diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..8617652 --- /dev/null +++ b/.gitignore @@ -0,0 +1,3 @@ +node_modules/ +dist/ +.vscode/ diff --git a/README.md b/README.md new file mode 100644 index 0000000..0fb5bae --- /dev/null +++ b/README.md @@ -0,0 +1,29 @@ +# Hastic server + +Implementation of basic pattern recognition and unsupervised learning for anomamaly detection. + +Implementation of analytic unit for Hastic. +see [REST API](REST.md) + +## Build & run + +### Analytic unit + +Python3 project + +``` +pip3 install pandas +pip3 install influxdb + +``` + +### Server + +Node.js project + +``` +cd server +npm install +npm run build +npm start +``` diff --git a/REST.md b/REST.md new file mode 100644 index 0000000..e7e676c --- /dev/null +++ b/REST.md @@ -0,0 +1,198 @@ +# Hastic server REST API + +## /anomalies + +### Get anomalies +`GET /anomalies?id=[&name=]` + +NOTE: `name` param is deprecated, use `id` instead + +Return data format: + +``` +{ + "name": "", + "metric": "", + "status": "" +} +``` + +status field can be one of: + +- `learning` +- `ready` +- `failed` + +### Get anomaly status +`GET /anomalies/status?id=[&name=]` + +NOTE: `name` param is deprecated, use `id` instead + +Return data format: + +``` +{ + "status": +} +``` + +status field can be one of: + +- `learning` +- `ready` +- `failed` + +### Add anomaly + +`POST /anomalies` + +Data format: + +``` +{ + "name": "cpu_utilization_supervised", + "metric": { + "datasource": "influx accelerometer", + "targets": [ + + ] + }, + "panelUrl": "http://grafana.example.com/d/oNZ35bWiz/new-dashboard-copy?panelId=2&fullscreen" +} +``` + +`targets` example: + +``` +{ + "alias": "command", + "groupBy": [], + "measurement": "data", + "orderByTime": "ASC", + "policy": "default", + "refId": "A", + "resultFormat": "time_series", + "select": [ + [ + { + "params": [ + "command" + ], + "type": "field" + } + ] + ], + "tags": [] +} +``` + +Return data format: + +``` +{ + "anomaly_id": "" +} +``` + +### Delete anpmalies +`DELETE /anomalies` + +Data format: + +``` +{ + "id": "", + "name": "" // deprecated, use id instead +} +``` + +Return data format: + +``` +Success +``` + +## /segments + +### Get segments +`GET /segments?anomaly_id=[&last_segment=][&from=][&to=]` + +Return data format: + +``` +{ + "segments": [ + { + "id": 0, + "start": 1392765184318, + "finish": 1397243699000, + "labeled": true + }, + ... + ] +} +``` + +### Update segments + +`PATCH /segments` + +Data format: + +``` +{ + "anomaly_id": "", + "name": "", // deprecated, use id instead + "added_segments": [ + { + "start": 1397164656000, + "finish": 1397243699000 + }, + ... + ], + "removed_segments": [3, 9] +} +``` + +Return data format: + +``` +{ + "added_ids": [12, ...] +} +``` + +## /alerts + +### Check if alert is enabled for anomaly + +`GET /alerts?anomaly_id=` + +Return data format: + +``` +{ + "enable": true +} +``` + +### Enable / disable alert for anomaly + +`POST /alerts` + +Data format: + +``` +{ + "anomaly_id": "", + "enable": true +} +``` + +Return data format: + +``` +{ + "status": "Ok" +} +``` diff --git a/server/README.md b/server/README.md new file mode 100644 index 0000000..882cfdb --- /dev/null +++ b/server/README.md @@ -0,0 +1,27 @@ +# Hastic server + +REST server for managing data for analytics. + +Running on 8000 port. + +# Build + +``` +npm install +npm run build +``` + +# Run + +``` +npm start +``` + +# Development + +You should have `nodemon` module installed to run development server. + +``` +npm i -g nodemon +npm run dev +``` diff --git a/server/build/dev-server.js b/server/build/dev-server.js new file mode 100644 index 0000000..76ed9d3 --- /dev/null +++ b/server/build/dev-server.js @@ -0,0 +1,10 @@ +const { spawn } = require('child_process'); + +const webpack = spawn('webpack', ['--config', 'build/webpack.dev.conf.js'], { + stdio: 'inherit', + shell: true +}); +//webpack.stdout.pipe(process.stdout); + +const nodemon = spawn('nodemon', ['../dist/server', '--watch', 'server.js']); +nodemon.stdout.pipe(process.stdout); diff --git a/server/build/webpack.base.conf.js b/server/build/webpack.base.conf.js new file mode 100644 index 0000000..b910b69 --- /dev/null +++ b/server/build/webpack.base.conf.js @@ -0,0 +1,52 @@ +const path = require('path'); +const fs = require('fs'); + +const webpack = require('webpack'); + + +function resolve(p) { + return path.join(__dirname, '/../', p); +} + +module.exports = { + target: 'node', + node: { + __dirname: false, + __filename: false, + }, + context: resolve('./src'), + entry: './index', + devtool: 'inline-source-map', + output: { + filename: "server.js", + path: resolve('dist') + }, + externals: [ + function(context, request, callback) { + if(request[0] == '.') { + callback(); + } else { + callback(null, "require('" + request + "')"); + } + } + ], + plugins: [ + new webpack.optimize.OccurrenceOrderPlugin(), + new webpack.HotModuleReplacementPlugin(), + new webpack.DefinePlugin({ + 'process.env.NODE_ENV': JSON.stringify('development') + }) + ], + resolve: { + extensions: [".ts", ".js"] + }, + module: { + rules: [ + { + test: /\.ts$/, + loader: "ts-loader", + exclude: /node_modules/ + } + ] + } +} diff --git a/server/build/webpack.dev.conf.js b/server/build/webpack.dev.conf.js new file mode 100644 index 0000000..7be3655 --- /dev/null +++ b/server/build/webpack.dev.conf.js @@ -0,0 +1,4 @@ +var base = require('./webpack.base.conf'); + +base.watch = true; +module.exports = base; \ No newline at end of file diff --git a/server/build/webpack.prod.conf.js b/server/build/webpack.prod.conf.js new file mode 100644 index 0000000..b5b325e --- /dev/null +++ b/server/build/webpack.prod.conf.js @@ -0,0 +1,3 @@ +var base = require('./webpack.base.conf'); + +module.exports = base; \ No newline at end of file diff --git a/server/package-lock.json b/server/package-lock.json new file mode 100644 index 0000000..1484146 --- /dev/null +++ b/server/package-lock.json @@ -0,0 +1,5093 @@ 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"sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=", + "dev": true + } + } +} diff --git a/server/package.json b/server/package.json new file mode 100644 index 0000000..fe97965 --- /dev/null +++ b/server/package.json @@ -0,0 +1,32 @@ +{ + "name": "hastic-server", + "version": "1.0.0", + "description": "REST server for managing data for analytics", + "scripts": { + "start": "node dist/server.js", + "dev": "node build/dev-server.js", + "build": "webpack --config build/webpack.prod.conf.js" + }, + "repository": { + "type": "git", + "url": "git+https://github.com/hastic/hastic-server.git" + }, + "author": "CorpGlory", + "license": "ISC", + "bugs": { + "url": "https://github.com/hastic/hastic-server/issues" + }, + "homepage": "https://github.com/hastic/hastic-server#readme", + "dependencies": { + "express": "^4.16.3", + "fast-csv": "^2.4.1", + "telegraf": "^3.21.0" + }, + "devDependencies": { + "@types/express": "^4.11.1", + "nodemon": "^1.17.3", + "ts-loader": "^3.5.0", + "typescript": "^2.8.3", + "webpack": "^3.5.6" + } +} diff --git a/server/src/config.ts b/server/src/config.ts new file mode 100644 index 0000000..a6ada60 --- /dev/null +++ b/server/src/config.ts @@ -0,0 +1,9 @@ +import * as path from 'path'; + +const DATA_PATH = path.join(__dirname, '../data'); +const ANALYTICS_PATH = path.join(__dirname, '../../src'); +const ANOMALIES_PATH = path.join(ANALYTICS_PATH, 'anomalies'); +const SEGMENTS_PATH = path.join(ANALYTICS_PATH, 'segments'); +const METRICS_PATH = path.join(ANALYTICS_PATH, 'metrics'); + +export { DATA_PATH, ANALYTICS_PATH, ANOMALIES_PATH, SEGMENTS_PATH, METRICS_PATH } diff --git a/server/src/index.ts b/server/src/index.ts new file mode 100644 index 0000000..3b3dcaf --- /dev/null +++ b/server/src/index.ts @@ -0,0 +1,31 @@ +import * as express from 'express'; +import * as bodyParser from 'body-parser'; + +import { router as anomaliesRouter } from './routes/anomalies'; +import { router as segmentsRouter } from './routes/segments'; +import { router as alertsRouter } from './routes/alerts'; +import { tgBotInit } from './services/notification'; + +const app = express(); +const PORT = 8000; + +app.use(bodyParser.json()); +app.use(bodyParser.urlencoded({ extended: true })); + +app.use(function (req, res, next) { + res.header('Access-Control-Allow-Origin', '*'); + res.header('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, PATCH, OPTIONS'); + res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept'); + next(); +}); + +app.use('/anomalies', anomaliesRouter); +app.use('/segments', segmentsRouter); +app.use('/alerts', alertsRouter); +app.use('/', (req, res) => { res.send('Analytic unit works') }); + +app.listen(PORT, () => { + console.log(`Server is running on :${PORT}`) +}); + +tgBotInit(); diff --git a/server/src/routes/alerts.ts b/server/src/routes/alerts.ts new file mode 100644 index 0000000..195b000 --- /dev/null +++ b/server/src/routes/alerts.ts @@ -0,0 +1,62 @@ +import * as express from 'express'; +import {AnomalyId, getAnomalyIdByName, loadAnomalyById} from '../services/anomalyType'; +import { getAlertsAnomalies, saveAlertsAnomalies } from '../services/alerts'; + +function getAlert(req, res) { + try { + let anomalyId: AnomalyId = req.query.anomaly_id; + let anomaly = loadAnomalyById(anomalyId) + if (anomaly == null) { + anomalyId = getAnomalyIdByName(anomalyId.toLowerCase()); + } + + let alertsAnomalies = getAlertsAnomalies(); + let pos = alertsAnomalies.indexOf(anomalyId); + + let enable: boolean = (pos !== -1); + res.status(200).send({ + enable + }); + } catch(e) { + res.status(500).send({ + code: 500, + message: 'Internal error' + }); + } +} + +function changeAlert(req, res) { + try { + let anomalyId: AnomalyId = req.body.anomaly_id; + let enable: boolean = req.body.enable; + + let anomaly = loadAnomalyById(anomalyId) + if (anomaly == null) { + anomalyId = getAnomalyIdByName(anomalyId.toLowerCase()); + } + + let alertsAnomalies = getAlertsAnomalies(); + let pos: number = alertsAnomalies.indexOf(anomalyId); + if(enable && pos == -1) { + alertsAnomalies.push(anomalyId); + saveAlertsAnomalies(alertsAnomalies); + } else if(!enable && pos > -1) { + alertsAnomalies.splice(pos, 1); + saveAlertsAnomalies(alertsAnomalies); + } + res.status(200).send({ + status: 'Ok' + }); + } catch(e) { + res.status(500).send({ + code: 500, + message: 'Internal error' + }); + } +} + +export const router = express.Router(); + +router.get('/', getAlert); +router.post('/', changeAlert); + diff --git a/server/src/routes/anomalies.ts b/server/src/routes/anomalies.ts new file mode 100644 index 0000000..72c38d2 --- /dev/null +++ b/server/src/routes/anomalies.ts @@ -0,0 +1,136 @@ +import * as express from 'express'; + +import { + Metric, + Anomaly, + saveAnomaly, + insertAnomaly, removeAnomaly, loadAnomalyByName, loadAnomalyById, getAnomalyIdByName +} from '../services/anomalyType'; +import { runLearning } from '../services/analytics' +import { saveTargets } from '../services/metrics'; + +async function sendAnomalyTypeStatus(req, res) { + let id = req.query.id; + let name = req.query.name; + try { + let anomaly: Anomaly; + if(id !