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Move snapshot finding functions to new file

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This commit is contained in:
Alexander Neumann 2017-06-18 13:06:52 +02:00
parent 5a34799554
commit 77037e33c9
2 changed files with 50 additions and 45 deletions
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45
src/restic/snapshot.go
View file

@ -6,8 +6,6 @@ import (
"os/user"
"path/filepath"
"time"
"restic/errors"
)
// Snapshot is the state of a resource at one point in time.
@ -189,46 +187,3 @@ func (sn Snapshots) Less(i, j int) bool {
func (sn Snapshots) Swap(i, j int) {
sn[i], sn[j] = sn[j], sn[i]
}
// ErrNoSnapshotFound is returned when no snapshot for the given criteria could be found.
var ErrNoSnapshotFound = errors.New("no snapshot found")
// FindLatestSnapshot finds latest snapshot with optional target/directory, tags and hostname filters.
func FindLatestSnapshot(ctx context.Context, repo Repository, targets []string, tags []string, hostname string) (ID, error) {
var (
latest time.Time
latestID ID
found bool
)
for snapshotID := range repo.List(ctx, SnapshotFile) {
snapshot, err := LoadSnapshot(ctx, repo, snapshotID)
if err != nil {
return ID{}, errors.Errorf("Error listing snapshot: %v", err)
}
if snapshot.Time.After(latest) && (hostname == "" || hostname == snapshot.Hostname) && snapshot.HasTags(tags) && snapshot.HasPaths(targets) {
latest = snapshot.Time
latestID = snapshotID
found = true
}
}
if !found {
return ID{}, ErrNoSnapshotFound
}
return latestID, nil
}
// FindSnapshot takes a string and tries to find a snapshot whose ID matches
// the string as closely as possible.
func FindSnapshot(repo Repository, s string) (ID, error) {
// find snapshot id with prefix
name, err := Find(repo.Backend(), SnapshotFile, s)
if err != nil {
return ID{}, err
}
return ParseID(name)
}

50
src/restic/snapshot_find.go Normal file
View file

@ -0,0 +1,50 @@
package restic
import (
"context"
"restic/errors"
"time"
)
// ErrNoSnapshotFound is returned when no snapshot for the given criteria could be found.
var ErrNoSnapshotFound = errors.New("no snapshot found")
// FindLatestSnapshot finds latest snapshot with optional target/directory, tags and hostname filters.
func FindLatestSnapshot(ctx context.Context, repo Repository, targets []string, tags []string, hostname string) (ID, error) {
var (
latest time.Time
latestID ID
found bool
)
for snapshotID := range repo.List(ctx, SnapshotFile) {
snapshot, err := LoadSnapshot(ctx, repo, snapshotID)
if err != nil {
return ID{}, errors.Errorf("Error listing snapshot: %v", err)
}
if snapshot.Time.After(latest) && (hostname == "" || hostname == snapshot.Hostname) && snapshot.HasTags(tags) && snapshot.HasPaths(targets) {
latest = snapshot.Time
latestID = snapshotID
found = true
}
}
if !found {
return ID{}, ErrNoSnapshotFound
}
return latestID, nil
}
// FindSnapshot takes a string and tries to find a snapshot whose ID matches
// the string as closely as possible.
func FindSnapshot(repo Repository, s string) (ID, error) {
// find snapshot id with prefix
name, err := Find(repo.Backend(), SnapshotFile, s)
if err != nil {
return ID{}, err
}
return ParseID(name)
}