Update "InnerRingUpdate" method
This commit is contained in:
alexvanin
parent
abdbe6b9dc
commit
7a806bd550
1 changed files with 76 additions and 54 deletions
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@ -37,6 +37,7 @@ const (
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cashedChequesKey = "cheques"
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blockDiff = 20 // change base on performance evaluation
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publicKeySize = 33
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minInnerRingSize = 3
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)
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func Main(op string, args []interface{}) interface{} {
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@ -107,7 +108,7 @@ func Main(op string, args []interface{}) interface{} {
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panic("irCandidateRemove: you should be the owner of the public key")
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}
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var nodes = []node{} // it is explicit declaration of empty slice, not nil
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nodes := []node{} // it is explicit declaration of empty slice, not nil
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candidates := getInnerRingNodes(ctx, candidatesKey)
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for i := range candidates {
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@ -277,17 +278,12 @@ func Main(op string, args []interface{}) interface{} {
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return true
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case "InnerRingUpdate":
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data := args[0].([]byte)
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if len(args) < 1+minInnerRingSize {
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// cheque id + inner ring public keys
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panic("irUpdate: bad arguments")
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}
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id := data[:8]
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var ln interface{} = data[8:10]
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listItemCount := ln.(int)
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listSize := listItemCount * 33
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offset := 8 + 2 + listSize
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irList := getSerialized(ctx, "InnerRingList").([]node)
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usedList := getSerialized(ctx, "UsedVerifCheckList").([]cheque)
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irList := getInnerRingNodes(ctx, innerRingKey)
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threshold := len(irList)/3*2 + 1
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irKey := innerRingInvoker(irList)
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@ -295,56 +291,61 @@ func Main(op string, args []interface{}) interface{} {
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panic("innerRingUpdate: invoked by non inner ring node")
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}
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id := args[0].([]byte)
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c := cheque{id: id}
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if containsCheck(usedList, c) {
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panic("innerRingUpdate: cheque has non unique id")
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cashedCheques := getCashedCheques(ctx)
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chequesList, ok := addCheque(cashedCheques, c)
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if !ok {
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panic("irUpdate: non unique id")
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}
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chequeHash := crypto.SHA256(data)
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oldNodes := 0
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candidates := getInnerRingNodes(ctx, candidatesKey)
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newIR := []node{}
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n := vote(ctx, chequeHash, irKey)
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loop:
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for i := 1; i < len(args); i++ {
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key := args[i].([]byte)
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if len(key) != publicKeySize {
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panic("irUpdate: invalid public key in inner ring list")
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}
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// find key in actual inner ring list
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for j := 0; j < len(irList); j++ {
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n := irList[j]
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if bytesEqual(n.pub, key) {
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newIR = append(newIR, n)
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oldNodes++
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continue loop
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}
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}
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// find key in candidates list
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candidates, newIR, ok = rmNodeByKey(candidates, newIR, key)
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if !ok {
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panic("irUpdate: unknown public key in inner ring list")
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}
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}
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if oldNodes < len(newIR)*2/3+1 {
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panic("irUpdate: inner ring change rate must not be more than 1/3 ")
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}
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hashID := crypto.SHA256(id)
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n := vote(ctx, hashID, irKey)
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if n >= threshold {
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removeVotes(ctx, chequeHash)
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removeVotes(ctx, hashID)
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candidates := getSerialized(ctx, "InnerRingCandidates").([]node)
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offset = 10
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newIR := []node{}
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setSerialized(ctx, candidatesKey, candidates)
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setSerialized(ctx, innerRingKey, newIR)
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setSerialized(ctx, cashedChequesKey, chequesList)
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loop:
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for i := 0; i < listItemCount; i, offset = i+1, offset+33 {
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pub := data[offset : offset+33]
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for j := 0; j < len(irList); j++ {
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n := irList[j]
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if util.Equals(n.pub, pub) {
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newIR = append(newIR, n)
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continue loop
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}
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}
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for j := 0; j < len(candidates); j++ {
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n := candidates[j]
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if util.Equals(n.pub, pub) {
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newIR = append(newIR, n)
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continue loop
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}
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}
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}
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if len(newIR) != listItemCount {
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panic("new inner ring wasn't processed correctly")
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}
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for i := 0; i < len(newIR); i++ {
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n := newIR[i]
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delSerializedIR(ctx, "InnerRingCandidates", n.pub)
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}
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newIRData := binary.Serialize(newIR)
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storage.Put(ctx, "InnerRingList", newIRData)
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putSerialized(ctx, "UsedVerifCheckList", c)
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runtime.Notify("InnerRingUpdate", c.id, newIRData)
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runtime.Notify("InnerRingUpdate", c.id, newIR)
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runtime.Log("irUpdate: inner ring list has been updated")
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}
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return true
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@ -623,6 +624,27 @@ func addNode(lst []node, n node) ([]node, bool) {
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return lst, true
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}
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// rmNodeByKey returns slice of nodes without node with key 'k',
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// slices of nodes 'add' with node with key 'k' and bool flag,
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// that set to false if node with a key 'k' does not exists in the slice 'lst'.
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func rmNodeByKey(lst, add []node, k []byte) ([]node, []node, bool) {
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var (
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flag bool
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newLst = []node{} // it is explicit declaration of empty slice, not nil
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)
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for i := 0; i < len(lst); i++ {
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if bytesEqual(k, lst[i].pub) {
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add = append(add, lst[i])
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flag = true
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} else {
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newLst = append(newLst, lst[i])
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}
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}
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return newLst, add, flag
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}
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// bytesEqual compares two slice of bytes by wrapping them into strings,
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// which is necessary with new util.Equal interop behaviour, see neo-go#1176.
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func bytesEqual(a []byte, b []byte) bool {
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