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import * as SegmentsController from '../models/segment_model';
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import * as AnalyticUnit from '../models/analytic_unit_model'
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import { AnalyticsService, AnalyticsMessage } from '../services/analytics_service';
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const taskMap = {};
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let nextTaskId = 0;
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let analyticsService: AnalyticsService = undefined;
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function onTaskResult(taskResult: any) {
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let taskId = taskResult._taskId;
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let status = taskResult.status;
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if(status === 'SUCCESS' || status === 'FAILED') {
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if(taskId in taskMap) {
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let resolver = taskMap[taskId];
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resolver(taskResult);
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delete taskMap[taskId];
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}
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}
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}
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async function onMessage(message: AnalyticsMessage) {
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let responsePayload = null;
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let resolvedMethod = false;
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if(message.method === 'TASK_RESULT') {
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onTaskResult(message.payload);
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resolvedMethod = true;
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}
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if(!resolvedMethod) {
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throw new TypeError('Unknown method ' + message.method);
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}
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// TODO: catch exception and send error in this case
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if(message.requestId !== undefined) {
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message.payload = responsePayload;
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analyticsService.sendMessage(message);
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}
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}
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export function init() {
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analyticsService = new AnalyticsService(onMessage);
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}
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export function terminate() {
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analyticsService.close();
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}
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async function runTask(task): Promise<any> {
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// let anomaly: AnalyticUnit.AnalyticUnit = await AnalyticUnit.findById(task.analyticUnitId);
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// task.metric = {
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// datasource: anomaly.metric.datasource,
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// targets: anomaly.metric.targets.map(getTarget)
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// };
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// task._taskId = nextTaskId++;
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// await analyticsService.sendTask(task);
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// return new Promise<void>(resolve => {
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// taskMap[task._taskId] = resolve;
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// })
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}
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export async function runLearning(id: AnalyticUnit.AnalyticUnitId) {
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// let segments = getLabeledSegments(id);
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// AnalyticUnit.setStatus(id, 'LEARNING');
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// let unit = await AnalyticUnit.findById(id);
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// let pattern = unit.type;
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// let task = {
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// analyticUnitId: id,
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// type: 'LEARN',
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// pattern,
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// segments: segments
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// };
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// let result = await runTask(task);
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// if (result.status === 'SUCCESS') {
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// AnalyticUnit.setStatus(id, 'READY');
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// insertSegments(id, result.segments, false);
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// AnalyticUnit.setPredictionTime(id, result.lastPredictionTime);
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// } else {
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// AnalyticUnit.setStatus(id, 'FAILED', result.error);
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// }
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}
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export async function runPredict(id: AnalyticUnit.AnalyticUnitId) {
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// let unit = await AnalyticUnit.findById(id);
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// let pattern = unit.type;
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// let task = {
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// type: 'PREDICT',
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// analyticUnitId: id,
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// pattern,
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// lastPredictionTime: unit.lastPredictionTime
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// };
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// let result = await runTask(task);
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// if(result.status === 'FAILED') {
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// return [];
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// }
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// // Merging segments
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// let segments = getLabeledSegments(id);
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// if(segments.length > 0 && result.segments.length > 0) {
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// let lastOldSegment = segments[segments.length - 1];
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// let firstNewSegment = result.segments[0];
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// if(firstNewSegment.start <= lastOldSegment.finish) {
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// result.segments[0].start = lastOldSegment.start;
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// removeSegments(id, [lastOldSegment.id]);
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// }
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// }
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// insertSegments(id, result.segments, false);
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// AnalyticUnit.setPredictionTime(id, result.lastPredictionTime);
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// return result.segments;
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}
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export function isAnalyticReady(): boolean {
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return analyticsService.ready;
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}
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export async function createAnalyticUnitFromObject(obj: any): Promise<AnalyticUnit.AnalyticUnitId> {
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let unit: AnalyticUnit.AnalyticUnit = AnalyticUnit.AnalyticUnit.fromObject(obj);
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let id = await AnalyticUnit.create(unit);
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// runLearning(unit);
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return id;
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}
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