. This requires the user to manually confirm the name of the
instance.
This commit is contained in:
Tom Wiesing 2023-01-16 18:22:13 +01:00
parent 3321b5d0ba
commit 2384ee0841
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16 changed files with 175 additions and 84 deletions
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66
cmd/purge.go
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@ -3,8 +3,6 @@ package cmd
import (
wisski_distillery "github.com/FAU-CDI/wisski-distillery"
"github.com/FAU-CDI/wisski-distillery/internal/cli"
"github.com/FAU-CDI/wisski-distillery/internal/dis/component/instances"
"github.com/FAU-CDI/wisski-distillery/pkg/logging"
"github.com/tkw1536/goprogram/exit"
)
@ -28,21 +26,11 @@ func (purge) Description() wisski_distillery.Description {
}
}
var errPurgeNoDetails = exit.Error{
Message: "unable to find instance details for purge: %s",
ExitCode: exit.ExitGeneric,
}
var errPurgeNoConfirmation = exit.Error{
Message: "aborting after request was not confirmed. either type `yes` or pass `--yes` on the command line",
ExitCode: exit.ExitGeneric,
}
var errPurgeGeneric = exit.Error{
Message: "unable to purge instance %q: %s",
ExitCode: exit.ExitGeneric,
}
func (p purge) Run(context wisski_distillery.Context) error {
dis := context.Environment
slug := p.Positionals.Slug
@ -57,57 +45,5 @@ func (p purge) Run(context wisski_distillery.Context) error {
}
}
// load the instance (first via bookkeeping, then via defaults)
logging.LogMessage(context.Stderr, context.Context, "Checking bookkeeping table")
instance, err := dis.Instances().WissKI(context.Context, slug)
if err == instances.ErrWissKINotFound {
context.Println("Not found in bookkeeping table, assuming defaults")
instance, err = dis.Instances().Create(slug)
}
if err != nil {
return errPurgeNoDetails.WithMessageF(err)
}
// remove docker stack
logging.LogMessage(context.Stderr, context.Context, "Stopping and removing docker container")
if err := instance.Barrel().Stack().Down(context.Context, context.Stderr); err != nil {
context.EPrintln(err)
}
// remove the filesystem
logging.LogMessage(context.Stderr, context.Context, "Removing from filesystem %s", instance.FilesystemBase)
if err := dis.Still.Environment.RemoveAll(instance.FilesystemBase); err != nil {
context.EPrintln(err)
}
// purge all the instance specific resources
if err := logging.LogOperation(func() error {
domain := instance.Domain()
for _, pc := range dis.Provisionable() {
logging.LogMessage(context.Stderr, context.Context, "Purging %s resources", pc.Name())
err := pc.Purge(context.Context, instance.Instance, domain)
if err != nil {
return err
}
}
return nil
}, context.Stderr, context.Context, "Purging instance-specific resources"); err != nil {
return errPurgeGeneric.WithMessageF(slug, err)
}
// remove from bookkeeping
logging.LogMessage(context.Stderr, context.Context, "Removing instance from bookkeeping")
if err := instance.Bookkeeping().Delete(context.Context); err != nil {
context.EPrintln(err)
}
// remove the filesystem
logging.LogMessage(context.Stderr, context.Context, "Remove lock data")
if instance.Locker().TryUnlock(context.Context) {
context.EPrintln("instance was not locked")
}
logging.LogMessage(context.Stderr, context.Context, "Instance %s has been purged", slug)
return nil
return dis.Purger().Purge(context.Context, context.Stdout, slug)
}