allow offline box

app.go

@@ -540,6 +540,7 @@ func (a AppConfig) SendSnapshots() (err error) {
 
 	for _, src := range a.Sources {
 		for _, dest := range a.Destinations {
+			if cfg.Box[dest.Box()].online {
 				if *debugFlag {
 					log.Printf("AppConfig.SendSnapshots : %s : Sending snapshots from %s to %s", a.Name, string(src), string(dest))
 				}
@@ -642,6 +643,7 @@ func (a AppConfig) SendSnapshots() (err error) {
 				}
 			}
 		}
+	}
 	err = nil
 	return
 }

box.go

@@ -15,6 +15,7 @@ type Box struct {
 	Name   string `json:"-"`
 	ssh    *SSHConfig
 	zfs    *ZFSConfig
+	online bool
 }
 
 func (b *Box) ZFSTakeSnapshot(schedule, path string) (err error) {
@@ -22,6 +23,11 @@ func (b *Box) ZFSTakeSnapshot(schedule, path string) (err error) {
 		log.Printf("Box.ZFSTakeSnapshot : %s : Taking snapshot on %s for %s", b.Name, path, schedule)
 	}
 
+	if !b.online {
+		err = fmt.Errorf("box offline")
+		return
+	}
+
 	err = b.SnapshotInitialize()
 	if err != nil {
 		return
@@ -49,9 +55,14 @@ func (b *Box) ZFSGetLastSnapshot(path string) (last Snapshot, err error) {
 		log.Printf("Box.ZFSGetLastSnapshot : %s : Start %s (%d snapshots)", b.Name, path, len(b.zfs.SnapshotList))
 	}
 
+	if !b.online {
+		err = fmt.Errorf("box offline")
+		return
+	}
+
 	err = b.SnapshotInitialize()
 	if err != nil {
-		return
+		return last, err
 	}
 
 	b.zfs.M.Lock()
@@ -73,6 +84,11 @@ func (b *Box) ZFSIsLastSnapshot(src Snapshot) (is bool, err error) {
 		log.Printf("Box.ZFSIsLastSnapshot : %s : Start %s", b.Name, string(src))
 	}
 
+	if !b.online {
+		err = fmt.Errorf("box offline")
+		return
+	}
+
 	err = b.SnapshotInitialize()
 	if err != nil {
 		return
@@ -95,6 +111,11 @@ func (b *Box) ZFSGetFirstSnapshot(path string) (first Snapshot, err error) {
 		log.Printf("Box.ZFSGetFirstSnapshot : %s : Start %s", b.Name, path)
 	}
 
+	if !b.online {
+		err = fmt.Errorf("box offline")
+		return
+	}
+
 	err = b.SnapshotInitialize()
 	if err != nil {
 		return
@@ -118,6 +139,11 @@ func (b *Box) ZFSGetNextSnapshot(src Snapshot) (next Snapshot, err error) {
 		log.Printf("Box.ZFSGetNextSnapshot : %s : Start %s", b.Name, string(src))
 	}
 
+	if !b.online {
+		err = fmt.Errorf("box offline")
+		return
+	}
+
 	err = b.SnapshotInitialize()
 	if err != nil {
 		return
@@ -151,6 +177,11 @@ func (b *Box) ZFSUpdateSnapshotList() (err error) {
 		log.Printf("Box.ZFSUpdateSnapshotList : %s : Start", b.Name)
 	}
 
+	if !b.online {
+		err = fmt.Errorf("box offline")
+		return
+	}
+
 	b.zfs.M.Lock()
 	if b.zfs.SnapshotDeleted || b.zfs.SnapshotAdded {
 		b.zfs.SnapshotInitialized = false
@@ -166,6 +197,11 @@ func (b *Box) ZFSGetSnapshotList() (snaps []Snapshot, err error) {
 		log.Printf("Box.ZFSGetSnapshotList : %s : Start", b.Name)
 	}
 
+	if !b.online {
+		err = fmt.Errorf("box offline")
+		return
+	}
+
 	err = b.SnapshotInitialize()
 	if err != nil {
 		return
@@ -179,6 +215,15 @@ func (b *Box) ZFSGetSnapshotList() (snaps []Snapshot, err error) {
 }
 
 func (b *Box) SnapshotInitialize() (err error) {
+	if *debugFlag {
+		log.Printf("Box.SnapshotInitialize : %s : Start", b.Name)
+	}
+
+	if !b.online {
+		err = fmt.Errorf("box offline")
+		return
+	}
+
 	b.zfs.M.Lock()
 	defer b.zfs.M.Unlock()
 
