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/*******************************************************************************
* Copyright (c) 2012 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials are made
* available under the terms of the Eclipse Public License v1.0
* (http://www.eclipse.org/legal/epl-v10.html), and the Eclipse Distribution
* License v1.0 (http://www.eclipse.org/org/documents/edl-v10.html).
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
/*eslint-env node*/
var express = require('express');
var bodyParser = require('body-parser');
var api = require('./api');
var crypto = require('crypto');
var writeError = api.writeError;
var taskList = {};
function orionTasksAPI(options) {
var root = options.root;
if (!root) { throw new Error('options.root path required'); }
return express.Router()
.use(bodyParser.json())
.param('id', function(req, res, next, value) {
req.id = value;
next();
})
.get('/id/:id', function(req, res/*, next*/) {
var id = req.id;
if (!taskList[id]) return writeError(404, res);
res.json(taskList[id].toJSON(true));
})
.delete('/id/:id', deleteOperation)
.get('/temp/:id', function(req, res/*, next*/) {
var id = req.id;
if (!taskList[id]) return writeError(404, res);
res.json(taskList[id].toJSON(false));
})
.delete('/temp/:id', deleteOperation);
}
function Task(res, cancelable, lengthComputable, wait, keep) {
this.timestamp = Date.now();
this.id = crypto.randomBytes(5).toString('hex') + this.timestamp;
this.cancelable = !!cancelable;
this.lengthComputable = !!lengthComputable;
this.keep = !!keep;
this.total = this.loaded = 0;
this.type = "loadstart";
this.res = res;
//TODO temporarily disabled timeout to work around client bug.
if (true || wait === 0) {
this.start();
} else {
this.timeout = setTimeout(function() {
delete this.timeout;
this.start();
}.bind(this), typeof wait === "number" ? wait : 100);
}
}
Task.prototype = {
start: function() {
if (!this.isRunning()) return;
this.started = true;
taskList[this.id] = this;
var resp = JSON.stringify(this.toJSON(true));
var res = this.res;
res.statusCode = 202;
res.setHeader('Content-Type', 'application/json');
res.setHeader('Content-Length', resp.length);
res.end(resp);
},
done: function(result) {
if (this.result) return;
this.result = result;
switch (result.Severity) {
case "Ok":
case "Info":
this.type = "loadend";
break;
case "Error":
case "Warning":
this.type = "error";
break;
default:
this.type = "abort";
}
if (!this.started) {
if (this.timeout) {
clearTimeout(this.timeout);
delete this.timeout;
}
var res = this.res;
if (this.result.JsonData) {
res.statusCode = this.result.HttpCode;
var resp = JSON.stringify(this.result.JsonData);
res.setHeader('Content-Type', 'application/json');
res.setHeader('Content-Length', resp.length);
res.end(resp);
} else if (this.type === "error") {
res.writeHead(this.result.HttpCode, this.result.Message || "");
res.end();
}
}
delete this.res;
},
isRunning: function() {
return this.type !== "error" && this.type !== "abort";
},
updateProgress: function(message, loaded, total) {
if (!this.lengthComputable) return;
this.type = "progress";
if (typeof message === "string") this.message = message;
if (typeof loaded === "number") this.loaded = loaded;
if (typeof total === "number") this.total = total;
},
toJSON: function(isWriteLocation) {
var result = {
lengthComputable: this.lengthComputable,
cancelable: this.cancelable,
timestamp: this.timestamp,
type: this.type
};
if (this.lengthComputable) {
result.loaded = this.loaded;
result.total = this.total;
result.message = this.message;
}
if (this.result) {
result.Result = this.result;
}
if(this.keep && isWriteLocation){
// Do not set location so that tasks is deleted
result.Location = "/task/id/" + this.id;
}else if(isWriteLocation){
result.Location = "/task/temp/" + this.id;
}
return result;
}
};
function deleteOperation(req, res/*, next*/){
var id = req.id;
delete taskList[id];
res.status(200).json({});
}
module.exports = {
router: orionTasksAPI,
Task: Task,
};
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