yolo_web/dist/client.js

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const node_fetch_1 = __importDefault(require("node-fetch"));
const log_1 = require("./log");
const dotenv_1 = __importDefault(require("dotenv"));
const child_process_1 = require("child_process");
dotenv_1.default.config();
const log = (0, log_1.createLog)('client');
class Client {
    constructor() {
        this.maxJobs = 1;
        this.url = 'http://localhost:3333';
        this.jobs = [];
        if (typeof process.env.YOLO_WEB_URL !== 'undefined') {
            this.url = process.env.YOLO_WEB_URL;
        }
        this.cron();
    }
    cron() {
        this.job();
        setInterval(this.job.bind(this), 60 * 1000);
    }
    job() {
        if (this.jobs.length >= this.maxJobs) {
            return;
        }
        this.poll();
    }
    async poll() {
        const options = {
            method: 'GET'
        };
        const url = `${this.url}/job`;
        let res;
        let json = null;
        try {
            log.info('Checking for new jobs...');
            res = await (0, node_fetch_1.default)(url, options);
        }
        catch (err) {
            log.error(`ERROR getting ${url}`);
            log.error(err);
            process.exit(1);
            return;
        }
        try {
            json = await res.json();
        }
        catch (err) {
            log.error('ERROR parsing JSON');
            log.error(err);
        }
        if (json === null || json.length === 0) {
            log.info('No jobs found.');
            return;
        }
        await this.claim(json[0]);
    }
    async claim(id) {
        const options = {
            method: 'POST'
        };
        const url = `${this.url}/job/claim/${id}`;
        let res;
        let json;
        try {
            log.info(`Claiming job ${id}...`);
            res = await (0, node_fetch_1.default)(url, options);
        }
        catch (err) {
            log.error(`ERROR posting to ${url}`);
            log.error(err);
            process.exit(1);
            return;
        }
        try {
            json = await res.json();
            log.info(json);
        }
        catch (err) {
            log.error('ERROR parsing JSON');
            log.error(err);
            process.exit(2);
            return;
        }
        if (this.jobs.indexOf(id) === -1) {
            this.jobs.push(id);
            log.info(`Claimed job ${id}`);
            this.train(json);
        }
    }
    async train(job) {
        const cmd = 'bash';
        const args = ['./scripts/train.sh', JSON.stringify(job)];
        const child = (0, child_process_1.spawn)(cmd, args);
        child.stdout.on('data', (data) => {
            const line = data.toString().trim();
            if (line === '')
                return;
            log.info(line);
        });
        child.stderr.on('data', (data) => {
            const line = data.toString().trim();
            if (line === '')
                return;
            log.info(line);
        });
        /*child.on('close', (code : number) => {
            log.info(`child process close all stdio with code ${code}`);
        });*/
        child.on('exit', (code) => {
            log.info(`Train job completed with code ${code}`);
            if (code !== 0) {
                this.fail(job.id, `Train script exited with code ${code}`);
            }
        });
        child.on('error', (err) => {
            log.error('train job errored out');
            log.error(err);
            this.fail(job.id, err.toString());
        });
    }
    async fail(id, reason) {
        const meta = {
            meta: reason
        };
        const options = {
            method: 'POST',
            headers: {
                'Accept': 'application/json',
                'Content-Type': 'application/json'
            },
            body: JSON.stringify(meta)
        };
        const url = `${this.url}/job/fail/${id}`;
        let res;
        let json;
        this.removeJob(id);
        try {
            log.info(`Failed job ${id}...`);
            res = await (0, node_fetch_1.default)(url, options);
        }
        catch (err) {
            log.error(`ERROR posting to ${url}`);
            log.error(err);
            process.exit(1);
            return;
        }
        try {
            json = await res.json();
            log.info(json);
        }
        catch (err) {
            log.error('ERROR parsing JSON');
            log.error(err);
            process.exit(2);
            return;
        }
        log.info(json);
    }
    removeJob(id) {
        const index = this.jobs.indexOf(id);
        if (index !== -1) {
            this.jobs.splice(index, 1);
        }
    }
}
new Client();
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