Loc-Chain/loc-chain-backend
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Comments and fix to registerPeer()

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This commit is contained in:
Garrett Mills 2021-04-10 21:04:08 -05:00
parent 942d175495
commit 0cb78fef35
Signed by: garrettmills
GPG Key ID: D2BF5FBA8298F246
1 changed files with 28 additions and 1 deletions
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29
src/app/units/Blockchain.ts
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@ -14,6 +14,11 @@ import axios from "axios"
import {collect, uuid_v4} from "@extollo/util"
import {ExposureResourceItem} from "../rtdb/ExposureResource"
/**
* Verify an OpenPGP signature based on an armored key.
* @param armoredKey
* @param armoredMessage
*/
async function pgpVerify(armoredKey: string, armoredMessage: string) {
const [publicKeys, message] = await Promise.all([
openpgp.readKey({ armoredKey }),
@ -125,10 +130,13 @@ export class Blockchain extends Unit {
@Inject()
protected readonly config!: Config
/** The most-correct, approved chain according to this node. */
protected approvedChain: Block[] = []
/** The peers this node will communicate with. */
protected peers: Peer[] = []
/** If true, the writeback/refresh cycle will stop. */
protected breakForExit = false
/**
@ -176,6 +184,7 @@ export class Blockchain extends Unit {
this.breakForExit = true
}
/** Load the initial data from the data sources into memory for fast access. */
async initialLoad() {
const [peers, chain] = await Promise.all([
this.firebase.ref('peers')
@ -237,6 +246,8 @@ export class Blockchain extends Unit {
this.logging.info(`Registering peer: ${peer.host}`)
const header = this.config.get('app.api_server_header')
this.peers.push(peer)
try {
await axios.post(`${peer.host}api/v1/peer`, {
host: this.getBaseURL(),
@ -298,11 +309,15 @@ export class Blockchain extends Unit {
).every(Boolean)
}
/**
* Perform the consensus algorithm among the peers of this node
* to push a block onto the chain.
*/
public async refresh() {
if ( this.breakForExit ) return;
this.logging.debug('Called refresh().')
const peers = await this.getPeers()
const peers = this.getPeers()
const time_x_block: {[key: string]: Block} = {}
const time_x_blocks: {[key: string]: Block[]} = {}
const time_x_peer: {[key: string]: Peer | true} = {}
@ -363,12 +378,18 @@ export class Blockchain extends Unit {
await this.writeback()
}
/**
* Get the current blockchain including the block submitted by this node.
*/
public getSubmitChain(): BlockResourceItem[] {
const submit = this.getSubmitBlock()
if ( !submit ) return this.approvedChain
else return [...this.approvedChain, submit]
}
/**
* Write the in-memory data back to persistent data stores.
*/
public async writeback() {
if ( this.breakForExit ) return;
this.logging.info('Generating initial proof-of-elapsed-time. This will take a second...')
@ -386,6 +407,9 @@ export class Blockchain extends Unit {
this.refresh()
}
/**
* Get the Block instance that we want to submit to the chain, if we have any transactions.
*/
public getSubmitBlock(): Block | undefined {
if ( !this.pendingTransactions?.length ) {
return
@ -422,6 +446,9 @@ export class Blockchain extends Unit {
this.pendingTransactions.push(...exposures)
}
/**
* Get the peer-to-peer identifier token.
*/
public getPeerToken() {
return Buffer.from(this.genesisProof, 'utf-8')
.toString('base64')