== undefined) { + anomaly = loadAnomalyById(id); + } else { + anomaly = loadAnomalyByName(name); + } + if(anomaly === null) { + res.status(404).send({ + code: 404, + message: 'Not found' + }); + return; + } + if(anomaly.status === undefined) { + throw new Error('No status for ' + name); + } + res.status(200).send({ status: anomaly.status }); + } catch(e) { + console.error(e); + // TODO: better send 404 when we know than isn`t found + res.status(500).send({ error: 'Can`t return anything' }); + } + +} + +async function getAnomaly(req, res) { + try { + let id = req.query.id; + let name = req.query.name; + + let anomaly:Anomaly; + if(id !== undefined) { + anomaly = loadAnomalyById(id); + } else { + anomaly = loadAnomalyByName(name.toLowerCase()); + } + if(anomaly === null) { + res.status(404).send({ + code: 404, + message: 'Not found' + }); + return; + } + + let payload = JSON.stringify({ + name: anomaly.name, + metric: anomaly.metric, + status: anomaly.status + }); + res.status(200).send(payload) + } catch(e) { + console.error(e); + // TODO: better send 404 when we know than isn`t found + res.status(500).send('Can`t get anything'); + } +} + +async function createAnomaly(req, res) { + try { + const metric:Metric = { + datasource: req.body.metric.datasource, + targets: saveTargets(req.body.metric.targets) + }; + + const anomaly:Anomaly = { + name: req.body.name, + panelUrl: req.body.panelUrl, + metric: metric, + status: 'learning', + last_prediction_time: 0, + next_id: 0 + }; + let anomalyId = insertAnomaly(anomaly); + if(anomalyId === null) { + res.status(403).send({ + code: 403, + message: 'Already exists' + }); + } + + let payload = JSON.stringify({ anomaly_id: anomalyId }) + res.status(200).send(payload); + + runLearning(anomalyId); + } catch(e) { + res.status(500).send({ + code: 500, + message: 'Internal error' + }); + } +} + +function deleteAnomaly(req, res) { + try { + let id = req.query.id; + let name = req.query.name; + + if(id !== undefined) { + removeAnomaly(id); + } else { + removeAnomaly(name.toLowerCase()); + } + + res.status(200).send({ + code: 200, + message: 'Success' + }); + } catch(e) { + res.status(500).send({ + code: 500, + message: 'Internal error' + }); + } +} + +export const router = express.Router(); + +router.get('/status', sendAnomalyTypeStatus); +router.get('/', getAnomaly); +router.post('/', createAnomaly); +router.delete('/', deleteAnomaly); diff --git a/server/src/routes/segments.ts b/server/src/routes/segments.ts new file mode 100644 index 0000000..6ffa755 --- /dev/null +++ b/server/src/routes/segments.ts @@ -0,0 +1,80 @@ +import * as express from 'express'; +import { + getLabeledSegments, + insertSegments, + removeSegments, +} from '../services/segments'; +import {runLearning} from '../services/analytics'; +import {Anomaly, AnomalyId, getAnomalyIdByName, loadAnomalyById} from '../services/anomalyType'; + + +async function sendSegments(req, res) { + try { + let anomalyId: AnomalyId = req.query.anomaly_id; + let anomaly:Anomaly = loadAnomalyById(anomalyId); + if(anomaly === null) { + anomalyId = getAnomalyIdByName(anomalyId); + } + + let lastSegmentId = req.query.last_segment; + let timeFrom = req.query.from; + let timeTo = req.query.to; + + let segments = getLabeledSegments(anomalyId); + + // Id filtering + if(lastSegmentId !== undefined) { + segments = segments.filter(el => el.id > lastSegmentId); + } + + // Time filtering + if(timeFrom !== undefined) { + segments = segments.filter(el => el.finish > timeFrom); + } + + if(timeTo !== undefined) { + segments = segments.filter(el => el.start < timeTo); + } + + let payload = JSON.stringify({ + segments + }); + res.status(200).send(payload); + } catch(e) { + res.status(500).send({ + code: 500, + message: 'Internal error' + }); + } +} + +async function updateSegments(req, res) { + try { + let segmentsUpdate = req.body; + + let anomalyId = segmentsUpdate.anomaly_id; + let anomalyName = segmentsUpdate.name; + + if(anomalyId === undefined) { + anomalyId = getAnomalyIdByName(anomalyName.toLowerCase()); + } + + let addedIds = insertSegments(anomalyId, segmentsUpdate.added_segments, true); + removeSegments(anomalyId, segmentsUpdate.removed_segments); + + let payload = JSON.stringify({ added_ids: addedIds }); + res.status(200).send(payload); + + runLearning(anomalyId); + } catch(e) { + res.status(500).send({ + code: 500, + message: 'Internal error' + }); + } +} + +export const router = express.Router(); + +router.get('/', sendSegments); +router.patch('/', updateSegments); diff --git a/server/src/services/alerts.ts b/server/src/services/alerts.ts new file mode 100644 index 0000000..55f177a --- /dev/null +++ b/server/src/services/alerts.ts @@ -0,0 +1,58 @@ +import { getJsonDataSync, writeJsonDataSync } from './json'; +import * as path from 'path'; +import { AnomalyId } from './anomalyType'; +import { ANOMALIES_PATH } from '../config'; +import { runPredict } from './analytics'; +import { sendNotification } from './notification'; +import { getLabeledSegments } from './segments'; + +function getAlertsAnomalies() : AnomalyId[] { + return getJsonDataSync(path.join(ANOMALIES_PATH, `alerts_anomalies.json`)); +} + +function saveAlertsAnomalies(anomalies: AnomalyId[]) { + return writeJsonDataSync(path.join(ANOMALIES_PATH, `alerts_anomalies.json`), anomalies); +} + +function processAlerts(anomalyId) { + let segments = getLabeledSegments(anomalyId); + + const currentTime = new Date().getTime(); + const activeAlert = activeAlerts.has(anomalyId); + let newActiveAlert = false; + + if(segments.length > 0) { + let lastSegment = segments[segments.length - 1]; + if(lastSegment.finish >= currentTime - alertTimeout) { + newActiveAlert = true; + } + } + + if(!activeAlert && newActiveAlert) { + activeAlerts.add(anomalyId); + sendNotification(anomalyId, true); + } else if(activeAlert && !newActiveAlert) { + activeAlerts.delete(anomalyId); + sendNotification(anomalyId, false); + } +} + +async function alertsTick() { + let alertsAnomalies = getAlertsAnomalies(); + for (let anomalyId of alertsAnomalies) { + try { + await runPredict(anomalyId); + processAlerts(anomalyId); + } catch (e) { + console.error(e); + } + } + setTimeout(alertsTick, 5000); +} + +const alertTimeout = 60000; // ms +const activeAlerts = new Set(); +setTimeout(alertsTick, 5000); + + +export { getAlertsAnomalies, saveAlertsAnomalies } diff --git a/server/src/services/analytics.ts b/server/src/services/analytics.ts new file mode 100644 index 0000000..1e7e18f --- /dev/null +++ b/server/src/services/analytics.ts @@ -0,0 +1,141 @@ +import { spawn } from 'child_process' +import { ANALYTICS_PATH } from '../config' +import { + Anomaly, + AnomalyId, getAnomalyTypeInfo, + loadAnomalyById, + setAnomalyPredictionTime, + setAnomalyStatus +} from './anomalyType' +import { getTarget } from './metrics'; +import { getLabeledSegments, insertSegments, removeSegments } from './segments'; +import { split, map, mapSync } from 'event-stream' + +const learnWorker = spawn('python3', ['worker.py'], { cwd: ANALYTICS_PATH }) +learnWorker.stdout.pipe(split()) + .pipe( + mapSync(function(line){ + console.log(line) + onMessage(line) + }) + ); + +learnWorker.stderr.on('data', data => console.error(`worker stderr: ${data}`)); + +const taskMap = {}; +let nextTaskId = 0; + +function onMessage(data) { + let response = JSON.parse(data); + let taskId = response.__task_id; + // let anomalyName = response.anomaly_name; + // let task = response.task; + let status = response.status; + + if(status === 'success' || status === 'failed') { + if(taskId in taskMap) { + let resolver = taskMap[taskId]; + resolver(response); + delete taskMap[taskId]; + } + } +} + +function runTask(task) : Promise { + let anomaly:Anomaly = loadAnomalyById(task.anomaly_id); + task.metric = { + datasource: anomaly.metric.datasource, + targets: anomaly.metric.targets.map(t => getTarget(t)) + }; + + task.__task_id = nextTaskId++; + let command = JSON.stringify(task) + learnWorker.stdin.write(`${command}\n`); + return new Promise((resolve, reject) => { + taskMap[task.__task_id] = resolve + }) +} + +async function runLearning(anomalyId:AnomalyId) { + let segments = getLabeledSegments(anomalyId); + setAnomalyStatus(anomalyId, 'learning'); + let anomaly:Anomaly = loadAnomalyById(anomalyId); + let analyticsType = "anomalies"; + let preset = undefined; + if (anomaly.name.includes("jumps")) { + analyticsType = "patterns"; + preset = "steps" + } + if (anomaly.name.includes("cliffs") || anomaly.name.includes("drops")) { + analyticsType = "patterns"; + preset = "cliffs" + } + if (anomaly.name.includes("peaks")) { + analyticsType = "patterns"; + preset = "peaks" + } + let task = { + type: 'learn', + anomaly_id: anomalyId, + analytics_type: analyticsType, + preset, + segments: segments + }; + + let result = await runTask(task); + + if (result.status === 'success') { + setAnomalyStatus(anomalyId, 'ready'); + insertSegments(anomalyId, result.segments, false); + setAnomalyPredictionTime(anomalyId, result.last_prediction_time); + } else { + setAnomalyStatus(anomalyId, 'failed'); + } +} + +async function runPredict(anomalyId:AnomalyId) { + let anomaly:Anomaly = loadAnomalyById(anomalyId); + let analyticsType = "anomalies"; + let preset = undefined; + if (anomaly.name.includes("jump")) { + analyticsType = "patterns"; + preset = "steps" + } + if (anomaly.name.includes("cliffs") || anomaly.name.includes("drops")) { + analyticsType = "patterns"; + preset = "cliffs" + } + if (anomaly.name.includes("peaks")) { + analyticsType = "patterns"; + preset = "peaks" + } + let task = { + type: 'predict', + anomaly_id: anomalyId, + analytics_type: analyticsType, + preset, + last_prediction_time: anomaly.last_prediction_time + }; + let result = await runTask(task); + + if(result.status === 'failed') { + return []; + } + // Merging segments + let segments = getLabeledSegments(anomalyId); + if(segments.length > 0 && result.segments.length > 0) { + let lastOldSegment = segments[segments.length - 1]; + let firstNewSegment = result.segments[0]; + + if(firstNewSegment.start <= lastOldSegment.finish) { + result.segments[0].start = lastOldSegment.start; + removeSegments(anomalyId, [lastOldSegment.id]); + } + } + + insertSegments(anomalyId, result.segments, false); + setAnomalyPredictionTime(anomalyId, result.last_prediction_time); + return result.segments; +} + +export { runLearning, runPredict } diff --git a/server/src/services/anomalyType.ts b/server/src/services/anomalyType.ts new file mode 100644 index 0000000..c478344 --- /dev/null +++ b/server/src/services/anomalyType.ts @@ -0,0 +1,117 @@ +import * as path from 'path' +import { getJsonDataSync, writeJsonDataSync } from './json' +import { ANOMALIES_PATH } from '../config' +import * as fs from 'fs' +import * as crypto from 'crypto'; + +export type Metric = { + datasource: string, + targets: string[] +} + +export type Anomaly = { + name: string, + + panelUrl: string, + + metric: Metric, + status: string, + + last_prediction_time: number, + next_id: number +} + +export type AnomalyId = string; + +let anomaliesNameToIdMap = {}; + +function loadAnomaliesMap() { + let filename = path.join(ANOMALIES_PATH, `all_anomalies.json`); + anomaliesNameToIdMap = getJsonDataSync(filename); +} + +function saveAnomaliesMap() { + let filename = path.join(ANOMALIES_PATH, `all_anomalies.json`); + writeJsonDataSync(filename, anomaliesNameToIdMap); +} + +function getAnomalyIdByName(anomalyName:string) : AnomalyId { + loadAnomaliesMap(); + anomalyName = anomalyName.toLowerCase(); + if(anomalyName in anomaliesNameToIdMap) { + return anomaliesNameToIdMap[anomalyName]; + } + return anomalyName; +} + +function insertAnomaly(anomaly: Anomaly) : AnomalyId { + const hashString = anomaly.name + (new Date()).toString(); + const anomalyId:AnomalyId = crypto.createHash('md5').update(hashString).digest('hex'); + anomaliesNameToIdMap[anomaly.name] = anomalyId; + saveAnomaliesMap(); + // return anomalyId + // const anomalyId:AnomalyId = anomaly.name; + let filename = path.join(ANOMALIES_PATH, `${anomalyId}.json`); + if(fs.existsSync(filename)) { + return null; + } + saveAnomaly(anomalyId, anomaly); + return anomalyId; +} + +function removeAnomaly(anomalyId:AnomalyId) { + let filename = path.join(ANOMALIES_PATH, `${anomalyId}.json`); + fs.unlinkSync(filename); +} + +function saveAnomaly(anomalyId: AnomalyId, anomaly: Anomaly) { + let filename = path.join(ANOMALIES_PATH, `${anomalyId}.json`); + return writeJsonDataSync(filename, anomaly); +} + +function loadAnomalyById(anomalyId: AnomalyId) : Anomaly { + let filename = path.join(ANOMALIES_PATH, `${anomalyId}.json`); + if(!fs.existsSync(filename)) { + return null; + } + return getJsonDataSync(filename); +} + +function loadAnomalyByName(anomalyName: string) : Anomaly { + let anomalyId = getAnomalyIdByName(anomalyName); + return loadAnomalyById(anomalyId); +} + +function saveAnomalyTypeInfo(info) { + console.log('Saving'); + let filename = path.join(ANOMALIES_PATH, `${info.name}.json`); + if(info.next_id === undefined) { + info.next_id = 0; + } + if(info.last_prediction_time === undefined) { + info.last_prediction_time = 0; + } + + return writeJsonDataSync(filename, info); +} + +function getAnomalyTypeInfo(name) { + return getJsonDataSync(path.join(ANOMALIES_PATH, `${name}.json`)); +} + +function setAnomalyStatus(anomalyId:AnomalyId, status:string) { + let info = loadAnomalyById(anomalyId); + info.status = status; + saveAnomaly(anomalyId, info); +} + +function setAnomalyPredictionTime(anomalyId:AnomalyId, lastPredictionTime:number) { + let info = loadAnomalyById(anomalyId); + info.last_prediction_time = lastPredictionTime; + saveAnomaly(anomalyId, info); +} + +export { + saveAnomaly, loadAnomalyById, loadAnomalyByName, insertAnomaly, removeAnomaly, saveAnomalyTypeInfo, + getAnomalyTypeInfo, getAnomalyIdByName, setAnomalyStatus, setAnomalyPredictionTime +} diff --git a/server/src/services/json.ts b/server/src/services/json.ts new file mode 100644 index 0000000..0390661 --- /dev/null +++ b/server/src/services/json.ts @@ -0,0 +1,55 @@ +import * as fs from 'fs'; + +async function getJsonData(filename: string): Promise { + var data = await new Promise((resolve, reject) => { + fs.readFile(filename, 'utf8', (err, data) => { + if(err) { + console.error(err); + reject('Can`t read file'); + } else { + resolve(data); + } + }); + }); + + try { + return JSON.parse(data); + } catch(e) { + console.error(e); + throw new Error('Wrong file format'); + } +} + +function writeJsonData(filename: string, data: Object) { + return new Promise((resolve, reject) => { + fs.writeFile(filename, JSON.stringify(data), 'utf8', (err) => { + if(err) { + console.error(err); + reject('Cat`t write file'); + } else { + resolve(); + } + }); + }) +} + +function getJsonDataSync(filename: string) { + let data = fs.readFileSync(filename, 'utf8'); + try { + return JSON.parse(data); + } catch(e) { + console.error(e); + throw new Error('Wrong file format'); + } +} + +function writeJsonDataSync(filename: string, data: Object) { + fs.writeFileSync(filename, JSON.stringify(data)); +} + +export { + getJsonData, + writeJsonData, + getJsonDataSync, + writeJsonDataSync +} diff --git a/server/src/services/metrics.ts b/server/src/services/metrics.ts new file mode 100644 index 0000000..52ce444 --- /dev/null +++ b/server/src/services/metrics.ts @@ -0,0 +1,27 @@ +import * as path from 'path'; +import { getJsonDataSync, writeJsonDataSync } from './json'; +import { METRICS_PATH } from '../config'; +import * as crypto from 'crypto'; + +function saveTargets(targets) { + let metrics = []; + for (let target of targets) { + metrics.push(saveTarget(target)); + } + return metrics; +} + +function saveTarget(target) { + //const md5 = crypto.createHash('md5') + const targetId = crypto.createHash('md5').update(JSON.stringify(target)).digest('hex'); + let filename = path.join(METRICS_PATH, `${targetId}.json`); + writeJsonDataSync(filename, target); + return targetId; +} + +function getTarget(targetId) { + let filename = path.join(METRICS_PATH, `${targetId}.json`); + return getJsonDataSync(filename); +} + +export { saveTargets, getTarget } diff --git a/server/src/services/notification.ts b/server/src/services/notification.ts new file mode 100644 index 0000000..d6fd4c3 --- /dev/null +++ b/server/src/services/notification.ts @@ -0,0 +1,140 @@ +//import * as Telegraf from 'telegraf' +import * as path from 'path'; +import { DATA_PATH } from '../config'; +import { getJsonDataSync, writeJsonDataSync } from './json'; +import { AnomalyId } from './anomalyType'; + + +type SubscriberId = string; +type SubscribersMap = Map< AnomalyId, SubscriberId[] >; + +type BotConfig = { + token: string, + subscriptions: SubscribersMap +}; + +function sendNotification(anomalyName, active) { + console.log('Notification ' + anomalyName); + if(anomalyName in botConfig.subscriptions) { + let notificationMessage; + if(active) { + notificationMessage = 'Alert! Anomaly type ' + anomalyName; + } else { + notificationMessage = 'Ok! Anomaly type ' + anomalyName; + } + + for (let SubscriberId of botConfig.subscriptions[anomalyName]) { + bot.telegram.sendMessage(SubscriberId, notificationMessage); + } + } +} + +function loadBotConfig() : BotConfig { + let filename = path.join(DATA_PATH, `bot_config.json`); + let jsonData; + try { + jsonData = getJsonDataSync(filename); + } catch(e) { + console.error(e.message); + jsonData = []; + } + return jsonData; +} + +function saveBotConfig(botConfig: BotConfig) { + let filename = path.join(DATA_PATH, `bot_config.json`); + try { + writeJsonDataSync(filename, botConfig); + } catch(e) { + console.error(e.message); + } +} + +const commandArgs = (ctx, next) => { + try { + if(ctx.updateType === 'message') { + const text = ctx.update.message.text; + if(text !== undefined && text.startsWith('/')) { + const match = text.match(/^\/([^\s]+)\s?(.+)?/); + let args = []; + let command; + if(match !== null) { + if(match[1]) { + command = match[1]; + } + if(match[2]) { + args = match[2].split(' '); + } + } + ctx.state.command = { + raw: text, + command, + args, + }; + } + } + return next(ctx); + } catch (e) { + + } +}; + +function addNotification(ctx) { + console.log('addNotification') + let command = ctx.state.command; + let chatId = ctx.chat.id; + if(command.args.length > 0) { + for (let anomalyName of command.args) { + if(!(anomalyName in botConfig.subscriptions)) { + botConfig.subscriptions[anomalyName] = [] + } + if(botConfig.subscriptions[anomalyName].includes(chatId)) { + return ctx.reply('You are already subscribed on alerts from anomaly ' + command.args) + } else { + botConfig.subscriptions[anomalyName].push(chatId); + saveBotConfig(botConfig); + } + } + return ctx.reply('You have been successfully subscribed on alerts from anomaly ' + command.args) + } else { + return ctx.reply('You should use syntax: \/addNotification ') + } +} + +function removeNotification(ctx) { + let command = ctx.state.command; + let chatId = ctx.chat.id; + if(command.args.length > 0) { + for (let anomalyName of command.args) { + if(anomalyName in botConfig.subscriptions) { + botConfig.subscriptions[anomalyName] = botConfig.subscriptions[anomalyName].filter(el => el !== chatId); + saveBotConfig(botConfig); + } + } + return ctx.reply('You have been successfully unsubscribed from alerts from ' + command.args); + } else { + return ctx.reply('You should use syntax: \/removeNotification '); + } +} + +const Telegraf = require('telegraf'); +let botConfig: BotConfig; +let bot; + +function tgBotInit() { + try { + botConfig = loadBotConfig(); + bot = new Telegraf(botConfig.token); + + bot.use(commandArgs); + + bot.command('addNotification', addNotification); + bot.command('removeNotification', removeNotification); + + bot.startPolling(); + } catch(e) { + // TODO: handle exception + } +} + +export { sendNotification, tgBotInit } diff --git a/server/src/services/segments.ts b/server/src/services/segments.ts new file mode 100644 index 0000000..6f8ed8c --- /dev/null +++ b/server/src/services/segments.ts @@ -0,0 +1,75 @@ +import * as path from 'path'; +import { getJsonDataSync, writeJsonDataSync } from './json'; +import { SEGMENTS_PATH } from '../config'; +import { AnomalyId, loadAnomalyById, saveAnomaly } from './anomalyType'; + +function getLabeledSegments(anomalyId: AnomalyId) { + let filename = path.join(SEGMENTS_PATH, `${anomalyId}_labeled.json`); + + let segments = []; + try { + segments = getJsonDataSync(filename); + for (let segment of segments) { + if (segment.labeled === undefined) { + segment.labeled = false; + } + } + } catch (e) { + console.error(e.message); + } + return segments; +} + +function getPredictedSegments(anomalyId: AnomalyId) { + let filename = path.join(SEGMENTS_PATH, `${anomalyId}_segments.json`); + + let jsonData; + try { + jsonData = getJsonDataSync(filename); + } catch(e) { + console.error(e.message); + jsonData = []; + } + return jsonData; +} + +function saveSegments(anomalyId: AnomalyId, segments) { + let filename = path.join(SEGMENTS_PATH, `${anomalyId}_labeled.json`); + + try { + return writeJsonDataSync(filename, segments); + } catch(e) { + console.error(e.message); + throw new Error('Can`t write to db'); + } +} + +function insertSegments(anomalyId: AnomalyId, addedSegments, labeled:boolean) { + // Set status + let info = loadAnomalyById(anomalyId); + let segments = getLabeledSegments(anomalyId); + + let nextId = info.next_id; + let addedIds = [] + for (let segment of addedSegments) { + segment.id = nextId; + segment.labeled = labeled; + addedIds.push(nextId); + nextId++; + segments.push(segment); + } + info.next_id = nextId; + saveSegments(anomalyId, segments); + saveAnomaly(anomalyId, info); + return addedIds; +} + +function removeSegments(anomalyId: AnomalyId, removedSegments) { + let segments = getLabeledSegments(anomalyId); + for (let segmentId of removedSegments) { + segments = segments.filter(el => el.id !