73 lines
1.9 KiB
Go
73 lines
1.9 KiB
Go
package instances
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import (
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"github.com/FAU-CDI/wisski-distillery/internal/models"
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"github.com/FAU-CDI/wisski-distillery/pkg/environment"
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"github.com/tkw1536/goprogram/lib/collection"
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)
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// SnapshotLogFor retrieves (and prunes) the SnapshotLog for the provided slug.
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// An empty slug returns the log of backups.
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func (instances *Instances) SnapshotLogFor(slug string) (snapshots []models.Snapshot, err error) {
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snapshots, err = instances.SnapshotLog()
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if err != nil {
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return nil, err
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}
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return collection.Filter(snapshots, func(s models.Snapshot) bool {
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return s.Slug == slug
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}), nil
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}
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// SnapshotLog retrieves (and prunes) all entries in the snapshot log.
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func (instances *Instances) SnapshotLog() ([]models.Snapshot, error) {
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// query the table!
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table, err := instances.SQL.QueryTable(false, models.SnapshotTable)
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if err != nil {
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return nil, err
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}
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// find all the snapshots
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var snapshots []models.Snapshot
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res := table.Find(&snapshots)
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if res.Error != nil {
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return nil, res.Error
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}
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// partition out the snapshots that have been deleted!
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parts := collection.Partition(snapshots, func(s models.Snapshot) bool {
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_, err := instances.Core.Environment.Stat(s.Path)
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return !environment.IsNotExist(err)
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})
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// go and delete them!
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if len(parts[false]) > 0 {
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if err := table.Delete(parts[false]).Error; err != nil {
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return nil, err
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}
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}
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// return the ones that still exist
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return parts[true], nil
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}
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// Snapshots returns the list of snapshots of this WissKI
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func (wisski *WissKI) Snapshots() (snapshots []models.Snapshot, err error) {
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return wisski.instances.SnapshotLogFor(wisski.Slug)
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}
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// AddSnapshotLog adds a log entry for the provided entry
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func (instances *Instances) AddSnapshotLog(snapshot models.Snapshot) error {
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// find the table
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table, err := instances.SQL.QueryTable(false, models.SnapshotTable)
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if err != nil {
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return err
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}
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// and save it!
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res := table.Create(&snapshot)
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if res.Error != nil {
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return res.Error
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}
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return nil
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}
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