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Use Root Hash as censusID when creating a snapshot.

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Add more authentication control.
Fix snapshot namespace issue.
Improve documentation.

Signed-off-by: p4u <p4u@dabax.net>
This commit is contained in:
p4u
2019-01-25 21:20:38 +01:00
parent 04dd103bb1
commit 6551f598cf
4 changed files with 119 additions and 96 deletions
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14
tree/tree.go
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@@ -5,7 +5,6 @@ import (
"fmt"
"os/user"
"strings"
"time"
common3 "github.com/vocdoni/go-iden3/common"
mkcore "github.com/vocdoni/go-iden3/core"
@@ -47,7 +46,7 @@ func (t *Tree) Close() {
}
func (t *Tree) AddClaim(data []byte) error {
isSnapshot := strings.Contains(t.Namespace, "snapshot.")
isSnapshot := strings.HasPrefix(t.Namespace, "0x")
if isSnapshot {
return errors.New("No new claims can be added to a Snapshot")
}
@@ -100,15 +99,16 @@ func (t *Tree) Dump() ([]string, error) {
func (t *Tree) Snapshot() (string, error) {
substorage := t.DbStorage.WithPrefix([]byte(t.Namespace))
nsHash := merkletree.HashBytes([]byte(t.Namespace))
currentTime := int64(time.Now().Unix())
snapshotNamespace := fmt.Sprintf("snapshot.%s.%d", t.Namespace, currentTime)
snapshotNamespace := t.GetRoot()
fmt.Printf("Snapshoting %s\n", snapshotNamespace)
t.Namespace = snapshotNamespace
substorage.Iterate(func(key, value []byte) {
nsValue := value[5:37]
if fmt.Sprint(nsHash) == fmt.Sprint(nsValue) {
fmt.Printf("%x\n", value)
data := value[69:]
//fmt.Printf(" Adding value: %s\n", data)
claim := mkcore.NewGenericClaim(snapshotNamespace, "default", data, nil)
err := t.Tree.Add(claim)
//claim := mkcore.NewGenericClaim(snapshotNamespace, "default", data, nil)
err := t.AddClaim(data)
if err != nil {
fmt.Println(err)
}