== segmentId); + } + saveSegments(anomalyId, segments); +} + +export { getLabeledSegments, getPredictedSegments, saveSegments, insertSegments, removeSegments } diff --git a/server/tsconfig.json b/server/tsconfig.json new file mode 100644 index 0000000..987f1c7 --- /dev/null +++ b/server/tsconfig.json @@ -0,0 +1,10 @@ +{ + "compilerOptions": { + "outDir": "./dist/", + "sourceMap": true, + "noImplicitAny": false, + "module": "commonjs", + "target": "es2015", + "allowJs": true + } +} diff --git a/src/.gitignore b/src/.gitignore new file mode 100644 index 0000000..a62c4bc --- /dev/null +++ b/src/.gitignore @@ -0,0 +1,11 @@ +anomalies/ +segments/ +datasets/ +datasources/ +models/ +metrics/ +__pycache__/ +*.pyc +*.txt +*.log +tasks.csv diff --git a/src/add_anomaly.py b/src/add_anomaly.py new file mode 100644 index 0000000..1020700 --- /dev/null +++ b/src/add_anomaly.py @@ -0,0 +1,5 @@ +from worker import worker + +if __name__ == "__main__": + w = worker() + w.do_task({"type": "learn", "anomaly_name": "cpu_utilization_supervised", "segments": []}) \ No newline at end of file diff --git a/src/anomaly_model.py b/src/anomaly_model.py new file mode 100644 index 0000000..bdd21b1 --- /dev/null +++ b/src/anomaly_model.py @@ -0,0 +1,157 @@ +import os.path +from data_provider import DataProvider +from data_preprocessor import data_preprocessor +import json +import pandas as pd +import logging + +datasource_folder = "datasources/" +dataset_folder = "datasets/" +anomalies_folder = "anomalies/" +models_folder = "models/" +metrics_folder = "metrics/" +logger = logging.getLogger('analytic_toolset') + + +def anomalies_to_timestamp(anomalies): + for anomaly in anomalies: + anomaly['start'] = int(anomaly['start'].timestamp() * 1000) + anomaly['finish'] = int(anomaly['finish'].timestamp() * 1000) + return anomalies + + +class AnomalyModel: + + def __init__(self, anomaly_name): + self.anomaly_name = anomaly_name + self.load_anomaly_config() + + datasource = self.anomaly_config['metric']['datasource'] + metric_name = self.anomaly_config['metric']['targets'][0] + + dbconfig_filename = os.path.join(datasource_folder, datasource + ".json") + target_filename = os.path.join(metrics_folder, metric_name + ".json") + + dataset_filename = os.path.join(dataset_folder, metric_name + ".csv") + augmented_path = os.path.join(dataset_folder, metric_name + "_augmented.csv") + + with open(dbconfig_filename, 'r') as config_file: + dbconfig = json.load(config_file) + + with open(target_filename, 'r') as file: + target = json.load(file) + + self.data_prov = DataProvider(dbconfig, target, dataset_filename) + self.preprocessor = data_preprocessor(self.data_prov, augmented_path) + self.model = None + + self.__load_model() + + def anomalies_box(self, anomalies): + max_time = 0 + min_time = float("inf") + for anomaly in anomalies: + max_time = max(max_time, anomaly['finish']) + min_time = min(min_time, anomaly['start']) + min_time = pd.to_datetime(min_time, unit='ms') + max_time = pd.to_datetime(max_time, unit='ms') + return min_time, max_time + + def learn(self, anomalies): + logger.info("Start to learn for anomaly_name='%s'" % self.anomaly_name) + + confidence = 0.02 + dataframe = self.data_prov.get_dataframe() + start_index, stop_index = 0, len(dataframe) + if len(anomalies) > 0: + confidence = 0.0 + min_time, max_time = self.anomalies_box(anomalies) + start_index = dataframe[dataframe['timestamp'] >= min_time].index[0] + stop_index = dataframe[dataframe['timestamp'] > max_time].index[0] + start_index, stop_index = self.preprocessor.expand_indexes(start_index, stop_index) + dataframe = dataframe[start_index:stop_index] + + train_augmented = self.preprocessor.get_augmented_data( + start_index, + stop_index, + anomalies + ) + + self.model = self.create_algorithm() + self.model.fit(train_augmented, confidence) + if len(anomalies) > 0: + last_dataframe_time = dataframe.iloc[- 1]['timestamp'] + last_prediction_time = int(last_dataframe_time.timestamp() * 1000) + else: + last_prediction_time = 0 + + self.__save_model() + logger.info("Learning is finished for anomaly_name='%s'" % self.anomaly_name) + return last_prediction_time + + def predict(self, last_prediction_time): + logger.info("Start to predict for anomaly type='%s'" % self.anomaly_name) + last_prediction_time = pd.to_datetime(last_prediction_time, unit='ms') + + start_index = self.data_prov.get_upper_bound(last_prediction_time) + stop_index = self.data_prov.size() + + # last_prediction_time = pd.to_datetime(last_prediction_time, unit='ms') + # dataframe = dataframe[dataframe['timestamp'] > last_prediction_time] + last_prediction_time = int(last_prediction_time.timestamp() * 1000) + + predicted_anomalies = [] + if start_index < stop_index: + max_chunk_size = 50000 + predicted = pd.Series() + for index in range(start_index, stop_index, max_chunk_size): + chunk_start = index + chunk_finish = min(index + max_chunk_size, stop_index) + predict_augmented = self.preprocessor.get_augmented_data(chunk_start, chunk_finish) + + assert(len(predict_augmented) == chunk_finish - chunk_start) + + predicted_current = self.model.predict(predict_augmented) + predicted = pd.concat([predicted, predicted_current]) + predicted_anomalies = self.preprocessor.inverse_transform_anomalies(predicted) + + last_row = self.data_prov.get_data_range(stop_index - 1, stop_index) + + last_dataframe_time = last_row.iloc[0]['timestamp'] + predicted_anomalies = anomalies_to_timestamp(predicted_anomalies) + last_prediction_time = int(last_dataframe_time.timestamp() * 1000) + + logger.info("Predicting is finished for anomaly type='%s'" % self.anomaly_name) + return predicted_anomalies, last_prediction_time + + def synchronize_data(self): + self.data_prov.synchronize() + self.preprocessor.set_data_provider(self.data_prov) + self.preprocessor.synchronize() + + def load_anomaly_config(self): + with open(os.path.join(anomalies_folder, self.anomaly_name + ".json"), 'r') as config_file: + self.anomaly_config = json.load(config_file) + + def get_anomalies(self): + labeled_anomalies_file = os.path.join(anomalies_folder, self.anomaly_name + "_labeled.json") + if not os.path.exists(labeled_anomalies_file): + return [] + with open(labeled_anomalies_file) as file: + return json.load(file) + + def create_algorithm(self): + from supervised_algorithm import supervised_algorithm + return supervised_algorithm() + + def __save_model(self): + logger.info("Save model '%s'" % self.anomaly_name) + model_filename = os.path.join(models_folder, self.anomaly_name + ".m") + self.model.save(model_filename) + + def __load_model(self): + logger.info("Load model '%s'" % self.anomaly_name) + model_filename = os.path.join(models_folder, self.anomaly_name + ".m") + if os.path.exists(model_filename): + self.model = self.create_algorithm() + self.model.load(model_filename) diff --git a/src/data_preprocessor.py b/src/data_preprocessor.py new file mode 100644 index 0000000..4c6eb91 --- /dev/null +++ b/src/data_preprocessor.py @@ -0,0 +1,255 @@ +import os.path +import pandas as pd +import numpy as np +import math +import time + +from tsfresh.transformers.feature_augmenter import FeatureAugmenter +from tsfresh.feature_extraction.settings import from_columns +from pytz import timezone + + +class data_preprocessor: + # augmented = None + frame_size = 16 + calc_features = [ + # "value__agg_linear_trend__f_agg_\"max\"__chunk_len_5__attr_\"intercept\"", + # "value__cwt_coefficients__widths_(2, 5, 10, 20)__coeff_12__w_20", + # "value__cwt_coefficients__widths_(2, 5, 10, 20)__coeff_13__w_5", + # "value__cwt_coefficients__widths_(2, 5, 10, 20)__coeff_2__w_10", + # "value__cwt_coefficients__widths_(2, 5, 10, 20)__coeff_2__w_20", + # "value__cwt_coefficients__widths_(2, 5, 10, 20)__coeff_8__w_20", + # "value__fft_coefficient__coeff_3__attr_\"abs\"", + "time_of_day_column_x", + "time_of_day_column_y", + "value__abs_energy", + "value__absolute_sum_of_changes", + "value__sum_of_reoccurring_data_points", + ] + time_features = [ + 'time_of_day_column_x', + 'time_of_day_column_y' + ] + chunk_size = 50000 + + def __init__(self, data_provider, augmented_path): + self.data_provider = data_provider + self.augmented_path = augmented_path + self.last_chunk_index = 0 + self.total_size = 0 + self.__init_chunks() + self.synchronize() + + def set_data_provider(self, data_provider): + self.data_provider = data_provider + + def synchronize(self): + start_frame = self.total_size + stop_frame = self.data_provider.size() + + max_chunk_size = 30000 + for frame in range(start_frame, stop_frame, max_chunk_size): + data = self.__get_source_frames(frame, min(stop_frame, frame + max_chunk_size)) + + if len(data) == 0: + return + + append_augmented = self.__extract_features(data, self.calc_features) + self.__append_data(append_augmented) + + def expand_indexes(self, start_index, stop_index): + return start_index, stop_index + + def get_augmented_data(self, start_index, stop_index, anomalies=[]): + start_frame = start_index + stop_frame = stop_index + augmented = self.