134 lines
3.3 KiB
JavaScript
134 lines
3.3 KiB
JavaScript
'use strict';
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var assert = require('assert');
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var uuid = require('node-uuid');
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var jobStatus = require('../job_status');
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var validStatusTransitions = [
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[jobStatus.PENDING, jobStatus.RUNNING],
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[jobStatus.PENDING, jobStatus.CANCELLED],
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[jobStatus.PENDING, jobStatus.UNKNOWN],
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[jobStatus.RUNNING, jobStatus.DONE],
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[jobStatus.RUNNING, jobStatus.FAILED],
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[jobStatus.RUNNING, jobStatus.CANCELLED],
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[jobStatus.RUNNING, jobStatus.PENDING],
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[jobStatus.RUNNING, jobStatus.UNKNOWN]
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];
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var mandatoryProperties = [
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'job_id',
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'status',
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'query',
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'created_at',
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'updated_at',
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'user'
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];
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function JobBase(data) {
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var now = new Date().toISOString();
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this.data = data;
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if (!this.data.job_id) {
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this.data.job_id = uuid.v4();
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}
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if (!this.data.created_at) {
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this.data.created_at = now;
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}
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if (!this.data.updated_at) {
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this.data.updated_at = now;
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}
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}
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module.exports = JobBase;
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JobBase.prototype.isValidStatusTransition = function (initialStatus, finalStatus) {
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var transition = [ initialStatus, finalStatus ];
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for (var i = 0; i < validStatusTransitions.length; i++) {
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try {
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assert.deepEqual(transition, validStatusTransitions[i]);
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return true;
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} catch (e) {
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continue;
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}
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}
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return false;
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};
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// should be implemented by childs
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JobBase.prototype.getNextQuery = function () {
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throw new Error('Unimplemented method');
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};
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JobBase.prototype.hasNextQuery = function () {
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return !!this.getNextQuery();
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};
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JobBase.prototype.isPending = function () {
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return this.data.status === jobStatus.PENDING;
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};
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JobBase.prototype.isRunning = function () {
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return this.data.status === jobStatus.RUNNING;
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};
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JobBase.prototype.isDone = function () {
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return this.data.status === jobStatus.DONE;
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};
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JobBase.prototype.isCancelled = function () {
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return this.data.status === jobStatus.CANCELLED;
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};
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JobBase.prototype.isFailed = function () {
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return this.data.status === jobStatus.FAILED;
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};
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JobBase.prototype.isUnknown = function () {
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return this.data.status === jobStatus.UNKNOWN;
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};
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JobBase.prototype.setQuery = function (query) {
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var now = new Date().toISOString();
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if (!this.isPending()) {
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throw new Error('Job is not pending, it cannot be updated');
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}
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this.data.updated_at = now;
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this.data.query = query;
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};
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JobBase.prototype.setStatus = function (finalStatus, errorMesssage) {
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var now = new Date().toISOString();
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var initialStatus = this.data.status;
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var isValid = this.isValidStatusTransition(initialStatus, finalStatus);
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if (!isValid) {
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throw new Error('Cannot set status from ' + initialStatus + ' to ' + finalStatus);
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}
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this.data.updated_at = now;
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this.data.status = finalStatus;
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if (finalStatus === jobStatus.FAILED && errorMesssage) {
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this.data.failed_reason = errorMesssage;
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}
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};
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JobBase.prototype.validate = function () {
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for (var i = 0; i < mandatoryProperties.length; i++) {
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if (!this.data[mandatoryProperties[i]]) {
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throw new Error('property "' + mandatoryProperties[i] + '" is mandatory');
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}
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}
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};
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JobBase.prototype.serialize = function () {
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var data = JSON.parse(JSON.stringify(this.data));
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delete data.host;
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return data;
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};
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