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message-pool.js
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message-pool.js
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const Message = require("./message");
const { MSG_TYPE } = require("./config");
const math = require("mathjs");
class MessagePool {
constructor() {
this.messages = [];
}
// General
addMessage(msg) {
this.messages.push(msg);
}
getAll() {
return this.messages;
}
deleteMessage(hash) {
for (let i = 0; i < this.blocks.length; i++) {
if (this.messages[i].hash === hash) this.messages.splice(i, 1);
}
}
verifyMessage(msg, blockchain) {
return Message.verify(msg, blockchain);
}
messageExistsWithHash(message) {
for (const msg of this.messages) {
if (msg.hash === message.hash && !msg.isSpent) return true;
}
return false;
}
//
getAllRelatedMessages(dataSharingReq) {
let res = [];
for (const mess of this.messages) {
const msg = { ...mess };
if (msg.msgType === MSG_TYPE.dataSharingRes) {
if (msg.dataSharingReq.hash === dataSharingReq.hash && !msg.isSpent) {
delete msg["isSpent"];
res.push(msg);
}
}
if (msg.msgType === MSG_TYPE.dataRetrieval) {
if (!msg.isSpent) {
delete msg["isSpent"];
res.push(msg);
}
}
if (msg.msgType === MSG_TYPE.dataSharingReq) {
if (!msg.isSpent && msg.hash === dataSharingReq.hash) {
delete msg["isSpent"];
res.push(msg);
}
}
}
return res;
}
// For dataRetrieval
messageDataRetrievalExistsWithPublicKey(message) {
for (const msg of this.messages) {
if (
msg.msgType === MSG_TYPE.dataRetrieval &&
msg.publicKey === message.publicKey &&
!msg.isSpent
)
return true;
}
return false;
}
// For heartBeat
getAllHeartBeatRes(message) {
let res = [];
for (const msg of this.messages) {
if (
msg.msgType === MSG_TYPE.heartBeatRes &&
msg.heartBeatReq.hash === message.hash &&
!msg.isSpent
)
res.push(msg);
}
return res;
}
isMessageHeartBeatResDuplicated(message) {
for (const msg of this.messages) {
if (
msg.msgType === MSG_TYPE.heartBeatRes &&
msg.heartBeatReq.hash === message.heartBeatReq.hash &&
!msg.isSpent &&
msg.publicKey === message.publicKey
)
return true;
}
return false;
}
// For dataSharingRes
isMessageDataSharingResDuplicated(message) {
for (const msg of this.messages) {
if (
msg.msgType === MSG_TYPE.dataSharingRes &&
msg.dataSharingReq.hash === message.dataSharingReq.hash &&
!msg.isSpent &&
msg.publicKey === message.publicKey
)
return true;
}
return false;
}
getAllDataSharingRes(hash) {
let res = [];
for (const msg of this.messages) {
if (
msg.msgType === MSG_TYPE.dataSharingRes &&
msg.dataSharingReq.hash === hash &&
!msg.isSpent
)
res.push(msg);
}
return res;
}
getValidMAERange(hash, epsilon) {
let res = [];
for (const msg of this.messages) {
if (
msg.msgType === MSG_TYPE.dataSharingRes &&
msg.dataSharingReq.hash === hash &&
!msg.isSpent
)
res.push(msg.MAE);
}
const mean = math.mean(res);
const std = math.std(res);
return [mean - std - epsilon, mean + std + epsilon];
}
enoughDataSharingRes(allHeartBeatRes, allDataSharingRes) {
for (const heartBeatRes of allHeartBeatRes) {
let found = false;
for (const dataSharingRes of allDataSharingRes) {
if (heartBeatRes.publicKey === dataSharingRes.publicKey) {
found = true;
break;
}
}
if (!found) return false;
}
return true;
}
isProposer(wallet, allDataSharingRes, minValidMAE, maxValidMAE) {
let minMAE = 1000000009;
for (const msg of allDataSharingRes) {
if (msg.MAE >= minValidMAE && msg.MAE <= maxValidMAE)
minMAE = Math.min(minMAE, msg.MAE);
}
for (const msg of allDataSharingRes) {
if (msg.MAE === minMAE && msg.publicKey === wallet.getPublicKey() && minMAE !== 1000000009) {
return true;
}
}
return false;
}
// For blockVerifyRes
getAllBlockVerifyRes(hash) {
let res = [];
for (const msg of this.messages) {
if (
msg.msgType === MSG_TYPE.blockVerifyRes &&
msg.hash === hash &&
!msg.isSpent
)
res.push(msg);
}
return res;
}
getAllCommitteeSignaturesFromBlockVerifyRes(hash) {
let res = [];
for (const msg of this.messages) {
if (
msg.msgType === MSG_TYPE.blockVerifyRes &&
msg.blockVerifyReq.hash === hash &&
!msg.isSpent
) {
res.push(msg.committeeSignature);
}
}
return res;
}
enoughBlockVerifyRes(allHeartBeatRes, allBlockVerifyResCommitteeSignatures) {
for (const heartBeatRes of allHeartBeatRes) {
let found = false;
for (const blockVerifyResCommitteeSignature of allBlockVerifyResCommitteeSignatures) {
if (
heartBeatRes.publicKey === blockVerifyResCommitteeSignature.publicKey
) {
found = true;
break;
}
}
if (!found) return false;
}
return true;
}
isMessageBlockVerifyResDuplicated(message) {
for (const msg of this.messages) {
if (
msg.msgType === MSG_TYPE.blockVerifyRes &&
msg.blockVerifyReq.hash === message.blockVerifyReq.hash &&
!msg.isSpent &&
msg.publicKey === message.publicKey
)
return true;
}
return false;
}
}
module.exports = MessagePool;