__get_data(start_frame, stop_frame) + + if len(anomalies) > 0: + anomalies_indexes = self.transform_anomalies(anomalies) + augmented = augmented.drop(anomalies_indexes) + + return augmented + + def transform_anomalies(self, anomalies): + anomaly_index = None + dataframe = self.data_provider.get_dataframe(None) + for anomaly in anomalies: + start_time = pd.to_datetime(anomaly['start'], unit='ms') + finish_time = pd.to_datetime(anomaly['finish'], unit='ms') + current_index = (dataframe['timestamp'] >= start_time) & (dataframe['timestamp'] <= finish_time) + if anomaly_index is not None: + anomaly_index = (anomaly_index | current_index) + else: + anomaly_index = current_index + + rows = dataframe[anomaly_index] + # indexes = np.floor_divide(rows.index, self.frame_size) + indexes = np.unique(rows.index) + return indexes + + def inverse_transform_anomalies(self, prediction): + anomalies = [] + cur_anomaly = None + source_dataframe = self.data_provider.get_dataframe(None) + for i in prediction.index: + if prediction[i]: + start_frame_index = max(0, i - self.frame_size + 1) + finish_frame_index = i + start = source_dataframe['timestamp'][start_frame_index] + finish = source_dataframe['timestamp'][finish_frame_index] + if cur_anomaly is None: + if len(anomalies) > 0 and start <= anomalies[len(anomalies) - 1]['finish']: + cur_anomaly = anomalies[len(anomalies) - 1] + anomalies.pop() + else: + cur_anomaly = {'start': start, 'finish': finish} + cur_anomaly['finish'] = finish + elif cur_anomaly is not None: + anomalies.append(cur_anomaly) + cur_anomaly = None + + if cur_anomaly: + anomalies.append(cur_anomaly) + return anomalies + + def __get_data(self, start_index, stop_index): + result = pd.DataFrame() + start_chunk = start_index // self.chunk_size + finish_chunk = stop_index // self.chunk_size + for chunk_num in range(start_chunk, finish_chunk + 1): + chunk = self.__load_chunk(chunk_num) + if chunk_num == finish_chunk: + chunk = chunk[:stop_index % self.chunk_size] + if chunk_num == start_chunk: + chunk = chunk[start_index % self.chunk_size:] + result = pd.concat([result, chunk]) + return result + + def __init_chunks(self): + chunk_index = 0 + self.last_chunk_index = 0 + while True: + filename = self.augmented_path + if chunk_index > 0: + filename += "." + str(chunk_index) + if os.path.exists(filename): + self.last_chunk_index = chunk_index + else: + break + chunk_index += 1 + self.total_size = self.last_chunk_index * self.chunk_size + last_chunk = self.__load_chunk(self.last_chunk_index) + self.total_size += len(last_chunk) + + def __append_data(self, dataframe): + while len(dataframe) > 0: + chunk = self.__load_chunk(self.last_chunk_index) + rows_count = min(self.chunk_size - len(chunk), len(dataframe)) + + rows = dataframe.iloc[0:rows_count] + self.__save_chunk(self.last_chunk_index, rows) + self.total_size += rows_count + + dataframe = dataframe[rows_count:] + if len(dataframe) > 0: + self.last_chunk_index += 1 + + def __load_chunk(self, index): + filename = self.augmented_path + if index > 0: + filename += "." + str(index) + + if os.path.exists(filename): + chunk = pd.read_csv(filename) + frame_index = np.arange(index * self.chunk_size, index * self.chunk_size + len(chunk)) + chunk = chunk.set_index(frame_index) + return chunk + return pd.DataFrame() + + def __save_chunk(self, index, dataframe): + filename = self.augmented_path + if index > 0: + filename += "." + str(index) + + if os.path.exists(filename): + dataframe.to_csv(filename, mode='a', index=False, header=False) + else: + dataframe.to_csv(filename, mode='w', index=False, header=True) + + def __get_source_frames(self, start_frame, stop_frame): + start_index = start_frame + stop_index = stop_frame + + # frame = self.source_dataframe[start_index:stop_index] + # mat = frame.as_matrix() + + source_dataframe = self.data_provider.get_data_range(max(start_index - self.frame_size + 1, 0), stop_index) + + dataframe = None + for i in range(start_index, stop_index): + mini = max(0, i - self.frame_size + 1) + frame = source_dataframe.loc[mini:i + 1].copy() + frame['id'] = i + if dataframe is None: + dataframe = frame + else: + dataframe = dataframe.append(frame, ignore_index=True) + + #dataframe = self.source_dataframe[start_index:stop_index].copy() + #dataframe['id'] = np.floor_divide(dataframe.index, self.frame_size) + dataframe.reset_index(drop=True, inplace=True) + return dataframe + + def __extract_features(self, data, features=None): + start_frame = data['id'][0] + stop_frame = data['id'][len(data)-1] + 1 + augmented = pd.DataFrame(index=np.arange(start_frame, stop_frame)) + + # tsfresh features + tsfresh_features = None + if features is not None: + tsfresh_features = set(features) - set(self.time_features) + + augmented = self.__extract_tfresh_features(data, augmented, tsfresh_features) + + # time features + augmented = self.__extract_time_features(data, augmented, features) + return augmented + + def __extract_tfresh_features(self, data, augmented, features): + relevant_extraction_settings = None + if features is not None: + augmented_features = set(features) + relevant_extraction_settings = from_columns(augmented_features) + + #impute_function = partial(impute_dataframe_range, col_to_max=self.col_to_max, + # col_to_min=self.col_to_min, col_to_median=self.col_to_median) + + feature_extractor = FeatureAugmenter( + kind_to_fc_parameters=relevant_extraction_settings, + column_id='id', + column_sort='timestamp') + feature_extractor.set_timeseries_container(data) + + return feature_extractor.transform(augmented) + + def __extract_time_features(self, data, augmented, features): + if features is None: + features = self.time_features + + seconds = np.zeros(len(augmented)) + first_id = data['id'][0] + + for i in range(len(data)): + id = data['id'][i] - first_id + timeobj = data['timestamp'][i].time() + seconds[id] = timeobj.second + 60 * (timeobj.minute + 60 * timeobj.hour) + + norm_seconds = 2 * math.pi * seconds / (24 * 3600) + + if 'time_of_day_column_x' in features: + augmented['time_of_day_column_x'] = np.cos(norm_seconds) + if 'time_of_day_column_y' in features: + augmented['time_of_day_column_y'] = np.sin(norm_seconds) + return augmented \ No newline at end of file diff --git a/src/data_provider.py b/src/data_provider.py new file mode 100644 index 0000000..63409a2 --- /dev/null +++ b/src/data_provider.py @@ -0,0 +1,220 @@ +from influxdb import InfluxDBClient +import pandas as pd +import os.path +import numpy as np + + +class DataProvider: + chunk_size = 50000 + + def __init__(self, dbconfig, target, data_filename): + self.dbconfig = dbconfig + self.target = target + self.data_filename = data_filename + self.last_time = None + self.total_size = 0 + self.last_chunk_index = 0 + self.chunk_last_times = {} + self.__init_chunks() + self.synchronize() + + def get_dataframe(self, after_time=None): + result = pd.DataFrame() + for chunk_index, last_chunk_time in self.chunk_last_times.items(): + if after_time is None or after_time <= last_chunk_time: + chunk = self.__load_chunk(chunk_index) + if after_time is not None: + chunk = chunk[chunk['timestamp'] > after_time] + result = pd.concat([result, chunk]) + return result + + def get_upper_bound(self, after_time): + for chunk_index, last_chunk_time in self.chunk_last_times.items(): + if after_time < last_chunk_time: + chunk = self.__load_chunk(chunk_index) + chunk = chunk[chunk['timestamp'] > after_time] + return chunk.index[0] + return self.size() + + def size(self): + return self.total_size + + def get_data_range(self, start_index, stop_index=None): + return self.__get_data(start_index, stop_index) + + def transform_anomalies(self, anomalies): + result = [] + if len(anomalies) == 0: + return result + dataframe = self.get_dataframe(None) + for anomaly in anomalies: + start_time = pd.to_datetime(anomaly['start']-1, unit='ms') + finish_time = pd.to_datetime(anomaly['finish']+1, unit='ms') + current_index = (dataframe['timestamp'] >= start_time) & (dataframe['timestamp'] <= finish_time) + anomaly_frame = dataframe[current_index] + cur_anomaly = { + 'start': anomaly_frame.index[0], + 'finish': anomaly_frame.index[len(anomaly_frame) - 1], + 'labeled': anomaly['labeled'] + } + result.append(cur_anomaly) + + return result + + def inverse_transform_indexes(self, indexes): + if len(indexes) == 0: + return [] + dataframe = self.get_data_range(indexes[0][0], indexes[-1][1] + 1) + + return [(dataframe['timestamp'][i1], dataframe['timestamp'][i2]) for (i1, i2) in indexes] + + def synchronize(self): + # last_time = None + # if len(self.dataframe/) > 0: + # last_time = self.dataframe['time'][len(self.dataframe)-1] + append_dataframe = self.load_from_db(self.last_time) + self.__append_data(append_dataframe) + # append_dataframe + # append_dataframe.to_csv(self.data_filename, mode='a', index=False, header=False) + # self.dataframe = pd.concat([self.dataframe, append_dataframe], ignore_index=True) + + # def load(self): + # if os.path.exists(self.data_filename): + # self.dataframe = pd.read_csv(self.data_filename, parse_dates=[0]) + # self.synchronize() + # else: + # append_dataframe = self.load_from_db() + # self.__append_data(append_dataframe) + # #self.dataframe.to_csv(self.data_filename, index=False, header=True) + + def custom_query(self, after_time): + query = self.target["query"] + timeFilter = "TRUE" + if after_time is not None: + timeFilter = "time > '%s'" % (str(after_time)) + query = query.replace("$timeFilter", timeFilter) + return query + + def load_from_db(self, after_time=None): + """Instantiate a connection to the InfluxDB.""" + host = self.dbconfig['host'] + port = self.dbconfig['port'] + user = self.dbconfig['user'] + password = self.dbconfig['password'] + dbname = self.dbconfig['dbname'] + + client = InfluxDBClient(host, port, user, password, dbname) + # query = 'select k0, k1, k2 from vals;' + + measurement = self.target['measurement'] + select = self.target['select'] + tags = self.target['tags'] + + if "query" in self.target: + query = self.custom_query(after_time) + else: + select_values = select[0][0]['params'] + escaped_select_values = ["\"" + value + "\"" for value in select_values] + + conditions_entries = [] + if len(tags) > 0: + for tag in tags: + conditions_entries.append("(\"" + tag['key'] + "\"" + tag['operator'] + "'" + tag['value'] + "')") + if after_time: + conditions_entries.append("time > '%s'" % (str(after_time))) + + condition = "" + if len(conditions_entries) > 0: + condition = " where " + " AND ".join(conditions_entries) + + query = "select %s from \"%s\"%s;" % (",".join(escaped_select_values), measurement, condition) + + result = client.query(query, chunked=True, chunk_size=10000) + dataframe = pd.DataFrame(result.get_points()) + if len(dataframe) > 0: + cols = dataframe.columns.tolist() + cols.remove('time') + cols = ['time'] + cols + dataframe = dataframe[cols] + + dataframe['time'] = pd.to_datetime(dataframe['time']) + dataframe = dataframe.dropna(axis=0, how='any') + + return dataframe + + def __init_chunks(self): + chunk_index = 0 + self.last_chunk_index = 0 + while True: + filename = self.data_filename + if chunk_index > 0: + filename += "." + str(chunk_index) + if os.path.exists(filename): + self.last_chunk_index = chunk_index + chunk = self.