Merge branch 'feature/ww-head-watchers'

app.yml

@@ -1,4 +1,50 @@
 connectionTimeout: 10000
+ws2pServers:
+  - address: ws://g1-test.cgeek.fr:22001
+    expectedPubkey: 3dnbnYY9i2bHMQUGyFp5GVvJ2wBkVpus31cDJA5cfRpj
+    salt: test
+    passwd: test
+    currency: g1-test # Ensure we connect to the correct currency
+
+bmaServers:
+  - address: https://g1-test.cgeek.fr
+    frequency: 60000 # 1'
+#  - address: http://remuniter.cgeek.fr:16120
+#    frequency: 60000 # 1'
+#    maxLate: 14400000 # 4h'
+
+dprobeHeartbeats:
+#  - address: https://wotwizard.cgeek.fr/dprobe.heartbeat.txt
+#    frequency: 60000 # 1'
+#    lastBeat: 300000 # 5'
+
+webDiffServers:
+#  - file1: https://wotwizard.cgeek.fr/WWMeta.json
+#    file2: https://wotwizard2.cgeek.fr/WWMeta.json
+#    frequency: 60000
+
+headServers:
+  - address: https://g1.cgeek.fr
+    frequency: 60000 # 1'
+    maxLateBlocks: 3
+    observedPubkey: A5LQXCkx8b6rzppfqdqeHbKPDGmKZtRcqwxP4BSeag5r
+
+wwMeta:
+  - address: https://wot-wizard.duniter.org
+    frequency: 60000 # 1'
+    maxLate: 14400 # 4h
+
+mail:
+  enabled: false
+  host: smtp.sparkpostmail.com
+  port: 587
+  auth: LOGIN
+  encryption: STARTTLS
+  username: SMTP_Injection
+  apikey: 6976eb51635b680b832dbe4914524d2c038a13b6
+  from: '"DWatcher" <dwatcher@cgeek.fr>'
+  to: cem.moreau@gmail.com
+
 reconnectionDelays:
   - 5000
   - 10000
@@ -27,45 +73,3 @@ reconnectionDelays:
   - 21600000 # 6h
   - 21600000 # 6h
   - 43200000 # 12h
-  - 43200000 # 12h
-  - 43200000 # 12h
-  - 43200000 # 12h
-  - 43200000 # 12h
-  - 43200000 # 12h
-  - 43200000 # 12h
-  - 43200000 # 12h
-  - 43200000 # 12h
-ws2pServers:
-  - address: ws://g1-test.cgeek.fr:22001
-    expectedPubkey: 3dnbnYY9i2bHMQUGyFp5GVvJ2wBkVpus31cDJA5cfRpj
-    salt: test
-    passwd: test
-    currency: g1-test # Ensure we connect to the correct currency
-
-bmaServers:
-  - address: https://g1-test.cgeek.fr
-    frequency: 60000 # 1'
-  - address: http://remuniter.cgeek.fr:16120
-    frequency: 60000 # 1'
-    maxLate: 14400000 # 4h'
-
-dprobeHeartbeats:
-  - address: https://wotwizard.cgeek.fr/dprobe.heartbeat.txt
-    frequency: 60000 # 1'
-    lastBeat: 300000 # 5'
-
-webDiffServers:
-  - file1: https://wotwizard.cgeek.fr/WWMeta.json
-    file2: https://wotwizard2.cgeek.fr/WWMeta.json
-    frequency: 60000
-
-mail:
-  enabled: false
-  host: smtp.sparkpostmail.com
-  port: 587
-  auth: LOGIN
-  encryption: STARTTLS
-  username: SMTP_Injection
-  apikey: 6976eb51635b680b832dbe4914524d2c038a13b6
-  from: '"DWatcher" <dwatcher@cgeek.fr>'
-  to: cem.moreau@gmail.com

src/dwatcher.ts

@@ -1,6 +1,7 @@
 import * as minimist from 'minimist'
 import * as path from 'path'
 import {dwatch} from './lib/dwatch'
+import {Watcher} from "./lib/types/state";
 
 process.on('uncaughtException', (err) => {
   // Dunno why this specific exception is not caught
@@ -20,9 +21,9 @@ process.on('unhandledRejection', (err) => {
   console.log('Starting...')
 
