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start using ssh pipes

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This commit is contained in:
shoopea 2023-08-21 14:37:47 +02:00
parent 1a1713eb14
commit f616c4ccf9
5 changed files with 109 additions and 49 deletions
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1
app.go
View File

@ -486,7 +486,6 @@ func (a *App) Transfer() error {
log.WithFields(log.Fields{"app": a.name, "call": "Mkdir", "attr": dest, "error": err}).Errorf("")
return err
}
if err := TransferZfs(src, dest2); err != nil {
log.WithFields(log.Fields{"app": a.name, "call": "TransferZfs", "src": src, "dest": dest, "error": err}).Errorf("")
return err

63
box.go
View File

@ -11,15 +11,16 @@ import (
)
type Box struct {
name string
addr string
user string
key string
zfs *BoxZfs
sshPool pool.Pool
created bool
online bool
mx sync.Mutex
name string
addr string
user string
key string
zfs *BoxZfs
sshPool pool.Pool
created bool
online bool
allowDirectConnect bool
mx sync.Mutex
}
type BoxSshPool struct {
@ -30,7 +31,7 @@ type BoxSshPool struct {
mx sync.Mutex
}
func (c *Config) NewBox(name, addr, user, key string) (b *Box, err error) {
func (c *Config) NewBox(name, addr, user, key string, direct bool) (b *Box, err error) {
log.WithFields(log.Fields{"name": name, "addr": addr, "user": user, "key": key}).Debugf("starting")
defer log.WithFields(log.Fields{"name": name, "addr": addr, "user": user, "key": key}).Debugf("done")
@ -55,9 +56,10 @@ func (c *Config) NewBox(name, addr, user, key string) (b *Box, err error) {
zfs: &BoxZfs{
online: false,
},
sshPool: p,
online: false,
created: true,
sshPool: p,
online: false,
created: true,
allowDirectConnect: true, //FIXME use direct
}
b.zfs.box = b
@ -144,8 +146,15 @@ func TransferZfs(from, to Addr) error {
var (
err error
fromSnapshots, toSnapshots []*ZfsSnapshot
directTransfer bool
)
if cfg.box[from.Box()].allowDirectConnect && cfg.box[to.Box()].allowDirectConnect {
directTransfer = true
} else {
directTransfer = false
}
if fromSnapshots, err = from.ValidSnapshots(); err != nil {
log.WithFields(log.Fields{"from": from, "to": to, "call": "ValidSnapshots", "attr": from, "error": err}).Errorf("")
return err
@ -162,13 +171,18 @@ func TransferZfs(from, to Addr) error {
if len(toSnapshots) == 0 {
log.WithFields(log.Fields{"from": from, "to": to}).Debugf("initiating destination")
if _, err := to.BoxExec("ssh " + from.Box() + " zfs send " + fromSnapshots[0].String() + " | zfs recv -F " + to.Path()); err != nil {
log.WithFields(log.Fields{"from": from, "to": to, "call": "BoxExec", "error": err}).Errorf("")
return err
if directTransfer {
if _, err := to.BoxExec("ssh " + from.Box() + " zfs send " + fromSnapshots[0].String() + " | zfs recv -F " + to.Path()); err != nil {
log.WithFields(log.Fields{"from": from, "to": to, "call": "BoxExec", "error": err}).Errorf("")
return err
}
newToSnapshot := &ZfsSnapshot{name: fromSnapshots[0].name, fs: cfg.box[to.Box()].zfs.filesystems[to.Path()]}
toSnapshots = append(toSnapshots, newToSnapshot)
cfg.box[to.Box()].zfs.filesystems[to.Path()].AddSnapshot(newToSnapshot)
} else {
//handle indirect transfer
}
newToSnapshot := &ZfsSnapshot{name: fromSnapshots[0].name, fs: cfg.box[to.Box()].zfs.filesystems[to.Path()]}
toSnapshots = append(toSnapshots, newToSnapshot)
cfg.box[to.Box()].zfs.filesystems[to.Path()].AddSnapshot(newToSnapshot)
}
fromFromSnapshotId := -1
@ -190,10 +204,13 @@ func TransferZfs(from, to Addr) error {
if fromFromSnapshotId < len(fromSnapshots)-1 {
log.WithFields(log.Fields{"from": from, "to": to}).Debugf("transfering from %s to %s", fromSnapshots[fromFromSnapshotId].name, fromSnapshots[len(fromSnapshots)-1].name)
if _, err := to.BoxExec("ssh " + from.Box() + " zfs send -I " + fromSnapshots[fromFromSnapshotId].String() + " " + fromSnapshots[len(fromSnapshots)-1].String() + " | zfs recv -F " + to.Path()); err != nil {
log.WithFields(log.Fields{"from": from, "to": to, "call": "BoxExec", "error": err}).Errorf("")
return err
if directTransfer {
if _, err := to.BoxExec("ssh " + from.Box() + " zfs send -I " + fromSnapshots[fromFromSnapshotId].String() + " " + fromSnapshots[len(fromSnapshots)-1].String() + " | zfs recv -F " + to.Path()); err != nil {
log.WithFields(log.Fields{"from": from, "to": to, "call": "BoxExec", "error": err}).Errorf("")
return err
}
} else {
// handle indirect transfer
}
for _, v := range fromSnapshots[fromFromSnapshotId+1:] {

