122 lines
4.4 KiB
JavaScript
122 lines
4.4 KiB
JavaScript
'use strict';
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exports = module.exports = {
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get: get,
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stopTask: stopTask,
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list: list,
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getLogs: getLogs,
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getLogStream: getLogStream
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};
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let assert = require('assert'),
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HttpError = require('connect-lastmile').HttpError,
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HttpSuccess = require('connect-lastmile').HttpSuccess,
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TaskError = require('../tasks.js').TaskError,
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tasks = require('../tasks.js');
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function stopTask(req, res, next) {
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assert.strictEqual(typeof req.params.taskId, 'string');
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tasks.stopTask(req.params.taskId, function (error) {
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if (error && error.reason === TaskError.NOT_FOUND) return next(new HttpError(404, 'No such task'));
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if (error && error.reason === TaskError.BAD_STATE) return next(new HttpError(409, error.message));
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if (error) return next(new HttpError(500, error));
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next(new HttpSuccess(204, {}));
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});
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}
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function get(req, res, next) {
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assert.strictEqual(typeof req.params.taskId, 'string');
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tasks.get(req.params.taskId, function (error, task) {
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if (error && error.reason === TaskError.NOT_FOUND) return next(new HttpError(404, 'No such task'));
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if (error) return next(new HttpError(500, error));
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next(new HttpSuccess(200, tasks.removePrivateFields(task)));
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});
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}
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function list(req, res, next) {
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var page = typeof req.query.page !== 'undefined' ? parseInt(req.query.page) : 1;
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if (!page || page < 0) return next(new HttpError(400, 'page query param has to be a postive number'));
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var perPage = typeof req.query.per_page !== 'undefined'? parseInt(req.query.per_page) : 25;
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if (!perPage || perPage < 0) return next(new HttpError(400, 'per_page query param has to be a postive number'));
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if (req.query.type && typeof req.query.type !== 'string') return next(new HttpError(400, 'type must be a string'));
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tasks.listByTypePaged(req.query.type || null, page, perPage, function (error, result) {
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if (error) return next(new HttpError(500, error));
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result = result.map(tasks.removePrivateFields);
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next(new HttpSuccess(200, { tasks: result }));
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});
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}
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function getLogs(req, res, next) {
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assert.strictEqual(typeof req.params.taskId, 'string');
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var lines = req.query.lines ? parseInt(req.query.lines, 10) : 100;
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if (isNaN(lines)) return next(new HttpError(400, 'lines must be a number'));
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var options = {
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lines: lines,
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follow: false,
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format: req.query.format
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};
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tasks.getLogs(req.params.taskId, options, function (error, logStream) {
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if (error && error.reason === TaskError.NOT_FOUND) return next(new HttpError(404, 'No such task'));
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if (error) return next(new HttpError(500, error));
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res.writeHead(200, {
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'Content-Type': 'application/x-logs',
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'Content-Disposition': 'attachment; filename="log.txt"',
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'Cache-Control': 'no-cache',
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'X-Accel-Buffering': 'no' // disable nginx buffering
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});
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logStream.pipe(res);
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});
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}
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// this route is for streaming logs
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function getLogStream(req, res, next) {
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assert.strictEqual(typeof req.params.taskId, 'string');
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var lines = req.query.lines ? parseInt(req.query.lines, 10) : -10; // we ignore last-event-id
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if (isNaN(lines)) return next(new HttpError(400, 'lines must be a valid number'));
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function sse(id, data) { return 'id: ' + id + '\ndata: ' + data + '\n\n'; }
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if (req.headers.accept !== 'text/event-stream') return next(new HttpError(400, 'This API call requires EventStream'));
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var options = {
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lines: lines,
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follow: true
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};
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tasks.getLogs(req.params.taskId, options, function (error, logStream) {
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if (error && error.reason === TaskError.NOT_FOUND) return next(new HttpError(404, 'No such task'));
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if (error) return next(new HttpError(500, error));
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res.writeHead(200, {
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'Content-Type': 'text/event-stream',
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'Cache-Control': 'no-cache',
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'Connection': 'keep-alive',
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'X-Accel-Buffering': 'no', // disable nginx buffering
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'Access-Control-Allow-Origin': '*'
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});
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res.write('retry: 3000\n');
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res.on('close', logStream.close);
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logStream.on('data', function (data) {
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var obj = JSON.parse(data);
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res.write(sse(obj.monotonicTimestamp, JSON.stringify(obj))); // send timestamp as id
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});
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logStream.on('end', res.end.bind(res));
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logStream.on('error', res.end.bind(res, null));
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});
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}
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