   try {
-    await dwatch(argv.conf || path.join(__dirname, '../app.yml'))
+    const watchers: Watcher[] = await dwatch(argv.conf || path.join(__dirname, '../app.yml'))
   } catch (e) {
+    // webappServe(watchers)
     console.error(e)
   }
 })()
-

src/lib/dwatch.ts

@@ -5,14 +5,20 @@ import {ws2pWatcher} from "./watchers/ws2p/ws2p-watcher";
 import {bmaWatcher} from "./watchers/bma/bma-watcher";
 import {dprobeHeartbeat} from './watchers/dprobe/dprobe-heartbeat-watcher'
 import {webDiffWatcher} from "./watchers/webdiff/webdiff-watcher";
+import {Watcher} from "./types/state";
+import {headWatcher} from "./watchers/bma/head-watcher";
+import {jsonWatcher} from "./watchers/wotwizard/json-watcher";
 
 export async function dwatch(confFile: string) {
 
   const yml = fs.readFileSync(confFile, 'utf8')
   const conf = yaml.load(yml) as Conf
-
-  await Promise.all((conf.ws2pServers || []).map(ws2pWatcher(conf)))
-  await Promise.all((conf.bmaServers || []).map(bmaWatcher(conf)))
-  await Promise.all((conf.dprobeHeartbeats || []).map(dprobeHeartbeat(conf)))
-  await Promise.all((conf.webDiffServers || []).map(webDiffWatcher(conf)))
+  const watchers: Watcher[] = [];
+  (await Promise.all((conf.ws2pServers || []).map(ws2pWatcher(conf)))).forEach(w => watchers.push(w));
+  (await Promise.all((conf.bmaServers || []).map(bmaWatcher(conf)))).forEach(w => watchers.push(w));
+  (await Promise.all((conf.dprobeHeartbeats || []).map(dprobeHeartbeat(conf)))).forEach(w => watchers.push(w));
+  (await Promise.all((conf.webDiffServers || []).map(webDiffWatcher(conf)))).forEach(w => watchers.push(w));
+  (await Promise.all((conf.headServers || []).map(headWatcher(conf)))).forEach(w => watchers.push(w));
+  (await Promise.all((conf.wwMeta || []).map(jsonWatcher(conf)))).forEach(w => watchers.push(w));
+  return watchers
 }

src/lib/types/conf.ts

@@ -5,6 +5,8 @@ export interface Conf {
   bmaServers: ConfBMA[]
   dprobeHeartbeats: ConfDprobeHeartbeat[]
   webDiffServers: ConfWebDiff[]
+  headServers: ConfHead[]
+  wwMeta: ConfWWMeta[]
   mail: ConfMail
 }
 
@@ -17,6 +19,7 @@ export interface ConfWS2P {
 }
 
 export interface ConfURL {
+  name: string
   address: string
   frequency: number
 }
@@ -32,6 +35,15 @@ export interface ConfBMA extends ConfURL {
   maxLate?: number
 }
 
+export interface ConfHead extends ConfURL {
+  observedPubkey: string
+  maxLateBlocks: number
+}
+
+export interface ConfWWMeta extends ConfURL {
+  maxLate: number
+}
+
 export interface ConfDprobeHeartbeat extends ConfURL{
   lastBeat: number
 }

src/lib/types/state.ts

@@ -0,0 +1,21 @@
+export class Watcher {
+    private state: 'INIT'|'OK'|'FAILURE'|'RECOVERED'
+    private failureMessage?: string
+
+    constructor(public readonly name: string) {
+        this.state = "INIT"
+    }
+
+    public stateOK() {
+        this.state = "OK"
+    }
+
+    public stateRecovered() {
+        this.state = "RECOVERED"
+    }
+
+    public stateFailure(error: string) {
+        this.state = "FAILURE"
+        this.failureMessage = error
+    }
+}

src/lib/watcherLoop.ts

@@ -1,4 +1,7 @@
-export async function watcherLoop(
+import {Watcher} from "./types/state";
+
+export function watcherLoop(
+  name: string,
   connect: () => Promise<void>,
   onConnectionClosed: () => Promise<void>,
   reconnectionDelays: number[],
@@ -7,8 +10,9 @@ export async function watcherLoop(
   onRestart: () => Promise<void>,
   onRestartSuccess: () => Promise<void>,
   onError: (e: Error) => Promise<void>,
-) {
+): Watcher {
 
+  let watcher: Watcher = new Watcher(name)
   let hasStarted = false
 
   ;(async () => {
@@ -28,8 +32,10 @@ export async function watcherLoop(
         if (!hasStarted) {
           hasStarted = true
           await onStart()
+          watcher.stateOK()
         } else {
           await onRestartSuccess()
+          watcher.stateRecovered()
         }
 
         // We reset the delay of reconnection
@@ -39,6 +45,7 @@ export async function watcherLoop(
 