__load_chunk(chunk_index) + chunk_last_time = chunk.iloc[len(chunk) - 1]['timestamp'] + self.chunk_last_times[chunk_index] = chunk_last_time + self.last_time = chunk_last_time + else: + break + chunk_index += 1 + self.total_size = self.last_chunk_index * self.chunk_size + last_chunk = self.__load_chunk(self.last_chunk_index) + self.total_size += len(last_chunk) + + def __load_chunk(self, index): + filename = self.data_filename + if index > 0: + filename += "." + str(index) + + if os.path.exists(filename): + chunk = pd.read_csv(filename, parse_dates=[0]) + frame_index = np.arange(index * self.chunk_size, index * self.chunk_size + len(chunk)) + chunk = chunk.set_index(frame_index) + return chunk.rename(columns={chunk.columns[0]: "timestamp", chunk.columns[1]: "value"}) + return pd.DataFrame() + + def __save_chunk(self, index, dataframe): + filename = self.data_filename + if index > 0: + filename += "." + str(index) + + chunk_last_time = dataframe.iloc[len(dataframe) - 1]['time'] + self.chunk_last_times[index] = chunk_last_time + + if os.path.exists(filename): + dataframe.to_csv(filename, mode='a', index=False, header=False) + else: + dataframe.to_csv(filename, mode='w', index=False, header=True) + + def __append_data(self, dataframe): + while len(dataframe) > 0: + chunk = self.__load_chunk(self.last_chunk_index) + rows_count = min(self.chunk_size - len(chunk), len(dataframe)) + + rows = dataframe.iloc[0:rows_count] + + if len(rows) > 0: + self.__save_chunk(self.last_chunk_index, rows) + self.total_size += rows_count + + self.last_time = rows.iloc[-1]['time'] + dataframe = dataframe[rows_count:] + + if len(dataframe) > 0: + self.last_chunk_index += 1 + + def __get_data(self, start_index, stop_index): + result = pd.DataFrame() + start_chunk = start_index // self.chunk_size + finish_chunk = self.last_chunk_index + if stop_index is not None: + finish_chunk = stop_index // self.chunk_size + for chunk_num in range(start_chunk, finish_chunk + 1): + chunk = self.__load_chunk(chunk_num) + if stop_index is not None and chunk_num == finish_chunk: + chunk = chunk[:stop_index % self.chunk_size] + if chunk_num == start_chunk: + chunk = chunk[start_index % self.chunk_size:] + result = pd.concat([result, chunk]) + return result diff --git a/src/learn.py b/src/learn.py new file mode 100644 index 0000000..7925a03 --- /dev/null +++ b/src/learn.py @@ -0,0 +1,52 @@ +#!/usr/bin/env python +import csv +import os +from worker import worker + + +def enqueue_task(): + tasks_file = "tasks.csv" + tasks = [] + with open(tasks_file) as csvfile: + rdr = csv.reader(csvfile, delimiter=',') + tasks = list(rdr) + if len(tasks) == 0: + return None + res = tasks[0][0] + tasks = tasks[1:] + with open(tasks_file, "w+") as csvfile: + writer = csv.writer(csvfile) + writer.writerows(tasks) + return res + + +def set_lock(value): + lock_file = "learn.lock" + exists = os.path.exists(lock_file) + if exists == value: + return False + + if value: + open(lock_file, "w+") + else: + os.remove(lock_file) + return True + + +if __name__ == "__main__": + if not set_lock(True): + print("learn locked") + exit(0) + + w = worker() + while True: + task = enqueue_task() + if task is None: + break + + w.start() + w.add_task({"type": "learn", "anomaly_name": task}) + w.add_task({"type": "predict", "anomaly_name": task}) + w.stop() + + set_lock(False) \ No newline at end of file diff --git a/src/pattern_detection_model.py b/src/pattern_detection_model.py new file mode 100644 index 0000000..8396578 --- /dev/null +++ b/src/pattern_detection_model.py @@ -0,0 +1,127 @@ +from data_provider import DataProvider +import logging +import os.path +import json +import pandas as pd + +datasource_folder = "datasources/" +dataset_folder = "datasets/" +anomalies_folder = "anomalies/" +models_folder = "models/" +metrics_folder = "metrics/" +logger = logging.getLogger('analytic_toolset') + + +def segments_box(segments): + max_time = 0 + min_time = float("inf") + for segment in segments: + min_time = min(min_time, segment['start']) + max_time = max(max_time, segment['finish']) + min_time = pd.to_datetime(min_time, unit='ms') + max_time = pd.to_datetime(max_time, unit='ms') + return min_time, max_time + + +class PatternDetectionModel: + + def __init__(self, pattern_name, preset=None): + self.pattern_name = pattern_name + self.preset = preset + + self.__load_anomaly_config() + datasource = self.anomaly_config['metric']['datasource'] + metric_name = self.anomaly_config['metric']['targets'][0] + + dbconfig_filename = os.path.join(datasource_folder, datasource + ".json") + target_filename = os.path.join(metrics_folder, metric_name + ".json") + + dataset_filename = os.path.join(dataset_folder, metric_name + ".csv") + + with open(dbconfig_filename, 'r') as config_file: + dbconfig = json.load(config_file) + + with open(target_filename, 'r') as file: + target = json.load(file) + + self.data_prov = DataProvider(dbconfig, target, dataset_filename) + + self.model = None + self.__load_model(preset) + + def learn(self, segments): + self.model = self.__create_model(self.preset) + window_size = 200 + + dataframe = self.data_prov.get_dataframe() + start_index, stop_index = 0, len(dataframe) + if len(segments) > 0: + min_time, max_time = segments_box(segments) + start_index = dataframe[dataframe['timestamp'] >= min_time].index[0] + stop_index = dataframe[dataframe['timestamp'] > max_time].index[0] + start_index = max(start_index - window_size, 0) + stop_index = min(stop_index + window_size, len(dataframe)) + + dataframe = dataframe[start_index:stop_index] + + segments = self.data_prov.transform_anomalies(segments) + self.model.fit(dataframe, segments) + self.__save_model() + return 0 + # return last_prediction_time + + def predict(self, last_prediction_time): + if self.model is None: + return [], last_prediction_time + + window_size = 100 + last_prediction_time = pd.to_datetime(last_prediction_time, unit='ms') + + start_index = self.data_prov.get_upper_bound(last_prediction_time) + start_index = max(0, start_index - window_size) + dataframe = self.data_prov.get_data_range(start_index) + + predicted_indexes = self.model.predict(dataframe) + predicted_indexes = [(x, y) for (x, y) in predicted_indexes if x >= start_index and y >= start_index] + + predicted_times = self.data_prov.inverse_transform_indexes(predicted_indexes) + segments = [] + for time_value in predicted_times: + ts1 = int(time_value[0].timestamp() * 1000) + ts2 = int(time_value[1].timestamp() * 1000) + segments.append({ + 'start': ts1, + 'finish': ts2 + }) + + last_dataframe_time = dataframe.iloc[- 1]['timestamp'] + last_prediction_time = int(last_dataframe_time.timestamp() * 1000) + return segments, last_prediction_time + # return predicted_anomalies, last_prediction_time + + def synchronize_data(self): + self.data_prov.synchronize() + + def __create_model(self, preset): + if preset == "peaks": + from peaks_detector import PeaksDetector + return PeaksDetector() + if preset == "steps" or preset == "cliffs": + from step_detector import StepDetector + return StepDetector(preset) + + def __load_anomaly_config(self): + with open(os.path.join(anomalies_folder, self.pattern_name + ".json"), 'r') as config_file: + self.anomaly_config = json.load(config_file) + + def __save_model(self): + logger.info("Save model '%s'" % self.pattern_name) + model_filename = os.path.join(models_folder, self.pattern_name + ".m") + self.model.save(model_filename) + + def __load_model(self, preset): + logger.info("Load model '%s'" % self.pattern_name) + model_filename = os.path.join(models_folder, self.pattern_name + ".m") + if os.path.exists(model_filename): + self.model = self.__create_model(preset) + self.model.load(model_filename) \ No newline at end of file diff --git a/src/peaks_detector.py b/src/peaks_detector.py new file mode 100644 index 0000000..3ea1138 --- /dev/null +++ b/src/peaks_detector.py @@ -0,0 +1,71 @@ +from scipy import signal +import numpy as np +import step_detect + + +class PeaksDetector: + def __init__(self): + pass + + def fit(self, dataset, contamination=0.005): + pass + + def predict(self, dataframe): + array = dataframe['value'].as_matrix() + window_size = 20 + # window = np.ones(101) + # mean_filtered = signal.fftconvolve( + # np.concatenate([np.zeros(window_size), array, np.zeros(window_size)]), + # window, + # mode='valid' + # ) + # filtered = np.divide(array, mean_filtered / 101) + + window = signal.general_gaussian(2 * window_size + 1, p=0.5, sig=5) + #print(window) + filtered = signal.fftconvolve(array, window, mode='valid') + + # filtered = np.concatenate([ + # np.zeros(window_size), + # filtered, + # np.zeros(window_size) + # ]) + filtered = filtered / np.sum(window) + array = array[window_size:-window_size] + filtered = np.subtract(array, filtered) + + import matplotlib.pyplot as plt + + # filtered = np.convolve(array, step, mode='valid') + # print(len(array)) + # print(len(filtered)) + + # step = np.hstack((np.ones(window_size), 0, -1*np.ones(window_size))) + # + # conv = np.convolve(array, step, mode='valid') + # + # conv = np.concatenate([ + # np.zeros(window_size), + # conv, + # np.zeros(window_size)]) + + #data = step_detect.t_scan(array, window=window_size) + data = filtered + data /= data.max() + + #plt.plot(array[:1000]) + plt.plot(data[:1000]) + plt.show() + + result = step_detect.find_steps(data, 0.1) + return [dataframe.index[x + window_size] for x in result] + + def save(self, model_filename): + pass + # with open(model_filename, 'wb') as file: + # pickle.dump((self.clf, self.scaler), file) + + def load(self, model_filename): + pass + # with open(model_filename, 'rb') as file: + # self.clf, self.scaler = pickle.load(file) \ No newline at end of file diff --git a/src/predict.py b/src/predict.py new file mode 100644 index 0000000..bd975a8 --- /dev/null +++ b/src/predict.py @@ -0,0 +1,83 @@ +import argparse +import csv +import time +import datetime +import pandas as pd +import matplotlib.pyplot as plt + +from influxdb import InfluxDBClient +from sklearn import svm +import numpy as np +import math +import pickle + + +host = "209.205.120.226" +port = 8086 +datasetFile = "/tmp/dataset.csv" +anomaliesFile = "anomalies.csv" +predictedAnomaliesFile = "predicted_anomalies.csv" +modelFilename = 'finalized_model.sav' + + +def readAnomalies(): + anomalies = [] + + with open(anomaliesFile) as csvfile: + rdr = csv.reader(csvfile, delimiter=',') + for row in rdr: + anomaly = (int(row[0]), int(row[1])) + anomalies.append(anomaly) + + return anomalies + + +"""Instantiate a connection to the InfluxDB.""" +user = '' +password = '' +dbname = 'accelerometer' +query = 'select k0, k1, k2 from vals