78 lines
2.4 KiB
Go
78 lines
2.4 KiB
Go
package cmd
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import (
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wisski_distillery "github.com/FAU-CDI/wisski-distillery"
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"github.com/FAU-CDI/wisski-distillery/internal/cli"
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"github.com/FAU-CDI/wisski-distillery/internal/dis/component/exporter"
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"github.com/tkw1536/goprogram/exit"
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)
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// Snapshot creates a snapshot of an instance
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var Snapshot wisski_distillery.Command = snapshot{}
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type snapshot struct {
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Keepalive bool `short:"k" long:"keepalive" description:"keep instance running while taking a backup. might lead to inconsistent state"`
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StagingOnly bool `short:"s" long:"staging-only" description:"do not package into a snapshot archive, but only create a staging directory"`
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Parts []string `short:"p" long:"parts" description:"parts to include in snapshots. defaults to all parts, use l to list all available parts"`
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List bool `short:"l" long:"list-parts" description:"list available parts"`
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Positionals struct {
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Slug string `positional-arg-name:"SLUG" required:"1-1" description:"slug of instance to take a snapshot of"`
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Dest string "positional-arg-name:\"DEST\" description:\"destination path to write snapshot archive to. defaults to the `snapshots/archives/` directory\""
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} `positional-args:"true"`
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}
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func (snapshot) Description() wisski_distillery.Description {
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return wisski_distillery.Description{
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Requirements: cli.Requirements{
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NeedsDistillery: true,
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},
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Command: "snapshot",
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Description: "generates a snapshot archive for the provided instance",
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}
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}
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var errSnapshotFailed = exit.Error{
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Message: "failed to make a snapshot",
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ExitCode: exit.ExitGeneric,
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}
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var errSnapshotWissKI = exit.Error{
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Message: "unable to find WissKI",
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ExitCode: exit.ExitGeneric,
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}
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func (sn snapshot) Run(context wisski_distillery.Context) error {
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dis := context.Environment
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// list available parts
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if sn.List {
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for _, part := range dis.Exporter().Parts() {
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context.Println(part)
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}
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return nil
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}
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// find the instance!
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instance, err := dis.Instances().WissKI(context.Context, sn.Positionals.Slug)
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if err != nil {
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return errSnapshotWissKI.Wrap(err)
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}
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// do a snapshot of it!
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err = dis.Exporter().MakeExport(context.Context, context.Stderr, exporter.ExportTask{
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Dest: sn.Positionals.Dest,
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StagingOnly: sn.StagingOnly,
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SnapshotDescription: exporter.SnapshotDescription{
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Parts: sn.Parts,
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},
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Instance: instance,
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})
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if err != nil {
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return errSnapshotFailed.Wrap(err)
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}
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return nil
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}
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