       } catch (e) {
         await onError(e)
+        watcher.stateFailure(e && e.message || e)
       }
       // Wait before reconnecting
       const waitingDelay = reconnectionDelays[Math.min(reconnectionDelays.length - 1, i)]
@@ -47,4 +54,6 @@ export async function watcherLoop(
       i++
     }
   })()
+
+  return watcher
 }

src/lib/watchers/abstract/url-watcher.ts

@@ -2,15 +2,17 @@ import {watcherLoop} from "../../watcherLoop";
 import {Conf, ConfURL} from "../../types/conf";
 import Axios from "axios";
 import {mail} from "../../mail";
+import {Watcher} from "../../types/state";
 
 export function urlWatcher(conf: Conf, checkValidity: (data: any) => Promise<void>) {
 
-  return async (urlConf: ConfURL) => {
+  return async (urlConf: ConfURL): Promise<Watcher> => {
 
     let nodeDownRes: () => void
     let nodeDownPromise: Promise<void> = new Promise(res => nodeDownRes = res)
 
-    await watcherLoop(
+    return watcherLoop(
+      urlConf.name,
       async () => {
         let interval: NodeJS.Timer;
         const res = await Axios.get(urlConf.address)

src/lib/watchers/bma/bma-watcher.ts

@@ -8,12 +8,13 @@ export function bmaWatcher(conf: Conf) {
 
   return async (bmaServer: ConfBMA) => {
 
-    await urlWatcher(conf, async (data) => {
+    return urlWatcher(conf, async (data) => {
       const block = data as { medianTime: number }
       if (bmaServer.maxLate && moment().unix() - block.medianTime > bmaServer.maxLate) {
         throw 'Server is late'
       }
     })({
+      name: `BMA ${bmaServer.address}`,
       address: bmaServer.address + URL_PATH,
       frequency: bmaServer.frequency
     })

src/lib/watchers/bma/head-watcher.ts

@@ -0,0 +1,104 @@
+import {Conf, ConfHead} from "../../types/conf";
+import {urlWatcher} from '../abstract/url-watcher'
+import {WS2PHead} from "duniter/app/modules/ws2p/lib/WS2PCluster";
+
+function handleLateness(confHead: ConfHead, mainHeads: HeadMetric[], observedHead?: TrameWS2P) {
+  if (!mainHeads.length) {
+    throw 'No consensus found'
+  }
+  if (!observedHead) {
+    throw `Observed pubkey ${confHead.observedPubkey} not found in heads`
+  }
+  const matchingHeads = mainHeads.filter(h => h.blockstamp === observedHead.blockstamp)
+  if (!matchingHeads.length) {
+    // Check how much late is the node
+    const farAwayHeads = mainHeads.filter(h => h.blockNumber - observedHead.blockNumber >= confHead.maxLateBlocks)
+    if (farAwayHeads.length) {
+      throw `Observed pubkey is too late for ${farAwayHeads.length} consensus by at least ${confHead.maxLateBlocks}`
+    }
+  }
+}
+
+export function headWatcher(conf: Conf) {
+
+  const URL_PATH = '/network/ws2p/heads'
+
+  return async (confHead: ConfHead) => {
+
+    return urlWatcher(conf, async (data) => {
+      const heads = data as { heads: WS2PHead[] }
+      const mainHeads = getMain(heads)
+      const observedHead = getObserved(heads, confHead.observedPubkey)
+      handleLateness(confHead, mainHeads, observedHead)
+    })({
+      name: `head watcher ${confHead.address}`,
+      address: confHead.address + URL_PATH,
+      frequency: confHead.frequency
+    })
+  }
+}
+
+function getMain(heads: { heads: WS2PHead[] }): HeadMetric[] {
+  const mapByHash: { [k: string]: HeadMetric } = {}
+  for (const head of heads.heads) {
+    const trame = getTrame(head)
+    if (trame) {
+      mapByHash[trame.blockstamp] = mapByHash[trame.blockstamp] || { pubkeys: [], blockNumber: trame.blockNumber, blockstamp: trame.blockstamp }
+      mapByHash[trame.blockstamp].pubkeys.push(trame.pubkey)
+    }
+    else {
+      console.warn('Pas de trame pour %s', head)
+    }
+  }
+  return Object.keys(mapByHash).reduce((main, blockstamp) => {
+    const newMetric = mapByHash[blockstamp]
+    if (!main.length) {
+      return [newMetric]
+    }
+    const newMain: HeadMetric[] = main.filter(m => m.pubkeys.length >= newMetric.pubkeys.length)
+    let maxLen = main.length ? main[0].pubkeys.length : newMetric.pubkeys.length
+    if (newMetric.pubkeys.length >= maxLen) {
+      newMain.push(newMetric)
+    }
+    return newMain
+  }, [] as HeadMetric[])
+}
+
+function getObserved(heads: { heads: WS2PHead[] }, observedPubkey: string): TrameWS2P|undefined {
+  const trame = heads.heads
+      .map(getTrame)
+      .filter(trame =>  trame && trame.pubkey === observedPubkey)[0]
+  if (!trame) {
+    return undefined
+  }
+  return trame
+}
+
+function getTrame(head: WS2PHead): TrameWS2P|undefined {
+  if (head.messageV2) {
+    const [ protocol, type, trameVersion, pubkey, blockstamp, peerUuid, software, softVersion, n1, n2, n3 ] = head.messageV2.split(':')
+    const [ blockNumber, blockHash ] = blockstamp.split('-')
+    return { pubkey, blockstamp, blockNumber: parseInt(blockNumber), blockHash }
+  }
+  else if (head.message) {
+    const [ protocol, type, trameVersion, pubkey, blockstamp, peerUuid, software, softVersion, n1 ] = head.message.split(':')
+    const [ blockNumber, blockHash ] = blockstamp.split('-')
+    return { pubkey, blockstamp, blockNumber: parseInt(blockNumber), blockHash }
+  }
+  else {
+    return undefined
+  }
+}
+
+interface HeadMetric {
+  pubkeys: string[]
+  blockstamp: string
+  blockNumber: number
+}
+
+interface TrameWS2P {
+  pubkey: string
+  blockstamp: string
+  blockNumber: number
+  blockHash: string
+}