limit 10000;' + + +client = InfluxDBClient(host, port, user, password, dbname) + +def predict(host=host, port=port): + + result = client.query(query) + df = pd.DataFrame(result['vals'], columns=['time', 'k0', 'k1', 'k2']) + + basedAnomalies = readAnomalies() + + df2 = df.rolling(200, win_type='triang').sum() + df2['time'] = pd.to_datetime(df2['time']) + df2 = df2[np.isfinite(df2['k0'])] + + print(len(df2)) + + + anomalies = [] + last_anomaly = (-1, -1) + with open(modelFilename, 'rb') as fid: + clf = pickle.load(fid) + prediction = clf.predict(df2[['k0', 'k1', 'k2']]) + print(len(prediction)) + #print(prediction) + for i in range(len(prediction)): + if prediction[i] > 0.: + t = df2['time'][i + 199].timestamp() + t = ((t + 0 * 3600) * 1000) + if t < basedAnomalies[len(basedAnomalies) - 1][1]: + continue + if t < last_anomaly[1] + 1000: + last_anomaly = (last_anomaly[0], t) + else: + if last_anomaly[1] != -1: + anomalies.append(last_anomaly) + last_anomaly = (t, t) + + with open(predictedAnomaliesFile, "w") as file: + for anomaly in anomalies: + file.write(str(int(anomaly[0])) + "," + str(int(anomaly[1])) + "\n") + +predict() + diff --git a/src/prophet_algorithm.py b/src/prophet_algorithm.py new file mode 100644 index 0000000..f51c99d --- /dev/null +++ b/src/prophet_algorithm.py @@ -0,0 +1,46 @@ +from fbprophet import Prophet +import pandas as pd + + +class prophet_algorithm(object): + def __init__(self): + self.model = None + self.dataset = None + + def fit(self, data, anomalies): + pass + + def predict(self, data): + data = data.reset_index() + data = data.rename(columns={'timestamp': 'ds', 'value': 'y'}) + self.dataset = data + + self.model = Prophet(yearly_seasonality=False, weekly_seasonality=False, daily_seasonality=True) + self.model.fit(self.dataset) + + future = self.model.make_future_dataframe(freq='H', periods=0, include_history=True) + forecast = self.model.predict(future) + cmp_df = forecast.set_index('ds')[['yhat', 'yhat_lower', 'yhat_upper']].join(self.dataset.set_index('ds')) + cmp_df['e'] = [ max(row.y - row.yhat_upper, row.yhat_lower - row.y, 0) for index, row in cmp_df.iterrows() ] + return self.__calc_anomalies(cmp_df) + + def __calc_anomalies(self, dataset): + anomalies = [] + cur_anomaly = None + for i in range(len(dataset)): + if dataset['e'][i] > 17: + if cur_anomaly is None: + cur_anomaly = {'start': dataset.index[i], 'finish': dataset.index[i], 'weight': 0} + cur_anomaly['finish'] = dataset.index[i] + cur_anomaly['weight'] += dataset['e'][i] + elif cur_anomaly is not None: + anomalies.append(cur_anomaly) + cur_anomaly = None + return anomalies + + +if __name__ == "__main__": + dataset = pd.read_csv('art_daily_flatmiddle.csv', index_col=['timestamp'], parse_dates=['timestamp']) + algo = prophet_algorithm(dataset) + res = algo.fit() + print(res) \ No newline at end of file diff --git a/src/step_detect.py b/src/step_detect.py new file mode 100644 index 0000000..4ff627d --- /dev/null +++ b/src/step_detect.py @@ -0,0 +1,231 @@ + +""" +Thomas Kahn +thomas.b.kahn@gmail.com +""" +from __future__ import absolute_import +from math import sqrt +import multiprocessing as mp +import numpy as np +from six.moves import range +from six.moves import zip + + +def t_scan(L, window = 1e3, num_workers = -1): + """ + Computes t statistic for i to i+window points versus i-window to i + points for each point i in input array. Uses multiple processes to + do this calculation asynchronously. Array is decomposed into window + number of frames, each consisting of points spaced at window + intervals. This optimizes the calculation, as the drone function + need only compute the mean and variance for each set once. + Parameters + ---------- + L : numpy array + 1 dimensional array that represents time series of datapoints + window : int / float + Number of points that comprise the windows of data that are + compared + num_workers : int + Number of worker processes for multithreaded t_stat computation + Defult value uses num_cpu - 1 workers + Returns + ------- + t_stat : numpy array + Array which holds t statistic values for each point. The first + and last (window) points are replaced with zero, since the t + statistic calculation cannot be performed in that case. + """ + size = L.size + window = int(window) + frames = list(range(window)) + n_cols = (size // window) - 1 + + t_stat = np.zeros((window, n_cols)) + + if num_workers == 1: + results = [_t_scan_drone(L, n_cols, frame, window) for frame in frames] + else: + if num_workers == -1: + num_workers = mp.cpu_count() - 1 + pool = mp.Pool(processes = num_workers) + results = [pool.apply_async(_t_scan_drone, args=(L, n_cols, frame, window)) for frame in frames] + results = [r.get() for r in results] + pool.close() + + for index, row in results: + t_stat[index] = row + + t_stat = np.concatenate(( + np.zeros(window), + t_stat.transpose().ravel(order='C'), + np.zeros(size % window) + )) + + return t_stat + + +def _t_scan_drone(L, n_cols, frame, window=1e3): + """ + Drone function for t_scan. Not Intended to be called manually. + Computes t_scan for the designated frame, and returns result as + array along with an integer tag for proper placement in the + aggregate array + """ + size = L.size + window = int(window) + root_n = sqrt(window) + + output = np.zeros(n_cols) + b = L[frame:window+frame] + b_mean = b.mean() + b_var = b.var() + for i in range(window+frame, size-window, window): + a = L[i:i+window] + a_mean = a.mean() + a_var = a.var() + output[i // window - 1] = root_n * (a_mean - b_mean) / sqrt(a_var + b_var) + b_mean, b_var = a_mean, a_var + + return frame, output + + +def mz_fwt(x, n=2): + """ + Computes the multiscale product of the Mallat-Zhong discrete forward + wavelet transform up to and including scale n for the input data x. + If n is even, the spikes in the signal will be positive. If n is odd + the spikes will match the polarity of the step (positive for steps + up, negative for steps down). + This function is essentially a direct translation of the MATLAB code + provided by Sadler and Swami in section A.4 of the following: + http://www.dtic.mil/dtic/tr/fulltext/u2/a351960.pdf + Parameters + ---------- + x : numpy array + 1 dimensional array that represents time series of data points + n : int + Highest scale to multiply to + Returns + ------- + prod : numpy array + The multiscale product for x + """ + N_pnts = x.size + lambda_j = [1.5, 1.12, 1.03, 1.01][0:n] + if n > 4: + lambda_j += [1.0]*(n-4) + + H = np.array([0.125, 0.375, 0.375, 0.125]) + G = np.array([2.0, -2.0]) + + Gn = [2] + Hn = [3] + for j in range(1,n): + q = 2**(j-1) + Gn.append(q+1) + Hn.append(3*q+1) + + S = np.concatenate((x[::-1], x)) + S = np.concatenate((S, x[::-1])) + prod = np.ones(N_pnts) + for j in range(n): + n_zeros = 2**j - 1 + Gz = _insert_zeros(G, n_zeros) + Hz = _insert_zeros(H, n_zeros) + current = (1.0/lambda_j[j])*np.convolve(S,Gz) + current = current[N_pnts+Gn[j]:2*N_pnts+Gn[j]] + prod *= current + if j == n-1: + break + S_new = np.convolve(S, Hz) + S_new = S_new[N_pnts+Hn[j]:2*N_pnts+Hn[j]] + S = np.concatenate((S_new[::-1], S_new)) + S = np.concatenate((S, S_new[::-1])) + return prod + + +def _insert_zeros(x, n): + """ + Helper function for mz_fwt. Splits input array and adds n zeros + between values. + """ + newlen = (n+1)*x.size + out = np.zeros(newlen) + indices = list(range(0, newlen-n, n+1)) + out[indices] = x + return out + + +def find_steps(array, threshold): + """ + Finds local maxima by segmenting array based on positions at which + the threshold value is crossed. Note that this thresholding is + applied after the absolute value of the array is taken. Thus, + the distinction between upward and downward steps is lost. However, + get_step_sizes can be used to determine directionality after the + fact. + Parameters + ---------- + array : numpy array + 1 dimensional array that represents time series of data points + threshold : int / float + Threshold value that defines a step + Returns + ------- + steps : list + List of indices of the detected steps + """ + steps = [] + array = np.abs(array) + above_points = np.where(array > threshold, 1, 0) + ap_dif = np.diff(above_points) + cross_ups = np.where(ap_dif == 1)[0] + cross_dns = np.where(ap_dif == -1)[0] + for upi, dni in zip(cross_ups,cross_dns): + steps.append(np.argmax(array[upi:dni]) + upi) + return steps + + +def get_step_sizes(array, indices, window=1000): + """ + Calculates step size for each index within the supplied list. Step + size is determined by averaging over a range of points (specified + by the window parameter) before and after the index of step + occurrence. The directionality of the step is reflected by the sign + of the step size (i.e. a positive value indicates an upward step, + and a negative value indicates a downward step). The combined + standard deviation of both measurements (as a measure of uncertainty + in step calculation) is also provided. + Parameters + ---------- + array : numpy array + 1 dimensional array that represents time series of data points + indices : list + List of indices of the detected steps (as provided by + find_steps, for example) + window : int, optional + Number of points to average over to determine baseline levels + before and after step. + Returns + ------- + step_sizes : list + List of the calculated sizes of each step + step_error : list + """ + step_sizes = [] + step_error = [] + indices = sorted(indices) + last = len(indices) - 1 + for i, index in enumerate(indices): + if i == 0: + q = min(window, indices[i+1]-index) + elif i == last: + q = min(window, index - indices[i-1]) + else: + q = min(window, index-indices[i-1], indices[i+1]-index) + a = array[index:index+q] + b = array[index-q:index] + step_sizes.append(a.mean() - b.mean()) + step_error.append(sqrt(a.var()+b.var())) + return step_sizes, step_error \ No newline at end of file diff --git a/src/step_detector.py b/src/step_detector.py new file mode 100644 index 0000000..0c2d66a --- /dev/null +++ b/src/step_detector.py @@ -0,0 +1,188 @@ +import numpy as np +import pickle + + +def find_segments(array, threshold): + segments = [] + above_points = np.where(array > threshold, 1, 0) + ap_dif = np.diff(above_points) + cross_ups = np.where(ap_dif == 1)[0] + cross_dns = np.where(ap_dif == -1)[0] + for upi, dni in zip(cross_ups,cross_dns): + segments.append((upi, dni)) + return segments + + +def is_intersect(target_segment, segments): + for segment in segments: + start = max(segment['start'], target_segment[0]) + finish = min(segment['finish'], target_segment[1]) + if start <= finish: + return True + return False + + +def calc_intersections(segments, finded_segments): + intersections = 0 + labeled = 0 + for segment in segments: + if not segment['labeled']: + continue + + labeled += 1 + intersect = False + for finded_segment in finded_segments: + start = max(segment['start'], finded_segment[0]) + finish = min(segment['finish'], finded_segment[1]) + if start <= finish: + intersect = True + break + if intersect: + intersections += 1 + return intersections, labeled + + +def cost_function(segments, finded_segments): + intersections, labeled = calc_intersections(segments, finded_segments) + return intersections == labeled + + +def compress_segments(segments): + result = [] + for segment in segments: + if len(result) == 0 or result[len(result) - 1][1] < segment[0]: + result.append(segment) + else: + result[len(result) - 1] = (result[len(result) - 1][0], segment[1]) + return result + + +class StepDetector: + def __init__(self, preset): + self.preset = preset + self.mean = None + self.window_size = None + self.corr_max = None + self.threshold = None + self.segments = [] + + def fit(self, dataframe, segments, contamination=0.01): + array = dataframe['value'].as_matrix() + self.mean = array.mean() + self.segments = segments + + norm_data = (array - self.mean) + + self.