Make nodesync structure instance

main
Nikita Tokarchuk 10 months ago
parent 5726a1ba0d
commit 8c9aefd6c1
Signed by: mainnika
GPG Key ID: A595FB7E3E56911C
  1. 5
      go.mod
  2. 2
      go.sum
  3. 48
      helpers.go
  4. 28
      nodesync.go

@ -0,0 +1,5 @@
module code.tokarch.uk/mainnika/nodesync
go 1.17
require github.com/go-zookeeper/zk v1.0.2

@ -0,0 +1,2 @@
github.com/go-zookeeper/zk v1.0.2 h1:4mx0EYENAdX/B/rbunjlt5+4RTA/a9SMHBRuSKdGxPM=
github.com/go-zookeeper/zk v1.0.2/go.mod h1:nOB03cncLtlp4t+UAkGSV+9beXP/akpekBwL+UX1Qcw=

@ -0,0 +1,48 @@
package sync
import (
"github.com/go-zookeeper/zk"
"fmt"
"strings"
)
// createRecursively creates zookeeper path recursively
func (s *NodeSync) createRecursively(path string, acl []zk.ACL) error {
parts := strings.Split(path, "/")
if len(parts) < 1 {
return fmt.Errorf("path does not contain valid path")
}
for i := range parts {
Ensuring:
for {
child := fmt.Sprintf("%s", strings.Join(parts[:i+1], "/"))
if len(child) == 0 {
break
}
exists, _, err := s.Zk.Exists(child)
switch true {
case err == zk.ErrSessionExpired:
return err
case err != nil:
continue
case exists:
break Ensuring
default:
}
if _, err = s.Zk.Create(child, nil, 0, acl); err != nil {
continue
}
break
}
}
return nil
}

@ -0,0 +1,28 @@
package sync
import (
"github.com/go-zookeeper/zk"
)
// NodeSync structure
type NodeSync struct {
Zk *zk.Conn
rootPath string
}
// Inside private environment keep everything open
var defaultAcl = zk.WorldACL(zk.PermAll)
// New creates a new nodesync instance
func New(zkconn *zk.Conn, rootPath string) (nodeSync *NodeSync, err error) {
nodeSync = &NodeSync{Zk: zkconn, rootPath: rootPath}
err = nodeSync.createRecursively(rootPath, defaultAcl)
if err != nil {
nodeSync = nil
}
return
}
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