src/lib/watchers/dprobe/dprobe-heartbeat-watcher.ts

@@ -6,7 +6,7 @@ export function dprobeHeartbeat(conf: Conf) {
 
   return async (dconf: ConfDprobeHeartbeat) => {
 
-    await urlWatcher(conf, async (data) => {
+    return urlWatcher(conf, async (data) => {
       const last = moment(data, 'YYYY-MM-DD HH:mm:ss\n')
       const past = moment().diff(last)
       if (past > dconf.lastBeat) {

src/lib/watchers/webdiff/webdiff-watcher.ts

@@ -39,7 +39,8 @@ export function webDiffWatcher(conf: Conf) {
       }
     }
 
-    await watcherLoop(
+    return watcherLoop(
+      `webdiff ${target}`,
       async () => {
         const data1 = await Axios.get(webDiffConf.file1)
         const data2 = await Axios.get(webDiffConf.file2)

src/lib/watchers/wotwizard/json-watcher.ts

@@ -0,0 +1,32 @@
+import {Conf, ConfWWMeta} from "../../types/conf";
+import {urlWatcher} from '../abstract/url-watcher'
+
+function handleLateness(confHead: ConfWWMeta, data: WWMetaJson) {
+  const diff = Math.round(Date.now()/1000 - data.now)
+  if (diff >= confHead.maxLate) {
+    throw `WWMeta.json is late by ${diff}s (>= ${confHead.maxLate})`
+  }
+}
+
+export function jsonWatcher(conf: Conf) {
+
+  const URL_PATH = '/WWMeta.json'
+
+  return async (confWWMeta: ConfWWMeta) => {
+
+    return urlWatcher(conf, async (data) => {
+      handleLateness(confWWMeta, data)
+    })({
+      name: `WWMeta.json watcher ${confWWMeta.address}`,
+      address: confWWMeta.address + URL_PATH,
+      frequency: confWWMeta.frequency
+    })
+  }
+}
+
+interface WWMetaJson {
+  dossNb: number
+  block: number
+  now: number
+  computation_duration: number
+}

src/lib/watchers/ws2p/ws2p-watcher.ts

@@ -16,7 +16,8 @@ export function ws2pWatcher(conf: Conf) {
     const keypair = new Key(keys.pub, keys.sec)
     const target = `${wserver.address} (${wserver.expectedPubkey.substr(0, 8)})`
 
-    await watcherLoop(
+    return watcherLoop(
+      `WS2P ${wserver.address}`,
       async () => {
 
         const localAuth = new WS2PPubkeyLocalAuth(wserver.currency, keypair, "", async () => true)

tsconfig.json

@@ -9,7 +9,8 @@
     "noImplicitThis": true,
     "noImplicitAny": true,
     "noImplicitReturns": true,
-    "experimentalDecorators": true
+    "experimentalDecorators": true,
+    "skipLibCheck": true
   },
   "include": [
     "src/*",