__optimize(norm_data, segments, contamination) + + # print(self.threshold) + + # import matplotlib.pyplot as plt + # fig, ax = plt.subplots(figsize=[18, 16]) + # ax = fig.add_subplot(2, 1, 1) + # ax.plot(array) + # ax = fig.add_subplot(2, 1, 2, sharex=ax) + # ax.plot(corr_res) + # plt.show() + + # #print(R.size) + # # Nw = 20 + # # result = R[Nw,Nw:-1] + # # result[0] = 0 + # #ax.plot(result) + # #print(len(data)) + # #print(len(R)) + # + # print(self.window_size) + # print(self.threshold) + + def predict(self, dataframe): + array = dataframe['value'].as_matrix() + + norm_data = (array - self.mean) + + step_size = self.window_size // 2 + pattern = np.concatenate([[-1] * step_size, [1] * step_size]) + corr_res = np.correlate(norm_data, pattern, mode='valid') / self.window_size + corr_res = np.concatenate((np.zeros(step_size), corr_res, np.zeros(step_size))) + + corr_res /= self.corr_max + + result = self.__predict(corr_res, self.threshold) + + # import matplotlib.pyplot as plt + # fig, ax = plt.subplots(figsize=[18, 16]) + # ax = fig.add_subplot(2, 1, 1) + # ax.plot(array[:70000]) + # ax = fig.add_subplot(2, 1, 2, sharex=ax) + # ax.plot(corr_res[:70000]) + # plt.show() + + result.sort() + result = compress_segments(result) + + if len(self.segments) > 0: + result = [segment for segment in result if not is_intersect(segment, self.segments)] + return result + + def __optimize(self, data, segments, contamination): + window_size = 10 + mincost = None + while window_size < 100: + # print(window_size) + cost = self.__optimize_threshold(data, window_size, segments, contamination) + if mincost is None or cost < mincost: + mincost = cost + self.window_size = window_size + window_size = int(window_size * 1.2) + self.__optimize_threshold(data, self.window_size, segments, contamination) + + def __optimize_threshold(self, data, window_size, segments, contamination): + step_size = window_size // 2 + pattern = np.concatenate([[-1] * step_size, [1] * step_size]) + corr_res = np.correlate(data, pattern, mode='same') / window_size + corr_res = np.concatenate((np.zeros(step_size), corr_res, np.zeros(step_size))) + self.corr_max = corr_res.max() + corr_res /= self.corr_max + N = 20 + lower = 0. + upper = 1. + cost = 0 + for i in range(0, N): + self.threshold = 0.5 * (lower + upper) + result = self.__predict(corr_res, self.threshold) + + if len(segments) > 0: + intersections, labeled = calc_intersections(segments, result) + good = intersections == labeled + cost = len(result) + else: + total_sum = 0 + for segment in result: + total_sum += (segment[1] - segment[0]) + good = total_sum > len(data) * contamination + cost = -self.threshold + + if good: + lower = self.threshold + else: + upper = self.threshold + + return cost + + def __predict(self, data, threshold): + segments = find_segments(data, threshold) + segments += find_segments(data * -1, threshold) + #segments -= 1 + return [(x - 1, y - 1) for (x, y) in segments] + + def save(self, model_filename): + with open(model_filename, 'wb') as file: + pickle.dump((self.mean, self.window_size, self.corr_max, self.threshold), file) + + def load(self, model_filename): + try: + with open(model_filename, 'rb') as file: + self.mean, self.window_size, self.corr_max, self.threshold = pickle.load(file) + except: + pass \ No newline at end of file diff --git a/src/supervised_algorithm.py b/src/supervised_algorithm.py new file mode 100644 index 0000000..59da1a4 --- /dev/null +++ b/src/supervised_algorithm.py @@ -0,0 +1,71 @@ +import pickle +from tsfresh.transformers.feature_selector import FeatureSelector +from sklearn.preprocessing import MinMaxScaler +from sklearn.ensemble import IsolationForest +import pandas as pd + +from sklearn import svm + + +class supervised_algorithm(object): + frame_size = 16 + good_features = [ + #"value__agg_linear_trend__f_agg_\"max\"__chunk_len_5__attr_\"intercept\"", + # "value__cwt_coefficients__widths_(2, 5, 10, 20)__coeff_12__w_20", + # "value__cwt_coefficients__widths_(2, 5, 10, 20)__coeff_13__w_5", + # "value__cwt_coefficients__widths_(2, 5, 10, 20)__coeff_2__w_10", + # "value__cwt_coefficients__widths_(2, 5, 10, 20)__coeff_2__w_20", + # "value__cwt_coefficients__widths_(2, 5, 10, 20)__coeff_8__w_20", + # "value__fft_coefficient__coeff_3__attr_\"abs\"", + "time_of_day_column_x", + "time_of_day_column_y", + "value__abs_energy", + # "value__absolute_sum_of_changes", + # "value__sum_of_reoccurring_data_points", + ] + clf = None + scaler = None + + def __init__(self): + self.features = [] + self.col_to_max, self.col_to_min, self.col_to_median = None, None, None + self.augmented_path = None + + def fit(self, dataset, contamination=0.005): + dataset = dataset[self.good_features] + dataset = dataset[-100000:] + + self.scaler = MinMaxScaler(feature_range=(-1, 1)) + # self.clf = svm.OneClassSVM(nu=contamination, kernel="rbf", gamma=0.1) + self.clf = IsolationForest(contamination=contamination) + + self.scaler.fit(dataset) + + dataset = self.scaler.transform(dataset) + self.clf.fit(dataset) + + def predict(self, dataframe): + dataset = dataframe[self.good_features] + dataset = self.scaler.transform(dataset) + prediction = self.clf.predict(dataset) + + # for i in range(len(dataset)): + # print(str(dataset[i]) + " " + str(prediction[i])) + + prediction = [x < 0.0 for x in prediction] + return pd.Series(prediction, index=dataframe.index) + + def save(self, model_filename): + with open(model_filename, 'wb') as file: + pickle.dump((self.clf, self.scaler), file) + + def load(self, model_filename): + with open(model_filename, 'rb') as file: + self.clf, self.scaler = pickle.load(file) + + def __select_features(self, x, y): + # feature_selector = FeatureSelector() + feature_selector = FeatureSelector() + + feature_selector.fit(x, y) + return feature_selector.relevant_features diff --git a/src/worker.py b/src/worker.py new file mode 100644 index 0000000..7359fbf --- /dev/null +++ b/src/worker.py @@ -0,0 +1,131 @@ +from anomaly_model import AnomalyModel +from pattern_detection_model import PatternDetectionModel +import queue +import threading +import json +import logging +import sys +import traceback + +logging.basicConfig(level=logging.DEBUG, + format='%(asctime)s %(name)-12s %(levelname)-8s %(message)s', + filename='analytic_toolset.log', + filemode='a') +logger = logging.getLogger('analytic_toolset') + + +class worker(object): + models_cache = {} + thread = None + queue = queue.Queue() + + def start(self): + self.thread = threading.Thread(target=self.run) + self.thread.start() + + def stop(self): + if self.thread: + self.queue.put(None) + self.thread.join() + + def run(self): + while True: + task = self.queue.get() + if task['type'] == "stop": + break + self.do_task(task) + self.queue.task_done() + + def add_task(self, task): + self.queue.put(task) + + def do_task(self, task): + try: + type = task['type'] + anomaly_id = task['anomaly_id'] + if type == "predict": + last_prediction_time = task['last_prediction_time'] + analytics_type = task['analytics_type'] + preset = None + if "preset" in task: + preset = task['preset'] + result = self.do_predict(anomaly_id, last_prediction_time, analytics_type, preset) + elif type == "learn": + segments = task['segments'] + analytics_type = task['analytics_type'] + preset = None + if "preset" in task: + preset = task['preset'] + result = self.do_learn(anomaly_id, segments, analytics_type, preset) + else: + result = { + 'status': "failed", + 'error': "unknown type " + str(type) + } + except Exception as e: + #traceback.extract_stack() + error_text = traceback.format_exc() + logger.error("Exception: '%s'" % error_text) + result = { + 'task': type, + 'status': "failed", + 'anomaly_id': anomaly_id, + 'error': str(e) + } + return result + + def do_learn(self, anomaly_id, segments, analytics_type, preset=None): + model = self.get_model(anomaly_id, analytics_type, preset) + model.synchronize_data() + last_prediction_time = model.learn(segments) + result = self.do_predict(anomaly_id, last_prediction_time, analytics_type, preset) + result['task'] = 'learn' + return result + + def do_predict(self, anomaly_id, last_prediction_time, analytics_type, preset=None): + model = self.get_model(anomaly_id, analytics_type, preset) + model.synchronize_data() + segments, last_prediction_time = model.predict(last_prediction_time) + return { + 'task': "predict", + 'status': "success", + 'anomaly_id': anomaly_id, + 'segments': segments, + 'last_prediction_time': last_prediction_time + } + + def get_model(self, anomaly_id, analytics_type, preset=None): + if anomaly_id not in self.models_cache: + if analytics_type == "anomalies": + model = AnomalyModel(anomaly_id) + elif analytics_type == "patterns": + model = PatternDetectionModel(anomaly_id, preset) + self.models_cache[anomaly_id] = model + return self.models_cache[anomaly_id] + + +if __name__ == "__main__": + w = worker() + logger.info("Worker was started") + while True: + try: + text = input("") + task = json.loads(text) + logger.info("Received command '%s'" % text) + if task['type'] == "stop": + logger.info("Stopping...") + break + print(json.dumps({ + 'task': task['type'], + 'anomaly_id': task['anomaly_id'], + '__task_id': task['__task_id'], + 'status': "in progress" + })) + sys.stdout.flush() + res = w.do_task(task) + res['__task_id'] = task['__task_id'] + print(json.dumps(res)) + sys.stdout.flush() + except Exception as e: + logger.error("Exception: '%s'" % str(e)) +