@@ -227,6 +272,11 @@ func (b *Box) ZFSUpdateList() (err error) {
 		log.Printf("Box.ZFSUpdateList : %s : Start", b.Name)
 	}
 
+	if !b.online {
+		err = fmt.Errorf("box offline")
+		return
+	}
+
 	b.zfs.M.Lock()
 	if b.zfs.ZFSDeleted || b.zfs.ZFSAdded {
 		b.zfs.ZFSInitialized = false
@@ -242,6 +292,10 @@ func (b *Box) ZFSIsZFS(path string) bool {
 		log.Printf("Box.ZFSIsZFS : %s : Start %s", b.Name, path)
 	}
 
+	if !b.online {
+		return false
+	}
+
 	err := b.ZFSInitialize()
 	if err != nil {
 		return false
@@ -262,6 +316,11 @@ func (b *Box) ZFSCreateZFS(path string) (err error) {
 		log.Printf("Box.ZFSCreateZFS : %s : Start %s", b.Name, path)
 	}
 
+	if !b.online {
+		err = fmt.Errorf("box offline")
+		return
+	}
+
 	err = b.ZFSInitialize()
 	if err != nil {
 		return
@@ -303,6 +362,14 @@ func (b *Box) ZFSCreateZFS(path string) (err error) {
 func (b *Box) ZFSInitialize() (err error) {
 	b.zfs.M.Lock()
 	defer b.zfs.M.Unlock()
+	if *debugFlag {
+		log.Printf("Box.ZFSInitialize : %s : Start", b.Name)
+	}
+
+	if !b.online {
+		err = fmt.Errorf("box offline")
+		return
+	}
 
 	if b.zfs.ZFSInitialized {
 		return nil
@@ -341,6 +408,11 @@ func (b *Box) ZFSInitialize() (err error) {
 }
 
 func (b *Box) SSHExec(cmd string) (buf *bytes.Buffer, err error) {
+	if !b.online {
+		err = fmt.Errorf("box offline")
+		return
+	}
+
 	buf, err = b.ssh.exec(cmd)
 	return
 }

config.go

@@ -53,6 +53,7 @@ func (c *Config) Load() error {
 
 	for k, v := range c.Box {
 		v.Name = k
+		v.online = false
 		v.zfs = NewZFSConfig()
 		s := &SSHConfig{
 			logged: false,
@@ -97,8 +98,8 @@ func (c *Config) Load() error {
 				log.Printf("Config.Load : ssh.Dial(%s) : %s", k, err)
 			}
 			return err
-		}
+		} else {
-
+			v.online = true
 			session, err := s.client.NewSession()
 			if err != nil {
 				if *debugFlag {
@@ -123,6 +124,7 @@ func (c *Config) Load() error {
 			session.Close()
 			s.logged = true
 		}
+	}
 
 	for _, app := range c.Apps {
 		for _, src := range app.Sources {
@@ -132,7 +134,11 @@ func (c *Config) Load() error {
 			if _, ok := cfg.Box[src.Box()]; !ok {
 				return fmt.Errorf("No box defined for source : %s", string(src))
 			}
+			if !cfg.Box[src.Box()].online {
+				return fmt.Errorf("Source box offline for app : %s", app.Name)
 			}
+		}
+		var allOffline bool = true
 		for _, dest := range app.Destinations {
 			if !dest.Valid() {
 				return fmt.Errorf("Destination not valid : %s", string(dest))
@@ -140,7 +146,14 @@ func (c *Config) Load() error {
 			if _, ok := cfg.Box[dest.Box()]; !ok {
 				return fmt.Errorf("No box defined for destination : %s", string(dest))
 			}
+			if cfg.Box[dest.Box()].online {
+				allOffline = false
 			}
+		}
+		if allOffline {
+			return fmt.Errorf("No online destination box for app : %s", app.Name)
+		}
+
 		for val, before := range app.Before {
 			_, err = regexp.Compile(val)
 			if err != nil {

version.go

@@ -1,6 +1,6 @@
 // Code generated by version.sh (@generated) DO NOT EDIT.
 package main
-var githash = "0083ab6"
+var githash = "762c538"
-var buildstamp = "2022-04-16_07:16:27"
+var buildstamp = "2022-04-16_12:55:05"
-var commits = "28"
+var commits = "29"
-var version = "0083ab6-b28 - 2022-04-16_07:16:27"
+var version = "762c538-b29 - 2022-04-16_12:55:05"