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select snapshots to send

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This commit is contained in:
shoopea 2021-10-11 10:33:30 +08:00
parent d30cb6f304
commit c5b75c245c
1 changed files with 133 additions and 1 deletions
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134
backup.go
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@ -35,6 +35,7 @@ type AppConfig struct {
Before map[string]Location `json:"before"`
After map[string]Location `json:"after"`
}
type SSHConfig struct {
signer ssh.Signer
config *ssh.ClientConfig
@ -74,6 +75,16 @@ func (l Location) Valid() bool {
return len(s) == 2
}
func (s Snapshot) Path() string {
s2 := strings.Split(string(s), `@`)
return s2[0]
}
func (s Snapshot) Name() string {
s2 := strings.Split(string(s), `@`)
return s2[1]
}
//Load config from file
func (c *Config) Load() error {
b, err := ioutil.ReadFile(*cfgFile)
@ -221,6 +232,62 @@ func (c *Config) Close() error {
return nil
}
func (s *SSHConfig) getLastSnapshot(path string) (Snapshot, error) {
var last Snapshot
for _, v := range s.snapshot {
if v.Path() == path {
last = v
} else {
if len(string(last)) > 0 {
return last, nil
}
}
}
if len(string(last)) > 0 {
return last, nil
}
return last, fmt.Errorf("no snapshot")
}
func (s *SSHConfig) isLastSnapshot(snapshot Snapshot) bool {
_, err := s.getNextSnapshot(snapshot)
if err != nil {
return true
} else {
return false
}
}
func (s *SSHConfig) getFirstSnapshot(path string) (Snapshot, error) {
var first Snapshot
for _, v := range s.snapshot {
if v.Path() == path {
first = v
return first, nil
}
}
return first, fmt.Errorf("no snapshot")
}
func (s *SSHConfig) getNextSnapshot(snapshot Snapshot) (Snapshot, error) {
var next Snapshot
for id, v := range s.snapshot {
if v == snapshot {
if len(s.snapshot) > id+1 {
next = s.snapshot[id+1]
if next.Path() == snapshot.Path() {
return next, nil
} else {
return next, fmt.Errorf("no snapshot")
}
} else {
return next, fmt.Errorf("no snapshot")
}
}
}
return next, fmt.Errorf("no snapshot")
}
func (s *SSHConfig) getSnapshotList() error {
if *debugFlag {
log.Printf("SSHConfig.getSnapshotList : Start %s", s.name)
@ -480,7 +547,72 @@ func (a AppConfig) RunAppSchedule(schedule string) error {
for _, dest := range a.Destinations {
if *debugFlag {
log.Printf("RunAppSchedule : Sending snapshots from %s to %s", string(src), string(dest))
}
dLastSnapshot, err := cfg.ssh[dest.Box()].getLastSnapshot(dest.Path() + "/" + src.Path())
if err != nil {
if *debugFlag {
log.Printf("RunAppSchedule : No snapshot for %s on %s", string(src), dest.Box())
}
sFirstSnapshot, err := cfg.ssh[src.Box()].getFirstSnapshot(src.Path())
if err != nil {
if *debugFlag {
log.Printf("RunAppSchedule : No snapshot for %s", string(src))
}
return err
} else {
if *debugFlag {
log.Printf("RunAppSchedule : Initializing snapshot on %s from %s", dest.Box(), string(sFirstSnapshot))
}
sNextSnapshot, err := cfg.ssh[src.Box()].getNextSnapshot(sFirstSnapshot)
if err != nil {
if *debugFlag {
log.Printf("RunAppSchedule : All snapshots sent for %s", string(src))
}
} else {
if *debugFlag {
log.Printf("RunAppSchedule : Sending %s to %s", string(sNextSnapshot), dest.Box())
}
for !cfg.ssh[src.Box()].isLastSnapshot(sNextSnapshot) {
sNextSnapshot, err = cfg.ssh[src.Box()].getNextSnapshot(sNextSnapshot)
if *debugFlag {
log.Printf("RunAppSchedule : Sending %s to %s", string(sNextSnapshot), dest.Box())
}
}
if *debugFlag {
log.Printf("RunAppSchedule : All snapshots sent for %s", string(src))
}
}
}
} else {
if *debugFlag {
log.Printf("RunAppSchedule : Last snapshot on %s is %s", dest.Box(), string(dLastSnapshot))
}
if !cfg.ssh[src.Box()].isLastSnapshot(dLastSnapshot) {
sNextSnapshot, err := cfg.ssh[src.Box()].getNextSnapshot(dLastSnapshot)
if err != nil {
if *debugFlag {
log.Printf("RunAppSchedule : No snapshot for %s", string(src))
}
return err
} else {
if *debugFlag {
log.Printf("RunAppSchedule : Sending %s to %s", string(sNextSnapshot), dest.Box())
}
for !cfg.ssh[src.Box()].isLastSnapshot(sNextSnapshot) {
sNextSnapshot, err = cfg.ssh[src.Box()].getNextSnapshot(sNextSnapshot)
if *debugFlag {
log.Printf("RunAppSchedule : Sending %s to %s", string(sNextSnapshot), dest.Box())
}
}
if *debugFlag {
log.Printf("RunAppSchedule : All snapshots sent for", string(src))
}
}
} else {
if *debugFlag {
log.Printf("RunAppSchedule : Last snapshot sent for", string(src))
}
}
}
}
}