mirror of
https://github.com/node-red/node-red-nodes.git
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273 lines
11 KiB
JavaScript
273 lines
11 KiB
JavaScript
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module.exports = function(RED) {
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"use strict";
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var mongo = require('mongodb');
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var ObjectID = require('mongodb').ObjectID;
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var MongoClient = mongo.MongoClient;
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function MongoNode(n) {
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RED.nodes.createNode(this,n);
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this.hostname = n.hostname;
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this.port = n.port;
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this.db = n.db;
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this.name = n.name;
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var url = "mongodb://";
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if (this.credentials && this.credentials.user && this.credentials.password) {
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url += this.credentials.user+":"+this.credentials.password+"@";
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}
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url += this.hostname+":"+this.port+"/"+this.db;
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this.url = url;
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}
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RED.nodes.registerType("mongodb",MongoNode,{
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credentials: {
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user: {type:"text"},
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password: {type: "password"}
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}
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});
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function ensureValidSelectorObject(selector) {
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if (selector != null && (typeof selector != 'object' || Buffer.isBuffer(selector))) {
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return {};
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}
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return selector;
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}
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function MongoOutNode(n) {
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RED.nodes.createNode(this,n);
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this.collection = n.collection;
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this.mongodb = n.mongodb;
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this.payonly = n.payonly || false;
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this.upsert = n.upsert || false;
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this.multi = n.multi || false;
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this.operation = n.operation;
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this.mongoConfig = RED.nodes.getNode(this.mongodb);
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this.status({fill:"grey",shape:"ring",text:RED._("mongodbstatus.connecting")});
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var node = this;
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var noerror = true;
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var connectToDB = function() {
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MongoClient.connect(node.mongoConfig.url, function(err, db) {
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if (err) {
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node.status({fill:"red",shape:"ring",text:RED._("mongodb.status.error")});
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if (noerror) { node.error(err); }
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noerror = false;
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node.tout = setTimeout(connectToDB, 10000);
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}
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else {
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node.status({fill:"green",shape:"dot",text:RED._("mongodb.status.connected")});
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node.clientDb = db;
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noerror = true;
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var coll;
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if (node.collection) {
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coll = db.collection(node.collection);
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}
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node.on("input",function(msg) {
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if (!node.collection) {
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if (msg.collection) {
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coll = db.collection(msg.collection);
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}
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else {
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node.error(RED._("mongodb.errors.nocollection"),msg);
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return;
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}
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}
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delete msg._topic;
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delete msg.collection;
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if (node.operation === "store") {
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if (node.payonly) {
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if (typeof msg.payload !== "object") {
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msg.payload = {"payload": msg.payload};
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}
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if (msg.hasOwnProperty("_id") && !msg.payload.hasOwnProperty("_id")) {
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msg.payload._id = msg._id;
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}
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coll.save(msg.payload,function(err, item) {
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if (err) {
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node.error(err,msg);
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}
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});
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}
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else {
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coll.save(msg,function(err, item) {
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if (err) {
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node.error(err,msg);
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}
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});
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}
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}
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else if (node.operation === "insert") {
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if (node.payonly) {
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if (typeof msg.payload !== "object") {
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msg.payload = {"payload": msg.payload};
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}
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if (msg.hasOwnProperty("_id") && !msg.payload.hasOwnProperty("_id")) {
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msg.payload._id = msg._id;
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}
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coll.insert(msg.payload, function(err, item) {
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if (err) {
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node.error(err,msg);
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}
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});
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}
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else {
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coll.insert(msg, function(err,item) {
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if (err) {
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node.error(err,msg);
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}
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});
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}
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}
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else if (node.operation === "update") {
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if (typeof msg.payload !== "object") {
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msg.payload = {"payload": msg.payload};
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}
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var query = msg.query || {};
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var payload = msg.payload || {};
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var options = {
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upsert: node.upsert,
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multi: node.multi
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};
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if (ObjectID.isValid(msg.query._id)) {
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msg.query._id = new ObjectID(msg.query._id);
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}
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coll.update(query, payload, options, function(err, item) {
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if (err) {
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node.error(err,msg);
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}
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});
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}
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else if (node.operation === "delete") {
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coll.remove(msg.payload, function(err, items) {
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if (err) {
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node.error(err,msg);
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}
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});
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}
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});
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}
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});
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}
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if (node.mongoConfig) { connectToDB(); }
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else { node.error(RED._("mongodb.errors.missingconfig")); }
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node.on("close", function() {
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node.status({});
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if (node.tout) { clearTimeout(node.tout); }
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if (node.clientDb) { node.clientDb.close(); }
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});
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}
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RED.nodes.registerType("mongodb out",MongoOutNode);
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function MongoInNode(n) {
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RED.nodes.createNode(this,n);
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this.collection = n.collection;
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this.mongodb = n.mongodb;
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this.operation = n.operation || "find";
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this.mongoConfig = RED.nodes.getNode(this.mongodb);
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this.status({fill:"grey",shape:"ring",text:RED._("mongodb.status.connecting")});
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var node = this;
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var noerror = true;
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var connectToDB = function() {
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MongoClient.connect(node.mongoConfig.url, function(err,db) {
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if (err) {
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node.status({fill:"red",shape:"ring",text:RED._("mongodb.status.error")});
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if (noerror) { node.error(err); }
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noerror = false;
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node.tout = setTimeout(connectToDB, 10000);
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}
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else {
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node.status({fill:"green",shape:"dot",text:RED._("mongodb.status.connected")});
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node.clientDb = db;
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noerror = true;
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var coll;
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node.on("input", function(msg) {
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if (!node.collection) {
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if (msg.collection) {
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coll = db.collection(msg.collection);
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}
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else {
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node.error(RED._("mongodb.errors.nocollection"));
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return;
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}
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}
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else {
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coll = db.collection(node.collection);
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}
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var selector;
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if (node.operation === "find") {
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msg.projection = msg.projection || {};
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selector = ensureValidSelectorObject(msg.payload);
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var limit = msg.limit;
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if (typeof limit === "string" && !isNaN(limit)) {
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limit = Number(limit);
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} else if (typeof limit === "undefined") {
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limit = 0;
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}
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var skip = msg.skip;
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if (typeof skip === "string" && !isNaN(skip)) {
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skip = Number(skip);
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} else if (typeof skip === "undefined") {
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skip = 0;
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}
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coll.find(selector,msg.projection).sort(msg.sort).limit(limit).skip(skip).toArray(function(err, items) {
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if (err) {
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node.error(err);
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}
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else {
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msg.payload = items;
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delete msg.projection;
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delete msg.sort;
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delete msg.limit;
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delete msg.skip;
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node.send(msg);
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}
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});
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}
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else if (node.operation === "count") {
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selector = ensureValidSelectorObject(msg.payload);
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coll.count(selector, function(err, count) {
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if (err) {
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node.error(err);
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}
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else {
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msg.payload = count;
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node.send(msg);
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}
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});
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}
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else if (node.operation === "aggregate") {
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msg.payload = (Array.isArray(msg.payload)) ? msg.payload : [];
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coll.aggregate(msg.payload, function(err, result) {
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if (err) {
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node.error(err);
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}
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else {
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msg.payload = result;
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node.send(msg);
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}
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});
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}
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});
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}
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});
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}
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if (node.mongoConfig) { connectToDB(); }
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else { node.error(RED._("mongodb.errors.missingconfig")); }
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node.on("close", function() {
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node.status({});
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if (node.tout) { clearTimeout(node.tout); }
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if (node.clientDb) { node.clientDb.close(); }
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});
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}
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RED.nodes.registerType("mongodb in",MongoInNode);
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}
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