9
config.go
View File

@ -37,9 +37,10 @@ var (
var sampleCfg []byte
type BoxConfig struct {
Addr string `json:"addr"`
User string `json:"user"`
Key string `json:"key"`
Addr string `json:"addr"`
User string `json:"user"`
Key string `json:"key"`
AllowDirectConnect bool `json:"allow_direct_connect"`
}
type AppConfig struct {
@ -135,7 +136,7 @@ func LoadConfigByte(conf []byte) (*Config, error) {
c.box = make(map[string]*Box)
for k, v := range c.Box {
if b, err := c.NewBox(k, v.Addr, v.User, v.Key); err != nil {
if b, err := c.NewBox(k, v.Addr, v.User, v.Key, v.AllowDirectConnect); err != nil {
log.WithFields(log.Fields{"call": "NewBox", "attr": k, "error": err}).Errorf("")
return nil, err
} else {

77
ssh.go
View File

@ -1,7 +1,7 @@
package main
import (
"bytes"
"io"
"os"
"time"
@ -14,10 +14,14 @@ const SshDialTimeout = time.Duration(10 * time.Second)
const SshInactivityTimeout = time.Duration(time.Minute)
type Ssh struct {
name string
signer ssh.Signer
config *ssh.ClientConfig
client *ssh.Client
name string
signer ssh.Signer
config *ssh.ClientConfig
client *ssh.Client
session *ssh.Session
in io.WriteCloser
out io.Reader
err io.Reader
}
func NewSsh(name, addr, user, key string) (*Ssh, error) {
@ -101,27 +105,66 @@ func (s *Ssh) Exec(cmd string) (string, error) {
log.WithFields(log.Fields{"name": s.name, "cmd": cmd}).Debugf("starting")
defer log.WithFields(log.Fields{"name": s.name, "cmd": cmd}).Debugf("done")
session, err := s.client.NewSession()
if err != nil {
log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "client.NewSession", "error": err}).Errorf("")
if err := s.ExecPipe(cmd); err != nil {
log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "ssh.ExecPipe", "error": err}).Errorf("")
return "", err
}
defer session.Close()
defer s.session.Close()
if session.Setenv("TZ", cfg.Timezone); err != nil {
if err := s.session.Wait(); err != nil {
log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "session.Setenv", "error": err}).Errorf("")
return "", err
}
var bufout, buferr bytes.Buffer
session.Stdout = &bufout
session.Stderr = &buferr
err = session.Run(cmd)
buf, err := io.ReadAll(s.out)
if err != nil {
log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "session.Run", "error": err, "stderr": buferr.String()}).Errorf("")
log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "io.ReadAll", "error": err}).Errorf("")
return "", err
}
return bufout.String(), nil
return string(buf), nil
}
func (s *Ssh) ExecPipe(cmd string) error {
log.WithFields(log.Fields{"name": s.name, "cmd": cmd}).Debugf("starting")
defer log.WithFields(log.Fields{"name": s.name, "cmd": cmd}).Debugf("done")
session, err := s.client.NewSession()
if err != nil {
log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "client.NewSession", "error": err}).Errorf("")
return err
}
s.session = session
if s.session.Setenv("TZ", cfg.Timezone); err != nil {
log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "session.Setenv", "error": err}).Errorf("")
return err
}
if s.in, err = s.session.StdinPipe(); err != nil {
log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "session.StdinPipe", "error": err}).Errorf("")
s.session.Close()
return err
}
if s.out, err = s.session.StdoutPipe(); err != nil {
log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "session.StdoutPipe", "error": err}).Errorf("")
s.session.Close()
return err
}
if s.err, err = s.session.StderrPipe(); err != nil {
log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "session.StderrPipe", "error": err}).Errorf("")
s.session.Close()
return err
}
if err = s.session.Start(cmd); err != nil {
log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "session.Start", "error": err}).Errorf("")
s.session.Close()
return err
}
return nil
}

8
version.go
View File

@ -1,7 +1,7 @@
// Code generated by version.sh (@generated) DO NOT EDIT.
package main
var githash = "b07a745"
var githash = "1a1713e"
var branch = "v2"
var buildstamp = "2023-08-17_17:25:15"
var commits = "82"
var version = "b07a745-b82 - 2023-08-17_17:25:15"
var buildstamp = "2023-08-21_12:35:47"
var commits = "83"
var version = "1a1713e-b83 - 2023-08-21_12:35:47"